/*************************************************************************/
/*  rendering_device_vulkan.cpp                                          */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

#include "rendering_device_vulkan.h"
#include "core/hashfuncs.h"
#include "core/os/file_access.h"
#include "core/os/os.h"
#include "core/project_settings.h"
#include "drivers/vulkan/vulkan_context.h"
#include "thirdparty/spirv-reflect/spirv_reflect.h"

//#define FORCE_FULL_BARRIER

void RenderingDeviceVulkan::_add_dependency(RID p_id, RID p_depends_on) {

	if (!dependency_map.has(p_depends_on)) {
		dependency_map[p_depends_on] = Set<RID>();
	}

	dependency_map[p_depends_on].insert(p_id);

	if (!reverse_dependency_map.has(p_id)) {
		reverse_dependency_map[p_id] = Set<RID>();
	}

	reverse_dependency_map[p_id].insert(p_depends_on);
}

void RenderingDeviceVulkan::_free_dependencies(RID p_id) {

	//direct dependencies must be freed

	Map<RID, Set<RID>>::Element *E = dependency_map.find(p_id);
	if (E) {

		while (E->get().size()) {
			free(E->get().front()->get());
		}
		dependency_map.erase(E);
	}

	//reverse depenencies must be unreferenced
	E = reverse_dependency_map.find(p_id);

	if (E) {

		for (Set<RID>::Element *F = E->get().front(); F; F = F->next()) {
			Map<RID, Set<RID>>::Element *G = dependency_map.find(F->get());
			ERR_CONTINUE(!G);
			ERR_CONTINUE(!G->get().has(p_id));
			G->get().erase(p_id);
		}

		reverse_dependency_map.erase(E);
	}
}

const VkFormat RenderingDeviceVulkan::vulkan_formats[RenderingDevice::DATA_FORMAT_MAX] = {
	VK_FORMAT_R4G4_UNORM_PACK8,
	VK_FORMAT_R4G4B4A4_UNORM_PACK16,
	VK_FORMAT_B4G4R4A4_UNORM_PACK16,
	VK_FORMAT_R5G6B5_UNORM_PACK16,
	VK_FORMAT_B5G6R5_UNORM_PACK16,
	VK_FORMAT_R5G5B5A1_UNORM_PACK16,
	VK_FORMAT_B5G5R5A1_UNORM_PACK16,
	VK_FORMAT_A1R5G5B5_UNORM_PACK16,
	VK_FORMAT_R8_UNORM,
	VK_FORMAT_R8_SNORM,
	VK_FORMAT_R8_USCALED,
	VK_FORMAT_R8_SSCALED,
	VK_FORMAT_R8_UINT,
	VK_FORMAT_R8_SINT,
	VK_FORMAT_R8_SRGB,
	VK_FORMAT_R8G8_UNORM,
	VK_FORMAT_R8G8_SNORM,
	VK_FORMAT_R8G8_USCALED,
	VK_FORMAT_R8G8_SSCALED,
	VK_FORMAT_R8G8_UINT,
	VK_FORMAT_R8G8_SINT,
	VK_FORMAT_R8G8_SRGB,
	VK_FORMAT_R8G8B8_UNORM,
	VK_FORMAT_R8G8B8_SNORM,
	VK_FORMAT_R8G8B8_USCALED,
	VK_FORMAT_R8G8B8_SSCALED,
	VK_FORMAT_R8G8B8_UINT,
	VK_FORMAT_R8G8B8_SINT,
	VK_FORMAT_R8G8B8_SRGB,
	VK_FORMAT_B8G8R8_UNORM,
	VK_FORMAT_B8G8R8_SNORM,
	VK_FORMAT_B8G8R8_USCALED,
	VK_FORMAT_B8G8R8_SSCALED,
	VK_FORMAT_B8G8R8_UINT,
	VK_FORMAT_B8G8R8_SINT,
	VK_FORMAT_B8G8R8_SRGB,
	VK_FORMAT_R8G8B8A8_UNORM,
	VK_FORMAT_R8G8B8A8_SNORM,
	VK_FORMAT_R8G8B8A8_USCALED,
	VK_FORMAT_R8G8B8A8_SSCALED,
	VK_FORMAT_R8G8B8A8_UINT,
	VK_FORMAT_R8G8B8A8_SINT,
	VK_FORMAT_R8G8B8A8_SRGB,
	VK_FORMAT_B8G8R8A8_UNORM,
	VK_FORMAT_B8G8R8A8_SNORM,
	VK_FORMAT_B8G8R8A8_USCALED,
	VK_FORMAT_B8G8R8A8_SSCALED,
	VK_FORMAT_B8G8R8A8_UINT,
	VK_FORMAT_B8G8R8A8_SINT,
	VK_FORMAT_B8G8R8A8_SRGB,
	VK_FORMAT_A8B8G8R8_UNORM_PACK32,
	VK_FORMAT_A8B8G8R8_SNORM_PACK32,
	VK_FORMAT_A8B8G8R8_USCALED_PACK32,
	VK_FORMAT_A8B8G8R8_SSCALED_PACK32,
	VK_FORMAT_A8B8G8R8_UINT_PACK32,
	VK_FORMAT_A8B8G8R8_SINT_PACK32,
	VK_FORMAT_A8B8G8R8_SRGB_PACK32,
	VK_FORMAT_A2R10G10B10_UNORM_PACK32,
	VK_FORMAT_A2R10G10B10_SNORM_PACK32,
	VK_FORMAT_A2R10G10B10_USCALED_PACK32,
	VK_FORMAT_A2R10G10B10_SSCALED_PACK32,
	VK_FORMAT_A2R10G10B10_UINT_PACK32,
	VK_FORMAT_A2R10G10B10_SINT_PACK32,
	VK_FORMAT_A2B10G10R10_UNORM_PACK32,
	VK_FORMAT_A2B10G10R10_SNORM_PACK32,
	VK_FORMAT_A2B10G10R10_USCALED_PACK32,
	VK_FORMAT_A2B10G10R10_SSCALED_PACK32,
	VK_FORMAT_A2B10G10R10_UINT_PACK32,
	VK_FORMAT_A2B10G10R10_SINT_PACK32,
	VK_FORMAT_R16_UNORM,
	VK_FORMAT_R16_SNORM,
	VK_FORMAT_R16_USCALED,
	VK_FORMAT_R16_SSCALED,
	VK_FORMAT_R16_UINT,
	VK_FORMAT_R16_SINT,
	VK_FORMAT_R16_SFLOAT,
	VK_FORMAT_R16G16_UNORM,
	VK_FORMAT_R16G16_SNORM,
	VK_FORMAT_R16G16_USCALED,
	VK_FORMAT_R16G16_SSCALED,
	VK_FORMAT_R16G16_UINT,
	VK_FORMAT_R16G16_SINT,
	VK_FORMAT_R16G16_SFLOAT,
	VK_FORMAT_R16G16B16_UNORM,
	VK_FORMAT_R16G16B16_SNORM,
	VK_FORMAT_R16G16B16_USCALED,
	VK_FORMAT_R16G16B16_SSCALED,
	VK_FORMAT_R16G16B16_UINT,
	VK_FORMAT_R16G16B16_SINT,
	VK_FORMAT_R16G16B16_SFLOAT,
	VK_FORMAT_R16G16B16A16_UNORM,
	VK_FORMAT_R16G16B16A16_SNORM,
	VK_FORMAT_R16G16B16A16_USCALED,
	VK_FORMAT_R16G16B16A16_SSCALED,
	VK_FORMAT_R16G16B16A16_UINT,
	VK_FORMAT_R16G16B16A16_SINT,
	VK_FORMAT_R16G16B16A16_SFLOAT,
	VK_FORMAT_R32_UINT,
	VK_FORMAT_R32_SINT,
	VK_FORMAT_R32_SFLOAT,
	VK_FORMAT_R32G32_UINT,
	VK_FORMAT_R32G32_SINT,
	VK_FORMAT_R32G32_SFLOAT,
	VK_FORMAT_R32G32B32_UINT,
	VK_FORMAT_R32G32B32_SINT,
	VK_FORMAT_R32G32B32_SFLOAT,
	VK_FORMAT_R32G32B32A32_UINT,
	VK_FORMAT_R32G32B32A32_SINT,
	VK_FORMAT_R32G32B32A32_SFLOAT,
	VK_FORMAT_R64_UINT,
	VK_FORMAT_R64_SINT,
	VK_FORMAT_R64_SFLOAT,
	VK_FORMAT_R64G64_UINT,
	VK_FORMAT_R64G64_SINT,
	VK_FORMAT_R64G64_SFLOAT,
	VK_FORMAT_R64G64B64_UINT,
	VK_FORMAT_R64G64B64_SINT,
	VK_FORMAT_R64G64B64_SFLOAT,
	VK_FORMAT_R64G64B64A64_UINT,
	VK_FORMAT_R64G64B64A64_SINT,
	VK_FORMAT_R64G64B64A64_SFLOAT,
	VK_FORMAT_B10G11R11_UFLOAT_PACK32,
	VK_FORMAT_E5B9G9R9_UFLOAT_PACK32,
	VK_FORMAT_D16_UNORM,
	VK_FORMAT_X8_D24_UNORM_PACK32,
	VK_FORMAT_D32_SFLOAT,
	VK_FORMAT_S8_UINT,
	VK_FORMAT_D16_UNORM_S8_UINT,
	VK_FORMAT_D24_UNORM_S8_UINT,
	VK_FORMAT_D32_SFLOAT_S8_UINT,
	VK_FORMAT_BC1_RGB_UNORM_BLOCK,
	VK_FORMAT_BC1_RGB_SRGB_BLOCK,
	VK_FORMAT_BC1_RGBA_UNORM_BLOCK,
	VK_FORMAT_BC1_RGBA_SRGB_BLOCK,
	VK_FORMAT_BC2_UNORM_BLOCK,
	VK_FORMAT_BC2_SRGB_BLOCK,
	VK_FORMAT_BC3_UNORM_BLOCK,
	VK_FORMAT_BC3_SRGB_BLOCK,
	VK_FORMAT_BC4_UNORM_BLOCK,
	VK_FORMAT_BC4_SNORM_BLOCK,
	VK_FORMAT_BC5_UNORM_BLOCK,
	VK_FORMAT_BC5_SNORM_BLOCK,
	VK_FORMAT_BC6H_UFLOAT_BLOCK,
	VK_FORMAT_BC6H_SFLOAT_BLOCK,
	VK_FORMAT_BC7_UNORM_BLOCK,
	VK_FORMAT_BC7_SRGB_BLOCK,
	VK_FORMAT_ETC2_R8G8B8_UNORM_BLOCK,
	VK_FORMAT_ETC2_R8G8B8_SRGB_BLOCK,
	VK_FORMAT_ETC2_R8G8B8A1_UNORM_BLOCK,
	VK_FORMAT_ETC2_R8G8B8A1_SRGB_BLOCK,
	VK_FORMAT_ETC2_R8G8B8A8_UNORM_BLOCK,
	VK_FORMAT_ETC2_R8G8B8A8_SRGB_BLOCK,
	VK_FORMAT_EAC_R11_UNORM_BLOCK,
	VK_FORMAT_EAC_R11_SNORM_BLOCK,
	VK_FORMAT_EAC_R11G11_UNORM_BLOCK,
	VK_FORMAT_EAC_R11G11_SNORM_BLOCK,
	VK_FORMAT_ASTC_4x4_UNORM_BLOCK,
	VK_FORMAT_ASTC_4x4_SRGB_BLOCK,
	VK_FORMAT_ASTC_5x4_UNORM_BLOCK,
	VK_FORMAT_ASTC_5x4_SRGB_BLOCK,
	VK_FORMAT_ASTC_5x5_UNORM_BLOCK,
	VK_FORMAT_ASTC_5x5_SRGB_BLOCK,
	VK_FORMAT_ASTC_6x5_UNORM_BLOCK,
	VK_FORMAT_ASTC_6x5_SRGB_BLOCK,
	VK_FORMAT_ASTC_6x6_UNORM_BLOCK,
	VK_FORMAT_ASTC_6x6_SRGB_BLOCK,
	VK_FORMAT_ASTC_8x5_UNORM_BLOCK,
	VK_FORMAT_ASTC_8x5_SRGB_BLOCK,
	VK_FORMAT_ASTC_8x6_UNORM_BLOCK,
	VK_FORMAT_ASTC_8x6_SRGB_BLOCK,
	VK_FORMAT_ASTC_8x8_UNORM_BLOCK,
	VK_FORMAT_ASTC_8x8_SRGB_BLOCK,
	VK_FORMAT_ASTC_10x5_UNORM_BLOCK,
	VK_FORMAT_ASTC_10x5_SRGB_BLOCK,
	VK_FORMAT_ASTC_10x6_UNORM_BLOCK,
	VK_FORMAT_ASTC_10x6_SRGB_BLOCK,
	VK_FORMAT_ASTC_10x8_UNORM_BLOCK,
	VK_FORMAT_ASTC_10x8_SRGB_BLOCK,
	VK_FORMAT_ASTC_10x10_UNORM_BLOCK,
	VK_FORMAT_ASTC_10x10_SRGB_BLOCK,
	VK_FORMAT_ASTC_12x10_UNORM_BLOCK,
	VK_FORMAT_ASTC_12x10_SRGB_BLOCK,
	VK_FORMAT_ASTC_12x12_UNORM_BLOCK,
	VK_FORMAT_ASTC_12x12_SRGB_BLOCK,
	VK_FORMAT_G8B8G8R8_422_UNORM,
	VK_FORMAT_B8G8R8G8_422_UNORM,
	VK_FORMAT_G8_B8_R8_3PLANE_420_UNORM,
	VK_FORMAT_G8_B8R8_2PLANE_420_UNORM,
	VK_FORMAT_G8_B8_R8_3PLANE_422_UNORM,
	VK_FORMAT_G8_B8R8_2PLANE_422_UNORM,
	VK_FORMAT_G8_B8_R8_3PLANE_444_UNORM,
	VK_FORMAT_R10X6_UNORM_PACK16,
	VK_FORMAT_R10X6G10X6_UNORM_2PACK16,
	VK_FORMAT_R10X6G10X6B10X6A10X6_UNORM_4PACK16,
	VK_FORMAT_G10X6B10X6G10X6R10X6_422_UNORM_4PACK16,
	VK_FORMAT_B10X6G10X6R10X6G10X6_422_UNORM_4PACK16,
	VK_FORMAT_G10X6_B10X6_R10X6_3PLANE_420_UNORM_3PACK16,
	VK_FORMAT_G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16,
	VK_FORMAT_G10X6_B10X6_R10X6_3PLANE_422_UNORM_3PACK16,
	VK_FORMAT_G10X6_B10X6R10X6_2PLANE_422_UNORM_3PACK16,
	VK_FORMAT_G10X6_B10X6_R10X6_3PLANE_444_UNORM_3PACK16,
	VK_FORMAT_R12X4_UNORM_PACK16,
	VK_FORMAT_R12X4G12X4_UNORM_2PACK16,
	VK_FORMAT_R12X4G12X4B12X4A12X4_UNORM_4PACK16,
	VK_FORMAT_G12X4B12X4G12X4R12X4_422_UNORM_4PACK16,
	VK_FORMAT_B12X4G12X4R12X4G12X4_422_UNORM_4PACK16,
	VK_FORMAT_G12X4_B12X4_R12X4_3PLANE_420_UNORM_3PACK16,
	VK_FORMAT_G12X4_B12X4R12X4_2PLANE_420_UNORM_3PACK16,
	VK_FORMAT_G12X4_B12X4_R12X4_3PLANE_422_UNORM_3PACK16,
	VK_FORMAT_G12X4_B12X4R12X4_2PLANE_422_UNORM_3PACK16,
	VK_FORMAT_G12X4_B12X4_R12X4_3PLANE_444_UNORM_3PACK16,
	VK_FORMAT_G16B16G16R16_422_UNORM,
	VK_FORMAT_B16G16R16G16_422_UNORM,
	VK_FORMAT_G16_B16_R16_3PLANE_420_UNORM,
	VK_FORMAT_G16_B16R16_2PLANE_420_UNORM,
	VK_FORMAT_G16_B16_R16_3PLANE_422_UNORM,
	VK_FORMAT_G16_B16R16_2PLANE_422_UNORM,
	VK_FORMAT_G16_B16_R16_3PLANE_444_UNORM,
	VK_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG,
	VK_FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG,
	VK_FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG,
	VK_FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG,
	VK_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG,
	VK_FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG,
	VK_FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG,
	VK_FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG,
};

const char *RenderingDeviceVulkan::named_formats[RenderingDevice::DATA_FORMAT_MAX] = {
	"R4G4_Unorm_Pack8",
	"R4G4B4A4_Unorm_Pack16",
	"B4G4R4A4_Unorm_Pack16",
	"R5G6B5_Unorm_Pack16",
	"B5G6R5_Unorm_Pack16",
	"R5G5B5A1_Unorm_Pack16",
	"B5G5R5A1_Unorm_Pack16",
	"A1R5G5B5_Unorm_Pack16",
	"R8_Unorm",
	"R8_Snorm",
	"R8_Uscaled",
	"R8_Sscaled",
	"R8_Uint",
	"R8_Sint",
	"R8_Srgb",
	"R8G8_Unorm",
	"R8G8_Snorm",
	"R8G8_Uscaled",
	"R8G8_Sscaled",
	"R8G8_Uint",
	"R8G8_Sint",
	"R8G8_Srgb",
	"R8G8B8_Unorm",
	"R8G8B8_Snorm",
	"R8G8B8_Uscaled",
	"R8G8B8_Sscaled",
	"R8G8B8_Uint",
	"R8G8B8_Sint",
	"R8G8B8_Srgb",
	"B8G8R8_Unorm",
	"B8G8R8_Snorm",
	"B8G8R8_Uscaled",
	"B8G8R8_Sscaled",
	"B8G8R8_Uint",
	"B8G8R8_Sint",
	"B8G8R8_Srgb",
	"R8G8B8A8_Unorm",
	"R8G8B8A8_Snorm",
	"R8G8B8A8_Uscaled",
	"R8G8B8A8_Sscaled",
	"R8G8B8A8_Uint",
	"R8G8B8A8_Sint",
	"R8G8B8A8_Srgb",
	"B8G8R8A8_Unorm",
	"B8G8R8A8_Snorm",
	"B8G8R8A8_Uscaled",
	"B8G8R8A8_Sscaled",
	"B8G8R8A8_Uint",
	"B8G8R8A8_Sint",
	"B8G8R8A8_Srgb",
	"A8B8G8R8_Unorm_Pack32",
	"A8B8G8R8_Snorm_Pack32",
	"A8B8G8R8_Uscaled_Pack32",
	"A8B8G8R8_Sscaled_Pack32",
	"A8B8G8R8_Uint_Pack32",
	"A8B8G8R8_Sint_Pack32",
	"A8B8G8R8_Srgb_Pack32",
	"A2R10G10B10_Unorm_Pack32",
	"A2R10G10B10_Snorm_Pack32",
	"A2R10G10B10_Uscaled_Pack32",
	"A2R10G10B10_Sscaled_Pack32",
	"A2R10G10B10_Uint_Pack32",
	"A2R10G10B10_Sint_Pack32",
	"A2B10G10R10_Unorm_Pack32",
	"A2B10G10R10_Snorm_Pack32",
	"A2B10G10R10_Uscaled_Pack32",
	"A2B10G10R10_Sscaled_Pack32",
	"A2B10G10R10_Uint_Pack32",
	"A2B10G10R10_Sint_Pack32",
	"R16_Unorm",
	"R16_Snorm",
	"R16_Uscaled",
	"R16_Sscaled",
	"R16_Uint",
	"R16_Sint",
	"R16_Sfloat",
	"R16G16_Unorm",
	"R16G16_Snorm",
	"R16G16_Uscaled",
	"R16G16_Sscaled",
	"R16G16_Uint",
	"R16G16_Sint",
	"R16G16_Sfloat",
	"R16G16B16_Unorm",
	"R16G16B16_Snorm",
	"R16G16B16_Uscaled",
	"R16G16B16_Sscaled",
	"R16G16B16_Uint",
	"R16G16B16_Sint",
	"R16G16B16_Sfloat",
	"R16G16B16A16_Unorm",
	"R16G16B16A16_Snorm",
	"R16G16B16A16_Uscaled",
	"R16G16B16A16_Sscaled",
	"R16G16B16A16_Uint",
	"R16G16B16A16_Sint",
	"R16G16B16A16_Sfloat",
	"R32_Uint",
	"R32_Sint",
	"R32_Sfloat",
	"R32G32_Uint",
	"R32G32_Sint",
	"R32G32_Sfloat",
	"R32G32B32_Uint",
	"R32G32B32_Sint",
	"R32G32B32_Sfloat",
	"R32G32B32A32_Uint",
	"R32G32B32A32_Sint",
	"R32G32B32A32_Sfloat",
	"R64_Uint",
	"R64_Sint",
	"R64_Sfloat",
	"R64G64_Uint",
	"R64G64_Sint",
	"R64G64_Sfloat",
	"R64G64B64_Uint",
	"R64G64B64_Sint",
	"R64G64B64_Sfloat",
	"R64G64B64A64_Uint",
	"R64G64B64A64_Sint",
	"R64G64B64A64_Sfloat",
	"B10G11R11_Ufloat_Pack32",
	"E5B9G9R9_Ufloat_Pack32",
	"D16_Unorm",
	"X8_D24_Unorm_Pack32",
	"D32_Sfloat",
	"S8_Uint",
	"D16_Unorm_S8_Uint",
	"D24_Unorm_S8_Uint",
	"D32_Sfloat_S8_Uint",
	"Bc1_Rgb_Unorm_Block",
	"Bc1_Rgb_Srgb_Block",
	"Bc1_Rgba_Unorm_Block",
	"Bc1_Rgba_Srgb_Block",
	"Bc2_Unorm_Block",
	"Bc2_Srgb_Block",
	"Bc3_Unorm_Block",
	"Bc3_Srgb_Block",
	"Bc4_Unorm_Block",
	"Bc4_Snorm_Block",
	"Bc5_Unorm_Block",
	"Bc5_Snorm_Block",
	"Bc6H_Ufloat_Block",
	"Bc6H_Sfloat_Block",
	"Bc7_Unorm_Block",
	"Bc7_Srgb_Block",
	"Etc2_R8G8B8_Unorm_Block",
	"Etc2_R8G8B8_Srgb_Block",
	"Etc2_R8G8B8A1_Unorm_Block",
	"Etc2_R8G8B8A1_Srgb_Block",
	"Etc2_R8G8B8A8_Unorm_Block",
	"Etc2_R8G8B8A8_Srgb_Block",
	"Eac_R11_Unorm_Block",
	"Eac_R11_Snorm_Block",
	"Eac_R11G11_Unorm_Block",
	"Eac_R11G11_Snorm_Block",
	"Astc_4X4_Unorm_Block",
	"Astc_4X4_Srgb_Block",
	"Astc_5X4_Unorm_Block",
	"Astc_5X4_Srgb_Block",
	"Astc_5X5_Unorm_Block",
	"Astc_5X5_Srgb_Block",
	"Astc_6X5_Unorm_Block",
	"Astc_6X5_Srgb_Block",
	"Astc_6X6_Unorm_Block",
	"Astc_6X6_Srgb_Block",
	"Astc_8X5_Unorm_Block",
	"Astc_8X5_Srgb_Block",
	"Astc_8X6_Unorm_Block",
	"Astc_8X6_Srgb_Block",
	"Astc_8X8_Unorm_Block",
	"Astc_8X8_Srgb_Block",
	"Astc_10X5_Unorm_Block",
	"Astc_10X5_Srgb_Block",
	"Astc_10X6_Unorm_Block",
	"Astc_10X6_Srgb_Block",
	"Astc_10X8_Unorm_Block",
	"Astc_10X8_Srgb_Block",
	"Astc_10X10_Unorm_Block",
	"Astc_10X10_Srgb_Block",
	"Astc_12X10_Unorm_Block",
	"Astc_12X10_Srgb_Block",
	"Astc_12X12_Unorm_Block",
	"Astc_12X12_Srgb_Block",
	"G8B8G8R8_422_Unorm",
	"B8G8R8G8_422_Unorm",
	"G8_B8_R8_3Plane_420_Unorm",
	"G8_B8R8_2Plane_420_Unorm",
	"G8_B8_R8_3Plane_422_Unorm",
	"G8_B8R8_2Plane_422_Unorm",
	"G8_B8_R8_3Plane_444_Unorm",
	"R10X6_Unorm_Pack16",
	"R10X6G10X6_Unorm_2Pack16",
	"R10X6G10X6B10X6A10X6_Unorm_4Pack16",
	"G10X6B10X6G10X6R10X6_422_Unorm_4Pack16",
	"B10X6G10X6R10X6G10X6_422_Unorm_4Pack16",
	"G10X6_B10X6_R10X6_3Plane_420_Unorm_3Pack16",
	"G10X6_B10X6R10X6_2Plane_420_Unorm_3Pack16",
	"G10X6_B10X6_R10X6_3Plane_422_Unorm_3Pack16",
	"G10X6_B10X6R10X6_2Plane_422_Unorm_3Pack16",
	"G10X6_B10X6_R10X6_3Plane_444_Unorm_3Pack16",
	"R12X4_Unorm_Pack16",
	"R12X4G12X4_Unorm_2Pack16",
	"R12X4G12X4B12X4A12X4_Unorm_4Pack16",
	"G12X4B12X4G12X4R12X4_422_Unorm_4Pack16",
	"B12X4G12X4R12X4G12X4_422_Unorm_4Pack16",
	"G12X4_B12X4_R12X4_3Plane_420_Unorm_3Pack16",
	"G12X4_B12X4R12X4_2Plane_420_Unorm_3Pack16",
	"G12X4_B12X4_R12X4_3Plane_422_Unorm_3Pack16",
	"G12X4_B12X4R12X4_2Plane_422_Unorm_3Pack16",
	"G12X4_B12X4_R12X4_3Plane_444_Unorm_3Pack16",
	"G16B16G16R16_422_Unorm",
	"B16G16R16G16_422_Unorm",
	"G16_B16_R16_3Plane_420_Unorm",
	"G16_B16R16_2Plane_420_Unorm",
	"G16_B16_R16_3Plane_422_Unorm",
	"G16_B16R16_2Plane_422_Unorm",
	"G16_B16_R16_3Plane_444_Unorm",
	"Pvrtc1_2Bpp_Unorm_Block_Img",
	"Pvrtc1_4Bpp_Unorm_Block_Img",
	"Pvrtc2_2Bpp_Unorm_Block_Img",
	"Pvrtc2_4Bpp_Unorm_Block_Img",
	"Pvrtc1_2Bpp_Srgb_Block_Img",
	"Pvrtc1_4Bpp_Srgb_Block_Img",
	"Pvrtc2_2Bpp_Srgb_Block_Img",
	"Pvrtc2_4Bpp_Srgb_Block_Img"
};

int RenderingDeviceVulkan::get_format_vertex_size(DataFormat p_format) {
	switch (p_format) {
		case DATA_FORMAT_R8_UNORM:
		case DATA_FORMAT_R8_SNORM:
		case DATA_FORMAT_R8_UINT:
		case DATA_FORMAT_R8_SINT:
		case DATA_FORMAT_R8G8_UNORM:
		case DATA_FORMAT_R8G8_SNORM:
		case DATA_FORMAT_R8G8_UINT:
		case DATA_FORMAT_R8G8_SINT:
		case DATA_FORMAT_R8G8B8_UNORM:
		case DATA_FORMAT_R8G8B8_SNORM:
		case DATA_FORMAT_R8G8B8_UINT:
		case DATA_FORMAT_R8G8B8_SINT:
		case DATA_FORMAT_B8G8R8_UNORM:
		case DATA_FORMAT_B8G8R8_SNORM:
		case DATA_FORMAT_B8G8R8_UINT:
		case DATA_FORMAT_B8G8R8_SINT:
		case DATA_FORMAT_R8G8B8A8_UNORM:
		case DATA_FORMAT_R8G8B8A8_SNORM:
		case DATA_FORMAT_R8G8B8A8_UINT:
		case DATA_FORMAT_R8G8B8A8_SINT:
		case DATA_FORMAT_B8G8R8A8_UNORM:
		case DATA_FORMAT_B8G8R8A8_SNORM:
		case DATA_FORMAT_B8G8R8A8_UINT:
		case DATA_FORMAT_B8G8R8A8_SINT: return 4;
		case DATA_FORMAT_R16_UNORM:
		case DATA_FORMAT_R16_SNORM:
		case DATA_FORMAT_R16_UINT:
		case DATA_FORMAT_R16_SINT:
		case DATA_FORMAT_R16_SFLOAT: return 4;
		case DATA_FORMAT_R16G16_UNORM:
		case DATA_FORMAT_R16G16_SNORM:
		case DATA_FORMAT_R16G16_UINT:
		case DATA_FORMAT_R16G16_SINT:
		case DATA_FORMAT_R16G16_SFLOAT: return 4;
		case DATA_FORMAT_R16G16B16_UNORM:
		case DATA_FORMAT_R16G16B16_SNORM:
		case DATA_FORMAT_R16G16B16_UINT:
		case DATA_FORMAT_R16G16B16_SINT:
		case DATA_FORMAT_R16G16B16_SFLOAT: return 8;
		case DATA_FORMAT_R16G16B16A16_UNORM:
		case DATA_FORMAT_R16G16B16A16_SNORM:
		case DATA_FORMAT_R16G16B16A16_UINT:
		case DATA_FORMAT_R16G16B16A16_SINT:
		case DATA_FORMAT_R16G16B16A16_SFLOAT: return 8;
		case DATA_FORMAT_R32_UINT:
		case DATA_FORMAT_R32_SINT:
		case DATA_FORMAT_R32_SFLOAT: return 4;
		case DATA_FORMAT_R32G32_UINT:
		case DATA_FORMAT_R32G32_SINT:
		case DATA_FORMAT_R32G32_SFLOAT: return 8;
		case DATA_FORMAT_R32G32B32_UINT:
		case DATA_FORMAT_R32G32B32_SINT:
		case DATA_FORMAT_R32G32B32_SFLOAT: return 12;
		case DATA_FORMAT_R32G32B32A32_UINT:
		case DATA_FORMAT_R32G32B32A32_SINT:
		case DATA_FORMAT_R32G32B32A32_SFLOAT: return 16;
		case DATA_FORMAT_R64_UINT:
		case DATA_FORMAT_R64_SINT:
		case DATA_FORMAT_R64_SFLOAT: return 8;
		case DATA_FORMAT_R64G64_UINT:
		case DATA_FORMAT_R64G64_SINT:
		case DATA_FORMAT_R64G64_SFLOAT: return 16;
		case DATA_FORMAT_R64G64B64_UINT:
		case DATA_FORMAT_R64G64B64_SINT:
		case DATA_FORMAT_R64G64B64_SFLOAT: return 24;
		case DATA_FORMAT_R64G64B64A64_UINT:
		case DATA_FORMAT_R64G64B64A64_SINT:
		case DATA_FORMAT_R64G64B64A64_SFLOAT: return 32;
		default: return 0;
	}
}

uint32_t RenderingDeviceVulkan::get_image_format_pixel_size(DataFormat p_format) {

	switch (p_format) {

		case DATA_FORMAT_R4G4_UNORM_PACK8: return 1;
		case DATA_FORMAT_R4G4B4A4_UNORM_PACK16:
		case DATA_FORMAT_B4G4R4A4_UNORM_PACK16:
		case DATA_FORMAT_R5G6B5_UNORM_PACK16:
		case DATA_FORMAT_B5G6R5_UNORM_PACK16:
		case DATA_FORMAT_R5G5B5A1_UNORM_PACK16:
		case DATA_FORMAT_B5G5R5A1_UNORM_PACK16:
		case DATA_FORMAT_A1R5G5B5_UNORM_PACK16: return 2;
		case DATA_FORMAT_R8_UNORM:
		case DATA_FORMAT_R8_SNORM:
		case DATA_FORMAT_R8_USCALED:
		case DATA_FORMAT_R8_SSCALED:
		case DATA_FORMAT_R8_UINT:
		case DATA_FORMAT_R8_SINT:
		case DATA_FORMAT_R8_SRGB: return 1;
		case DATA_FORMAT_R8G8_UNORM:
		case DATA_FORMAT_R8G8_SNORM:
		case DATA_FORMAT_R8G8_USCALED:
		case DATA_FORMAT_R8G8_SSCALED:
		case DATA_FORMAT_R8G8_UINT:
		case DATA_FORMAT_R8G8_SINT:
		case DATA_FORMAT_R8G8_SRGB: return 2;
		case DATA_FORMAT_R8G8B8_UNORM:
		case DATA_FORMAT_R8G8B8_SNORM:
		case DATA_FORMAT_R8G8B8_USCALED:
		case DATA_FORMAT_R8G8B8_SSCALED:
		case DATA_FORMAT_R8G8B8_UINT:
		case DATA_FORMAT_R8G8B8_SINT:
		case DATA_FORMAT_R8G8B8_SRGB:
		case DATA_FORMAT_B8G8R8_UNORM:
		case DATA_FORMAT_B8G8R8_SNORM:
		case DATA_FORMAT_B8G8R8_USCALED:
		case DATA_FORMAT_B8G8R8_SSCALED:
		case DATA_FORMAT_B8G8R8_UINT:
		case DATA_FORMAT_B8G8R8_SINT:
		case DATA_FORMAT_B8G8R8_SRGB: return 3;
		case DATA_FORMAT_R8G8B8A8_UNORM:
		case DATA_FORMAT_R8G8B8A8_SNORM:
		case DATA_FORMAT_R8G8B8A8_USCALED:
		case DATA_FORMAT_R8G8B8A8_SSCALED:
		case DATA_FORMAT_R8G8B8A8_UINT:
		case DATA_FORMAT_R8G8B8A8_SINT:
		case DATA_FORMAT_R8G8B8A8_SRGB:
		case DATA_FORMAT_B8G8R8A8_UNORM:
		case DATA_FORMAT_B8G8R8A8_SNORM:
		case DATA_FORMAT_B8G8R8A8_USCALED:
		case DATA_FORMAT_B8G8R8A8_SSCALED:
		case DATA_FORMAT_B8G8R8A8_UINT:
		case DATA_FORMAT_B8G8R8A8_SINT:
		case DATA_FORMAT_B8G8R8A8_SRGB: return 4;
		case DATA_FORMAT_A8B8G8R8_UNORM_PACK32:
		case DATA_FORMAT_A8B8G8R8_SNORM_PACK32:
		case DATA_FORMAT_A8B8G8R8_USCALED_PACK32:
		case DATA_FORMAT_A8B8G8R8_SSCALED_PACK32:
		case DATA_FORMAT_A8B8G8R8_UINT_PACK32:
		case DATA_FORMAT_A8B8G8R8_SINT_PACK32:
		case DATA_FORMAT_A8B8G8R8_SRGB_PACK32:
		case DATA_FORMAT_A2R10G10B10_UNORM_PACK32:
		case DATA_FORMAT_A2R10G10B10_SNORM_PACK32:
		case DATA_FORMAT_A2R10G10B10_USCALED_PACK32:
		case DATA_FORMAT_A2R10G10B10_SSCALED_PACK32:
		case DATA_FORMAT_A2R10G10B10_UINT_PACK32:
		case DATA_FORMAT_A2R10G10B10_SINT_PACK32:
		case DATA_FORMAT_A2B10G10R10_UNORM_PACK32:
		case DATA_FORMAT_A2B10G10R10_SNORM_PACK32:
		case DATA_FORMAT_A2B10G10R10_USCALED_PACK32:
		case DATA_FORMAT_A2B10G10R10_SSCALED_PACK32:
		case DATA_FORMAT_A2B10G10R10_UINT_PACK32:
		case DATA_FORMAT_A2B10G10R10_SINT_PACK32: return 4;
		case DATA_FORMAT_R16_UNORM:
		case DATA_FORMAT_R16_SNORM:
		case DATA_FORMAT_R16_USCALED:
		case DATA_FORMAT_R16_SSCALED:
		case DATA_FORMAT_R16_UINT:
		case DATA_FORMAT_R16_SINT:
		case DATA_FORMAT_R16_SFLOAT: return 2;
		case DATA_FORMAT_R16G16_UNORM:
		case DATA_FORMAT_R16G16_SNORM:
		case DATA_FORMAT_R16G16_USCALED:
		case DATA_FORMAT_R16G16_SSCALED:
		case DATA_FORMAT_R16G16_UINT:
		case DATA_FORMAT_R16G16_SINT:
		case DATA_FORMAT_R16G16_SFLOAT: return 4;
		case DATA_FORMAT_R16G16B16_UNORM:
		case DATA_FORMAT_R16G16B16_SNORM:
		case DATA_FORMAT_R16G16B16_USCALED:
		case DATA_FORMAT_R16G16B16_SSCALED:
		case DATA_FORMAT_R16G16B16_UINT:
		case DATA_FORMAT_R16G16B16_SINT:
		case DATA_FORMAT_R16G16B16_SFLOAT: return 6;
		case DATA_FORMAT_R16G16B16A16_UNORM:
		case DATA_FORMAT_R16G16B16A16_SNORM:
		case DATA_FORMAT_R16G16B16A16_USCALED:
		case DATA_FORMAT_R16G16B16A16_SSCALED:
		case DATA_FORMAT_R16G16B16A16_UINT:
		case DATA_FORMAT_R16G16B16A16_SINT:
		case DATA_FORMAT_R16G16B16A16_SFLOAT: return 8;
		case DATA_FORMAT_R32_UINT:
		case DATA_FORMAT_R32_SINT:
		case DATA_FORMAT_R32_SFLOAT: return 4;
		case DATA_FORMAT_R32G32_UINT:
		case DATA_FORMAT_R32G32_SINT:
		case DATA_FORMAT_R32G32_SFLOAT: return 8;
		case DATA_FORMAT_R32G32B32_UINT:
		case DATA_FORMAT_R32G32B32_SINT:
		case DATA_FORMAT_R32G32B32_SFLOAT: return 12;
		case DATA_FORMAT_R32G32B32A32_UINT:
		case DATA_FORMAT_R32G32B32A32_SINT:
		case DATA_FORMAT_R32G32B32A32_SFLOAT: return 16;
		case DATA_FORMAT_R64_UINT:
		case DATA_FORMAT_R64_SINT:
		case DATA_FORMAT_R64_SFLOAT: return 8;
		case DATA_FORMAT_R64G64_UINT:
		case DATA_FORMAT_R64G64_SINT:
		case DATA_FORMAT_R64G64_SFLOAT: return 16;
		case DATA_FORMAT_R64G64B64_UINT:
		case DATA_FORMAT_R64G64B64_SINT:
		case DATA_FORMAT_R64G64B64_SFLOAT: return 24;
		case DATA_FORMAT_R64G64B64A64_UINT:
		case DATA_FORMAT_R64G64B64A64_SINT:
		case DATA_FORMAT_R64G64B64A64_SFLOAT: return 32;
		case DATA_FORMAT_B10G11R11_UFLOAT_PACK32:
		case DATA_FORMAT_E5B9G9R9_UFLOAT_PACK32: return 4;
		case DATA_FORMAT_D16_UNORM: return 2;
		case DATA_FORMAT_X8_D24_UNORM_PACK32: return 4;
		case DATA_FORMAT_D32_SFLOAT: return 4;
		case DATA_FORMAT_S8_UINT: return 1;
		case DATA_FORMAT_D16_UNORM_S8_UINT: return 4;
		case DATA_FORMAT_D24_UNORM_S8_UINT: return 4;
		case DATA_FORMAT_D32_SFLOAT_S8_UINT:
			return 5; //?
		case DATA_FORMAT_BC1_RGB_UNORM_BLOCK:
		case DATA_FORMAT_BC1_RGB_SRGB_BLOCK:
		case DATA_FORMAT_BC1_RGBA_UNORM_BLOCK:
		case DATA_FORMAT_BC1_RGBA_SRGB_BLOCK:
		case DATA_FORMAT_BC2_UNORM_BLOCK:
		case DATA_FORMAT_BC2_SRGB_BLOCK:
		case DATA_FORMAT_BC3_UNORM_BLOCK:
		case DATA_FORMAT_BC3_SRGB_BLOCK:
		case DATA_FORMAT_BC4_UNORM_BLOCK:
		case DATA_FORMAT_BC4_SNORM_BLOCK:
		case DATA_FORMAT_BC5_UNORM_BLOCK:
		case DATA_FORMAT_BC5_SNORM_BLOCK:
		case DATA_FORMAT_BC6H_UFLOAT_BLOCK:
		case DATA_FORMAT_BC6H_SFLOAT_BLOCK:
		case DATA_FORMAT_BC7_UNORM_BLOCK:
		case DATA_FORMAT_BC7_SRGB_BLOCK: return 1;
		case DATA_FORMAT_ETC2_R8G8B8_UNORM_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8_SRGB_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8A1_UNORM_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8A1_SRGB_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8A8_UNORM_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8A8_SRGB_BLOCK: return 1;
		case DATA_FORMAT_EAC_R11_UNORM_BLOCK:
		case DATA_FORMAT_EAC_R11_SNORM_BLOCK:
		case DATA_FORMAT_EAC_R11G11_UNORM_BLOCK:
		case DATA_FORMAT_EAC_R11G11_SNORM_BLOCK: return 1;
		case DATA_FORMAT_ASTC_4x4_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_4x4_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_5x4_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_5x4_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_5x5_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_5x5_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_6x5_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_6x5_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_6x6_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_6x6_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_8x5_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_8x5_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_8x6_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_8x6_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_8x8_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_8x8_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_10x5_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_10x5_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_10x6_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_10x6_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_10x8_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_10x8_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_10x10_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_10x10_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_12x10_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_12x10_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_12x12_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_12x12_SRGB_BLOCK: return 1;
		case DATA_FORMAT_G8B8G8R8_422_UNORM:
		case DATA_FORMAT_B8G8R8G8_422_UNORM: return 4;
		case DATA_FORMAT_G8_B8_R8_3PLANE_420_UNORM:
		case DATA_FORMAT_G8_B8R8_2PLANE_420_UNORM:
		case DATA_FORMAT_G8_B8_R8_3PLANE_422_UNORM:
		case DATA_FORMAT_G8_B8R8_2PLANE_422_UNORM:
		case DATA_FORMAT_G8_B8_R8_3PLANE_444_UNORM: return 4;
		case DATA_FORMAT_R10X6_UNORM_PACK16:
		case DATA_FORMAT_R10X6G10X6_UNORM_2PACK16:
		case DATA_FORMAT_R10X6G10X6B10X6A10X6_UNORM_4PACK16:
		case DATA_FORMAT_G10X6B10X6G10X6R10X6_422_UNORM_4PACK16:
		case DATA_FORMAT_B10X6G10X6R10X6G10X6_422_UNORM_4PACK16:
		case DATA_FORMAT_G10X6_B10X6_R10X6_3PLANE_420_UNORM_3PACK16:
		case DATA_FORMAT_G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16:
		case DATA_FORMAT_G10X6_B10X6_R10X6_3PLANE_422_UNORM_3PACK16:
		case DATA_FORMAT_G10X6_B10X6R10X6_2PLANE_422_UNORM_3PACK16:
		case DATA_FORMAT_G10X6_B10X6_R10X6_3PLANE_444_UNORM_3PACK16:
		case DATA_FORMAT_R12X4_UNORM_PACK16:
		case DATA_FORMAT_R12X4G12X4_UNORM_2PACK16:
		case DATA_FORMAT_R12X4G12X4B12X4A12X4_UNORM_4PACK16:
		case DATA_FORMAT_G12X4B12X4G12X4R12X4_422_UNORM_4PACK16:
		case DATA_FORMAT_B12X4G12X4R12X4G12X4_422_UNORM_4PACK16:
		case DATA_FORMAT_G12X4_B12X4_R12X4_3PLANE_420_UNORM_3PACK16:
		case DATA_FORMAT_G12X4_B12X4R12X4_2PLANE_420_UNORM_3PACK16:
		case DATA_FORMAT_G12X4_B12X4_R12X4_3PLANE_422_UNORM_3PACK16:
		case DATA_FORMAT_G12X4_B12X4R12X4_2PLANE_422_UNORM_3PACK16:
		case DATA_FORMAT_G12X4_B12X4_R12X4_3PLANE_444_UNORM_3PACK16: return 2;
		case DATA_FORMAT_G16B16G16R16_422_UNORM:
		case DATA_FORMAT_B16G16R16G16_422_UNORM:
		case DATA_FORMAT_G16_B16_R16_3PLANE_420_UNORM:
		case DATA_FORMAT_G16_B16R16_2PLANE_420_UNORM:
		case DATA_FORMAT_G16_B16_R16_3PLANE_422_UNORM:
		case DATA_FORMAT_G16_B16R16_2PLANE_422_UNORM:
		case DATA_FORMAT_G16_B16_R16_3PLANE_444_UNORM: return 8;
		case DATA_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG:
		case DATA_FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG:
		case DATA_FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG:
		case DATA_FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG:
		case DATA_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG:
		case DATA_FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG:
		case DATA_FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG:
		case DATA_FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG: return 1;
		default: {
			ERR_PRINT("Format not handled, bug");
		}
	}

	return 1;
}

// https://www.khronos.org/registry/DataFormat/specs/1.1/dataformat.1.1.pdf

void RenderingDeviceVulkan::get_compressed_image_format_block_dimensions(DataFormat p_format, uint32_t &r_w, uint32_t &r_h) {

	switch (p_format) {
		case DATA_FORMAT_BC1_RGB_UNORM_BLOCK:
		case DATA_FORMAT_BC1_RGB_SRGB_BLOCK:
		case DATA_FORMAT_BC1_RGBA_UNORM_BLOCK:
		case DATA_FORMAT_BC1_RGBA_SRGB_BLOCK:
		case DATA_FORMAT_BC2_UNORM_BLOCK:
		case DATA_FORMAT_BC2_SRGB_BLOCK:
		case DATA_FORMAT_BC3_UNORM_BLOCK:
		case DATA_FORMAT_BC3_SRGB_BLOCK:
		case DATA_FORMAT_BC4_UNORM_BLOCK:
		case DATA_FORMAT_BC4_SNORM_BLOCK:
		case DATA_FORMAT_BC5_UNORM_BLOCK:
		case DATA_FORMAT_BC5_SNORM_BLOCK:
		case DATA_FORMAT_BC6H_UFLOAT_BLOCK:
		case DATA_FORMAT_BC6H_SFLOAT_BLOCK:
		case DATA_FORMAT_BC7_UNORM_BLOCK:
		case DATA_FORMAT_BC7_SRGB_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8_UNORM_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8_SRGB_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8A1_UNORM_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8A1_SRGB_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8A8_UNORM_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8A8_SRGB_BLOCK:
		case DATA_FORMAT_EAC_R11_UNORM_BLOCK:
		case DATA_FORMAT_EAC_R11_SNORM_BLOCK:
		case DATA_FORMAT_EAC_R11G11_UNORM_BLOCK:
		case DATA_FORMAT_EAC_R11G11_SNORM_BLOCK:
		case DATA_FORMAT_ASTC_4x4_UNORM_BLOCK: //again, not sure about astc
		case DATA_FORMAT_ASTC_4x4_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_5x4_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_5x4_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_5x5_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_5x5_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_6x5_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_6x5_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_6x6_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_6x6_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_8x5_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_8x5_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_8x6_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_8x6_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_8x8_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_8x8_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_10x5_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_10x5_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_10x6_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_10x6_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_10x8_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_10x8_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_10x10_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_10x10_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_12x10_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_12x10_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_12x12_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_12x12_SRGB_BLOCK:
			r_w = 4;
			r_h = 4;
			return;
		case DATA_FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG:
		case DATA_FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG:
		case DATA_FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG:
		case DATA_FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG:
			r_w = 4;
			r_h = 4;
			return;
		case DATA_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG:
		case DATA_FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG:
		case DATA_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG:
		case DATA_FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG:
			r_w = 8;
			r_h = 4;
			return;
		default: {
			r_w = 1;
			r_h = 1;
		}
	}
}

uint32_t RenderingDeviceVulkan::get_compressed_image_format_block_byte_size(DataFormat p_format) {

	switch (p_format) {
		case DATA_FORMAT_BC1_RGB_UNORM_BLOCK:
		case DATA_FORMAT_BC1_RGB_SRGB_BLOCK:
		case DATA_FORMAT_BC1_RGBA_UNORM_BLOCK:
		case DATA_FORMAT_BC1_RGBA_SRGB_BLOCK: return 8;
		case DATA_FORMAT_BC2_UNORM_BLOCK:
		case DATA_FORMAT_BC2_SRGB_BLOCK: return 16;
		case DATA_FORMAT_BC3_UNORM_BLOCK:
		case DATA_FORMAT_BC3_SRGB_BLOCK: return 16;
		case DATA_FORMAT_BC4_UNORM_BLOCK:
		case DATA_FORMAT_BC4_SNORM_BLOCK: return 8;
		case DATA_FORMAT_BC5_UNORM_BLOCK:
		case DATA_FORMAT_BC5_SNORM_BLOCK: return 16;
		case DATA_FORMAT_BC6H_UFLOAT_BLOCK:
		case DATA_FORMAT_BC6H_SFLOAT_BLOCK: return 16;
		case DATA_FORMAT_BC7_UNORM_BLOCK:
		case DATA_FORMAT_BC7_SRGB_BLOCK: return 16;
		case DATA_FORMAT_ETC2_R8G8B8_UNORM_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8_SRGB_BLOCK: return 8;
		case DATA_FORMAT_ETC2_R8G8B8A1_UNORM_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8A1_SRGB_BLOCK: return 8;
		case DATA_FORMAT_ETC2_R8G8B8A8_UNORM_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8A8_SRGB_BLOCK: return 16;
		case DATA_FORMAT_EAC_R11_UNORM_BLOCK:
		case DATA_FORMAT_EAC_R11_SNORM_BLOCK: return 8;
		case DATA_FORMAT_EAC_R11G11_UNORM_BLOCK:
		case DATA_FORMAT_EAC_R11G11_SNORM_BLOCK: return 16;
		case DATA_FORMAT_ASTC_4x4_UNORM_BLOCK: //again, not sure about astc
		case DATA_FORMAT_ASTC_4x4_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_5x4_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_5x4_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_5x5_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_5x5_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_6x5_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_6x5_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_6x6_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_6x6_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_8x5_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_8x5_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_8x6_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_8x6_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_8x8_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_8x8_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_10x5_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_10x5_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_10x6_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_10x6_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_10x8_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_10x8_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_10x10_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_10x10_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_12x10_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_12x10_SRGB_BLOCK:
		case DATA_FORMAT_ASTC_12x12_UNORM_BLOCK:
		case DATA_FORMAT_ASTC_12x12_SRGB_BLOCK:
			return 8; //wrong
		case DATA_FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG:
		case DATA_FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG:
		case DATA_FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG:
		case DATA_FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG:
		case DATA_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG:
		case DATA_FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG:
		case DATA_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG:
		case DATA_FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG:
			return 8; //what varies is resolution
		default: {
		}
	}
	return 1;
}

uint32_t RenderingDeviceVulkan::get_compressed_image_format_pixel_rshift(DataFormat p_format) {

	switch (p_format) {
		case DATA_FORMAT_BC1_RGB_UNORM_BLOCK: //these formats are half byte size, so rshift is 1
		case DATA_FORMAT_BC1_RGB_SRGB_BLOCK:
		case DATA_FORMAT_BC1_RGBA_UNORM_BLOCK:
		case DATA_FORMAT_BC1_RGBA_SRGB_BLOCK:
		case DATA_FORMAT_BC4_UNORM_BLOCK:
		case DATA_FORMAT_BC4_SNORM_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8_UNORM_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8_SRGB_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8A1_UNORM_BLOCK:
		case DATA_FORMAT_ETC2_R8G8B8A1_SRGB_BLOCK:
		case DATA_FORMAT_EAC_R11_UNORM_BLOCK:
		case DATA_FORMAT_EAC_R11_SNORM_BLOCK:
		case DATA_FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG:
		case DATA_FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG:
		case DATA_FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG:
		case DATA_FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG: return 1;
		case DATA_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG: //these formats are quarter byte size, so rshift is 1
		case DATA_FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG:
		case DATA_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG:
		case DATA_FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG: return 2;
		default: {
		}
	}

	return 0;
}

bool RenderingDeviceVulkan::format_has_stencil(DataFormat p_format) {
	switch (p_format) {
		case DATA_FORMAT_S8_UINT:
		case DATA_FORMAT_D16_UNORM_S8_UINT:
		case DATA_FORMAT_D24_UNORM_S8_UINT:
		case DATA_FORMAT_D32_SFLOAT_S8_UINT: {
			return true;
		}
		default: {
		}
	}
	return false;
}

uint32_t RenderingDeviceVulkan::get_image_format_required_size(DataFormat p_format, uint32_t p_width, uint32_t p_height, uint32_t p_depth, uint32_t p_mipmaps, uint32_t *r_blockw, uint32_t *r_blockh, uint32_t *r_depth) {

	ERR_FAIL_COND_V(p_mipmaps == 0, 0);
	uint32_t w = p_width;
	uint32_t h = p_height;
	uint32_t d = p_depth;

	uint32_t size = 0;

	uint32_t pixel_size = get_image_format_pixel_size(p_format);
	uint32_t pixel_rshift = get_compressed_image_format_pixel_rshift(p_format);
	uint32_t blockw, blockh;
	get_compressed_image_format_block_dimensions(p_format, blockw, blockh);

	for (uint32_t i = 0; i < p_mipmaps; i++) {
		uint32_t bw = w % blockw != 0 ? w + (blockw - w % blockw) : w;
		uint32_t bh = h % blockh != 0 ? h + (blockh - h % blockh) : h;

		uint32_t s = bw * bh;

		s *= pixel_size;
		s >>= pixel_rshift;
		size += s * d;
		if (r_blockw) {
			*r_blockw = bw;
		}
		if (r_blockh) {
			*r_blockh = bh;
		}
		if (r_depth) {
			*r_depth = d;
		}
		w = MAX(blockw, w >> 1);
		h = MAX(blockh, h >> 1);
		d = MAX(1, d >> 1);
	}

	return size;
}

uint32_t RenderingDeviceVulkan::get_image_required_mipmaps(uint32_t p_width, uint32_t p_height, uint32_t p_depth) {

	//formats and block size don't really matter here since they can all go down to 1px (even if block is larger)
	int w = p_width;
	int h = p_height;
	int d = p_depth;

	int mipmaps = 1;

	while (true) {

		if (w == 1 && h == 1 && d == 1) {
			break;
		}

		w = MAX(1, w >> 1);
		h = MAX(1, h >> 1);
		d = MAX(1, d >> 1);

		mipmaps++;
	};

	return mipmaps;
}

///////////////////////

const VkCompareOp RenderingDeviceVulkan::compare_operators[RenderingDevice::COMPARE_OP_MAX] = {
	VK_COMPARE_OP_NEVER,
	VK_COMPARE_OP_LESS,
	VK_COMPARE_OP_EQUAL,
	VK_COMPARE_OP_LESS_OR_EQUAL,
	VK_COMPARE_OP_GREATER,
	VK_COMPARE_OP_NOT_EQUAL,
	VK_COMPARE_OP_GREATER_OR_EQUAL,
	VK_COMPARE_OP_ALWAYS
};

const VkStencilOp RenderingDeviceVulkan::stencil_operations[RenderingDevice::STENCIL_OP_MAX] = {
	VK_STENCIL_OP_KEEP,
	VK_STENCIL_OP_ZERO,
	VK_STENCIL_OP_REPLACE,
	VK_STENCIL_OP_INCREMENT_AND_CLAMP,
	VK_STENCIL_OP_DECREMENT_AND_CLAMP,
	VK_STENCIL_OP_INVERT,
	VK_STENCIL_OP_INCREMENT_AND_WRAP,
	VK_STENCIL_OP_DECREMENT_AND_WRAP
};

const VkSampleCountFlagBits RenderingDeviceVulkan::rasterization_sample_count[RenderingDevice::TEXTURE_SAMPLES_MAX] = {
	VK_SAMPLE_COUNT_1_BIT,
	VK_SAMPLE_COUNT_2_BIT,
	VK_SAMPLE_COUNT_4_BIT,
	VK_SAMPLE_COUNT_8_BIT,
	VK_SAMPLE_COUNT_16_BIT,
	VK_SAMPLE_COUNT_32_BIT,
	VK_SAMPLE_COUNT_64_BIT,
};

const VkLogicOp RenderingDeviceVulkan::logic_operations[RenderingDevice::LOGIC_OP_MAX] = {
	VK_LOGIC_OP_CLEAR,
	VK_LOGIC_OP_AND,
	VK_LOGIC_OP_AND_REVERSE,
	VK_LOGIC_OP_COPY,
	VK_LOGIC_OP_AND_INVERTED,
	VK_LOGIC_OP_NO_OP,
	VK_LOGIC_OP_XOR,
	VK_LOGIC_OP_OR,
	VK_LOGIC_OP_NOR,
	VK_LOGIC_OP_EQUIVALENT,
	VK_LOGIC_OP_INVERT,
	VK_LOGIC_OP_OR_REVERSE,
	VK_LOGIC_OP_COPY_INVERTED,
	VK_LOGIC_OP_OR_INVERTED,
	VK_LOGIC_OP_NAND,
	VK_LOGIC_OP_SET
};

const VkBlendFactor RenderingDeviceVulkan::blend_factors[RenderingDevice::BLEND_FACTOR_MAX] = {
	VK_BLEND_FACTOR_ZERO,
	VK_BLEND_FACTOR_ONE,
	VK_BLEND_FACTOR_SRC_COLOR,
	VK_BLEND_FACTOR_ONE_MINUS_SRC_COLOR,
	VK_BLEND_FACTOR_DST_COLOR,
	VK_BLEND_FACTOR_ONE_MINUS_DST_COLOR,
	VK_BLEND_FACTOR_SRC_ALPHA,
	VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA,
	VK_BLEND_FACTOR_DST_ALPHA,
	VK_BLEND_FACTOR_ONE_MINUS_DST_ALPHA,
	VK_BLEND_FACTOR_CONSTANT_COLOR,
	VK_BLEND_FACTOR_ONE_MINUS_CONSTANT_COLOR,
	VK_BLEND_FACTOR_CONSTANT_ALPHA,
	VK_BLEND_FACTOR_ONE_MINUS_CONSTANT_ALPHA,
	VK_BLEND_FACTOR_SRC_ALPHA_SATURATE,
	VK_BLEND_FACTOR_SRC1_COLOR,
	VK_BLEND_FACTOR_ONE_MINUS_SRC1_COLOR,
	VK_BLEND_FACTOR_SRC1_ALPHA,
	VK_BLEND_FACTOR_ONE_MINUS_SRC1_ALPHA
};
const VkBlendOp RenderingDeviceVulkan::blend_operations[RenderingDevice::BLEND_OP_MAX] = {
	VK_BLEND_OP_ADD,
	VK_BLEND_OP_SUBTRACT,
	VK_BLEND_OP_REVERSE_SUBTRACT,
	VK_BLEND_OP_MIN,
	VK_BLEND_OP_MAX
};

const VkSamplerAddressMode RenderingDeviceVulkan::address_modes[RenderingDevice::SAMPLER_REPEAT_MODE_MAX] = {
	VK_SAMPLER_ADDRESS_MODE_REPEAT,
	VK_SAMPLER_ADDRESS_MODE_MIRRORED_REPEAT,
	VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE,
	VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER,
	VK_SAMPLER_ADDRESS_MODE_MIRROR_CLAMP_TO_EDGE
};

const VkBorderColor RenderingDeviceVulkan::sampler_border_colors[RenderingDevice::SAMPLER_BORDER_COLOR_MAX] = {
	VK_BORDER_COLOR_FLOAT_TRANSPARENT_BLACK,
	VK_BORDER_COLOR_INT_TRANSPARENT_BLACK,
	VK_BORDER_COLOR_FLOAT_OPAQUE_BLACK,
	VK_BORDER_COLOR_INT_OPAQUE_BLACK,
	VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE,
	VK_BORDER_COLOR_INT_OPAQUE_WHITE
};

const VkImageType RenderingDeviceVulkan::vulkan_image_type[RenderingDevice::TEXTURE_TYPE_MAX] = {
	VK_IMAGE_TYPE_1D,
	VK_IMAGE_TYPE_2D,
	VK_IMAGE_TYPE_3D,
	VK_IMAGE_TYPE_2D,
	VK_IMAGE_TYPE_1D,
	VK_IMAGE_TYPE_2D,
	VK_IMAGE_TYPE_2D
};

/***************************/
/**** BUFFER MANAGEMENT ****/
/***************************/

Error RenderingDeviceVulkan::_buffer_allocate(Buffer *p_buffer, uint32_t p_size, uint32_t p_usage, VmaMemoryUsage p_mapping) {
	VkBufferCreateInfo bufferInfo;
	bufferInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
	bufferInfo.pNext = nullptr;
	bufferInfo.flags = 0;
	bufferInfo.size = p_size;
	bufferInfo.usage = p_usage;
	bufferInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	bufferInfo.queueFamilyIndexCount = 0;
	bufferInfo.pQueueFamilyIndices = nullptr;

	VmaAllocationCreateInfo allocInfo;
	allocInfo.flags = 0;
	allocInfo.usage = p_mapping;
	allocInfo.requiredFlags = 0;
	allocInfo.preferredFlags = 0;
	allocInfo.memoryTypeBits = 0;
	allocInfo.pool = nullptr;
	allocInfo.pUserData = nullptr;

	VkResult err = vmaCreateBuffer(allocator, &bufferInfo, &allocInfo, &p_buffer->buffer, &p_buffer->allocation, nullptr);
	ERR_FAIL_COND_V_MSG(err, ERR_CANT_CREATE, "Can't create buffer of size: " + itos(p_size) + ", error " + itos(err) + ".");
	p_buffer->size = p_size;
	p_buffer->buffer_info.buffer = p_buffer->buffer;
	p_buffer->buffer_info.offset = 0;
	p_buffer->buffer_info.range = p_size;

	return OK;
}

Error RenderingDeviceVulkan::_buffer_free(Buffer *p_buffer) {
	ERR_FAIL_COND_V(p_buffer->size == 0, ERR_INVALID_PARAMETER);

	vmaDestroyBuffer(allocator, p_buffer->buffer, p_buffer->allocation);
	p_buffer->buffer = nullptr;
	p_buffer->allocation = nullptr;
	p_buffer->size = 0;

	return OK;
}

Error RenderingDeviceVulkan::_insert_staging_block() {

	VkBufferCreateInfo bufferInfo;
	bufferInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
	bufferInfo.pNext = nullptr;
	bufferInfo.flags = 0;
	bufferInfo.size = staging_buffer_block_size;
	bufferInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
	bufferInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	bufferInfo.queueFamilyIndexCount = 0;
	bufferInfo.pQueueFamilyIndices = nullptr;

	VmaAllocationCreateInfo allocInfo;
	allocInfo.flags = 0;
	allocInfo.usage = VMA_MEMORY_USAGE_CPU_ONLY;
	allocInfo.requiredFlags = 0;
	allocInfo.preferredFlags = 0;
	allocInfo.memoryTypeBits = 0;
	allocInfo.pool = nullptr;
	allocInfo.pUserData = nullptr;

	StagingBufferBlock block;

	VkResult err = vmaCreateBuffer(allocator, &bufferInfo, &allocInfo, &block.buffer, &block.allocation, nullptr);
	ERR_FAIL_COND_V_MSG(err, ERR_CANT_CREATE, "vmaCreateBuffer failed with error " + itos(err) + ".");

	block.frame_used = 0;
	block.fill_amount = 0;

	staging_buffer_blocks.insert(staging_buffer_current, block);
	return OK;
}

Error RenderingDeviceVulkan::_staging_buffer_allocate(uint32_t p_amount, uint32_t p_required_align, uint32_t &r_alloc_offset, uint32_t &r_alloc_size, bool p_can_segment, bool p_on_draw_command_buffer) {
	//determine a block to use

	r_alloc_size = p_amount;

	while (true) {

		r_alloc_offset = 0;

		//see if we can use current block
		if (staging_buffer_blocks[staging_buffer_current].frame_used == frames_drawn) {
			//we used this block this frame, let's see if there is still room

			uint32_t write_from = staging_buffer_blocks[staging_buffer_current].fill_amount;

			{
				uint32_t align_remainder = write_from % p_required_align;
				if (align_remainder != 0) {
					write_from += p_required_align - align_remainder;
				}
			}

			int32_t available_bytes = int32_t(staging_buffer_block_size) - int32_t(write_from);

			if ((int32_t)p_amount < available_bytes) {
				//all is good, we should be ok, all will fit
				r_alloc_offset = write_from;
			} else if (p_can_segment && available_bytes >= (int32_t)p_required_align) {
				//ok all won't fit but at least we can fit a chunkie
				//all is good, update what needs to be written to
				r_alloc_offset = write_from;
				r_alloc_size = available_bytes - (available_bytes % p_required_align);

			} else {
				//can't fit it into this buffer.
				//will need to try next buffer

				staging_buffer_current = (staging_buffer_current + 1) % staging_buffer_blocks.size();

				// before doing anything, though, let's check that we didn't manage to fill all blocks
				// possible in a single frame
				if (staging_buffer_blocks[staging_buffer_current].frame_used == frames_drawn) {
					//guess we did.. ok, let's see if we can insert a new block..
					if (staging_buffer_blocks.size() * staging_buffer_block_size < staging_buffer_max_size) {
						//we can, so we are safe
						Error err = _insert_staging_block();
						if (err) {
							return err;
						}
						//claim for this frame
						staging_buffer_blocks.write[staging_buffer_current].frame_used = frames_drawn;
					} else {
						// Ok, worst case scenario, all the staging buffers belong to this frame
						// and this frame is not even done.
						// If this is the main thread, it means the user is likely loading a lot of resources at once,
						// otherwise, the thread should just be blocked until the next frame (currently unimplemented)

						if (false) { //separate thread from render

							//block_until_next_frame()
							continue;
						} else {

							//flush EVERYTHING including setup commands. IF not immediate, also need to flush the draw commands
							_flush(true);

							//clear the whole staging buffer
							for (int i = 0; i < staging_buffer_blocks.size(); i++) {
								staging_buffer_blocks.write[i].frame_used = 0;
								staging_buffer_blocks.write[i].fill_amount = 0;
							}
							//claim current
							staging_buffer_blocks.write[staging_buffer_current].frame_used = frames_drawn;
						}
					}

				} else {
					//not from current frame, so continue and try again
					continue;
				}
			}

		} else if (staging_buffer_blocks[staging_buffer_current].frame_used <= frames_drawn - frame_count) {
			//this is an old block, which was already processed, let's reuse
			staging_buffer_blocks.write[staging_buffer_current].frame_used = frames_drawn;
			staging_buffer_blocks.write[staging_buffer_current].fill_amount = 0;
		} else if (staging_buffer_blocks[staging_buffer_current].frame_used > frames_drawn - frame_count) {
			//this block may still be in use, let's not touch it unless we have to, so.. can we create a new one?
			if (staging_buffer_blocks.size() * staging_buffer_block_size < staging_buffer_max_size) {
				//we are still allowed to create a new block, so let's do that and insert it for current pos
				Error err = _insert_staging_block();
				if (err) {
					return err;
				}
				//claim for this frame
				staging_buffer_blocks.write[staging_buffer_current].frame_used = frames_drawn;
			} else {
				// oops, we are out of room and we can't create more.
				// let's flush older frames.
				// The logic here is that if a game is loading a lot of data from the main thread, it will need to be stalled anyway.
				// If loading from a separate thread, we can block that thread until next frame when more room is made (not currently implemented, though).

				if (false) {
					//separate thread from render
					//block_until_next_frame()
					continue; //and try again
				} else {

					_flush(false);

					for (int i = 0; i < staging_buffer_blocks.size(); i++) {
						//clear all blocks but the ones from this frame
						int block_idx = (i + staging_buffer_current) % staging_buffer_blocks.size();
						if (staging_buffer_blocks[block_idx].frame_used == frames_drawn) {
							break; //ok, we reached something from this frame, abort
						}

						staging_buffer_blocks.write[block_idx].frame_used = 0;
						staging_buffer_blocks.write[block_idx].fill_amount = 0;
					}

					//claim for current frame
					staging_buffer_blocks.write[staging_buffer_current].frame_used = frames_drawn;
				}
			}
		}

		//all was good, break
		break;
	}

	staging_buffer_used = true;

	return OK;
}

Error RenderingDeviceVulkan::_buffer_update(Buffer *p_buffer, size_t p_offset, const uint8_t *p_data, size_t p_data_size, bool p_use_draw_command_buffer, uint32_t p_required_align) {

	//submitting may get chunked for various reasons, so convert this to a task
	size_t to_submit = p_data_size;
	size_t submit_from = 0;

	while (to_submit > 0) {

		uint32_t block_write_offset;
		uint32_t block_write_amount;

		Error err = _staging_buffer_allocate(MIN(to_submit, staging_buffer_block_size), p_required_align, block_write_offset, block_write_amount, p_use_draw_command_buffer);
		if (err) {
			return err;
		}

		//map staging buffer (It's CPU and coherent)

		void *data_ptr = nullptr;
		{
			VkResult vkerr = vmaMapMemory(allocator, staging_buffer_blocks[staging_buffer_current].allocation, &data_ptr);
			ERR_FAIL_COND_V_MSG(vkerr, ERR_CANT_CREATE, "vmaMapMemory failed with error " + itos(vkerr) + ".");
		}

		//copy to staging buffer
		copymem(((uint8_t *)data_ptr) + block_write_offset, p_data + submit_from, block_write_amount);

		//unmap
		vmaUnmapMemory(allocator, staging_buffer_blocks[staging_buffer_current].allocation);
		//insert a command to copy this

		VkBufferCopy region;
		region.srcOffset = block_write_offset;
		region.dstOffset = submit_from + p_offset;
		region.size = block_write_amount;

		vkCmdCopyBuffer(p_use_draw_command_buffer ? frames[frame].draw_command_buffer : frames[frame].setup_command_buffer, staging_buffer_blocks[staging_buffer_current].buffer, p_buffer->buffer, 1, &region);

		staging_buffer_blocks.write[staging_buffer_current].fill_amount = block_write_offset + block_write_amount;

		to_submit -= block_write_amount;
		submit_from += block_write_amount;
	}

	return OK;
}

void RenderingDeviceVulkan::_memory_barrier(VkPipelineStageFlags p_src_stage_mask, VkPipelineStageFlags p_dst_stage_mask, VkAccessFlags p_src_access, VkAccessFlags p_dst_sccess, bool p_sync_with_draw) {

	VkMemoryBarrier mem_barrier;
	mem_barrier.sType = VK_STRUCTURE_TYPE_MEMORY_BARRIER;
	mem_barrier.pNext = nullptr;
	mem_barrier.srcAccessMask = p_src_access;
	mem_barrier.dstAccessMask = p_dst_sccess;

	vkCmdPipelineBarrier(p_sync_with_draw ? frames[frame].draw_command_buffer : frames[frame].setup_command_buffer, p_src_stage_mask, p_dst_stage_mask, 0, 1, &mem_barrier, 0, nullptr, 0, nullptr);
}

void RenderingDeviceVulkan::_full_barrier(bool p_sync_with_draw) {
	//used for debug
	_memory_barrier(VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
			VK_ACCESS_INDIRECT_COMMAND_READ_BIT |
					VK_ACCESS_INDEX_READ_BIT |
					VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT |
					VK_ACCESS_UNIFORM_READ_BIT |
					VK_ACCESS_INPUT_ATTACHMENT_READ_BIT |
					VK_ACCESS_SHADER_READ_BIT |
					VK_ACCESS_SHADER_WRITE_BIT |
					VK_ACCESS_COLOR_ATTACHMENT_READ_BIT |
					VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT |
					VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT |
					VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT |
					VK_ACCESS_TRANSFER_READ_BIT |
					VK_ACCESS_TRANSFER_WRITE_BIT |
					VK_ACCESS_HOST_READ_BIT |
					VK_ACCESS_HOST_WRITE_BIT,
			VK_ACCESS_INDIRECT_COMMAND_READ_BIT |
					VK_ACCESS_INDEX_READ_BIT |
					VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT |
					VK_ACCESS_UNIFORM_READ_BIT |
					VK_ACCESS_INPUT_ATTACHMENT_READ_BIT |
					VK_ACCESS_SHADER_READ_BIT |
					VK_ACCESS_SHADER_WRITE_BIT |
					VK_ACCESS_COLOR_ATTACHMENT_READ_BIT |
					VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT |
					VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT |
					VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT |
					VK_ACCESS_TRANSFER_READ_BIT |
					VK_ACCESS_TRANSFER_WRITE_BIT |
					VK_ACCESS_HOST_READ_BIT |
					VK_ACCESS_HOST_WRITE_BIT,
			p_sync_with_draw);
}

void RenderingDeviceVulkan::_buffer_memory_barrier(VkBuffer buffer, uint64_t p_from, uint64_t p_size, VkPipelineStageFlags p_src_stage_mask, VkPipelineStageFlags p_dst_stage_mask, VkAccessFlags p_src_access, VkAccessFlags p_dst_sccess, bool p_sync_with_draw) {

	VkBufferMemoryBarrier buffer_mem_barrier;
	buffer_mem_barrier.sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER;
	buffer_mem_barrier.pNext = nullptr;
	buffer_mem_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
	buffer_mem_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
	buffer_mem_barrier.srcAccessMask = p_src_access;
	buffer_mem_barrier.dstAccessMask = p_dst_sccess;
	buffer_mem_barrier.buffer = buffer;
	buffer_mem_barrier.offset = p_from;
	buffer_mem_barrier.size = p_size;

	vkCmdPipelineBarrier(p_sync_with_draw ? frames[frame].draw_command_buffer : frames[frame].setup_command_buffer, p_src_stage_mask, p_dst_stage_mask, 0, 0, nullptr, 1, &buffer_mem_barrier, 0, nullptr);
}

/*****************/
/**** TEXTURE ****/
/*****************/

RID RenderingDeviceVulkan::texture_create(const TextureFormat &p_format, const TextureView &p_view, const Vector<Vector<uint8_t>> &p_data) {

	_THREAD_SAFE_METHOD_

	VkImageCreateInfo image_create_info;
	image_create_info.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
	image_create_info.pNext = nullptr;
	image_create_info.flags = 0;

	VkImageFormatListCreateInfoKHR format_list_create_info;
	Vector<VkFormat> allowed_formats;

	if (p_format.shareable_formats.size()) {
		image_create_info.flags |= VK_IMAGE_CREATE_MUTABLE_FORMAT_BIT;
		for (int i = 0; i < p_format.shareable_formats.size(); i++) {
			allowed_formats.push_back(vulkan_formats[p_format.shareable_formats[i]]);
		}

		format_list_create_info.sType = VK_STRUCTURE_TYPE_IMAGE_FORMAT_LIST_CREATE_INFO_KHR;
		format_list_create_info.pNext = nullptr;
		format_list_create_info.viewFormatCount = allowed_formats.size();
		format_list_create_info.pViewFormats = allowed_formats.ptr();
		image_create_info.pNext = &format_list_create_info;

		ERR_FAIL_COND_V_MSG(p_format.shareable_formats.find(p_format.format) == -1, RID(),
				"If supplied a list of shareable formats, the current format must be present in the list");
		ERR_FAIL_COND_V_MSG(p_view.format_override != DATA_FORMAT_MAX && p_format.shareable_formats.find(p_view.format_override) == -1, RID(),
				"If supplied a list of shareable formats, the current view format override must be present in the list");
	}
	if (p_format.type == TEXTURE_TYPE_CUBE || p_format.type == TEXTURE_TYPE_CUBE_ARRAY) {
		image_create_info.flags |= VK_IMAGE_CREATE_CUBE_COMPATIBLE_BIT;
	}
	/*if (p_format.type == TEXTURE_TYPE_2D || p_format.type == TEXTURE_TYPE_2D_ARRAY) {
		image_create_info.flags |= VK_IMAGE_CREATE_2D_ARRAY_COMPATIBLE_BIT;
	}*/

	ERR_FAIL_INDEX_V(p_format.type, TEXTURE_TYPE_MAX, RID());

	image_create_info.imageType = vulkan_image_type[p_format.type];

	ERR_FAIL_COND_V_MSG(p_format.width < 1, RID(), "Width must be equal or greater than 1 for all textures");

	image_create_info.format = vulkan_formats[p_format.format];

	image_create_info.extent.width = p_format.width;
	if (image_create_info.imageType == VK_IMAGE_TYPE_3D || image_create_info.imageType == VK_IMAGE_TYPE_2D) {
		ERR_FAIL_COND_V_MSG(p_format.height < 1, RID(), "Height must be equal or greater than 1 for 2D and 3D textures");
		image_create_info.extent.height = p_format.height;
	} else {
		image_create_info.extent.height = 1;
	}

	if (image_create_info.imageType == VK_IMAGE_TYPE_3D) {
		ERR_FAIL_COND_V_MSG(p_format.depth < 1, RID(), "Depth must be equal or greater than 1 for 3D textures");
		image_create_info.extent.depth = p_format.depth;
	} else {
		image_create_info.extent.depth = 1;
	}

	ERR_FAIL_COND_V(p_format.mipmaps < 1, RID());

	image_create_info.mipLevels = p_format.mipmaps;

	if (p_format.type == TEXTURE_TYPE_1D_ARRAY || p_format.type == TEXTURE_TYPE_2D_ARRAY || p_format.type == TEXTURE_TYPE_CUBE_ARRAY || p_format.type == TEXTURE_TYPE_CUBE) {
		ERR_FAIL_COND_V_MSG(p_format.array_layers < 1, RID(),
				"Amount of layers must be equal or greater than 1 for arrays and cubemaps.");
		ERR_FAIL_COND_V_MSG((p_format.type == TEXTURE_TYPE_CUBE_ARRAY || p_format.type == TEXTURE_TYPE_CUBE) && (p_format.array_layers % 6) != 0, RID(),
				"Cubemap and cubemap array textures must provide a layer number that is multiple of 6");
		image_create_info.arrayLayers = p_format.array_layers;
	} else {
		image_create_info.arrayLayers = 1;
	}

	ERR_FAIL_INDEX_V(p_format.samples, TEXTURE_SAMPLES_MAX, RID());

	image_create_info.samples = rasterization_sample_count[p_format.samples];
	image_create_info.tiling = (p_format.usage_bits & TEXTURE_USAGE_CPU_READ_BIT) ? VK_IMAGE_TILING_LINEAR : VK_IMAGE_TILING_OPTIMAL;

	//usage
	image_create_info.usage = 0;

	if (p_format.usage_bits & TEXTURE_USAGE_SAMPLING_BIT) {
		image_create_info.usage |= VK_IMAGE_USAGE_SAMPLED_BIT;
	}

	if (p_format.usage_bits & TEXTURE_USAGE_STORAGE_BIT) {
		image_create_info.usage |= VK_IMAGE_USAGE_STORAGE_BIT;
	}

	if (p_format.usage_bits & TEXTURE_USAGE_COLOR_ATTACHMENT_BIT) {
		image_create_info.usage |= VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
	}

	if (p_format.usage_bits & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) {
		image_create_info.usage |= VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
	}

	if (p_format.usage_bits & TEXTURE_USAGE_CAN_UPDATE_BIT) {
		image_create_info.usage |= VK_IMAGE_USAGE_TRANSFER_DST_BIT;
	}
	if (p_format.usage_bits & TEXTURE_USAGE_CAN_COPY_FROM_BIT) {
		image_create_info.usage |= VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
	}

	if (p_format.usage_bits & TEXTURE_USAGE_CAN_COPY_TO_BIT) {
		image_create_info.usage |= VK_IMAGE_USAGE_TRANSFER_DST_BIT;
	}

	image_create_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	image_create_info.queueFamilyIndexCount = 0;
	image_create_info.pQueueFamilyIndices = nullptr;
	image_create_info.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;

	uint32_t required_mipmaps = get_image_required_mipmaps(image_create_info.extent.width, image_create_info.extent.height, image_create_info.extent.depth);

	ERR_FAIL_COND_V_MSG(required_mipmaps < image_create_info.mipLevels, RID(),
			"Too many mipmaps requested for texture format and dimensions (" + itos(image_create_info.mipLevels) + "), maximum allowed: (" + itos(required_mipmaps) + ").");

	if (p_data.size()) {

		ERR_FAIL_COND_V_MSG(!(p_format.usage_bits & TEXTURE_USAGE_CAN_UPDATE_BIT), RID(),
				"Texture needs the TEXTURE_USAGE_CAN_UPDATE_BIT usage flag in order to be updated at initialization or later");

		int expected_images = image_create_info.arrayLayers;
		ERR_FAIL_COND_V_MSG(p_data.size() != expected_images, RID(),
				"Default supplied data for image format is of invalid length (" + itos(p_data.size()) + "), should be (" + itos(expected_images) + ").");

		for (uint32_t i = 0; i < image_create_info.arrayLayers; i++) {
			uint32_t required_size = get_image_format_required_size(p_format.format, image_create_info.extent.width, image_create_info.extent.height, image_create_info.extent.depth, image_create_info.mipLevels);
			ERR_FAIL_COND_V_MSG((uint32_t)p_data[i].size() != required_size, RID(),
					"Data for slice index " + itos(i) + " (mapped to layer " + itos(i) + ") differs in size (supplied: " + itos(p_data[i].size()) + ") than what is required by the format (" + itos(required_size) + ").");
		}
	}

	{
		//validate that this image is supported for the intended use
		VkFormatProperties properties;
		vkGetPhysicalDeviceFormatProperties(context->get_physical_device(), image_create_info.format, &properties);
		VkFormatFeatureFlags flags;

		String format_text = "'" + String(named_formats[p_format.format]) + "'";

		if (p_format.usage_bits & TEXTURE_USAGE_CPU_READ_BIT) {
			flags = properties.linearTilingFeatures;
			format_text += " (with CPU read bit)";
		} else {
			flags = properties.optimalTilingFeatures;
		}

		if (p_format.usage_bits & TEXTURE_USAGE_SAMPLING_BIT && !(flags & VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT)) {
			ERR_FAIL_V_MSG(RID(), "Format " + format_text + " does not support usage as sampling texture.");
		}

		if (p_format.usage_bits & TEXTURE_USAGE_COLOR_ATTACHMENT_BIT && !(flags & VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BIT)) {
			ERR_FAIL_V_MSG(RID(), "Format " + format_text + " does not support usage as color attachment.");
		}

		if (p_format.usage_bits & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT && !(flags & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT)) {
			printf("vkformat: %x\n", image_create_info.format);
			ERR_FAIL_V_MSG(RID(), "Format " + format_text + " does not support usage as depth-stencil attachment.");
		}

		if (p_format.usage_bits & TEXTURE_USAGE_STORAGE_BIT && !(flags & VK_FORMAT_FEATURE_STORAGE_IMAGE_BIT)) {
			ERR_FAIL_V_MSG(RID(), "Format " + format_text + " does not support usage as storage image.");
		}

		if (p_format.usage_bits & TEXTURE_USAGE_STORAGE_ATOMIC_BIT && !(flags & VK_FORMAT_FEATURE_STORAGE_IMAGE_ATOMIC_BIT)) {
			ERR_FAIL_V_MSG(RID(), "Format " + format_text + " does not support usage as atomic storage image.");
		}
	}

	//some view validation

	if (p_view.format_override != DATA_FORMAT_MAX) {
		ERR_FAIL_INDEX_V(p_view.format_override, DATA_FORMAT_MAX, RID());
	}
	ERR_FAIL_INDEX_V(p_view.swizzle_r, TEXTURE_SWIZZLE_MAX, RID());
	ERR_FAIL_INDEX_V(p_view.swizzle_g, TEXTURE_SWIZZLE_MAX, RID());
	ERR_FAIL_INDEX_V(p_view.swizzle_b, TEXTURE_SWIZZLE_MAX, RID());
	ERR_FAIL_INDEX_V(p_view.swizzle_a, TEXTURE_SWIZZLE_MAX, RID());

	//allocate memory

	VmaAllocationCreateInfo allocInfo;
	allocInfo.flags = 0;
	allocInfo.usage = p_format.usage_bits & TEXTURE_USAGE_CPU_READ_BIT ? VMA_MEMORY_USAGE_CPU_ONLY : VMA_MEMORY_USAGE_GPU_ONLY;
	allocInfo.requiredFlags = 0;
	allocInfo.preferredFlags = 0;
	allocInfo.memoryTypeBits = 0;
	allocInfo.pool = nullptr;
	allocInfo.pUserData = nullptr;

	Texture texture;

	VkResult err = vmaCreateImage(allocator, &image_create_info, &allocInfo, &texture.image, &texture.allocation, &texture.allocation_info);
	ERR_FAIL_COND_V_MSG(err, RID(), "vmaCreateImage failed with error " + itos(err) + ".");

	texture.type = p_format.type;
	texture.format = p_format.format;
	texture.width = image_create_info.extent.width;
	texture.height = image_create_info.extent.height;
	texture.depth = image_create_info.extent.depth;
	texture.layers = image_create_info.arrayLayers;
	texture.mipmaps = image_create_info.mipLevels;
	texture.usage_flags = p_format.usage_bits;
	texture.samples = p_format.samples;
	texture.allowed_shared_formats = p_format.shareable_formats;

	//set base layout based on usage priority

	if (p_format.usage_bits & TEXTURE_USAGE_SAMPLING_BIT) {
		//first priority, readable
		texture.layout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;

	} else if (p_format.usage_bits & TEXTURE_USAGE_STORAGE_BIT) {
		//second priority, storage

		texture.layout = VK_IMAGE_LAYOUT_GENERAL;

	} else if (p_format.usage_bits & TEXTURE_USAGE_COLOR_ATTACHMENT_BIT) {
		//third priority, color or depth

		texture.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;

	} else if (p_format.usage_bits & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) {

		texture.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;

	} else {
		texture.layout = VK_IMAGE_LAYOUT_GENERAL;
	}

	if (p_format.usage_bits & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) {

		texture.read_aspect_mask = VK_IMAGE_ASPECT_DEPTH_BIT;
		texture.barrier_aspect_mask = VK_IMAGE_ASPECT_DEPTH_BIT;

		if (format_has_stencil(p_format.format)) {
			texture.barrier_aspect_mask |= VK_IMAGE_ASPECT_STENCIL_BIT;
		}
	} else {
		texture.read_aspect_mask = VK_IMAGE_ASPECT_COLOR_BIT;
		texture.barrier_aspect_mask = VK_IMAGE_ASPECT_COLOR_BIT;
	}

	texture.bound = false;

	//create view

	VkImageViewCreateInfo image_view_create_info;
	image_view_create_info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
	image_view_create_info.pNext = nullptr;
	image_view_create_info.flags = 0;
	image_view_create_info.image = texture.image;

	static const VkImageViewType view_types[TEXTURE_TYPE_MAX] = {
		VK_IMAGE_VIEW_TYPE_1D,
		VK_IMAGE_VIEW_TYPE_2D,
		VK_IMAGE_VIEW_TYPE_3D,
		VK_IMAGE_VIEW_TYPE_CUBE,
		VK_IMAGE_VIEW_TYPE_1D_ARRAY,
		VK_IMAGE_VIEW_TYPE_2D_ARRAY,
		VK_IMAGE_VIEW_TYPE_CUBE_ARRAY,
	};

	image_view_create_info.viewType = view_types[p_format.type];
	if (p_view.format_override == DATA_FORMAT_MAX) {
		image_view_create_info.format = image_create_info.format;
	} else {
		image_view_create_info.format = vulkan_formats[p_view.format_override];
	}

	static const VkComponentSwizzle component_swizzles[TEXTURE_SWIZZLE_MAX] = {
		VK_COMPONENT_SWIZZLE_IDENTITY,
		VK_COMPONENT_SWIZZLE_ZERO,
		VK_COMPONENT_SWIZZLE_ONE,
		VK_COMPONENT_SWIZZLE_R,
		VK_COMPONENT_SWIZZLE_G,
		VK_COMPONENT_SWIZZLE_B,
		VK_COMPONENT_SWIZZLE_A
	};

	image_view_create_info.components.r = component_swizzles[p_view.swizzle_r];
	image_view_create_info.components.g = component_swizzles[p_view.swizzle_g];
	image_view_create_info.components.b = component_swizzles[p_view.swizzle_b];
	image_view_create_info.components.a = component_swizzles[p_view.swizzle_a];

	image_view_create_info.subresourceRange.baseMipLevel = 0;
	image_view_create_info.subresourceRange.levelCount = image_create_info.mipLevels;
	image_view_create_info.subresourceRange.baseArrayLayer = 0;
	image_view_create_info.subresourceRange.layerCount = image_create_info.arrayLayers;
	if (p_format.usage_bits & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) {
		image_view_create_info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
	} else {
		image_view_create_info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
	}

	err = vkCreateImageView(device, &image_view_create_info, nullptr, &texture.view);

	if (err) {
		vmaDestroyImage(allocator, texture.image, texture.allocation);
		ERR_FAIL_V_MSG(RID(), "vkCreateImageView failed with error " + itos(err) + ".");
	}

	//barrier to set layout
	{
		VkImageMemoryBarrier image_memory_barrier;
		image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
		image_memory_barrier.pNext = nullptr;
		image_memory_barrier.srcAccessMask = 0;
		image_memory_barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
		image_memory_barrier.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
		image_memory_barrier.newLayout = texture.layout;
		image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		image_memory_barrier.image = texture.image;
		image_memory_barrier.subresourceRange.aspectMask = texture.barrier_aspect_mask;
		image_memory_barrier.subresourceRange.baseMipLevel = 0;
		image_memory_barrier.subresourceRange.levelCount = image_create_info.mipLevels;
		image_memory_barrier.subresourceRange.baseArrayLayer = 0;
		image_memory_barrier.subresourceRange.layerCount = image_create_info.arrayLayers;

		vkCmdPipelineBarrier(frames[frame].setup_command_buffer, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0, 0, nullptr, 0, nullptr, 1, &image_memory_barrier);
	}

	RID id = texture_owner.make_rid(texture);

	if (p_data.size()) {

		for (uint32_t i = 0; i < image_create_info.arrayLayers; i++) {
			texture_update(id, i, p_data[i]);
		}
	}
	return id;
}

RID RenderingDeviceVulkan::texture_create_shared(const TextureView &p_view, RID p_with_texture) {

	_THREAD_SAFE_METHOD_

	Texture *src_texture = texture_owner.getornull(p_with_texture);
	ERR_FAIL_COND_V(!src_texture, RID());

	if (src_texture->owner.is_valid()) { //ahh this is a share
		p_with_texture = src_texture->owner;
		src_texture = texture_owner.getornull(src_texture->owner);
		ERR_FAIL_COND_V(!src_texture, RID()); //this is a bug
	}

	//create view

	Texture texture = *src_texture;

	VkImageViewCreateInfo image_view_create_info;
	image_view_create_info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
	image_view_create_info.pNext = nullptr;
	image_view_create_info.flags = 0;
	image_view_create_info.image = texture.image;

	static const VkImageViewType view_types[TEXTURE_TYPE_MAX] = {
		VK_IMAGE_VIEW_TYPE_1D,
		VK_IMAGE_VIEW_TYPE_2D,
		VK_IMAGE_VIEW_TYPE_3D,
		VK_IMAGE_VIEW_TYPE_CUBE,
		VK_IMAGE_VIEW_TYPE_1D_ARRAY,
		VK_IMAGE_VIEW_TYPE_2D_ARRAY,
		VK_IMAGE_VIEW_TYPE_CUBE_ARRAY,
	};

	image_view_create_info.viewType = view_types[texture.type];
	if (p_view.format_override == DATA_FORMAT_MAX || p_view.format_override == texture.format) {
		image_view_create_info.format = vulkan_formats[texture.format];
	} else {
		ERR_FAIL_INDEX_V(p_view.format_override, DATA_FORMAT_MAX, RID());

		ERR_FAIL_COND_V_MSG(texture.allowed_shared_formats.find(p_view.format_override) == -1, RID(),
				"Format override is not in the list of allowed shareable formats for original texture.");
		image_view_create_info.format = vulkan_formats[p_view.format_override];
	}

	static const VkComponentSwizzle component_swizzles[TEXTURE_SWIZZLE_MAX] = {
		VK_COMPONENT_SWIZZLE_IDENTITY,
		VK_COMPONENT_SWIZZLE_ZERO,
		VK_COMPONENT_SWIZZLE_ONE,
		VK_COMPONENT_SWIZZLE_R,
		VK_COMPONENT_SWIZZLE_G,
		VK_COMPONENT_SWIZZLE_B,
		VK_COMPONENT_SWIZZLE_A
	};

	image_view_create_info.components.r = component_swizzles[p_view.swizzle_r];
	image_view_create_info.components.g = component_swizzles[p_view.swizzle_g];
	image_view_create_info.components.b = component_swizzles[p_view.swizzle_b];
	image_view_create_info.components.a = component_swizzles[p_view.swizzle_a];

	image_view_create_info.subresourceRange.baseMipLevel = 0;
	image_view_create_info.subresourceRange.levelCount = texture.mipmaps;
	image_view_create_info.subresourceRange.layerCount = texture.layers;
	image_view_create_info.subresourceRange.baseArrayLayer = 0;

	if (texture.usage_flags & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) {
		image_view_create_info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
	} else {
		image_view_create_info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
	}

	VkResult err = vkCreateImageView(device, &image_view_create_info, nullptr, &texture.view);
	ERR_FAIL_COND_V_MSG(err, RID(), "vkCreateImageView failed with error " + itos(err) + ".");

	texture.owner = p_with_texture;
	RID id = texture_owner.make_rid(texture);
	_add_dependency(id, p_with_texture);

	return id;
}

RID RenderingDeviceVulkan::texture_create_shared_from_slice(const TextureView &p_view, RID p_with_texture, uint32_t p_layer, uint32_t p_mipmap, TextureSliceType p_slice_type) {

	_THREAD_SAFE_METHOD_

	Texture *src_texture = texture_owner.getornull(p_with_texture);
	ERR_FAIL_COND_V(!src_texture, RID());

	if (src_texture->owner.is_valid()) { //ahh this is a share
		p_with_texture = src_texture->owner;
		src_texture = texture_owner.getornull(src_texture->owner);
		ERR_FAIL_COND_V(!src_texture, RID()); //this is a bug
	}

	ERR_FAIL_COND_V_MSG(p_slice_type == TEXTURE_SLICE_CUBEMAP && (src_texture->type != TEXTURE_TYPE_CUBE && src_texture->type != TEXTURE_TYPE_CUBE_ARRAY), RID(),
			"Can only create a cubemap slice from a cubemap or cubemap array mipmap");

	ERR_FAIL_COND_V_MSG(p_slice_type == TEXTURE_SLICE_3D && src_texture->type != TEXTURE_TYPE_3D, RID(),
			"Can only create a 3D slice from a 3D texture");

	//create view

	ERR_FAIL_UNSIGNED_INDEX_V(p_mipmap, src_texture->mipmaps, RID());
	ERR_FAIL_UNSIGNED_INDEX_V(p_layer, src_texture->layers, RID());

	Texture texture = *src_texture;
	get_image_format_required_size(texture.format, texture.width, texture.height, texture.depth, p_mipmap + 1, &texture.width, &texture.height);
	texture.mipmaps = 1;
	texture.layers = p_slice_type == TEXTURE_SLICE_CUBEMAP ? 6 : 1;

	VkImageViewCreateInfo image_view_create_info;
	image_view_create_info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
	image_view_create_info.pNext = nullptr;
	image_view_create_info.flags = 0;
	image_view_create_info.image = texture.image;

	static const VkImageViewType view_types[TEXTURE_TYPE_MAX] = {
		VK_IMAGE_VIEW_TYPE_1D,
		VK_IMAGE_VIEW_TYPE_2D,
		VK_IMAGE_VIEW_TYPE_2D,
		VK_IMAGE_VIEW_TYPE_2D,
		VK_IMAGE_VIEW_TYPE_1D,
		VK_IMAGE_VIEW_TYPE_2D,
		VK_IMAGE_VIEW_TYPE_2D,
	};

	image_view_create_info.viewType = p_slice_type == TEXTURE_SLICE_CUBEMAP ? VK_IMAGE_VIEW_TYPE_CUBE : (p_slice_type == TEXTURE_SLICE_3D ? VK_IMAGE_VIEW_TYPE_3D : view_types[texture.type]);
	if (p_view.format_override == DATA_FORMAT_MAX || p_view.format_override == texture.format) {
		image_view_create_info.format = vulkan_formats[texture.format];
	} else {
		ERR_FAIL_INDEX_V(p_view.format_override, DATA_FORMAT_MAX, RID());

		ERR_FAIL_COND_V_MSG(texture.allowed_shared_formats.find(p_view.format_override) == -1, RID(),
				"Format override is not in the list of allowed shareable formats for original texture.");
		image_view_create_info.format = vulkan_formats[p_view.format_override];
	}

	static const VkComponentSwizzle component_swizzles[TEXTURE_SWIZZLE_MAX] = {
		VK_COMPONENT_SWIZZLE_IDENTITY,
		VK_COMPONENT_SWIZZLE_ZERO,
		VK_COMPONENT_SWIZZLE_ONE,
		VK_COMPONENT_SWIZZLE_R,
		VK_COMPONENT_SWIZZLE_G,
		VK_COMPONENT_SWIZZLE_B,
		VK_COMPONENT_SWIZZLE_A
	};

	image_view_create_info.components.r = component_swizzles[p_view.swizzle_r];
	image_view_create_info.components.g = component_swizzles[p_view.swizzle_g];
	image_view_create_info.components.b = component_swizzles[p_view.swizzle_b];
	image_view_create_info.components.a = component_swizzles[p_view.swizzle_a];

	if (p_slice_type == TEXTURE_SLICE_CUBEMAP) {
		ERR_FAIL_COND_V_MSG(p_layer >= src_texture->layers, RID(),
				"Specified layer is invalid for cubemap");
		ERR_FAIL_COND_V_MSG((p_layer % 6) != 0, RID(),
				"Specified layer must be a multiple of 6.");
	}
	image_view_create_info.subresourceRange.baseMipLevel = p_mipmap;
	image_view_create_info.subresourceRange.levelCount = 1;
	image_view_create_info.subresourceRange.layerCount = p_slice_type == TEXTURE_SLICE_CUBEMAP ? 6 : 1;
	image_view_create_info.subresourceRange.baseArrayLayer = p_layer;

	if (texture.usage_flags & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) {
		image_view_create_info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
	} else {
		image_view_create_info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
	}

	VkResult err = vkCreateImageView(device, &image_view_create_info, nullptr, &texture.view);
	ERR_FAIL_COND_V_MSG(err, RID(), "vkCreateImageView failed with error " + itos(err) + ".");

	texture.owner = p_with_texture;
	RID id = texture_owner.make_rid(texture);
	_add_dependency(id, p_with_texture);

	return id;
}

Error RenderingDeviceVulkan::texture_update(RID p_texture, uint32_t p_layer, const Vector<uint8_t> &p_data, bool p_sync_with_draw) {

	_THREAD_SAFE_METHOD_

	ERR_FAIL_COND_V_MSG(draw_list && p_sync_with_draw, ERR_INVALID_PARAMETER,
			"Updating textures in 'sync to draw' mode is forbidden during creation of a draw list");

	Texture *texture = texture_owner.getornull(p_texture);
	ERR_FAIL_COND_V(!texture, ERR_INVALID_PARAMETER);

	if (texture->owner != RID()) {
		p_texture = texture->owner;
		texture = texture_owner.getornull(texture->owner);
		ERR_FAIL_COND_V(!texture, ERR_BUG); //this is a bug
	}

	ERR_FAIL_COND_V_MSG(texture->bound, ERR_CANT_ACQUIRE_RESOURCE,
			"Texture can't be updated while a render pass that uses it is being created. Ensure render pass is finalized (and that it was created with RENDER_PASS_CONTENTS_FINISH) to unbind this texture.");

	ERR_FAIL_COND_V_MSG(!(texture->usage_flags & TEXTURE_USAGE_CAN_UPDATE_BIT), ERR_INVALID_PARAMETER,
			"Texture requires the TEXTURE_USAGE_CAN_UPDATE_BIT in order to be updatable.");

	uint32_t layer_count = texture->layers;
	if (texture->type == TEXTURE_TYPE_CUBE || texture->type == TEXTURE_TYPE_CUBE_ARRAY) {
		layer_count *= 6;
	}
	ERR_FAIL_COND_V(p_layer >= layer_count, ERR_INVALID_PARAMETER);

	uint32_t width, height;
	uint32_t image_size = get_image_format_required_size(texture->format, texture->width, texture->height, texture->depth, texture->mipmaps, &width, &height);
	uint32_t required_size = image_size;
	uint32_t required_align = get_compressed_image_format_block_byte_size(texture->format);
	if (required_align == 1) {
		required_align = get_image_format_pixel_size(texture->format);
	}
	if ((required_align % 4) != 0) { //alignment rules are really strange
		required_align *= 4;
	}

	ERR_FAIL_COND_V_MSG(required_size != (uint32_t)p_data.size(), ERR_INVALID_PARAMETER,
			"Required size for texture update (" + itos(required_size) + ") does not match data supplied size (" + itos(p_data.size()) + ").");

	uint32_t region_size = texture_upload_region_size_px;

	const uint8_t *r = p_data.ptr();

	VkCommandBuffer command_buffer = p_sync_with_draw ? frames[frame].draw_command_buffer : frames[frame].setup_command_buffer;

	//barrier to transfer
	{
		VkImageMemoryBarrier image_memory_barrier;
		image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
		image_memory_barrier.pNext = nullptr;
		image_memory_barrier.srcAccessMask = 0;
		image_memory_barrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
		image_memory_barrier.oldLayout = texture->layout;
		image_memory_barrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;

		image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		image_memory_barrier.image = texture->image;
		image_memory_barrier.subresourceRange.aspectMask = texture->barrier_aspect_mask;
		image_memory_barrier.subresourceRange.baseMipLevel = 0;
		image_memory_barrier.subresourceRange.levelCount = texture->mipmaps;
		image_memory_barrier.subresourceRange.baseArrayLayer = p_layer;
		image_memory_barrier.subresourceRange.layerCount = 1;

		vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, nullptr, 0, nullptr, 1, &image_memory_barrier);
	}

	uint32_t mipmap_offset = 0;
	for (uint32_t mm_i = 0; mm_i < texture->mipmaps; mm_i++) {

		uint32_t depth;
		uint32_t image_total = get_image_format_required_size(texture->format, texture->width, texture->height, texture->depth, mm_i + 1, &width, &height, &depth);

		const uint8_t *read_ptr_mipmap = r + mipmap_offset;
		image_size = image_total - mipmap_offset;

		for (uint32_t z = 0; z < depth; z++) { //for 3D textures, depth may be > 0

			const uint8_t *read_ptr = read_ptr_mipmap + image_size * z / depth;

			for (uint32_t x = 0; x < width; x += region_size) {
				for (uint32_t y = 0; y < height; y += region_size) {

					uint32_t region_w = MIN(region_size, width - x);
					uint32_t region_h = MIN(region_size, height - y);

					uint32_t pixel_size = get_image_format_pixel_size(texture->format);
					uint32_t to_allocate = region_w * region_h * pixel_size;
					to_allocate >>= get_compressed_image_format_pixel_rshift(texture->format);

					uint32_t alloc_offset, alloc_size;
					Error err = _staging_buffer_allocate(to_allocate, required_align, alloc_offset, alloc_size, false, p_sync_with_draw);
					ERR_FAIL_COND_V(err, ERR_CANT_CREATE);

					uint8_t *write_ptr;

					{ //map
						void *data_ptr = nullptr;
						VkResult vkerr = vmaMapMemory(allocator, staging_buffer_blocks[staging_buffer_current].allocation, &data_ptr);
						ERR_FAIL_COND_V_MSG(vkerr, ERR_CANT_CREATE, "vmaMapMemory failed with error " + itos(vkerr) + ".");
						write_ptr = (uint8_t *)data_ptr;
						write_ptr += alloc_offset;
					}

					uint32_t block_w, block_h;
					get_compressed_image_format_block_dimensions(texture->format, block_w, block_h);

					ERR_FAIL_COND_V(region_w % block_w, ERR_BUG);
					ERR_FAIL_COND_V(region_h % block_h, ERR_BUG);

					if (block_w != 1 || block_h != 1) {
						//compressed image (blocks)
						//must copy a block region

						uint32_t block_size = get_compressed_image_format_block_byte_size(texture->format);
						//re-create current variables in blocky format
						uint32_t xb = x / block_w;
						uint32_t yb = y / block_h;
						uint32_t wb = width / block_w;
						//uint32_t hb = height / block_h;
						uint32_t region_wb = region_w / block_w;
						uint32_t region_hb = region_h / block_h;
						for (uint32_t xr = 0; xr < region_wb; xr++) {
							for (uint32_t yr = 0; yr < region_hb; yr++) {
								uint32_t src_offset = ((yr + yb) * wb + xr + xb) * block_size;
								uint32_t dst_offset = (yr * region_wb + xr) * block_size;
								//copy block
								for (uint32_t i = 0; i < block_size; i++) {
									write_ptr[dst_offset + i] = read_ptr[src_offset + i];
								}
							}
						}

					} else {
						//regular image (pixels)
						//must copy a pixel region

						for (uint32_t xr = 0; xr < region_w; xr++) {
							for (uint32_t yr = 0; yr < region_h; yr++) {
								uint32_t src_offset = ((yr + y) * width + xr + x) * pixel_size;
								uint32_t dst_offset = (yr * region_w + xr) * pixel_size;
								//copy block
								for (uint32_t i = 0; i < pixel_size; i++) {

									write_ptr[dst_offset + i] = read_ptr[src_offset + i];
								}
							}
						}
					}

					{ //unmap
						vmaUnmapMemory(allocator, staging_buffer_blocks[staging_buffer_current].allocation);
					}

					VkBufferImageCopy buffer_image_copy;
					buffer_image_copy.bufferOffset = alloc_offset;
					buffer_image_copy.bufferRowLength = 0; //tigthly packed
					buffer_image_copy.bufferImageHeight = 0; //tigthly packed

					buffer_image_copy.imageSubresource.aspectMask = texture->read_aspect_mask;
					buffer_image_copy.imageSubresource.mipLevel = mm_i;
					buffer_image_copy.imageSubresource.baseArrayLayer = p_layer;
					buffer_image_copy.imageSubresource.layerCount = 1;

					buffer_image_copy.imageOffset.x = x;
					buffer_image_copy.imageOffset.y = y;
					buffer_image_copy.imageOffset.z = z;

					buffer_image_copy.imageExtent.width = region_w;
					buffer_image_copy.imageExtent.height = region_h;
					buffer_image_copy.imageExtent.depth = 1;

					vkCmdCopyBufferToImage(command_buffer, staging_buffer_blocks[staging_buffer_current].buffer, texture->image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &buffer_image_copy);

					staging_buffer_blocks.write[staging_buffer_current].fill_amount += alloc_size;
				}
			}
		}

		mipmap_offset = image_total;
	}

	//barrier to restore layout
	{
		VkImageMemoryBarrier image_memory_barrier;
		image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
		image_memory_barrier.pNext = nullptr;
		image_memory_barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
		image_memory_barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
		image_memory_barrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
		image_memory_barrier.newLayout = texture->layout;
		image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		image_memory_barrier.image = texture->image;
		image_memory_barrier.subresourceRange.aspectMask = texture->barrier_aspect_mask;
		image_memory_barrier.subresourceRange.baseMipLevel = 0;
		image_memory_barrier.subresourceRange.levelCount = texture->mipmaps;
		image_memory_barrier.subresourceRange.baseArrayLayer = p_layer;
		image_memory_barrier.subresourceRange.layerCount = 1;

		vkCmdPipelineBarrier(command_buffer, VK_ACCESS_TRANSFER_WRITE_BIT, VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0, 0, nullptr, 0, nullptr, 1, &image_memory_barrier);
	}

	return OK;
}

Vector<uint8_t> RenderingDeviceVulkan::_texture_get_data_from_image(Texture *tex, VkImage p_image, VmaAllocation p_allocation, uint32_t p_layer, bool p_2d) {

	uint32_t width, height, depth;
	uint32_t image_size = get_image_format_required_size(tex->format, tex->width, tex->height, p_2d ? 1 : tex->depth, tex->mipmaps, &width, &height, &depth);

	Vector<uint8_t> image_data;
	image_data.resize(image_size);

	void *img_mem;
	vmaMapMemory(allocator, p_allocation, &img_mem);

	uint32_t blockw, blockh;
	get_compressed_image_format_block_dimensions(tex->format, blockw, blockh);
	uint32_t block_size = get_compressed_image_format_block_byte_size(tex->format);
	uint32_t pixel_size = get_image_format_pixel_size(tex->format);

	{
		uint8_t *w = image_data.ptrw();

		uint32_t mipmap_offset = 0;
		for (uint32_t mm_i = 0; mm_i < tex->mipmaps; mm_i++) {

			uint32_t image_total = get_image_format_required_size(tex->format, tex->width, tex->height, p_2d ? 1 : tex->depth, mm_i + 1, &width, &height, &depth);

			uint8_t *write_ptr_mipmap = w + mipmap_offset;
			image_size = image_total - mipmap_offset;

			VkImageSubresource image_sub_resorce;
			image_sub_resorce.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
			image_sub_resorce.arrayLayer = p_layer;
			image_sub_resorce.mipLevel = mm_i;
			VkSubresourceLayout layout;
			vkGetImageSubresourceLayout(device, p_image, &image_sub_resorce, &layout);

			for (uint32_t z = 0; z < depth; z++) {
				uint8_t *write_ptr = write_ptr_mipmap + z * image_size / depth;
				const uint8_t *slice_read_ptr = ((uint8_t *)img_mem) + layout.offset + z * layout.depthPitch;

				if (block_size > 1) {
					//compressed
					uint32_t line_width = (block_size * (width / blockw));
					for (uint32_t y = 0; y < height / blockh; y++) {
						const uint8_t *rptr = slice_read_ptr + y * layout.rowPitch;
						uint8_t *wptr = write_ptr + y * line_width;

						copymem(wptr, rptr, line_width);
					}

				} else {
					//uncompressed
					for (uint32_t y = 0; y < height; y++) {
						const uint8_t *rptr = slice_read_ptr + y * layout.rowPitch;
						uint8_t *wptr = write_ptr + y * pixel_size * width;
						copymem(wptr, rptr, pixel_size * width);
					}
				}
			}

			mipmap_offset = image_total;
		}
	}

	vmaUnmapMemory(allocator, p_allocation);

	return image_data;
}

Vector<uint8_t> RenderingDeviceVulkan::texture_get_data(RID p_texture, uint32_t p_layer) {

	_THREAD_SAFE_METHOD_

	Texture *tex = texture_owner.getornull(p_texture);
	ERR_FAIL_COND_V(!tex, Vector<uint8_t>());

	ERR_FAIL_COND_V_MSG(tex->bound, Vector<uint8_t>(),
			"Texture can't be retrieved while a render pass that uses it is being created. Ensure render pass is finalized (and that it was created with RENDER_PASS_CONTENTS_FINISH) to unbind this texture.");
	ERR_FAIL_COND_V_MSG(!(tex->usage_flags & TEXTURE_USAGE_CAN_COPY_FROM_BIT), Vector<uint8_t>(),
			"Texture requires the TEXTURE_USAGE_CAN_COPY_FROM_BIT in order to be retrieved.");

	uint32_t layer_count = tex->layers;
	if (tex->type == TEXTURE_TYPE_CUBE || tex->type == TEXTURE_TYPE_CUBE_ARRAY) {
		layer_count *= 6;
	}
	ERR_FAIL_COND_V(p_layer >= layer_count, Vector<uint8_t>());

	if (tex->usage_flags & TEXTURE_USAGE_CPU_READ_BIT) {
		//does not need anything fancy, map and read.
		return _texture_get_data_from_image(tex, tex->image, tex->allocation, p_layer);
	} else {

		//compute total image size
		uint32_t width, height, depth;
		uint32_t buffer_size = get_image_format_required_size(tex->format, tex->width, tex->height, tex->depth, tex->mipmaps, &width, &height, &depth);

		//allocate buffer
		VkCommandBuffer command_buffer = frames[frame].setup_command_buffer;
		Buffer tmp_buffer;
		_buffer_allocate(&tmp_buffer, buffer_size, VK_BUFFER_USAGE_TRANSFER_DST_BIT, VMA_MEMORY_USAGE_CPU_ONLY);

		{ //Source image barrier
			VkImageMemoryBarrier image_memory_barrier;
			image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
			image_memory_barrier.pNext = nullptr;
			image_memory_barrier.srcAccessMask = 0;
			image_memory_barrier.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
			image_memory_barrier.oldLayout = tex->layout;
			image_memory_barrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;

			image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.image = tex->image;
			image_memory_barrier.subresourceRange.aspectMask = tex->barrier_aspect_mask;
			image_memory_barrier.subresourceRange.baseMipLevel = 0;
			image_memory_barrier.subresourceRange.levelCount = tex->mipmaps;
			image_memory_barrier.subresourceRange.baseArrayLayer = p_layer;
			image_memory_barrier.subresourceRange.layerCount = 1;

			vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, nullptr, 0, nullptr, 1, &image_memory_barrier);
		}

		uint32_t computed_w = tex->width;
		uint32_t computed_h = tex->height;
		uint32_t computed_d = tex->depth;

		uint32_t prev_size = 0;
		uint32_t offset = 0;
		for (uint32_t i = 0; i < tex->mipmaps; i++) {

			VkBufferImageCopy buffer_image_copy;

			uint32_t image_size = get_image_format_required_size(tex->format, tex->width, tex->height, tex->depth, i + 1);
			uint32_t size = image_size - prev_size;
			prev_size = image_size;

			buffer_image_copy.bufferOffset = offset;
			buffer_image_copy.bufferImageHeight = 0;
			buffer_image_copy.bufferRowLength = 0;
			buffer_image_copy.imageSubresource.aspectMask = tex->read_aspect_mask;
			buffer_image_copy.imageSubresource.baseArrayLayer = p_layer;
			buffer_image_copy.imageSubresource.layerCount = 1;
			buffer_image_copy.imageSubresource.mipLevel = i;
			buffer_image_copy.imageOffset.x = 0;
			buffer_image_copy.imageOffset.y = 0;
			buffer_image_copy.imageOffset.z = 0;
			buffer_image_copy.imageExtent.width = computed_w;
			buffer_image_copy.imageExtent.height = computed_h;
			buffer_image_copy.imageExtent.depth = computed_d;

			vkCmdCopyImageToBuffer(command_buffer, tex->image, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, tmp_buffer.buffer, 1, &buffer_image_copy);

			computed_w = MAX(1, computed_w >> 1);
			computed_h = MAX(1, computed_h >> 1);
			computed_d = MAX(1, computed_d >> 1);
			offset += size;
		}

		{ //restore src
			VkImageMemoryBarrier image_memory_barrier;
			image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
			image_memory_barrier.pNext = nullptr;
			image_memory_barrier.srcAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
			image_memory_barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
			image_memory_barrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;
			image_memory_barrier.newLayout = tex->layout;
			image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.image = tex->image;
			image_memory_barrier.subresourceRange.aspectMask = tex->barrier_aspect_mask;
			image_memory_barrier.subresourceRange.baseMipLevel = 0;
			image_memory_barrier.subresourceRange.levelCount = tex->mipmaps;
			image_memory_barrier.subresourceRange.baseArrayLayer = p_layer;
			image_memory_barrier.subresourceRange.layerCount = 1;

			vkCmdPipelineBarrier(command_buffer, VK_ACCESS_TRANSFER_WRITE_BIT, VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0, 0, nullptr, 0, nullptr, 1, &image_memory_barrier);
		}

		_flush(true);

		void *buffer_mem;
		VkResult vkerr = vmaMapMemory(allocator, tmp_buffer.allocation, &buffer_mem);
		ERR_FAIL_COND_V_MSG(vkerr, Vector<uint8_t>(), "vmaMapMemory failed with error " + itos(vkerr) + ".");

		Vector<uint8_t> buffer_data;
		{

			buffer_data.resize(buffer_size);
			uint8_t *w = buffer_data.ptrw();
			copymem(w, buffer_mem, buffer_size);
		}

		vmaUnmapMemory(allocator, tmp_buffer.allocation);

		_buffer_free(&tmp_buffer);

		return buffer_data;
	}
}

bool RenderingDeviceVulkan::texture_is_shared(RID p_texture) {
	_THREAD_SAFE_METHOD_

	Texture *tex = texture_owner.getornull(p_texture);
	ERR_FAIL_COND_V(!tex, false);
	return tex->owner.is_valid();
}

bool RenderingDeviceVulkan::texture_is_valid(RID p_texture) {
	return texture_owner.owns(p_texture);
}

Error RenderingDeviceVulkan::texture_copy(RID p_from_texture, RID p_to_texture, const Vector3 &p_from, const Vector3 &p_to, const Vector3 &p_size, uint32_t p_src_mipmap, uint32_t p_dst_mipmap, uint32_t p_src_layer, uint32_t p_dst_layer, bool p_sync_with_draw) {

	_THREAD_SAFE_METHOD_

	Texture *src_tex = texture_owner.getornull(p_from_texture);
	ERR_FAIL_COND_V(!src_tex, ERR_INVALID_PARAMETER);

	ERR_FAIL_COND_V_MSG(p_sync_with_draw && src_tex->bound, ERR_INVALID_PARAMETER,
			"Source texture can't be copied while a render pass that uses it is being created. Ensure render pass is finalized (and that it was created with RENDER_PASS_CONTENTS_FINISH) to unbind this texture.");
	ERR_FAIL_COND_V_MSG(!(src_tex->usage_flags & TEXTURE_USAGE_CAN_COPY_FROM_BIT), ERR_INVALID_PARAMETER,
			"Source texture requires the TEXTURE_USAGE_CAN_COPY_FROM_BIT in order to be retrieved.");

	uint32_t src_layer_count = src_tex->layers;
	uint32_t src_width, src_height, src_depth;
	get_image_format_required_size(src_tex->format, src_tex->width, src_tex->height, src_tex->depth, p_src_mipmap + 1, &src_width, &src_height, &src_depth);
	if (src_tex->type == TEXTURE_TYPE_CUBE || src_tex->type == TEXTURE_TYPE_CUBE_ARRAY) {
		src_layer_count *= 6;
	}

	ERR_FAIL_COND_V(p_from.x < 0 || p_from.x + p_size.x > src_width, ERR_INVALID_PARAMETER);
	ERR_FAIL_COND_V(p_from.y < 0 || p_from.y + p_size.y > src_height, ERR_INVALID_PARAMETER);
	ERR_FAIL_COND_V(p_from.z < 0 || p_from.z + p_size.z > src_depth, ERR_INVALID_PARAMETER);
	ERR_FAIL_COND_V(p_src_mipmap >= src_tex->mipmaps, ERR_INVALID_PARAMETER);
	ERR_FAIL_COND_V(p_src_layer >= src_layer_count, ERR_INVALID_PARAMETER);

	Texture *dst_tex = texture_owner.getornull(p_to_texture);
	ERR_FAIL_COND_V(!dst_tex, ERR_INVALID_PARAMETER);

	ERR_FAIL_COND_V_MSG(p_sync_with_draw && dst_tex->bound, ERR_INVALID_PARAMETER,
			"Destination texture can't be copied while a render pass that uses it is being created. Ensure render pass is finalized (and that it was created with RENDER_PASS_CONTENTS_FINISH) to unbind this texture.");
	ERR_FAIL_COND_V_MSG(!(dst_tex->usage_flags & TEXTURE_USAGE_CAN_COPY_TO_BIT), ERR_INVALID_PARAMETER,
			"Destination texture requires the TEXTURE_USAGE_CAN_COPY_TO_BIT in order to be retrieved.");

	uint32_t dst_layer_count = dst_tex->layers;
	uint32_t dst_width, dst_height, dst_depth;
	get_image_format_required_size(dst_tex->format, dst_tex->width, dst_tex->height, dst_tex->depth, p_dst_mipmap + 1, &dst_width, &dst_height, &dst_depth);
	if (dst_tex->type == TEXTURE_TYPE_CUBE || dst_tex->type == TEXTURE_TYPE_CUBE_ARRAY) {
		dst_layer_count *= 6;
	}

	ERR_FAIL_COND_V(p_to.x < 0 || p_to.x + p_size.x > dst_width, ERR_INVALID_PARAMETER);
	ERR_FAIL_COND_V(p_to.y < 0 || p_to.y + p_size.y > dst_height, ERR_INVALID_PARAMETER);
	ERR_FAIL_COND_V(p_to.z < 0 || p_to.z + p_size.z > dst_depth, ERR_INVALID_PARAMETER);
	ERR_FAIL_COND_V(p_dst_mipmap >= dst_tex->mipmaps, ERR_INVALID_PARAMETER);
	ERR_FAIL_COND_V(p_dst_layer >= dst_layer_count, ERR_INVALID_PARAMETER);

	ERR_FAIL_COND_V_MSG(src_tex->read_aspect_mask != dst_tex->read_aspect_mask, ERR_INVALID_PARAMETER,
			"Source and destination texture must be of the same type (color or depth).");

	VkCommandBuffer command_buffer = p_sync_with_draw ? frames[frame].draw_command_buffer : frames[frame].setup_command_buffer;

	{

		//PRE Copy the image

		{ //Source
			VkImageMemoryBarrier image_memory_barrier;
			image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
			image_memory_barrier.pNext = nullptr;
			image_memory_barrier.srcAccessMask = 0;
			image_memory_barrier.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
			image_memory_barrier.oldLayout = src_tex->layout;
			image_memory_barrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;

			image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.image = src_tex->image;
			image_memory_barrier.subresourceRange.aspectMask = src_tex->barrier_aspect_mask;
			image_memory_barrier.subresourceRange.baseMipLevel = p_src_mipmap;
			image_memory_barrier.subresourceRange.levelCount = 1;
			image_memory_barrier.subresourceRange.baseArrayLayer = p_src_layer;
			image_memory_barrier.subresourceRange.layerCount = 1;

			vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, nullptr, 0, nullptr, 1, &image_memory_barrier);
		}
		{ //Dest
			VkImageMemoryBarrier image_memory_barrier;
			image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
			image_memory_barrier.pNext = nullptr;
			image_memory_barrier.srcAccessMask = 0;
			image_memory_barrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
			image_memory_barrier.oldLayout = dst_tex->layout;
			image_memory_barrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;

			image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.image = dst_tex->image;
			image_memory_barrier.subresourceRange.aspectMask = dst_tex->read_aspect_mask;
			image_memory_barrier.subresourceRange.baseMipLevel = p_dst_mipmap;
			image_memory_barrier.subresourceRange.levelCount = 1;
			image_memory_barrier.subresourceRange.baseArrayLayer = p_dst_layer;
			image_memory_barrier.subresourceRange.layerCount = 1;

			vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, nullptr, 0, nullptr, 1, &image_memory_barrier);
		}

		//COPY

		{

			VkImageCopy image_copy_region;
			image_copy_region.srcSubresource.aspectMask = src_tex->read_aspect_mask;
			image_copy_region.srcSubresource.baseArrayLayer = p_src_layer;
			image_copy_region.srcSubresource.layerCount = 1;
			image_copy_region.srcSubresource.mipLevel = p_src_mipmap;
			image_copy_region.srcOffset.x = p_from.x;
			image_copy_region.srcOffset.y = p_from.y;
			image_copy_region.srcOffset.z = p_from.z;

			image_copy_region.dstSubresource.aspectMask = dst_tex->read_aspect_mask;
			image_copy_region.dstSubresource.baseArrayLayer = p_dst_layer;
			image_copy_region.dstSubresource.layerCount = 1;
			image_copy_region.dstSubresource.mipLevel = p_dst_mipmap;
			image_copy_region.dstOffset.x = p_to.x;
			image_copy_region.dstOffset.y = p_to.y;
			image_copy_region.dstOffset.z = p_to.z;

			image_copy_region.extent.width = p_size.x;
			image_copy_region.extent.height = p_size.y;
			image_copy_region.extent.depth = p_size.z;

			vkCmdCopyImage(command_buffer, src_tex->image, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, dst_tex->image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &image_copy_region);
		}

		// RESTORE LAYOUT for SRC and DST

		{ //restore src
			VkImageMemoryBarrier image_memory_barrier;
			image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
			image_memory_barrier.pNext = nullptr;
			image_memory_barrier.srcAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
			image_memory_barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_SHADER_WRITE_BIT;
			image_memory_barrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;
			image_memory_barrier.newLayout = src_tex->layout;
			image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.image = src_tex->image;
			image_memory_barrier.subresourceRange.aspectMask = src_tex->barrier_aspect_mask;
			image_memory_barrier.subresourceRange.baseMipLevel = p_src_mipmap;
			image_memory_barrier.subresourceRange.levelCount = src_tex->mipmaps;
			image_memory_barrier.subresourceRange.baseArrayLayer = p_src_layer;
			image_memory_barrier.subresourceRange.layerCount = 1;

			vkCmdPipelineBarrier(command_buffer, VK_ACCESS_TRANSFER_WRITE_BIT, VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0, 0, nullptr, 0, nullptr, 1, &image_memory_barrier);
		}

		{ //make dst readable

			VkImageMemoryBarrier image_memory_barrier;
			image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
			image_memory_barrier.pNext = nullptr;
			image_memory_barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
			image_memory_barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_SHADER_WRITE_BIT;
			image_memory_barrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
			image_memory_barrier.newLayout = dst_tex->layout;

			image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.image = dst_tex->image;
			image_memory_barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
			image_memory_barrier.subresourceRange.baseMipLevel = p_src_mipmap;
			image_memory_barrier.subresourceRange.levelCount = 1;
			image_memory_barrier.subresourceRange.baseArrayLayer = p_src_layer;
			image_memory_barrier.subresourceRange.layerCount = 1;

			vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0, 0, nullptr, 0, nullptr, 1, &image_memory_barrier);
		}
	}

	return OK;
}

Error RenderingDeviceVulkan::texture_clear(RID p_texture, const Color &p_color, uint32_t p_base_mipmap, uint32_t p_mipmaps, uint32_t p_base_layer, uint32_t p_layers, bool p_sync_with_draw) {

	_THREAD_SAFE_METHOD_

	Texture *src_tex = texture_owner.getornull(p_texture);
	ERR_FAIL_COND_V(!src_tex, ERR_INVALID_PARAMETER);

	ERR_FAIL_COND_V_MSG(p_sync_with_draw && src_tex->bound, ERR_INVALID_PARAMETER,
			"Source texture can't be cleared while a render pass that uses it is being created. Ensure render pass is finalized (and that it was created with RENDER_PASS_CONTENTS_FINISH) to unbind this texture.");

	ERR_FAIL_COND_V(p_layers == 0, ERR_INVALID_PARAMETER);
	ERR_FAIL_COND_V(p_mipmaps == 0, ERR_INVALID_PARAMETER);

	ERR_FAIL_COND_V_MSG(!(src_tex->usage_flags & TEXTURE_USAGE_CAN_COPY_TO_BIT), ERR_INVALID_PARAMETER,
			"Source texture requires the TEXTURE_USAGE_CAN_COPY_TO_BIT in order to be cleared.");

	uint32_t src_layer_count = src_tex->layers;
	if (src_tex->type == TEXTURE_TYPE_CUBE || src_tex->type == TEXTURE_TYPE_CUBE_ARRAY) {
		src_layer_count *= 6;
	}

	ERR_FAIL_COND_V(p_base_mipmap + p_mipmaps > src_tex->mipmaps, ERR_INVALID_PARAMETER);
	ERR_FAIL_COND_V(p_base_layer + p_layers > src_layer_count, ERR_INVALID_PARAMETER);

	VkCommandBuffer command_buffer = p_sync_with_draw ? frames[frame].draw_command_buffer : frames[frame].setup_command_buffer;

	VkImageLayout layout = src_tex->layout;

	if (src_tex->layout != VK_IMAGE_LAYOUT_GENERAL) { //storage may be in general state
		VkImageMemoryBarrier image_memory_barrier;
		image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
		image_memory_barrier.pNext = nullptr;
		image_memory_barrier.srcAccessMask = 0;
		image_memory_barrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
		image_memory_barrier.oldLayout = src_tex->layout;
		image_memory_barrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;

		image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		image_memory_barrier.image = src_tex->image;
		image_memory_barrier.subresourceRange.aspectMask = src_tex->read_aspect_mask;
		image_memory_barrier.subresourceRange.baseMipLevel = p_base_mipmap;
		image_memory_barrier.subresourceRange.levelCount = p_mipmaps;
		image_memory_barrier.subresourceRange.baseArrayLayer = p_base_layer;
		image_memory_barrier.subresourceRange.layerCount = p_layers;

		layout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
		vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, nullptr, 0, nullptr, 1, &image_memory_barrier);
	}

	VkClearColorValue clear_color;
	clear_color.float32[0] = p_color.r;
	clear_color.float32[1] = p_color.g;
	clear_color.float32[2] = p_color.b;
	clear_color.float32[3] = p_color.a;

	VkImageSubresourceRange range;
	range.aspectMask = src_tex->read_aspect_mask;
	range.baseArrayLayer = p_base_layer;
	range.layerCount = p_layers;
	range.baseMipLevel = p_base_mipmap;
	range.levelCount = p_mipmaps;

	vkCmdClearColorImage(command_buffer, src_tex->image, layout, &clear_color, 1, &range);

	if (src_tex->layout != VK_IMAGE_LAYOUT_GENERAL) { //storage may be in general state

		VkImageMemoryBarrier image_memory_barrier;
		image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
		image_memory_barrier.pNext = nullptr;
		image_memory_barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
		image_memory_barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
		image_memory_barrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
		image_memory_barrier.newLayout = src_tex->layout;

		image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		image_memory_barrier.image = src_tex->image;
		image_memory_barrier.subresourceRange.aspectMask = src_tex->read_aspect_mask;
		image_memory_barrier.subresourceRange.baseMipLevel = p_base_mipmap;
		image_memory_barrier.subresourceRange.levelCount = p_mipmaps;
		image_memory_barrier.subresourceRange.baseArrayLayer = p_base_layer;
		image_memory_barrier.subresourceRange.layerCount = p_layers;

		vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0, 0, nullptr, 0, nullptr, 1, &image_memory_barrier);
	}

	return OK;
}

bool RenderingDeviceVulkan::texture_is_format_supported_for_usage(DataFormat p_format, uint32_t p_usage) const {
	ERR_FAIL_INDEX_V(p_format, DATA_FORMAT_MAX, false);

	_THREAD_SAFE_METHOD_

	//validate that this image is supported for the intended use
	VkFormatProperties properties;
	vkGetPhysicalDeviceFormatProperties(context->get_physical_device(), vulkan_formats[p_format], &properties);
	VkFormatFeatureFlags flags;

	if (p_usage & TEXTURE_USAGE_CPU_READ_BIT) {
		flags = properties.linearTilingFeatures;
	} else {
		flags = properties.optimalTilingFeatures;
	}

	if (p_usage & TEXTURE_USAGE_SAMPLING_BIT && !(flags & VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT)) {
		return false;
	}

	if (p_usage & TEXTURE_USAGE_COLOR_ATTACHMENT_BIT && !(flags & VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BIT)) {
		return false;
	}

	if (p_usage & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT && !(flags & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT)) {
		return false;
	}

	if (p_usage & TEXTURE_USAGE_STORAGE_BIT && !(flags & VK_FORMAT_FEATURE_STORAGE_IMAGE_BIT)) {
		return false;
	}

	if (p_usage & TEXTURE_USAGE_STORAGE_ATOMIC_BIT && !(flags & VK_FORMAT_FEATURE_STORAGE_IMAGE_ATOMIC_BIT)) {
		return false;
	}

	return true;
}

/********************/
/**** ATTACHMENT ****/
/********************/

VkRenderPass RenderingDeviceVulkan::_render_pass_create(const Vector<AttachmentFormat> &p_format, InitialAction p_initial_color_action, FinalAction p_final_color_action, InitialAction p_initial_depth_action, FinalAction p_final_depth_action, int *r_color_attachment_count) {

	Vector<VkAttachmentDescription> attachments;
	Vector<VkAttachmentReference> color_references;
	Vector<VkAttachmentReference> depth_stencil_references;
	Vector<VkAttachmentReference> resolve_references;

	for (int i = 0; i < p_format.size(); i++) {

		VkAttachmentDescription description;

		description.flags = 0;
		ERR_FAIL_INDEX_V(p_format[i].format, DATA_FORMAT_MAX, VK_NULL_HANDLE);
		description.format = vulkan_formats[p_format[i].format];
		ERR_FAIL_INDEX_V(p_format[i].samples, TEXTURE_SAMPLES_MAX, VK_NULL_HANDLE);
		description.samples = rasterization_sample_count[p_format[i].samples];
		//anything below does not really matter, as vulkan just ignores it when creating a pipeline
		ERR_FAIL_COND_V_MSG(!(p_format[i].usage_flags & (TEXTURE_USAGE_COLOR_ATTACHMENT_BIT | TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT | TEXTURE_USAGE_RESOLVE_ATTACHMENT_BIT)), VK_NULL_HANDLE,
				"Texture format for index (" + itos(i) + ") requires an attachment (depth, stencil or resolve) bit set.");

		bool is_depth_stencil = p_format[i].usage_flags & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
		bool is_sampled = p_format[i].usage_flags & TEXTURE_USAGE_SAMPLING_BIT;
		bool is_storage = p_format[i].usage_flags & TEXTURE_USAGE_STORAGE_BIT;

		switch (is_depth_stencil ? p_initial_depth_action : p_initial_color_action) {

			case INITIAL_ACTION_CLEAR: {
				description.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
				description.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
				description.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; //don't care what is there
			} break;
			case INITIAL_ACTION_KEEP: {
				if (p_format[i].usage_flags & TEXTURE_USAGE_COLOR_ATTACHMENT_BIT) {
					description.loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
					description.initialLayout = is_sampled ? VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL : (is_storage ? VK_IMAGE_LAYOUT_GENERAL : VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL);
					description.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
				} else if (p_format[i].usage_flags & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) {
					description.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
					description.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; //don't care what is there
					description.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
				} else {
					description.loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
					description.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
					description.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; //don't care what is there
				}
			} break;
			case INITIAL_ACTION_CONTINUE: {
				if (p_format[i].usage_flags & TEXTURE_USAGE_COLOR_ATTACHMENT_BIT) {
					description.loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
					description.initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
					description.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
				} else if (p_format[i].usage_flags & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) {
					description.loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
					description.initialLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL; //don't care what is there
					description.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
				} else {
					description.loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
					description.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
					description.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; //don't care what is there
				}
			} break;
			default: {
				ERR_FAIL_V(VK_NULL_HANDLE); //should never reach here
			}
		}

		switch (is_depth_stencil ? p_final_depth_action : p_final_color_action) {
			case FINAL_ACTION_READ: {

				if (p_format[i].usage_flags & TEXTURE_USAGE_COLOR_ATTACHMENT_BIT) {
					description.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
					description.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
					description.finalLayout = is_sampled ? VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL : (is_storage ? VK_IMAGE_LAYOUT_GENERAL : VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL);
				} else if (p_format[i].usage_flags & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) {

					description.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
					description.stencilStoreOp = VK_ATTACHMENT_STORE_OP_STORE;
					description.finalLayout = is_sampled ? VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL : (is_storage ? VK_IMAGE_LAYOUT_GENERAL : VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
				} else {
					description.loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
					description.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
					description.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; //don't care what is there
				}
			} break;
			case FINAL_ACTION_DISCARD: {
				if (p_format[i].usage_flags & TEXTURE_USAGE_COLOR_ATTACHMENT_BIT) {
					description.storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
					description.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
					description.finalLayout = is_sampled ? VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL : (is_storage ? VK_IMAGE_LAYOUT_GENERAL : VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL);
				} else if (p_format[i].usage_flags & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) {

					description.storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
					description.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
					description.finalLayout = is_sampled ? VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL : (is_storage ? VK_IMAGE_LAYOUT_GENERAL : VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
				} else {
					description.loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
					description.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
					description.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; //don't care what is there
				}
			} break;
			case FINAL_ACTION_CONTINUE: {
				if (p_format[i].usage_flags & TEXTURE_USAGE_COLOR_ATTACHMENT_BIT) {
					description.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
					description.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
					description.finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
				} else if (p_format[i].usage_flags & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) {

					description.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
					description.stencilStoreOp = VK_ATTACHMENT_STORE_OP_STORE;
					description.finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
				} else {
					description.loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
					description.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
					description.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; //don't care what is there
				}

			} break;
			default: {
				ERR_FAIL_V(VK_NULL_HANDLE); //should never reach here
			}
		}

		attachments.push_back(description);

		VkAttachmentReference reference;
		reference.attachment = i;

		if (p_format[i].usage_flags & TEXTURE_USAGE_COLOR_ATTACHMENT_BIT) {
			reference.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
			color_references.push_back(reference);
		} else if (p_format[i].usage_flags & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) {
			reference.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
			depth_stencil_references.push_back(reference);
		} else if (p_format[i].usage_flags & TEXTURE_USAGE_RESOLVE_ATTACHMENT_BIT) {
			reference.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
			resolve_references.push_back(reference);
		} else {
			ERR_FAIL_V_MSG(VK_NULL_HANDLE, "Texture index " + itos(i) + " is neither color, depth stencil or resolve so it can't be used as attachment.");
		}
	}

	ERR_FAIL_COND_V_MSG(depth_stencil_references.size() > 1, VK_NULL_HANDLE,
			"Formats can only have one depth/stencil attachment, supplied (" + itos(depth_stencil_references.size()) + ").");

	ERR_FAIL_COND_V_MSG(resolve_references.size() > 1, VK_NULL_HANDLE,
			"Formats can only have one resolve attachment, supplied (" + itos(resolve_references.size()) + ").");

	VkSubpassDescription subpass;
	subpass.flags = 0;
	subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
	subpass.inputAttachmentCount = 0; //unsupported for now
	subpass.pInputAttachments = nullptr;
	subpass.colorAttachmentCount = color_references.size();
	subpass.pColorAttachments = color_references.ptr();
	subpass.pDepthStencilAttachment = depth_stencil_references.ptr();
	subpass.pResolveAttachments = resolve_references.ptr();
	subpass.preserveAttachmentCount = 0;
	subpass.pPreserveAttachments = nullptr;

	VkRenderPassCreateInfo render_pass_create_info;
	render_pass_create_info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
	render_pass_create_info.pNext = nullptr;
	render_pass_create_info.flags = 0;
	render_pass_create_info.attachmentCount = attachments.size();
	render_pass_create_info.pAttachments = attachments.ptr();
	render_pass_create_info.subpassCount = 1;
	render_pass_create_info.pSubpasses = &subpass;
	render_pass_create_info.dependencyCount = 0;
	render_pass_create_info.pDependencies = nullptr;

	VkRenderPass render_pass;
	VkResult res = vkCreateRenderPass(device, &render_pass_create_info, nullptr, &render_pass);
	ERR_FAIL_COND_V_MSG(res, VK_NULL_HANDLE, "vkCreateRenderPass failed with error " + itos(res) + ".");

	if (r_color_attachment_count) {
		*r_color_attachment_count = color_references.size();
	}
	return render_pass;
}

RenderingDevice::FramebufferFormatID RenderingDeviceVulkan::framebuffer_format_create(const Vector<AttachmentFormat> &p_format) {

	_THREAD_SAFE_METHOD_

	FramebufferFormatKey key;
	key.attachments = p_format;

	const Map<FramebufferFormatKey, FramebufferFormatID>::Element *E = framebuffer_format_cache.find(key);
	if (E) {
		//exists, return
		return E->get();
	}

	int color_references;
	VkRenderPass render_pass = _render_pass_create(p_format, INITIAL_ACTION_CLEAR, FINAL_ACTION_DISCARD, INITIAL_ACTION_CLEAR, FINAL_ACTION_DISCARD, &color_references); //actions don't matter for this use case

	if (render_pass == VK_NULL_HANDLE) { //was likely invalid
		return INVALID_ID;
	}
	FramebufferFormatID id = FramebufferFormatID(framebuffer_format_cache.size()) | (FramebufferFormatID(ID_TYPE_FRAMEBUFFER_FORMAT) << FramebufferFormatID(ID_BASE_SHIFT));

	E = framebuffer_format_cache.insert(key, id);
	FramebufferFormat fb_format;
	fb_format.E = E;
	fb_format.color_attachments = color_references;
	fb_format.render_pass = render_pass;
	fb_format.samples = p_format[0].samples;
	framebuffer_formats[id] = fb_format;
	return id;
}

RenderingDevice::TextureSamples RenderingDeviceVulkan::framebuffer_format_get_texture_samples(FramebufferFormatID p_format) {
	Map<FramebufferFormatID, FramebufferFormat>::Element *E = framebuffer_formats.find(p_format);
	ERR_FAIL_COND_V(!E, TEXTURE_SAMPLES_1);

	return E->get().samples;
}

/***********************/
/**** RENDER TARGET ****/
/***********************/

RID RenderingDeviceVulkan::framebuffer_create(const Vector<RID> &p_texture_attachments, FramebufferFormatID p_format_check) {

	_THREAD_SAFE_METHOD_

	Vector<AttachmentFormat> attachments;
	Size2i size;

	for (int i = 0; i < p_texture_attachments.size(); i++) {
		Texture *texture = texture_owner.getornull(p_texture_attachments[i]);
		ERR_FAIL_COND_V_MSG(!texture, RID(), "Texture index supplied for framebuffer (" + itos(i) + ") is not a valid texture.");

		if (i == 0) {
			size.width = texture->width;
			size.height = texture->height;
		} else {
			ERR_FAIL_COND_V_MSG((uint32_t)size.width != texture->width || (uint32_t)size.height != texture->height, RID(),
					"All textures in a framebuffer should be the same size.");
		}

		AttachmentFormat af;
		af.format = texture->format;
		af.samples = texture->samples;
		af.usage_flags = texture->usage_flags;
		attachments.push_back(af);
	}

	FramebufferFormatID format_id = framebuffer_format_create(attachments);
	if (format_id == INVALID_ID) {
		return RID();
	}

	ERR_FAIL_COND_V_MSG(p_format_check != INVALID_ID && format_id != p_format_check, RID(),
			"The format used to check this framebuffer differs from the intended framebuffer format.");

	Framebuffer framebuffer;
	framebuffer.format_id = format_id;
	framebuffer.texture_ids = p_texture_attachments;
	framebuffer.size = size;

	RID id = framebuffer_owner.make_rid(framebuffer);

	for (int i = 0; i < p_texture_attachments.size(); i++) {
		_add_dependency(id, p_texture_attachments[i]);
	}

	return id;
}

RenderingDevice::FramebufferFormatID RenderingDeviceVulkan::framebuffer_get_format(RID p_framebuffer) {

	_THREAD_SAFE_METHOD_

	Framebuffer *framebuffer = framebuffer_owner.getornull(p_framebuffer);
	ERR_FAIL_COND_V(!framebuffer, INVALID_ID);

	return framebuffer->format_id;
}

/*****************/
/**** SAMPLER ****/
/*****************/

RID RenderingDeviceVulkan::sampler_create(const SamplerState &p_state) {

	_THREAD_SAFE_METHOD_

	VkSamplerCreateInfo sampler_create_info;
	sampler_create_info.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
	sampler_create_info.pNext = nullptr;
	sampler_create_info.flags = 0;
	sampler_create_info.magFilter = p_state.mag_filter == SAMPLER_FILTER_LINEAR ? VK_FILTER_LINEAR : VK_FILTER_NEAREST;
	sampler_create_info.minFilter = p_state.min_filter == SAMPLER_FILTER_LINEAR ? VK_FILTER_LINEAR : VK_FILTER_NEAREST;
	sampler_create_info.mipmapMode = p_state.mip_filter == SAMPLER_FILTER_LINEAR ? VK_SAMPLER_MIPMAP_MODE_LINEAR : VK_SAMPLER_MIPMAP_MODE_NEAREST;

	ERR_FAIL_INDEX_V(p_state.repeat_u, SAMPLER_REPEAT_MODE_MAX, RID());
	sampler_create_info.addressModeU = address_modes[p_state.repeat_u];
	ERR_FAIL_INDEX_V(p_state.repeat_v, SAMPLER_REPEAT_MODE_MAX, RID());
	sampler_create_info.addressModeV = address_modes[p_state.repeat_v];
	ERR_FAIL_INDEX_V(p_state.repeat_w, SAMPLER_REPEAT_MODE_MAX, RID());
	sampler_create_info.addressModeW = address_modes[p_state.repeat_w];

	sampler_create_info.mipLodBias = p_state.lod_bias;
	sampler_create_info.anisotropyEnable = p_state.use_anisotropy;
	sampler_create_info.maxAnisotropy = p_state.anisotropy_max;
	sampler_create_info.compareEnable = p_state.enable_compare;

	ERR_FAIL_INDEX_V(p_state.compare_op, COMPARE_OP_MAX, RID());
	sampler_create_info.compareOp = compare_operators[p_state.compare_op];

	sampler_create_info.minLod = p_state.min_lod;
	sampler_create_info.maxLod = p_state.max_lod;

	ERR_FAIL_INDEX_V(p_state.border_color, SAMPLER_BORDER_COLOR_MAX, RID());
	sampler_create_info.borderColor = sampler_border_colors[p_state.border_color];

	sampler_create_info.unnormalizedCoordinates = p_state.unnormalized_uvw;

	VkSampler sampler;
	VkResult res = vkCreateSampler(device, &sampler_create_info, nullptr, &sampler);
	ERR_FAIL_COND_V_MSG(res, RID(), "vkCreateSampler failed with error " + itos(res) + ".");

	return sampler_owner.make_rid(sampler);
}

/**********************/
/**** VERTEX ARRAY ****/
/**********************/

RID RenderingDeviceVulkan::vertex_buffer_create(uint32_t p_size_bytes, const Vector<uint8_t> &p_data) {

	_THREAD_SAFE_METHOD_

	ERR_FAIL_COND_V(p_data.size() && (uint32_t)p_data.size() != p_size_bytes, RID());

	Buffer buffer;
	_buffer_allocate(&buffer, p_size_bytes, VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT, VMA_MEMORY_USAGE_GPU_ONLY);
	if (p_data.size()) {
		uint64_t data_size = p_data.size();
		const uint8_t *r = p_data.ptr();
		_buffer_update(&buffer, 0, r, data_size);
		_buffer_memory_barrier(buffer.buffer, 0, data_size, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_VERTEX_INPUT_BIT, VK_ACCESS_TRANSFER_WRITE_BIT, VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT, false);
	}

	return vertex_buffer_owner.make_rid(buffer);
}

// Internally reference counted, this ID is warranted to be unique for the same description, but needs to be freed as many times as it was allocated
RenderingDevice::VertexFormatID RenderingDeviceVulkan::vertex_format_create(const Vector<VertexDescription> &p_vertex_formats) {

	_THREAD_SAFE_METHOD_

	VertexDescriptionKey key;
	key.vertex_formats = p_vertex_formats;

	VertexFormatID *idptr = vertex_format_cache.getptr(key);
	if (idptr) {
		return *idptr;
	}

	//does not exist, create one and cache it
	VertexDescriptionCache vdcache;
	vdcache.bindings = memnew_arr(VkVertexInputBindingDescription, p_vertex_formats.size());
	vdcache.attributes = memnew_arr(VkVertexInputAttributeDescription, p_vertex_formats.size());

	Set<int> used_locations;
	for (int i = 0; i < p_vertex_formats.size(); i++) {
		ERR_CONTINUE(p_vertex_formats[i].format >= DATA_FORMAT_MAX);
		ERR_FAIL_COND_V(used_locations.has(p_vertex_formats[i].location), INVALID_ID);

		ERR_FAIL_COND_V_MSG(get_format_vertex_size(p_vertex_formats[i].format) == 0, INVALID_ID,
				"Data format for attachment (" + itos(i) + ") is not valid for a vertex array.");

		vdcache.bindings[i].binding = i;
		vdcache.bindings[i].stride = p_vertex_formats[i].stride;
		vdcache.bindings[i].inputRate = p_vertex_formats[i].frequency == VERTEX_FREQUENCY_INSTANCE ? VK_VERTEX_INPUT_RATE_INSTANCE : VK_VERTEX_INPUT_RATE_VERTEX;
		vdcache.attributes[i].binding = i;
		vdcache.attributes[i].location = p_vertex_formats[i].location;
		vdcache.attributes[i].format = vulkan_formats[p_vertex_formats[i].format];
		vdcache.attributes[i].offset = p_vertex_formats[i].offset;
		used_locations.insert(p_vertex_formats[i].location);
	}

	vdcache.create_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
	vdcache.create_info.pNext = nullptr;
	vdcache.create_info.flags = 0;

	vdcache.create_info.vertexAttributeDescriptionCount = p_vertex_formats.size();
	vdcache.create_info.pVertexAttributeDescriptions = vdcache.attributes;

	vdcache.create_info.vertexBindingDescriptionCount = p_vertex_formats.size();
	vdcache.create_info.pVertexBindingDescriptions = vdcache.bindings;
	vdcache.vertex_formats = p_vertex_formats;

	VertexFormatID id = VertexFormatID(vertex_format_cache.size()) | (VertexFormatID(ID_TYPE_VERTEX_FORMAT) << ID_BASE_SHIFT);
	vertex_format_cache[key] = id;
	vertex_formats[id] = vdcache;
	return id;
}

RID RenderingDeviceVulkan::vertex_array_create(uint32_t p_vertex_count, VertexFormatID p_vertex_format, const Vector<RID> &p_src_buffers) {

	_THREAD_SAFE_METHOD_

	ERR_FAIL_COND_V(!vertex_formats.has(p_vertex_format), RID());
	const VertexDescriptionCache &vd = vertex_formats[p_vertex_format];

	ERR_FAIL_COND_V(vd.vertex_formats.size() != p_src_buffers.size(), RID());

	for (int i = 0; i < p_src_buffers.size(); i++) {
		ERR_FAIL_COND_V(!vertex_buffer_owner.owns(p_src_buffers[i]), RID());
	}

	VertexArray vertex_array;

	vertex_array.vertex_count = p_vertex_count;
	vertex_array.description = p_vertex_format;
	vertex_array.max_instances_allowed = 0xFFFFFFFF; //by default as many as you want
	for (int i = 0; i < p_src_buffers.size(); i++) {
		Buffer *buffer = vertex_buffer_owner.getornull(p_src_buffers[i]);

		//validate with buffer
		{
			const VertexDescription &atf = vd.vertex_formats[i];

			uint32_t element_size = get_format_vertex_size(atf.format);
			ERR_FAIL_COND_V(element_size == 0, RID()); //should never happens since this was prevalidated

			if (atf.frequency == VERTEX_FREQUENCY_VERTEX) {
				//validate size for regular drawing
				uint64_t total_size = uint64_t(atf.stride) * (p_vertex_count - 1) + atf.offset + element_size;
				ERR_FAIL_COND_V_MSG(total_size > buffer->size, RID(),
						"Attachment (" + itos(i) + ") will read past the end of the buffer.");

			} else {
				//validate size for instances drawing
				uint64_t available = buffer->size - atf.offset;
				ERR_FAIL_COND_V_MSG(available < element_size, RID(),
						"Attachment (" + itos(i) + ") uses instancing, but it's just too small.");

				uint32_t instances_allowed = available / atf.stride;
				vertex_array.max_instances_allowed = MIN(instances_allowed, vertex_array.max_instances_allowed);
			}
		}

		vertex_array.buffers.push_back(buffer->buffer);
		vertex_array.offsets.push_back(0); //offset unused, but passing anyway
	}

	RID id = vertex_array_owner.make_rid(vertex_array);
	for (int i = 0; i < p_src_buffers.size(); i++) {
		_add_dependency(id, p_src_buffers[i]);
	}

	return id;
}

RID RenderingDeviceVulkan::index_buffer_create(uint32_t p_index_count, IndexBufferFormat p_format, const Vector<uint8_t> &p_data, bool p_use_restart_indices) {

	_THREAD_SAFE_METHOD_

	ERR_FAIL_COND_V(p_index_count == 0, RID());

	IndexBuffer index_buffer;
	index_buffer.index_type = (p_format == INDEX_BUFFER_FORMAT_UINT16) ? VK_INDEX_TYPE_UINT16 : VK_INDEX_TYPE_UINT32;
	index_buffer.supports_restart_indices = p_use_restart_indices;
	index_buffer.index_count = p_index_count;
	uint32_t size_bytes = p_index_count * ((p_format == INDEX_BUFFER_FORMAT_UINT16) ? 2 : 4);
#ifdef DEBUG_ENABLED
	if (p_data.size()) {
		index_buffer.max_index = 0;
		ERR_FAIL_COND_V_MSG((uint32_t)p_data.size() != size_bytes, RID(),
				"Default index buffer initializer array size (" + itos(p_data.size()) + ") does not match format required size (" + itos(size_bytes) + ").");
		const uint8_t *r = p_data.ptr();
		if (p_format == INDEX_BUFFER_FORMAT_UINT16) {
			const uint16_t *index16 = (const uint16_t *)r;
			for (uint32_t i = 0; i < p_index_count; i++) {
				if (p_use_restart_indices && index16[i] == 0xFFFF) {
					continue; //restart index, ingnore
				}
				index_buffer.max_index = MAX(index16[i], index_buffer.max_index);
			}
		} else {
			const uint32_t *index32 = (const uint32_t *)r;
			for (uint32_t i = 0; i < p_index_count; i++) {
				if (p_use_restart_indices && index32[i] == 0xFFFFFFFF) {
					continue; //restart index, ingnore
				}
				index_buffer.max_index = MAX(index32[i], index_buffer.max_index);
			}
		}
	} else {
		index_buffer.max_index = 0xFFFFFFFF;
	}
#else
	index_buffer.max_index = 0xFFFFFFFF;
#endif
	_buffer_allocate(&index_buffer, size_bytes, VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_INDEX_BUFFER_BIT, VMA_MEMORY_USAGE_GPU_ONLY);
	if (p_data.size()) {
		uint64_t data_size = p_data.size();
		const uint8_t *r = p_data.ptr();
		_buffer_update(&index_buffer, 0, r, data_size);
		_buffer_memory_barrier(index_buffer.buffer, 0, data_size, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_VERTEX_INPUT_BIT, VK_ACCESS_TRANSFER_WRITE_BIT, VK_ACCESS_INDEX_READ_BIT, false);
	}
	return index_buffer_owner.make_rid(index_buffer);
}

RID RenderingDeviceVulkan::index_array_create(RID p_index_buffer, uint32_t p_index_offset, uint32_t p_index_count) {

	_THREAD_SAFE_METHOD_

	ERR_FAIL_COND_V(!index_buffer_owner.owns(p_index_buffer), RID());

	IndexBuffer *index_buffer = index_buffer_owner.getornull(p_index_buffer);

	ERR_FAIL_COND_V(p_index_count == 0, RID());
	ERR_FAIL_COND_V(p_index_offset + p_index_count > index_buffer->index_count, RID());

	IndexArray index_array;
	index_array.max_index = index_buffer->max_index;
	index_array.buffer = index_buffer->buffer;
	index_array.offset = p_index_offset;
	index_array.indices = p_index_count;
	index_array.index_type = index_buffer->index_type;
	index_array.supports_restart_indices = index_buffer->supports_restart_indices;

	RID id = index_array_owner.make_rid(index_array);
	_add_dependency(id, p_index_buffer);
	return id;
}

/****************/
/**** SHADER ****/
/****************/

static const char *shader_stage_names[RenderingDevice::SHADER_STAGE_MAX] = {
	"Vertex",
	"Fragment",
	"TesselationControl",
	"TesselationEvaluation",
	"Compute"
};

static const char *shader_uniform_names[RenderingDevice::UNIFORM_TYPE_MAX] = {
	"Sampler", "CombinedSampler", "Texture", "Image", "TextureBuffer", "SamplerTextureBuffer", "ImageBuffer", "UniformBuffer", "StorageBuffer", "InputAttachment"
};

static VkShaderStageFlagBits shader_stage_masks[RenderingDevice::SHADER_STAGE_MAX] = {
	VK_SHADER_STAGE_VERTEX_BIT,
	VK_SHADER_STAGE_FRAGMENT_BIT,
	VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT,
	VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT,
	VK_SHADER_STAGE_COMPUTE_BIT,
};

String RenderingDeviceVulkan::_shader_uniform_debug(RID p_shader, int p_set) {
	String ret;
	const Shader *shader = shader_owner.getornull(p_shader);
	ERR_FAIL_COND_V(!shader, String());
	for (int i = 0; i < shader->sets.size(); i++) {
		if (p_set >= 0 && i != p_set) {
			continue;
		}
		for (int j = 0; j < shader->sets[i].uniform_info.size(); j++) {
			const UniformInfo &ui = shader->sets[i].uniform_info[j];
			if (ret != String()) {
				ret += "\n";
			}
			ret += "Set: " + itos(i) + " Binding: " + itos(ui.binding) + " Type: " + shader_uniform_names[ui.type] + " Length: " + itos(ui.length);
		}
	}
	return ret;
}
#if 0
bool RenderingDeviceVulkan::_uniform_add_binding(Vector<Vector<VkDescriptorSetLayoutBinding> > &bindings, Vector<Vector<UniformInfo> > &uniform_infos, const glslang::TObjectReflection &reflection, RenderingDevice::ShaderStage p_stage, Shader::PushConstant &push_constant, String *r_error) {

	VkDescriptorSetLayoutBinding layout_binding;
	UniformInfo info;

	switch (reflection.getType()->getBasicType()) {
		case glslang::EbtSampler: {

			//print_line("DEBUG: IsSampler");
			if (reflection.getType()->getSampler().dim == glslang::EsdBuffer) {
				//texture buffers
				if (reflection.getType()->getSampler().isCombined()) {
					layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER;
					info.type = UNIFORM_TYPE_SAMPLER_WITH_TEXTURE_BUFFER;
					//print_line("DEBUG: SAMPLER: texel combined");
				} else if (reflection.getType()->getSampler().isTexture()) {
					layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER;
					info.type = UNIFORM_TYPE_TEXTURE_BUFFER;
					//print_line("DEBUG: SAMPLER: texel alone");
				} else if (reflection.getType()->getSampler().isImage()) {
					layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER;
					info.type = UNIFORM_TYPE_IMAGE_BUFFER;
					//print_line("DEBUG: SAMPLER: texel buffer");
				} else {
					if (r_error) {
						*r_error = "On shader stage '" + String(shader_stage_names[p_stage]) + "', uniform '" + reflection.name.c_str() + "' is of unsupported buffer type.";
					}
					return false;
				}
			} else if (reflection.getType()->getSampler().isCombined()) {
				layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
				info.type = UNIFORM_TYPE_SAMPLER_WITH_TEXTURE;
				//print_line("DEBUG: SAMPLER: combined");
			} else if (reflection.getType()->getSampler().isPureSampler()) {
				layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_SAMPLER;
				info.type = UNIFORM_TYPE_SAMPLER;
				//print_line("DEBUG: SAMPLER: sampler");
			} else if (reflection.getType()->getSampler().isTexture()) {
				layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE;
				info.type = UNIFORM_TYPE_TEXTURE;
				//print_line("DEBUG: SAMPLER: image");
			} else if (reflection.getType()->getSampler().isImage()) {
				layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE;
				info.type = UNIFORM_TYPE_IMAGE;
				//print_line("DEBUG: SAMPLER: storage image");
			} else {
				//print_line("DEBUG: sampler unknown");
				if (r_error) {
					*r_error = "On shader stage '" + String(shader_stage_names[p_stage]) + "', uniform '" + reflection.name.c_str() + "' is of unsupported sampler type.";
				}
				return false;
			}

			if (reflection.getType()->isArray()) {
				layout_binding.descriptorCount = reflection.getType()->getArraySizes()->getCumulativeSize();
				//print_line("DEBUG: array of size: " + itos(layout_binding.descriptorCount));
			} else {
				layout_binding.descriptorCount = 1;
			}

			info.length = layout_binding.descriptorCount;

		} break;
		/*case glslang::EbtStruct: {
			print_line("DEBUG: Struct");

		} break;*/
		case glslang::EbtBlock: {
			//print_line("DEBUG: Block");
			if (reflection.getType()->getQualifier().storage == glslang::EvqUniform) {
				if (reflection.getType()->getQualifier().layoutPushConstant) {
					uint32_t len = reflection.size;
					if (push_constant.push_constant_size != 0 && push_constant.push_constant_size != len) {
						*r_error = "On shader stage '" + String(shader_stage_names[p_stage]) + "', uniform '" + reflection.name.c_str() + "' push constants for different stages should all be the same size.";
						return false;
					}
					push_constant.push_constant_size = len;
					push_constant.push_constants_vk_stage |= shader_stage_masks[p_stage];
					return true;
				}
				//print_line("DEBUG: Uniform buffer");
				layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
				info.type = UNIFORM_TYPE_UNIFORM_BUFFER;
			} else if (reflection.getType()->getQualifier().storage == glslang::EvqBuffer) {
				layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER;
				info.type = UNIFORM_TYPE_STORAGE_BUFFER;
				//print_line("DEBUG: Storage buffer");
			} else {
				if (r_error) {
					*r_error = "On shader stage '" + String(shader_stage_names[p_stage]) + "', uniform '" + reflection.name.c_str() + "' is of unsupported block type: (" + itos(reflection.getType()->getQualifier().storage) + ").";
				}
				return false;
			}

			if (reflection.getType()->isArray()) {
				layout_binding.descriptorCount = reflection.getType()->getArraySizes()->getCumulativeSize();
				//print_line("DEBUG: array of size: " + itos(layout_binding.descriptorCount));
			} else {
				layout_binding.descriptorCount = 1;
			}

			info.length = reflection.size;

		} break;
		/*case glslang::EbtReference: {

		} break;*/
		/*case glslang::EbtAtomicUint: {

		} break;*/
		default: {

			if (reflection.getType()->getQualifier().hasOffset() || reflection.name.find(".") != std::string::npos) {
				//member of uniform block?
				return true;
			}

			if (r_error) {
				*r_error = "On shader stage '" + String(shader_stage_names[p_stage]) + "', uniform '" + reflection.name.c_str() + "' unsupported uniform type.";
			}
			return false;
		}
	}

	if (!reflection.getType()->getQualifier().hasBinding()) {
		if (r_error) {
			*r_error = "On shader stage '" + String(shader_stage_names[p_stage]) + "', uniform '" + reflection.name.c_str() + "' lacks a binding number.";
		}
		return false;
	}

	uint32_t set = reflection.getType()->getQualifier().hasSet() ? reflection.getType()->getQualifier().layoutSet : 0;

	if (set >= MAX_UNIFORM_SETS) {
		if (r_error) {
			*r_error = "On shader stage '" + String(shader_stage_names[p_stage]) + "', uniform '" + reflection.name.c_str() + "' uses a set (" + itos(set) + ") index larger than what is supported (" + itos(MAX_UNIFORM_SETS) + ").";
		}
		return false;
	}

	if (set >= limits.maxBoundDescriptorSets) {
		if (r_error) {
			*r_error = "On shader stage '" + String(shader_stage_names[p_stage]) + "', uniform '" + reflection.name.c_str() + "' uses a set (" + itos(set) + ") index larger than what is supported by the hardware (" + itos(limits.maxBoundDescriptorSets) + ").";
		}
		return false;
	}

	uint32_t binding = reflection.getType()->getQualifier().layoutBinding;

	if (set < (uint32_t)bindings.size()) {
		//check if this already exists
		for (int i = 0; i < bindings[set].size(); i++) {
			if (bindings[set][i].binding == binding) {
				//already exists, verify that it's the same type
				if (bindings[set][i].descriptorType != layout_binding.descriptorType) {
					if (r_error) {
						*r_error = "On shader stage '" + String(shader_stage_names[p_stage]) + "', uniform '" + reflection.name.c_str() + "' trying to re-use location for set=" + itos(set) + ", binding=" + itos(binding) + " with different uniform type.";
					}
					return false;
				}

				//also, verify that it's the same size
				if (bindings[set][i].descriptorCount != layout_binding.descriptorCount || uniform_infos[set][i].length != info.length) {
					if (r_error) {
						*r_error = "On shader stage '" + String(shader_stage_names[p_stage]) + "', uniform '" + reflection.name.c_str() + "' trying to re-use location for set=" + itos(set) + ", binding=" + itos(binding) + " with different uniform size.";
					}
					return false;
				}

				//just append stage mask and return
				bindings.write[set].write[i].stageFlags |= shader_stage_masks[p_stage];
				uniform_infos.write[set].write[i].stages |= 1 << p_stage;
				return true;
			}
		}
	}
	layout_binding.binding = binding;
	layout_binding.stageFlags = shader_stage_masks[p_stage];
	layout_binding.pImmutableSamplers = nullptr; //no support for this yet

	info.stages = 1 << p_stage;
	info.binding = binding;

	if (set >= (uint32_t)bindings.size()) {
		bindings.resize(set + 1);
		uniform_infos.resize(set + 1);
	}
#if 0
	print_line("stage: " + String(shader_stage_names[p_stage]) + " set: " + itos(set) + " binding: " + itos(info.binding) + " type:" + shader_uniform_names[info.type] + " length: " + itos(info.length));
#endif
	bindings.write[set].push_back(layout_binding);
	uniform_infos.write[set].push_back(info);

	return true;
}
#endif

RID RenderingDeviceVulkan::shader_create(const Vector<ShaderStageData> &p_stages) {

	//descriptor layouts
	Vector<Vector<VkDescriptorSetLayoutBinding>> set_bindings;
	Vector<Vector<UniformInfo>> uniform_info;
	Shader::PushConstant push_constant;
	push_constant.push_constant_size = 0;
	push_constant.push_constants_vk_stage = 0;

	uint32_t vertex_input_mask = 0;

	uint32_t fragment_outputs = 0;

	uint32_t stages_processed = 0;

	bool is_compute = false;

	for (int i = 0; i < p_stages.size(); i++) {

		if (p_stages[i].shader_stage == SHADER_STAGE_COMPUTE) {
			is_compute = true;
			ERR_FAIL_COND_V_MSG(p_stages.size() != 1, RID(),
					"Compute shaders can only receive one stage, dedicated to compute.");
		}
		ERR_FAIL_COND_V_MSG(stages_processed & (1 << p_stages[i].shader_stage), RID(),
				"Stage " + String(shader_stage_names[p_stages[i].shader_stage]) + " submitted more than once.");

		{
			SpvReflectShaderModule module;
			const uint8_t *spirv = p_stages[i].spir_v.ptr();
			SpvReflectResult result = spvReflectCreateShaderModule(p_stages[i].spir_v.size(), spirv, &module);
			ERR_FAIL_COND_V_MSG(result != SPV_REFLECT_RESULT_SUCCESS, RID(),
					"Reflection of SPIR-V shader stage '" + String(shader_stage_names[p_stages[i].shader_stage]) + "' failed parsing shader.");

			uint32_t binding_count = 0;
			result = spvReflectEnumerateDescriptorBindings(&module, &binding_count, nullptr);
			ERR_FAIL_COND_V_MSG(result != SPV_REFLECT_RESULT_SUCCESS, RID(),
					"Reflection of SPIR-V shader stage '" + String(shader_stage_names[p_stages[i].shader_stage]) + "' failed enumerating descriptor bindings.");

			uint32_t stage = p_stages[i].shader_stage;

			if (binding_count > 0) {

				//Parse bindings

				Vector<SpvReflectDescriptorBinding *> bindings;
				bindings.resize(binding_count);
				result = spvReflectEnumerateDescriptorBindings(&module, &binding_count, bindings.ptrw());

				ERR_FAIL_COND_V_MSG(result != SPV_REFLECT_RESULT_SUCCESS, RID(),
						"Reflection of SPIR-V shader stage '" + String(shader_stage_names[p_stages[i].shader_stage]) + "' failed getting descriptor bindings.");

				for (uint32_t j = 0; j < binding_count; j++) {
					const SpvReflectDescriptorBinding &binding = *bindings[j];

					VkDescriptorSetLayoutBinding layout_binding;
					UniformInfo info;

					bool need_array_dimensions = false;
					bool need_block_size = false;

					switch (binding.descriptor_type) {
						case SPV_REFLECT_DESCRIPTOR_TYPE_SAMPLER: {
							layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_SAMPLER;
							info.type = UNIFORM_TYPE_SAMPLER;
							need_array_dimensions = true;
						} break;
						case SPV_REFLECT_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER: {
							layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
							info.type = UNIFORM_TYPE_SAMPLER_WITH_TEXTURE;
							need_array_dimensions = true;
						} break;
						case SPV_REFLECT_DESCRIPTOR_TYPE_SAMPLED_IMAGE: {
							layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE;
							info.type = UNIFORM_TYPE_TEXTURE;
							need_array_dimensions = true;
						} break;
						case SPV_REFLECT_DESCRIPTOR_TYPE_STORAGE_IMAGE: {
							layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE;
							info.type = UNIFORM_TYPE_IMAGE;
							need_array_dimensions = true;
						} break;
						case SPV_REFLECT_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER: {
							layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER;
							info.type = UNIFORM_TYPE_TEXTURE_BUFFER;
							need_array_dimensions = true;
						} break;
						case SPV_REFLECT_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER: {
							layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER;
							info.type = UNIFORM_TYPE_IMAGE_BUFFER;
							need_array_dimensions = true;
						} break;
						case SPV_REFLECT_DESCRIPTOR_TYPE_UNIFORM_BUFFER: {
							layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
							info.type = UNIFORM_TYPE_UNIFORM_BUFFER;
							need_block_size = true;
						} break;
						case SPV_REFLECT_DESCRIPTOR_TYPE_STORAGE_BUFFER: {
							layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER;
							info.type = UNIFORM_TYPE_STORAGE_BUFFER;
							need_block_size = true;
						} break;
						case SPV_REFLECT_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC: {
							ERR_PRINT("Dynamic uniform buffer not supported.");
							continue;
						} break;
						case SPV_REFLECT_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC: {
							ERR_PRINT("Dynamic storage buffer not supported.");
							continue;
						} break;
						case SPV_REFLECT_DESCRIPTOR_TYPE_INPUT_ATTACHMENT: {
							layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT;
							info.type = UNIFORM_TYPE_INPUT_ATTACHMENT;
						} break;
					}

					if (need_array_dimensions) {
						if (binding.array.dims_count == 0) {
							info.length = 1;
						} else {
							for (uint32_t k = 0; k < binding.array.dims_count; k++) {
								if (k == 0) {
									info.length = binding.array.dims[0];
								} else {
									info.length *= binding.array.dims[k];
								}
							}
						}

						layout_binding.descriptorCount = info.length;

					} else if (need_block_size) {
						info.length = binding.block.size;
						layout_binding.descriptorCount = 1;
					} else {
						info.length = 0;
						layout_binding.descriptorCount = 1;
					}

					info.binding = binding.binding;
					uint32_t set = binding.set;

					//print_line("Stage: " + String(shader_stage_names[stage]) + " set=" + itos(set) + " binding=" + itos(info.binding) + " type=" + shader_uniform_names[info.type] + " length=" + itos(info.length));

					ERR_FAIL_COND_V_MSG(set >= MAX_UNIFORM_SETS, RID(),
							"On shader stage '" + String(shader_stage_names[stage]) + "', uniform '" + binding.name + "' uses a set (" + itos(set) + ") index larger than what is supported (" + itos(MAX_UNIFORM_SETS) + ").");

					ERR_FAIL_COND_V_MSG(set >= limits.maxBoundDescriptorSets, RID(),
							"On shader stage '" + String(shader_stage_names[stage]) + "', uniform '" + binding.name + "' uses a set (" + itos(set) + ") index larger than what is supported by the hardware (" + itos(limits.maxBoundDescriptorSets) + ").");

					if (set < (uint32_t)set_bindings.size()) {
						//check if this already exists
						bool exists = false;
						for (int k = 0; k < set_bindings[set].size(); k++) {
							if (set_bindings[set][k].binding == (uint32_t)info.binding) {
								//already exists, verify that it's the same type
								ERR_FAIL_COND_V_MSG(set_bindings[set][k].descriptorType != layout_binding.descriptorType, RID(),
										"On shader stage '" + String(shader_stage_names[stage]) + "', uniform '" + binding.name + "' trying to re-use location for set=" + itos(set) + ", binding=" + itos(info.binding) + " with different uniform type.");

								//also, verify that it's the same size
								ERR_FAIL_COND_V_MSG(set_bindings[set][k].descriptorCount != layout_binding.descriptorCount || uniform_info[set][k].length != info.length, RID(),
										"On shader stage '" + String(shader_stage_names[stage]) + "', uniform '" + binding.name + "' trying to re-use location for set=" + itos(set) + ", binding=" + itos(info.binding) + " with different uniform size.");

								//just append stage mask and return
								set_bindings.write[set].write[k].stageFlags |= shader_stage_masks[stage];
								uniform_info.write[set].write[k].stages |= 1 << stage;
								exists = true;
							}
						}

						if (exists) {
							continue; //merged
						}
					}

					layout_binding.binding = info.binding;
					layout_binding.stageFlags = shader_stage_masks[stage];
					layout_binding.pImmutableSamplers = nullptr; //no support for this yet

					info.stages = 1 << stage;
					info.binding = info.binding;

					if (set >= (uint32_t)set_bindings.size()) {
						set_bindings.resize(set + 1);
						uniform_info.resize(set + 1);
					}

					set_bindings.write[set].push_back(layout_binding);
					uniform_info.write[set].push_back(info);
				}
			}

			if (stage == SHADER_STAGE_VERTEX) {

				uint32_t iv_count = 0;
				result = spvReflectEnumerateInputVariables(&module, &iv_count, nullptr);
				ERR_FAIL_COND_V_MSG(result != SPV_REFLECT_RESULT_SUCCESS, RID(),
						"Reflection of SPIR-V shader stage '" + String(shader_stage_names[p_stages[i].shader_stage]) + "' failed enumerating input variables.");

				if (iv_count) {
					Vector<SpvReflectInterfaceVariable *> input_vars;
					input_vars.resize(iv_count);

					result = spvReflectEnumerateInputVariables(&module, &iv_count, input_vars.ptrw());
					ERR_FAIL_COND_V_MSG(result != SPV_REFLECT_RESULT_SUCCESS, RID(),
							"Reflection of SPIR-V shader stage '" + String(shader_stage_names[p_stages[i].shader_stage]) + "' failed obtaining input variables.");

					for (uint32_t j = 0; j < iv_count; j++) {
						if (input_vars[j] && input_vars[j]->decoration_flags == 0) { //regular input
							vertex_input_mask |= (1 << uint32_t(input_vars[j]->location));
						}
					}
				}
			}

			if (stage == SHADER_STAGE_FRAGMENT) {

				uint32_t ov_count = 0;
				result = spvReflectEnumerateOutputVariables(&module, &ov_count, nullptr);
				ERR_FAIL_COND_V_MSG(result != SPV_REFLECT_RESULT_SUCCESS, RID(),
						"Reflection of SPIR-V shader stage '" + String(shader_stage_names[p_stages[i].shader_stage]) + "' failed enumerating output variables.");

				if (ov_count) {
					Vector<SpvReflectInterfaceVariable *> output_vars;
					output_vars.resize(ov_count);

					result = spvReflectEnumerateOutputVariables(&module, &ov_count, output_vars.ptrw());
					ERR_FAIL_COND_V_MSG(result != SPV_REFLECT_RESULT_SUCCESS, RID(),
							"Reflection of SPIR-V shader stage '" + String(shader_stage_names[p_stages[i].shader_stage]) + "' failed obtaining output variables.");

					for (uint32_t j = 0; j < ov_count; j++) {
						if (output_vars[j]) {
							fragment_outputs = MAX(fragment_outputs, output_vars[j]->location + 1);
						}
					}
				}
			}
			uint32_t pc_count = 0;
			result = spvReflectEnumeratePushConstantBlocks(&module, &pc_count, nullptr);
			ERR_FAIL_COND_V_MSG(result != SPV_REFLECT_RESULT_SUCCESS, RID(),
					"Reflection of SPIR-V shader stage '" + String(shader_stage_names[p_stages[i].shader_stage]) + "' failed enumerating push constants.");

			if (pc_count) {
				ERR_FAIL_COND_V_MSG(pc_count > 1, RID(),
						"Reflection of SPIR-V shader stage '" + String(shader_stage_names[p_stages[i].shader_stage]) + "': Only one push constant is supported, which should be the same across shader stages.");

				Vector<SpvReflectBlockVariable *> pconstants;
				pconstants.resize(pc_count);
				result = spvReflectEnumeratePushConstantBlocks(&module, &pc_count, pconstants.ptrw());
				ERR_FAIL_COND_V_MSG(result != SPV_REFLECT_RESULT_SUCCESS, RID(),
						"Reflection of SPIR-V shader stage '" + String(shader_stage_names[p_stages[i].shader_stage]) + "' failed obtaining push constants.");
#if 0
				if (pconstants[0] == nullptr) {
					FileAccess *f = FileAccess::open("res://popo.spv", FileAccess::WRITE);
					f->store_buffer((const uint8_t *)&SpirV[0], SpirV.size() * sizeof(uint32_t));
					memdelete(f);
				}
#endif

				ERR_FAIL_COND_V_MSG(push_constant.push_constant_size && push_constant.push_constant_size != pconstants[0]->size, RID(),
						"Reflection of SPIR-V shader stage '" + String(shader_stage_names[p_stages[i].shader_stage]) + "': Push constant block must be the same across shader stages.");

				push_constant.push_constant_size = pconstants[0]->size;
				push_constant.push_constants_vk_stage |= shader_stage_masks[stage];

				//print_line("Stage: " + String(shader_stage_names[stage]) + " push constant of size=" + itos(push_constant.push_constant_size));
			}

			// Destroy the reflection data when no longer required.
			spvReflectDestroyShaderModule(&module);
		}

		stages_processed |= (1 << p_stages[i].shader_stage);
	}

	//all good, let's create modules

	_THREAD_SAFE_METHOD_

	Shader shader;

	shader.vertex_input_mask = vertex_input_mask;
	shader.fragment_outputs = fragment_outputs;
	shader.push_constant = push_constant;
	shader.is_compute = is_compute;

	String error_text;

	bool success = true;
	for (int i = 0; i < p_stages.size(); i++) {
		VkShaderModuleCreateInfo shader_module_create_info;
		shader_module_create_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
		shader_module_create_info.pNext = nullptr;
		shader_module_create_info.flags = 0;
		shader_module_create_info.codeSize = p_stages[i].spir_v.size();
		const uint8_t *r = p_stages[i].spir_v.ptr();

		shader_module_create_info.pCode = (const uint32_t *)r;

		VkShaderModule module;
		VkResult res = vkCreateShaderModule(device, &shader_module_create_info, nullptr, &module);
		if (res) {
			success = false;
			error_text = "Error (" + itos(res) + ") creating shader module for stage: " + String(shader_stage_names[p_stages[i].shader_stage]);
			break;
		}

		const VkShaderStageFlagBits shader_stage_bits[SHADER_STAGE_MAX] = {
			VK_SHADER_STAGE_VERTEX_BIT,
			VK_SHADER_STAGE_FRAGMENT_BIT,
			VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT,
			VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT,
			VK_SHADER_STAGE_COMPUTE_BIT,
		};

		VkPipelineShaderStageCreateInfo shader_stage;
		shader_stage.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
		shader_stage.pNext = nullptr;
		shader_stage.flags = 0;
		shader_stage.stage = shader_stage_bits[p_stages[i].shader_stage];
		shader_stage.module = module;
		shader_stage.pName = "main";
		shader_stage.pSpecializationInfo = nullptr;

		shader.pipeline_stages.push_back(shader_stage);
	}
	//proceed to create descriptor sets

	if (success) {

		for (int i = 0; i < set_bindings.size(); i++) {

			//empty ones are fine if they were not used according to spec (binding count will be 0)
			VkDescriptorSetLayoutCreateInfo layout_create_info;
			layout_create_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
			layout_create_info.pNext = nullptr;
			layout_create_info.flags = 0;
			layout_create_info.bindingCount = set_bindings[i].size();
			layout_create_info.pBindings = set_bindings[i].ptr();

			VkDescriptorSetLayout layout;
			VkResult res = vkCreateDescriptorSetLayout(device, &layout_create_info, nullptr, &layout);
			if (res) {
				error_text = "Error (" + itos(res) + ") creating descriptor set layout for set " + itos(i);
				success = false;
				break;
			}

			Shader::Set set;
			set.descriptor_set_layout = layout;
			set.uniform_info = uniform_info[i];
			//sort and hash
			set.uniform_info.sort();

			uint32_t format = 0; //no format, default

			if (set.uniform_info.size()) {
				//has data, needs an actual format;
				UniformSetFormat usformat;
				usformat.uniform_info = set.uniform_info;
				Map<UniformSetFormat, uint32_t>::Element *E = uniform_set_format_cache.find(usformat);
				if (E) {
					format = E->get();
				} else {
					format = uniform_set_format_cache.size() + 1;
					uniform_set_format_cache.insert(usformat, format);
				}
			}

			shader.sets.push_back(set);
			shader.set_formats.push_back(format);
		}
	}

	if (success) {
		//create pipeline layout
		VkPipelineLayoutCreateInfo pipeline_layout_create_info;
		pipeline_layout_create_info.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
		pipeline_layout_create_info.pNext = nullptr;
		pipeline_layout_create_info.flags = 0;
		pipeline_layout_create_info.setLayoutCount = shader.sets.size();

		Vector<VkDescriptorSetLayout> layouts;
		layouts.resize(shader.sets.size());

		for (int i = 0; i < layouts.size(); i++) {
			layouts.write[i] = shader.sets[i].descriptor_set_layout;
		}

		pipeline_layout_create_info.pSetLayouts = layouts.ptr();
		if (push_constant.push_constant_size) {
			VkPushConstantRange push_constant_range;
			push_constant_range.stageFlags = push_constant.push_constants_vk_stage;
			push_constant_range.offset = 0;
			push_constant_range.size = push_constant.push_constant_size;

			pipeline_layout_create_info.pushConstantRangeCount = 1;
			pipeline_layout_create_info.pPushConstantRanges = &push_constant_range;
		} else {
			pipeline_layout_create_info.pushConstantRangeCount = 0;
			pipeline_layout_create_info.pPushConstantRanges = nullptr;
		}

		VkResult err = vkCreatePipelineLayout(device, &pipeline_layout_create_info, nullptr, &shader.pipeline_layout);

		if (err) {
			error_text = "Error (" + itos(err) + ") creating pipeline layout.";
			success = false;
		}
	}

	if (!success) {
		//clean up if failed
		for (int i = 0; i < shader.pipeline_stages.size(); i++) {
			vkDestroyShaderModule(device, shader.pipeline_stages[i].module, nullptr);
		}

		for (int i = 0; i < shader.sets.size(); i++) {
			vkDestroyDescriptorSetLayout(device, shader.sets[i].descriptor_set_layout, nullptr);
		}

		ERR_FAIL_V_MSG(RID(), error_text);
	}

	return shader_owner.make_rid(shader);
}

uint32_t RenderingDeviceVulkan::shader_get_vertex_input_attribute_mask(RID p_shader) {
	_THREAD_SAFE_METHOD_

	const Shader *shader = shader_owner.getornull(p_shader);
	ERR_FAIL_COND_V(!shader, 0);
	return shader->vertex_input_mask;
}

/******************/
/**** UNIFORMS ****/
/******************/

RID RenderingDeviceVulkan::uniform_buffer_create(uint32_t p_size_bytes, const Vector<uint8_t> &p_data) {

	_THREAD_SAFE_METHOD_

	ERR_FAIL_COND_V(p_data.size() && (uint32_t)p_data.size() != p_size_bytes, RID());

	Buffer buffer;
	Error err = _buffer_allocate(&buffer, p_size_bytes, VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, VMA_MEMORY_USAGE_GPU_ONLY);
	ERR_FAIL_COND_V(err != OK, RID());
	if (p_data.size()) {
		uint64_t data_size = p_data.size();
		const uint8_t *r = p_data.ptr();
		_buffer_update(&buffer, 0, r, data_size);
		_buffer_memory_barrier(buffer.buffer, 0, data_size, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, VK_ACCESS_TRANSFER_WRITE_BIT, VK_ACCESS_UNIFORM_READ_BIT, false);
	}
	return uniform_buffer_owner.make_rid(buffer);
}

RID RenderingDeviceVulkan::storage_buffer_create(uint32_t p_size_bytes, const Vector<uint8_t> &p_data) {

	_THREAD_SAFE_METHOD_

	ERR_FAIL_COND_V(p_data.size() && (uint32_t)p_data.size() != p_size_bytes, RID());

	Buffer buffer;
	Error err = _buffer_allocate(&buffer, p_size_bytes, VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_STORAGE_BUFFER_BIT, VMA_MEMORY_USAGE_GPU_ONLY);
	ERR_FAIL_COND_V(err != OK, RID());

	if (p_data.size()) {
		uint64_t data_size = p_data.size();
		const uint8_t *r = p_data.ptr();
		_buffer_update(&buffer, 0, r, data_size);
		_buffer_memory_barrier(buffer.buffer, 0, data_size, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, VK_ACCESS_TRANSFER_WRITE_BIT, VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_SHADER_WRITE_BIT, false);
	}
	return storage_buffer_owner.make_rid(buffer);
}

RID RenderingDeviceVulkan::texture_buffer_create(uint32_t p_size_elements, DataFormat p_format, const Vector<uint8_t> &p_data) {

	_THREAD_SAFE_METHOD_

	uint32_t element_size = get_format_vertex_size(p_format);
	ERR_FAIL_COND_V_MSG(element_size == 0, RID(), "Format requested is not supported for texture buffers");
	uint64_t size_bytes = uint64_t(element_size) * p_size_elements;

	ERR_FAIL_COND_V(p_data.size() && (uint32_t)p_data.size() != size_bytes, RID());

	TextureBuffer texture_buffer;
	Error err = _buffer_allocate(&texture_buffer.buffer, size_bytes, VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT, VMA_MEMORY_USAGE_GPU_ONLY);
	ERR_FAIL_COND_V(err != OK, RID());

	if (p_data.size()) {
		uint64_t data_size = p_data.size();
		const uint8_t *r = p_data.ptr();
		_buffer_update(&texture_buffer.buffer, 0, r, data_size);
		_buffer_memory_barrier(texture_buffer.buffer.buffer, 0, data_size, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, VK_ACCESS_TRANSFER_WRITE_BIT, VK_ACCESS_SHADER_READ_BIT, false);
	}

	VkBufferViewCreateInfo view_create_info;
	view_create_info.sType = VK_STRUCTURE_TYPE_BUFFER_VIEW_CREATE_INFO;
	view_create_info.pNext = nullptr;
	view_create_info.flags = 0;
	view_create_info.buffer = texture_buffer.buffer.buffer;
	view_create_info.format = vulkan_formats[p_format];
	view_create_info.offset = 0;
	view_create_info.range = size_bytes;

	texture_buffer.view = VK_NULL_HANDLE;

	VkResult res = vkCreateBufferView(device, &view_create_info, nullptr, &texture_buffer.view);
	if (res) {
		_buffer_free(&texture_buffer.buffer);
		ERR_FAIL_V_MSG(RID(), "Unable to create buffer view, error " + itos(res) + ".");
	}

	//allocate the view
	return texture_buffer_owner.make_rid(texture_buffer);
}

RenderingDeviceVulkan::DescriptorPool *RenderingDeviceVulkan::_descriptor_pool_allocate(const DescriptorPoolKey &p_key) {
	if (!descriptor_pools.has(p_key)) {
		descriptor_pools[p_key] = Set<DescriptorPool *>();
	}

	DescriptorPool *pool = nullptr;

	for (Set<DescriptorPool *>::Element *E = descriptor_pools[p_key].front(); E; E = E->next()) {
		if (E->get()->usage < max_descriptors_per_pool) {
			pool = E->get();
			break;
		}
	}

	if (!pool) {
		//create a new one
		pool = memnew(DescriptorPool);
		pool->usage = 0;

		VkDescriptorPoolCreateInfo descriptor_pool_create_info;
		descriptor_pool_create_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
		descriptor_pool_create_info.pNext = nullptr;
		descriptor_pool_create_info.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT; // can't think how somebody may NOT need this flag..
		descriptor_pool_create_info.maxSets = max_descriptors_per_pool;
		Vector<VkDescriptorPoolSize> sizes;
		//here comes more vulkan API strangeness

		if (p_key.uniform_type[UNIFORM_TYPE_SAMPLER]) {
			VkDescriptorPoolSize s;
			s.type = VK_DESCRIPTOR_TYPE_SAMPLER;
			s.descriptorCount = p_key.uniform_type[UNIFORM_TYPE_SAMPLER] * max_descriptors_per_pool;
			sizes.push_back(s);
		}
		if (p_key.uniform_type[UNIFORM_TYPE_SAMPLER_WITH_TEXTURE]) {
			VkDescriptorPoolSize s;
			s.type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
			s.descriptorCount = p_key.uniform_type[UNIFORM_TYPE_SAMPLER_WITH_TEXTURE] * max_descriptors_per_pool;
			sizes.push_back(s);
		}
		if (p_key.uniform_type[UNIFORM_TYPE_TEXTURE]) {
			VkDescriptorPoolSize s;
			s.type = VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE;
			s.descriptorCount = p_key.uniform_type[UNIFORM_TYPE_TEXTURE] * max_descriptors_per_pool;
			sizes.push_back(s);
		}
		if (p_key.uniform_type[UNIFORM_TYPE_IMAGE]) {
			VkDescriptorPoolSize s;
			s.type = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE;
			s.descriptorCount = p_key.uniform_type[UNIFORM_TYPE_IMAGE] * max_descriptors_per_pool;
			sizes.push_back(s);
		}
		if (p_key.uniform_type[UNIFORM_TYPE_TEXTURE_BUFFER] || p_key.uniform_type[UNIFORM_TYPE_SAMPLER_WITH_TEXTURE_BUFFER]) {
			VkDescriptorPoolSize s;
			s.type = VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER;
			s.descriptorCount = (p_key.uniform_type[UNIFORM_TYPE_TEXTURE_BUFFER] + p_key.uniform_type[UNIFORM_TYPE_SAMPLER_WITH_TEXTURE_BUFFER]) * max_descriptors_per_pool;
			sizes.push_back(s);
		}
		if (p_key.uniform_type[UNIFORM_TYPE_IMAGE_BUFFER]) {
			VkDescriptorPoolSize s;
			s.type = VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER;
			s.descriptorCount = p_key.uniform_type[UNIFORM_TYPE_IMAGE_BUFFER] * max_descriptors_per_pool;
			sizes.push_back(s);
		}
		if (p_key.uniform_type[UNIFORM_TYPE_UNIFORM_BUFFER]) {
			VkDescriptorPoolSize s;
			s.type = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
			s.descriptorCount = p_key.uniform_type[UNIFORM_TYPE_UNIFORM_BUFFER] * max_descriptors_per_pool;
			sizes.push_back(s);
		}

		if (p_key.uniform_type[UNIFORM_TYPE_STORAGE_BUFFER]) {
			VkDescriptorPoolSize s;
			s.type = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER;
			s.descriptorCount = p_key.uniform_type[UNIFORM_TYPE_STORAGE_BUFFER] * max_descriptors_per_pool;
			sizes.push_back(s);
		}

		if (p_key.uniform_type[UNIFORM_TYPE_INPUT_ATTACHMENT]) {
			VkDescriptorPoolSize s;
			s.type = VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT;
			s.descriptorCount = p_key.uniform_type[UNIFORM_TYPE_INPUT_ATTACHMENT] * max_descriptors_per_pool;
			sizes.push_back(s);
		}

		descriptor_pool_create_info.poolSizeCount = sizes.size();
		descriptor_pool_create_info.pPoolSizes = sizes.ptr();
		VkResult res = vkCreateDescriptorPool(device, &descriptor_pool_create_info, nullptr, &pool->pool);
		if (res) {
			memdelete(pool);
			ERR_FAIL_COND_V_MSG(res, nullptr, "vkCreateDescriptorPool failed with error " + itos(res) + ".");
		}
		descriptor_pools[p_key].insert(pool);
	}

	pool->usage++;

	return pool;
}

void RenderingDeviceVulkan::_descriptor_pool_free(const DescriptorPoolKey &p_key, DescriptorPool *p_pool) {
#ifdef DEBUG_ENABLED
	ERR_FAIL_COND(!descriptor_pools[p_key].has(p_pool));
#endif
	ERR_FAIL_COND(p_pool->usage == 0);
	p_pool->usage--;
	if (p_pool->usage == 0) {
		vkDestroyDescriptorPool(device, p_pool->pool, nullptr);
		descriptor_pools[p_key].erase(p_pool);
		memdelete(p_pool);
		if (descriptor_pools[p_key].empty()) {
			descriptor_pools.erase(p_key);
		}
	}
}

RID RenderingDeviceVulkan::uniform_set_create(const Vector<Uniform> &p_uniforms, RID p_shader, uint32_t p_shader_set) {

	_THREAD_SAFE_METHOD_

	ERR_FAIL_COND_V(p_uniforms.size() == 0, RID());

	Shader *shader = shader_owner.getornull(p_shader);
	ERR_FAIL_COND_V(!shader, RID());

	ERR_FAIL_COND_V_MSG(p_shader_set >= (uint32_t)shader->sets.size() || shader->sets[p_shader_set].uniform_info.size() == 0, RID(),
			"Desired set (" + itos(p_shader_set) + ") not used by shader.");
	//see that all sets in shader are satisfied

	const Shader::Set &set = shader->sets[p_shader_set];

	uint32_t uniform_count = p_uniforms.size();
	const Uniform *uniforms = p_uniforms.ptr();

	uint32_t set_uniform_count = set.uniform_info.size();
	const UniformInfo *set_uniforms = set.uniform_info.ptr();

	Vector<VkWriteDescriptorSet> writes;
	DescriptorPoolKey pool_key;

	//to keep them alive until update call
	List<Vector<VkDescriptorBufferInfo>> buffer_infos;
	List<Vector<VkBufferView>> buffer_views;
	List<Vector<VkDescriptorImageInfo>> image_infos;
	//used for verification to make sure a uniform set does not use a framebuffer bound texture
	Vector<RID> attachable_textures;
	Vector<Texture *> mutable_sampled_textures;
	Vector<Texture *> mutable_storage_textures;

	for (uint32_t i = 0; i < set_uniform_count; i++) {
		const UniformInfo &set_uniform = set_uniforms[i];
		int uniform_idx = -1;
		for (int j = 0; j < (int)uniform_count; j++) {
			if (uniforms[j].binding == set_uniform.binding) {
				uniform_idx = j;
			}
		}
		ERR_FAIL_COND_V_MSG(uniform_idx == -1, RID(),
				"All the shader bindings for the given set must be covered by the uniforms provided.");

		const Uniform &uniform = uniforms[uniform_idx];

		ERR_FAIL_COND_V_MSG(uniform.type != set_uniform.type, RID(),
				"Mismatch uniform type for binding (" + itos(set_uniform.binding) + "). Expected '" + shader_uniform_names[set_uniform.type] + "', supplied: '" + shader_uniform_names[uniform.type] + "'.");

		VkWriteDescriptorSet write; //common header
		write.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
		write.pNext = nullptr;
		write.dstSet = nullptr; //will assign afterwards when everything is valid
		write.dstBinding = set_uniform.binding;
		uint32_t type_size = 1;

		switch (uniform.type) {
			case UNIFORM_TYPE_SAMPLER: {
				if (uniform.ids.size() != set_uniform.length) {
					if (set_uniform.length > 1) {
						ERR_FAIL_V_MSG(RID(), "Sampler (binding: " + itos(uniform.binding) + ") is an array of (" + itos(set_uniform.length) + ") sampler elements, so it should be provided equal number of sampler IDs to satisfy it (IDs provided: " + itos(uniform.ids.size()) + ").");
					} else {
						ERR_FAIL_V_MSG(RID(), "Sampler (binding: " + itos(uniform.binding) + ") should provide one ID referencing a sampler (IDs provided: " + itos(uniform.ids.size()) + ").");
					}
				}

				Vector<VkDescriptorImageInfo> image_info;

				for (int j = 0; j < uniform.ids.size(); j++) {
					VkSampler *sampler = sampler_owner.getornull(uniform.ids[j]);
					ERR_FAIL_COND_V_MSG(!sampler, RID(), "Sampler (binding: " + itos(uniform.binding) + ", index " + itos(j) + ") is not a valid sampler.");

					VkDescriptorImageInfo img_info;
					img_info.sampler = *sampler;
					img_info.imageView = VK_NULL_HANDLE;
					img_info.imageLayout = VK_IMAGE_LAYOUT_UNDEFINED;

					image_info.push_back(img_info);
				}

				write.dstArrayElement = 0;
				write.descriptorCount = uniform.ids.size();
				write.descriptorType = VK_DESCRIPTOR_TYPE_SAMPLER;
				write.pImageInfo = image_infos.push_back(image_info)->get().ptr();
				write.pBufferInfo = nullptr;
				write.pTexelBufferView = nullptr;

				type_size = uniform.ids.size();

			} break;
			case UNIFORM_TYPE_SAMPLER_WITH_TEXTURE: {

				if (uniform.ids.size() != set_uniform.length * 2) {
					if (set_uniform.length > 1) {
						ERR_FAIL_V_MSG(RID(), "SamplerTexture (binding: " + itos(uniform.binding) + ") is an array of (" + itos(set_uniform.length) + ") sampler&texture elements, so it should provided twice the amount of IDs (sampler,texture pairs) to satisfy it (IDs provided: " + itos(uniform.ids.size()) + ").");
					} else {
						ERR_FAIL_V_MSG(RID(), "SamplerTexture (binding: " + itos(uniform.binding) + ") should provide two IDs referencing a sampler and then a texture (IDs provided: " + itos(uniform.ids.size()) + ").");
					}
				}

				Vector<VkDescriptorImageInfo> image_info;

				for (int j = 0; j < uniform.ids.size(); j += 2) {
					VkSampler *sampler = sampler_owner.getornull(uniform.ids[j + 0]);
					ERR_FAIL_COND_V_MSG(!sampler, RID(), "SamplerBuffer (binding: " + itos(uniform.binding) + ", index " + itos(j + 1) + ") is not a valid sampler.");

					Texture *texture = texture_owner.getornull(uniform.ids[j + 1]);
					ERR_FAIL_COND_V_MSG(!texture, RID(), "Texture (binding: " + itos(uniform.binding) + ", index " + itos(j) + ") is not a valid texture.");

					ERR_FAIL_COND_V_MSG(!(texture->usage_flags & TEXTURE_USAGE_SAMPLING_BIT), RID(),
							"Texture (binding: " + itos(uniform.binding) + ", index " + itos(j) + ") needs the TEXTURE_USAGE_SAMPLING_BIT usage flag set in order to be used as uniform.");

					VkDescriptorImageInfo img_info;
					img_info.sampler = *sampler;
					img_info.imageView = texture->view;

					if (texture->usage_flags & (TEXTURE_USAGE_COLOR_ATTACHMENT_BIT | TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT | TEXTURE_USAGE_RESOLVE_ATTACHMENT_BIT)) {
						attachable_textures.push_back(texture->owner.is_valid() ? texture->owner : uniform.ids[j + 1]);
					}

					if (texture->owner.is_valid()) {
						texture = texture_owner.getornull(texture->owner);
						ERR_FAIL_COND_V(!texture, RID()); //bug, should never happen
					}

					img_info.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;

					image_info.push_back(img_info);

					if (texture->usage_flags & TEXTURE_USAGE_STORAGE_BIT) {
						//can also be used as storage, add to mutable sampled
						mutable_sampled_textures.push_back(texture);
					}
				}

				write.dstArrayElement = 0;
				write.descriptorCount = uniform.ids.size() / 2;
				write.descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
				write.pImageInfo = image_infos.push_back(image_info)->get().ptr();
				write.pBufferInfo = nullptr;
				write.pTexelBufferView = nullptr;

				type_size = uniform.ids.size() / 2;

			} break;
			case UNIFORM_TYPE_TEXTURE: {

				if (uniform.ids.size() != set_uniform.length) {
					if (set_uniform.length > 1) {
						ERR_FAIL_V_MSG(RID(), "Texture (binding: " + itos(uniform.binding) + ") is an array of (" + itos(set_uniform.length) + ") textures, so it should be provided equal number of texture IDs to satisfy it (IDs provided: " + itos(uniform.ids.size()) + ").");
					} else {
						ERR_FAIL_V_MSG(RID(), "Texture (binding: " + itos(uniform.binding) + ") should provide one ID referencing a texture (IDs provided: " + itos(uniform.ids.size()) + ").");
					}
				}

				Vector<VkDescriptorImageInfo> image_info;

				for (int j = 0; j < uniform.ids.size(); j++) {
					Texture *texture = texture_owner.getornull(uniform.ids[j]);
					ERR_FAIL_COND_V_MSG(!texture, RID(), "Texture (binding: " + itos(uniform.binding) + ", index " + itos(j) + ") is not a valid texture.");

					ERR_FAIL_COND_V_MSG(!(texture->usage_flags & TEXTURE_USAGE_SAMPLING_BIT), RID(),
							"Texture (binding: " + itos(uniform.binding) + ", index " + itos(j) + ") needs the TEXTURE_USAGE_SAMPLING_BIT usage flag set in order to be used as uniform.");

					VkDescriptorImageInfo img_info;
					img_info.sampler = nullptr;
					img_info.imageView = texture->view;

					if (texture->usage_flags & (TEXTURE_USAGE_COLOR_ATTACHMENT_BIT | TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT | TEXTURE_USAGE_RESOLVE_ATTACHMENT_BIT)) {
						attachable_textures.push_back(texture->owner.is_valid() ? texture->owner : uniform.ids[j]);
					}

					if (texture->owner.is_valid()) {
						texture = texture_owner.getornull(texture->owner);
						ERR_FAIL_COND_V(!texture, RID()); //bug, should never happen
					}

					img_info.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;

					image_info.push_back(img_info);

					if (texture->usage_flags & TEXTURE_USAGE_STORAGE_BIT) {
						//can also be used as storage, add to mutable sampled
						mutable_sampled_textures.push_back(texture);
					}
				}

				write.dstArrayElement = 0;
				write.descriptorCount = uniform.ids.size();
				write.descriptorType = VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE;
				write.pImageInfo = image_infos.push_back(image_info)->get().ptr();
				write.pBufferInfo = nullptr;
				write.pTexelBufferView = nullptr;

				type_size = uniform.ids.size();
			} break;
			case UNIFORM_TYPE_IMAGE: {

				if (uniform.ids.size() != set_uniform.length) {
					if (set_uniform.length > 1) {
						ERR_FAIL_V_MSG(RID(), "Image (binding: " + itos(uniform.binding) + ") is an array of (" + itos(set_uniform.length) + ") textures, so it should be provided equal number of texture IDs to satisfy it (IDs provided: " + itos(uniform.ids.size()) + ").");
					} else {
						ERR_FAIL_V_MSG(RID(), "Image (binding: " + itos(uniform.binding) + ") should provide one ID referencing a texture (IDs provided: " + itos(uniform.ids.size()) + ").");
					}
				}

				Vector<VkDescriptorImageInfo> image_info;

				for (int j = 0; j < uniform.ids.size(); j++) {
					Texture *texture = texture_owner.getornull(uniform.ids[j]);

					ERR_FAIL_COND_V_MSG(!texture, RID(),
							"Image (binding: " + itos(uniform.binding) + ", index " + itos(j) + ") is not a valid texture.");

					ERR_FAIL_COND_V_MSG(!(texture->usage_flags & TEXTURE_USAGE_STORAGE_BIT), RID(),
							"Image (binding: " + itos(uniform.binding) + ", index " + itos(j) + ") needs the TEXTURE_USAGE_STORAGE_BIT usage flag set in order to be used as uniform.");

					VkDescriptorImageInfo img_info;
					img_info.sampler = nullptr;
					img_info.imageView = texture->view;

					if (texture->owner.is_valid()) {
						texture = texture_owner.getornull(texture->owner);
						ERR_FAIL_COND_V(!texture, RID()); //bug, should never happen
					}

					img_info.imageLayout = VK_IMAGE_LAYOUT_GENERAL;

					image_info.push_back(img_info);

					if (texture->usage_flags & TEXTURE_USAGE_SAMPLING_BIT) {
						//can also be used as storage, add to mutable sampled
						mutable_storage_textures.push_back(texture);
					}
				}

				write.dstArrayElement = 0;
				write.descriptorCount = uniform.ids.size();
				write.descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE;
				write.pImageInfo = image_infos.push_back(image_info)->get().ptr();
				write.pBufferInfo = nullptr;
				write.pTexelBufferView = nullptr;

				type_size = uniform.ids.size();

			} break;
			case UNIFORM_TYPE_TEXTURE_BUFFER: {
				if (uniform.ids.size() != set_uniform.length) {
					if (set_uniform.length > 1) {
						ERR_FAIL_V_MSG(RID(), "Buffer (binding: " + itos(uniform.binding) + ") is an array of (" + itos(set_uniform.length) + ") texture buffer elements, so it should be provided equal number of texture buffer IDs to satisfy it (IDs provided: " + itos(uniform.ids.size()) + ").");
					} else {
						ERR_FAIL_V_MSG(RID(), "Buffer (binding: " + itos(uniform.binding) + ") should provide one ID referencing a texture buffer (IDs provided: " + itos(uniform.ids.size()) + ").");
					}
				}

				Vector<VkDescriptorBufferInfo> buffer_info;
				Vector<VkBufferView> buffer_view;

				for (int j = 0; j < uniform.ids.size(); j++) {
					TextureBuffer *buffer = texture_buffer_owner.getornull(uniform.ids[j]);
					ERR_FAIL_COND_V_MSG(!buffer, RID(), "Texture Buffer (binding: " + itos(uniform.binding) + ", index " + itos(j) + ") is not a valid texture buffer.");

					buffer_info.push_back(buffer->buffer.buffer_info);
					buffer_view.push_back(buffer->view);
				}

				write.dstArrayElement = 0;
				write.descriptorCount = uniform.ids.size();
				write.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER;
				write.pImageInfo = nullptr;
				write.pBufferInfo = buffer_infos.push_back(buffer_info)->get().ptr();
				write.pTexelBufferView = buffer_views.push_back(buffer_view)->get().ptr();

				type_size = uniform.ids.size();

			} break;
			case UNIFORM_TYPE_SAMPLER_WITH_TEXTURE_BUFFER: {

				if (uniform.ids.size() != set_uniform.length * 2) {
					if (set_uniform.length > 1) {
						ERR_FAIL_V_MSG(RID(), "SamplerBuffer (binding: " + itos(uniform.binding) + ") is an array of (" + itos(set_uniform.length) + ") sampler buffer elements, so it should provided twice the amount of IDs (sampler,buffer pairs) to satisfy it (IDs provided: " + itos(uniform.ids.size()) + ").");
					} else {
						ERR_FAIL_V_MSG(RID(), "SamplerBuffer (binding: " + itos(uniform.binding) + ") should provide two IDs referencing a sampler and then a texture buffer (IDs provided: " + itos(uniform.ids.size()) + ").");
					}
				}

				Vector<VkDescriptorImageInfo> image_info;
				Vector<VkDescriptorBufferInfo> buffer_info;
				Vector<VkBufferView> buffer_view;

				for (int j = 0; j < uniform.ids.size(); j += 2) {
					VkSampler *sampler = sampler_owner.getornull(uniform.ids[j + 0]);
					ERR_FAIL_COND_V_MSG(!sampler, RID(), "SamplerBuffer (binding: " + itos(uniform.binding) + ", index " + itos(j + 1) + ") is not a valid sampler.");

					TextureBuffer *buffer = texture_buffer_owner.getornull(uniform.ids[j + 1]);

					VkDescriptorImageInfo img_info;
					img_info.sampler = *sampler;
					img_info.imageView = VK_NULL_HANDLE;
					img_info.imageLayout = VK_IMAGE_LAYOUT_UNDEFINED;

					image_info.push_back(img_info);

					ERR_FAIL_COND_V_MSG(!buffer, RID(), "SamplerBuffer (binding: " + itos(uniform.binding) + ", index " + itos(j + 1) + ") is not a valid texture buffer.");

					buffer_info.push_back(buffer->buffer.buffer_info);
					buffer_view.push_back(buffer->view);
				}

				write.dstArrayElement = 0;
				write.descriptorCount = uniform.ids.size() / 2;
				write.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER;
				write.pImageInfo = image_infos.push_back(image_info)->get().ptr();
				write.pBufferInfo = buffer_infos.push_back(buffer_info)->get().ptr();
				write.pTexelBufferView = buffer_views.push_back(buffer_view)->get().ptr();

				type_size = uniform.ids.size() / 2;
			} break;
			case UNIFORM_TYPE_IMAGE_BUFFER: {
				//todo

			} break;
			case UNIFORM_TYPE_UNIFORM_BUFFER: {
				ERR_FAIL_COND_V_MSG(uniform.ids.size() != 1, RID(),
						"Uniform buffer supplied (binding: " + itos(uniform.binding) + ") must provide one ID (" + itos(uniform.ids.size()) + " provided).");

				Buffer *buffer = uniform_buffer_owner.getornull(uniform.ids[0]);
				ERR_FAIL_COND_V_MSG(!buffer, RID(), "Uniform buffer supplied (binding: " + itos(uniform.binding) + ") is invalid.");

				ERR_FAIL_COND_V_MSG(buffer->size != (uint32_t)set_uniform.length, RID(),
						"Uniform buffer supplied (binding: " + itos(uniform.binding) + ") size (" + itos(buffer->size) + " does not match size of shader uniform: (" + itos(set_uniform.length) + ").");

				write.dstArrayElement = 0;
				write.descriptorCount = 1;
				write.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
				write.pImageInfo = nullptr;
				write.pBufferInfo = &buffer->buffer_info;
				write.pTexelBufferView = nullptr;

			} break;
			case UNIFORM_TYPE_STORAGE_BUFFER: {
				ERR_FAIL_COND_V_MSG(uniform.ids.size() != 1, RID(),
						"Storage buffer supplied (binding: " + itos(uniform.binding) + ") must provide one ID (" + itos(uniform.ids.size()) + " provided).");

				Buffer *buffer = storage_buffer_owner.getornull(uniform.ids[0]);
				ERR_FAIL_COND_V_MSG(!buffer, RID(), "Storage buffer supplied (binding: " + itos(uniform.binding) + ") is invalid.");

				//if 0, then its sized on link time
				ERR_FAIL_COND_V_MSG(set_uniform.length > 0 && buffer->size != (uint32_t)set_uniform.length, RID(),
						"Storage buffer supplied (binding: " + itos(uniform.binding) + ") size (" + itos(buffer->size) + " does not match size of shader uniform: (" + itos(set_uniform.length) + ").");

				write.dstArrayElement = 0;
				write.descriptorCount = 1;
				write.descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER;
				write.pImageInfo = nullptr;
				write.pBufferInfo = &buffer->buffer_info;
				write.pTexelBufferView = nullptr;
			} break;
			case UNIFORM_TYPE_INPUT_ATTACHMENT: {

			} break;
			default: {
			}
		}

		writes.push_back(write);

		ERR_FAIL_COND_V_MSG(pool_key.uniform_type[set_uniform.type] == MAX_DESCRIPTOR_POOL_ELEMENT, RID(),
				"Uniform set reached the limit of bindings for the same type (" + itos(MAX_DESCRIPTOR_POOL_ELEMENT) + ").");
		pool_key.uniform_type[set_uniform.type] += type_size;
	}

	//need a descriptor pool
	DescriptorPool *pool = _descriptor_pool_allocate(pool_key);

	ERR_FAIL_COND_V(!pool, RID());

	VkDescriptorSetAllocateInfo descriptor_set_allocate_info;

	descriptor_set_allocate_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
	descriptor_set_allocate_info.pNext = nullptr;
	descriptor_set_allocate_info.descriptorPool = pool->pool;
	descriptor_set_allocate_info.descriptorSetCount = 1;
	descriptor_set_allocate_info.pSetLayouts = &shader->sets[p_shader_set].descriptor_set_layout;

	VkDescriptorSet descriptor_set;

	VkResult res = vkAllocateDescriptorSets(device, &descriptor_set_allocate_info, &descriptor_set);
	if (res) {
		_descriptor_pool_free(pool_key, pool); // meh
		ERR_FAIL_V_MSG(RID(), "Cannot allocate descriptor sets, error " + itos(res) + ".");
	}

	UniformSet uniform_set;
	uniform_set.pool = pool;
	uniform_set.pool_key = pool_key;
	uniform_set.descriptor_set = descriptor_set;
	uniform_set.format = shader->set_formats[p_shader_set];
	uniform_set.attachable_textures = attachable_textures;
	uniform_set.mutable_sampled_textures = mutable_sampled_textures;
	uniform_set.mutable_storage_textures = mutable_storage_textures;
	uniform_set.shader_set = p_shader_set;
	uniform_set.shader_id = p_shader;

	RID id = uniform_set_owner.make_rid(uniform_set);
	//add dependencies
	_add_dependency(id, p_shader);
	for (uint32_t i = 0; i < uniform_count; i++) {
		const Uniform &uniform = uniforms[i];
		int id_count = uniform.ids.size();
		const RID *ids = uniform.ids.ptr();
		for (int j = 0; j < id_count; j++) {
			_add_dependency(id, ids[j]);
		}
	}

	//write the contents
	if (writes.size()) {
		for (int i = 0; i < writes.size(); i++) {
			writes.write[i].dstSet = descriptor_set;
		}
		vkUpdateDescriptorSets(device, writes.size(), writes.ptr(), 0, nullptr);
	}

	return id;
}

bool RenderingDeviceVulkan::uniform_set_is_valid(RID p_uniform_set) {
	return uniform_set_owner.owns(p_uniform_set);
}

Error RenderingDeviceVulkan::buffer_update(RID p_buffer, uint32_t p_offset, uint32_t p_size, const void *p_data, bool p_sync_with_draw) {
	_THREAD_SAFE_METHOD_

	ERR_FAIL_COND_V_MSG(draw_list && p_sync_with_draw, ERR_INVALID_PARAMETER,
			"Updating buffers in 'sync to draw' mode is forbidden during creation of a draw list");

	VkPipelineStageFlags dst_stage_mask;
	VkAccessFlags dst_access;

	Buffer *buffer = nullptr;
	if (vertex_buffer_owner.owns(p_buffer)) {
		dst_stage_mask = VK_PIPELINE_STAGE_VERTEX_INPUT_BIT;
		dst_access = VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT;
		buffer = vertex_buffer_owner.getornull(p_buffer);
	} else if (index_buffer_owner.owns(p_buffer)) {
		dst_stage_mask = VK_PIPELINE_STAGE_VERTEX_INPUT_BIT;
		dst_access = VK_ACCESS_INDEX_READ_BIT;
		buffer = index_buffer_owner.getornull(p_buffer);
	} else if (uniform_buffer_owner.owns(p_buffer)) {
		dst_stage_mask = VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT;
		dst_access = VK_ACCESS_UNIFORM_READ_BIT;
		buffer = uniform_buffer_owner.getornull(p_buffer);
	} else if (texture_buffer_owner.owns(p_buffer)) {
		dst_stage_mask = VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT;
		dst_access = VK_ACCESS_SHADER_READ_BIT;
		buffer = &texture_buffer_owner.getornull(p_buffer)->buffer;
	} else if (storage_buffer_owner.owns(p_buffer)) {
		dst_stage_mask = VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT;
		dst_access = VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_SHADER_WRITE_BIT;
		buffer = storage_buffer_owner.getornull(p_buffer);
	} else {
		ERR_FAIL_V_MSG(ERR_INVALID_PARAMETER, "Buffer argument is not a valid buffer of any type.");
	}

	ERR_FAIL_COND_V_MSG(p_offset + p_size > buffer->size, ERR_INVALID_PARAMETER,
			"Attempted to write buffer (" + itos((p_offset + p_size) - buffer->size) + " bytes) past the end.");

	Error err = _buffer_update(buffer, p_offset, (uint8_t *)p_data, p_size, p_sync_with_draw);
	if (err) {
		return err;
	}

	_buffer_memory_barrier(buffer->buffer, p_offset, p_size, VK_PIPELINE_STAGE_TRANSFER_BIT, dst_stage_mask, VK_ACCESS_TRANSFER_WRITE_BIT, dst_access, p_sync_with_draw);
#ifdef FORCE_FULL_BARRIER
	_full_barrier(p_sync_with_draw);
#else
	_buffer_memory_barrier(buffer->buffer, p_offset, p_size, VK_PIPELINE_STAGE_TRANSFER_BIT, dst_stage_mask, VK_ACCESS_TRANSFER_WRITE_BIT, dst_access, p_sync_with_draw);
#endif
	return err;
}

Vector<uint8_t> RenderingDeviceVulkan::buffer_get_data(RID p_buffer) {

	_THREAD_SAFE_METHOD_

	Buffer *buffer = nullptr;
	if (vertex_buffer_owner.owns(p_buffer)) {
		buffer = vertex_buffer_owner.getornull(p_buffer);
	} else if (index_buffer_owner.owns(p_buffer)) {
		buffer = index_buffer_owner.getornull(p_buffer);
	} else if (texture_buffer_owner.owns(p_buffer)) {
		buffer = &texture_buffer_owner.getornull(p_buffer)->buffer;
	} else if (storage_buffer_owner.owns(p_buffer)) {
		buffer = storage_buffer_owner.getornull(p_buffer);
	} else {
		ERR_FAIL_V_MSG(Vector<uint8_t>(), "Buffer is either invalid or this type of buffer can't be retrieved. Only Index and Vertex buffers allow retrieving.");
	}

	VkCommandBuffer command_buffer = frames[frame].setup_command_buffer;
	Buffer tmp_buffer;
	_buffer_allocate(&tmp_buffer, buffer->size, VK_BUFFER_USAGE_TRANSFER_DST_BIT, VMA_MEMORY_USAGE_CPU_ONLY);
	VkBufferCopy region;
	region.srcOffset = 0;
	region.dstOffset = 0;
	region.size = buffer->size;
	vkCmdCopyBuffer(command_buffer, buffer->buffer, tmp_buffer.buffer, 1, &region); //dst buffer is in CPU, but I wonder if src buffer needs a barrier for this..
	//flush everything so memory can be safely mapped
	_flush(true);

	void *buffer_mem;
	VkResult vkerr = vmaMapMemory(allocator, tmp_buffer.allocation, &buffer_mem);
	ERR_FAIL_COND_V_MSG(vkerr, Vector<uint8_t>(), "vmaMapMemory failed with error " + itos(vkerr) + ".");

	Vector<uint8_t> buffer_data;
	{

		buffer_data.resize(buffer->size);
		uint8_t *w = buffer_data.ptrw();
		copymem(w, buffer_mem, buffer->size);
	}

	vmaUnmapMemory(allocator, tmp_buffer.allocation);

	_buffer_free(&tmp_buffer);

	return buffer_data;
}

/*************************/
/**** RENDER PIPELINE ****/
/*************************/

RID RenderingDeviceVulkan::render_pipeline_create(RID p_shader, FramebufferFormatID p_framebuffer_format, VertexFormatID p_vertex_format, RenderPrimitive p_render_primitive, const PipelineRasterizationState &p_rasterization_state, const PipelineMultisampleState &p_multisample_state, const PipelineDepthStencilState &p_depth_stencil_state, const PipelineColorBlendState &p_blend_state, int p_dynamic_state_flags) {

	_THREAD_SAFE_METHOD_

	//needs a shader
	Shader *shader = shader_owner.getornull(p_shader);
	ERR_FAIL_COND_V(!shader, RID());

	ERR_FAIL_COND_V_MSG(shader->is_compute, RID(),
			"Compute shaders can't be used in render pipelines");

	if (p_framebuffer_format == INVALID_ID) {
		//if nothing provided, use an empty one (no attachments)
		p_framebuffer_format = framebuffer_format_create(Vector<AttachmentFormat>());
	}
	ERR_FAIL_COND_V(!framebuffer_formats.has(p_framebuffer_format), RID());
	const FramebufferFormat &fb_format = framebuffer_formats[p_framebuffer_format];

	{ //validate shader vs framebuffer

		ERR_FAIL_COND_V_MSG(shader->fragment_outputs != fb_format.color_attachments, RID(),
				"Mismatch fragment output bindings (" + itos(shader->fragment_outputs) + ") and framebuffer color buffers (" + itos(fb_format.color_attachments) + ") when binding both in render pipeline.");
	}
	//vertex
	VkPipelineVertexInputStateCreateInfo pipeline_vertex_input_state_create_info;

	if (p_vertex_format != INVALID_ID) {
		//uses vertices, else it does not
		ERR_FAIL_COND_V(!vertex_formats.has(p_vertex_format), RID());
		const VertexDescriptionCache &vd = vertex_formats[p_vertex_format];

		pipeline_vertex_input_state_create_info = vd.create_info;

		//validate with inputs
		for (uint32_t i = 0; i < 32; i++) {
			if (!(shader->vertex_input_mask & (1 << i))) {
				continue;
			}
			bool found = false;
			for (int j = 0; j < vd.vertex_formats.size(); j++) {
				if (vd.vertex_formats[j].location == i) {
					found = true;
				}
			}

			ERR_FAIL_COND_V_MSG(!found, RID(),
					"Shader vertex input location (" + itos(i) + ") not provided in vertex input description for pipeline creation.");
		}

	} else {
		//does not use vertices
		pipeline_vertex_input_state_create_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
		pipeline_vertex_input_state_create_info.pNext = nullptr;
		pipeline_vertex_input_state_create_info.flags = 0;
		pipeline_vertex_input_state_create_info.vertexBindingDescriptionCount = 0;
		pipeline_vertex_input_state_create_info.pVertexBindingDescriptions = nullptr;
		pipeline_vertex_input_state_create_info.vertexAttributeDescriptionCount = 0;
		pipeline_vertex_input_state_create_info.pVertexAttributeDescriptions = nullptr;

		ERR_FAIL_COND_V_MSG(shader->vertex_input_mask != 0, RID(),
				"Shader contains vertex inputs, but no vertex input description was provided for pipeline creation.");
	}
	//input assembly

	ERR_FAIL_INDEX_V(p_render_primitive, RENDER_PRIMITIVE_MAX, RID());

	VkPipelineInputAssemblyStateCreateInfo input_assembly_create_info;
	input_assembly_create_info.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
	input_assembly_create_info.pNext = nullptr;
	input_assembly_create_info.flags = 0;

	static const VkPrimitiveTopology topology_list[RENDER_PRIMITIVE_MAX] = {
		VK_PRIMITIVE_TOPOLOGY_POINT_LIST,
		VK_PRIMITIVE_TOPOLOGY_LINE_LIST,
		VK_PRIMITIVE_TOPOLOGY_LINE_LIST_WITH_ADJACENCY,
		VK_PRIMITIVE_TOPOLOGY_LINE_STRIP,
		VK_PRIMITIVE_TOPOLOGY_LINE_STRIP_WITH_ADJACENCY,
		VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST,
		VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST_WITH_ADJACENCY,
		VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP,
		VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP_WITH_ADJACENCY,
		VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP,
		VK_PRIMITIVE_TOPOLOGY_PATCH_LIST
	};

	input_assembly_create_info.topology = topology_list[p_render_primitive];
	input_assembly_create_info.primitiveRestartEnable = (p_render_primitive == RENDER_PRIMITIVE_TRIANGLE_STRIPS_WITH_RESTART_INDEX);

	//tesselation
	VkPipelineTessellationStateCreateInfo tesselation_create_info;
	tesselation_create_info.sType = VK_STRUCTURE_TYPE_PIPELINE_TESSELLATION_STATE_CREATE_INFO;
	tesselation_create_info.pNext = nullptr;
	tesselation_create_info.flags = 0;
	ERR_FAIL_COND_V(p_rasterization_state.patch_control_points < 1 || p_rasterization_state.patch_control_points > limits.maxTessellationPatchSize, RID());
	tesselation_create_info.patchControlPoints = p_rasterization_state.patch_control_points;

	VkPipelineViewportStateCreateInfo viewport_state_create_info;
	viewport_state_create_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
	viewport_state_create_info.pNext = nullptr;
	viewport_state_create_info.flags = 0;
	viewport_state_create_info.viewportCount = 1; //if VR extensions are supported at some point, this will have to be customizable in the framebuffer format
	viewport_state_create_info.pViewports = nullptr;
	viewport_state_create_info.scissorCount = 1;
	viewport_state_create_info.pScissors = nullptr;

	//rasterization
	VkPipelineRasterizationStateCreateInfo rasterization_state_create_info;
	rasterization_state_create_info.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
	rasterization_state_create_info.pNext = nullptr;
	rasterization_state_create_info.flags = 0;
	rasterization_state_create_info.depthClampEnable = p_rasterization_state.enable_depth_clamp;
	rasterization_state_create_info.rasterizerDiscardEnable = p_rasterization_state.discard_primitives;
	rasterization_state_create_info.polygonMode = (p_rasterization_state.wireframe ? VK_POLYGON_MODE_LINE : VK_POLYGON_MODE_FILL);
	static VkCullModeFlags cull_mode[3] = {
		VK_CULL_MODE_NONE,
		VK_CULL_MODE_FRONT_BIT,
		VK_CULL_MODE_BACK_BIT
	};

	ERR_FAIL_INDEX_V(p_rasterization_state.cull_mode, 3, RID());
	rasterization_state_create_info.cullMode = cull_mode[p_rasterization_state.cull_mode];
	rasterization_state_create_info.frontFace = (p_rasterization_state.front_face == POLYGON_FRONT_FACE_CLOCKWISE ? VK_FRONT_FACE_CLOCKWISE : VK_FRONT_FACE_COUNTER_CLOCKWISE);
	rasterization_state_create_info.depthBiasEnable = p_rasterization_state.depth_bias_enable;
	rasterization_state_create_info.depthBiasConstantFactor = p_rasterization_state.depth_bias_constant_factor;
	rasterization_state_create_info.depthBiasClamp = p_rasterization_state.depth_bias_clamp;
	rasterization_state_create_info.depthBiasSlopeFactor = p_rasterization_state.depth_bias_slope_factor;
	rasterization_state_create_info.lineWidth = p_rasterization_state.line_width;

	//multisample
	VkPipelineMultisampleStateCreateInfo multisample_state_create_info;
	multisample_state_create_info.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
	multisample_state_create_info.pNext = nullptr;
	multisample_state_create_info.flags = 0;

	multisample_state_create_info.rasterizationSamples = rasterization_sample_count[p_multisample_state.sample_count];
	multisample_state_create_info.sampleShadingEnable = p_multisample_state.enable_sample_shading;
	multisample_state_create_info.minSampleShading = p_multisample_state.min_sample_shading;
	Vector<VkSampleMask> sample_mask;
	if (p_multisample_state.sample_mask.size()) {
		//use sample mask
		int rasterization_sample_mask_expected_size[TEXTURE_SAMPLES_MAX] = {
			1, 2, 4, 8, 16, 32, 64
		};
		ERR_FAIL_COND_V(rasterization_sample_mask_expected_size[p_multisample_state.sample_count] != p_multisample_state.sample_mask.size(), RID());
		sample_mask.resize(p_multisample_state.sample_mask.size());
		for (int i = 0; i < p_multisample_state.sample_mask.size(); i++) {
			VkSampleMask mask = p_multisample_state.sample_mask[i];
			sample_mask.push_back(mask);
		}
		multisample_state_create_info.pSampleMask = sample_mask.ptr();
	} else {
		multisample_state_create_info.pSampleMask = nullptr;
	}

	multisample_state_create_info.alphaToCoverageEnable = p_multisample_state.enable_alpha_to_coverage;
	multisample_state_create_info.alphaToOneEnable = p_multisample_state.enable_alpha_to_one;

	//depth stencil

	VkPipelineDepthStencilStateCreateInfo depth_stencil_state_create_info;
	depth_stencil_state_create_info.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
	depth_stencil_state_create_info.pNext = nullptr;
	depth_stencil_state_create_info.flags = 0;
	depth_stencil_state_create_info.depthTestEnable = p_depth_stencil_state.enable_depth_test;
	depth_stencil_state_create_info.depthWriteEnable = p_depth_stencil_state.enable_depth_write;
	ERR_FAIL_INDEX_V(p_depth_stencil_state.depth_compare_operator, COMPARE_OP_MAX, RID());
	depth_stencil_state_create_info.depthCompareOp = compare_operators[p_depth_stencil_state.depth_compare_operator];
	depth_stencil_state_create_info.depthBoundsTestEnable = p_depth_stencil_state.enable_depth_range;
	depth_stencil_state_create_info.stencilTestEnable = p_depth_stencil_state.enable_stencil;

	ERR_FAIL_INDEX_V(p_depth_stencil_state.stencil_operation_front.fail, STENCIL_OP_MAX, RID());
	depth_stencil_state_create_info.front.failOp = stencil_operations[p_depth_stencil_state.stencil_operation_front.fail];
	ERR_FAIL_INDEX_V(p_depth_stencil_state.stencil_operation_front.pass, STENCIL_OP_MAX, RID());
	depth_stencil_state_create_info.front.passOp = stencil_operations[p_depth_stencil_state.stencil_operation_front.pass];
	ERR_FAIL_INDEX_V(p_depth_stencil_state.stencil_operation_front.depth_fail, STENCIL_OP_MAX, RID());
	depth_stencil_state_create_info.front.depthFailOp = stencil_operations[p_depth_stencil_state.stencil_operation_front.depth_fail];
	ERR_FAIL_INDEX_V(p_depth_stencil_state.stencil_operation_front.compare, COMPARE_OP_MAX, RID());
	depth_stencil_state_create_info.front.compareOp = compare_operators[p_depth_stencil_state.stencil_operation_front.compare];
	depth_stencil_state_create_info.front.compareMask = p_depth_stencil_state.stencil_operation_front.compare_mask;
	depth_stencil_state_create_info.front.writeMask = p_depth_stencil_state.stencil_operation_front.write_mask;
	depth_stencil_state_create_info.front.reference = p_depth_stencil_state.stencil_operation_front.reference;

	ERR_FAIL_INDEX_V(p_depth_stencil_state.stencil_operation_back.fail, STENCIL_OP_MAX, RID());
	depth_stencil_state_create_info.back.failOp = stencil_operations[p_depth_stencil_state.stencil_operation_back.fail];
	ERR_FAIL_INDEX_V(p_depth_stencil_state.stencil_operation_back.pass, STENCIL_OP_MAX, RID());
	depth_stencil_state_create_info.back.passOp = stencil_operations[p_depth_stencil_state.stencil_operation_back.pass];
	ERR_FAIL_INDEX_V(p_depth_stencil_state.stencil_operation_back.depth_fail, STENCIL_OP_MAX, RID());
	depth_stencil_state_create_info.back.depthFailOp = stencil_operations[p_depth_stencil_state.stencil_operation_back.depth_fail];
	ERR_FAIL_INDEX_V(p_depth_stencil_state.stencil_operation_back.compare, COMPARE_OP_MAX, RID());
	depth_stencil_state_create_info.back.compareOp = compare_operators[p_depth_stencil_state.stencil_operation_back.compare];
	depth_stencil_state_create_info.back.compareMask = p_depth_stencil_state.stencil_operation_back.compare_mask;
	depth_stencil_state_create_info.back.writeMask = p_depth_stencil_state.stencil_operation_back.write_mask;
	depth_stencil_state_create_info.back.reference = p_depth_stencil_state.stencil_operation_back.reference;

	depth_stencil_state_create_info.minDepthBounds = p_depth_stencil_state.depth_range_min;
	depth_stencil_state_create_info.maxDepthBounds = p_depth_stencil_state.depth_range_max;

	//blend state
	VkPipelineColorBlendStateCreateInfo color_blend_state_create_info;
	color_blend_state_create_info.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
	color_blend_state_create_info.pNext = nullptr;
	color_blend_state_create_info.flags = 0;
	color_blend_state_create_info.logicOpEnable = p_blend_state.enable_logic_op;
	ERR_FAIL_INDEX_V(p_blend_state.logic_op, LOGIC_OP_MAX, RID());
	color_blend_state_create_info.logicOp = logic_operations[p_blend_state.logic_op];

	ERR_FAIL_COND_V(fb_format.color_attachments != p_blend_state.attachments.size(), RID());

	Vector<VkPipelineColorBlendAttachmentState> attachment_states;

	for (int i = 0; i < p_blend_state.attachments.size(); i++) {
		VkPipelineColorBlendAttachmentState state;
		state.blendEnable = p_blend_state.attachments[i].enable_blend;

		ERR_FAIL_INDEX_V(p_blend_state.attachments[i].src_color_blend_factor, BLEND_FACTOR_MAX, RID());
		state.srcColorBlendFactor = blend_factors[p_blend_state.attachments[i].src_color_blend_factor];
		ERR_FAIL_INDEX_V(p_blend_state.attachments[i].dst_color_blend_factor, BLEND_FACTOR_MAX, RID());
		state.dstColorBlendFactor = blend_factors[p_blend_state.attachments[i].dst_color_blend_factor];
		ERR_FAIL_INDEX_V(p_blend_state.attachments[i].color_blend_op, BLEND_OP_MAX, RID());
		state.colorBlendOp = blend_operations[p_blend_state.attachments[i].color_blend_op];

		ERR_FAIL_INDEX_V(p_blend_state.attachments[i].src_alpha_blend_factor, BLEND_FACTOR_MAX, RID());
		state.srcAlphaBlendFactor = blend_factors[p_blend_state.attachments[i].src_alpha_blend_factor];
		ERR_FAIL_INDEX_V(p_blend_state.attachments[i].dst_alpha_blend_factor, BLEND_FACTOR_MAX, RID());
		state.dstAlphaBlendFactor = blend_factors[p_blend_state.attachments[i].dst_alpha_blend_factor];
		ERR_FAIL_INDEX_V(p_blend_state.attachments[i].alpha_blend_op, BLEND_OP_MAX, RID());
		state.alphaBlendOp = blend_operations[p_blend_state.attachments[i].alpha_blend_op];

		state.colorWriteMask = 0;
		if (p_blend_state.attachments[i].write_r) {
			state.colorWriteMask |= VK_COLOR_COMPONENT_R_BIT;
		}
		if (p_blend_state.attachments[i].write_g) {
			state.colorWriteMask |= VK_COLOR_COMPONENT_G_BIT;
		}
		if (p_blend_state.attachments[i].write_b) {
			state.colorWriteMask |= VK_COLOR_COMPONENT_B_BIT;
		}
		if (p_blend_state.attachments[i].write_a) {
			state.colorWriteMask |= VK_COLOR_COMPONENT_A_BIT;
		}

		attachment_states.push_back(state);
	};

	color_blend_state_create_info.attachmentCount = attachment_states.size();
	color_blend_state_create_info.pAttachments = attachment_states.ptr();

	color_blend_state_create_info.blendConstants[0] = p_blend_state.blend_constant.r;
	color_blend_state_create_info.blendConstants[1] = p_blend_state.blend_constant.g;
	color_blend_state_create_info.blendConstants[2] = p_blend_state.blend_constant.b;
	color_blend_state_create_info.blendConstants[3] = p_blend_state.blend_constant.a;

	//dynamic state

	VkPipelineDynamicStateCreateInfo dynamic_state_create_info;
	dynamic_state_create_info.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
	dynamic_state_create_info.pNext = nullptr;
	dynamic_state_create_info.flags = 0;
	Vector<VkDynamicState> dynamic_states; //vulkan is weird..

	dynamic_states.push_back(VK_DYNAMIC_STATE_VIEWPORT); //viewport and scissor are always dynamic
	dynamic_states.push_back(VK_DYNAMIC_STATE_SCISSOR);

	if (p_dynamic_state_flags & DYNAMIC_STATE_LINE_WIDTH) {
		dynamic_states.push_back(VK_DYNAMIC_STATE_LINE_WIDTH);
	}

	if (p_dynamic_state_flags & DYNAMIC_STATE_DEPTH_BIAS) {
		dynamic_states.push_back(VK_DYNAMIC_STATE_DEPTH_BIAS);
	}

	if (p_dynamic_state_flags & DYNAMIC_STATE_BLEND_CONSTANTS) {
		dynamic_states.push_back(VK_DYNAMIC_STATE_BLEND_CONSTANTS);
	}

	if (p_dynamic_state_flags & DYNAMIC_STATE_DEPTH_BOUNDS) {
		dynamic_states.push_back(VK_DYNAMIC_STATE_DEPTH_BOUNDS);
	}

	if (p_dynamic_state_flags & DYNAMIC_STATE_STENCIL_COMPARE_MASK) {
		dynamic_states.push_back(VK_DYNAMIC_STATE_STENCIL_COMPARE_MASK);
	}

	if (p_dynamic_state_flags & DYNAMIC_STATE_STENCIL_WRITE_MASK) {
		dynamic_states.push_back(VK_DYNAMIC_STATE_STENCIL_WRITE_MASK);
	}

	if (p_dynamic_state_flags & DYNAMIC_STATE_STENCIL_REFERENCE) {
		dynamic_states.push_back(VK_DYNAMIC_STATE_STENCIL_REFERENCE);
	}

	dynamic_state_create_info.dynamicStateCount = dynamic_states.size();
	dynamic_state_create_info.pDynamicStates = dynamic_states.ptr();

	//finally, pipeline create info
	VkGraphicsPipelineCreateInfo graphics_pipeline_create_info;

	graphics_pipeline_create_info.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
	graphics_pipeline_create_info.pNext = nullptr;
	graphics_pipeline_create_info.flags = 0;

	graphics_pipeline_create_info.stageCount = shader->pipeline_stages.size();
	graphics_pipeline_create_info.pStages = shader->pipeline_stages.ptr();
	graphics_pipeline_create_info.pVertexInputState = &pipeline_vertex_input_state_create_info;
	graphics_pipeline_create_info.pInputAssemblyState = &input_assembly_create_info;
	graphics_pipeline_create_info.pTessellationState = &tesselation_create_info;
	graphics_pipeline_create_info.pViewportState = &viewport_state_create_info;
	graphics_pipeline_create_info.pRasterizationState = &rasterization_state_create_info;
	graphics_pipeline_create_info.pMultisampleState = &multisample_state_create_info;
	graphics_pipeline_create_info.pDepthStencilState = &depth_stencil_state_create_info;
	graphics_pipeline_create_info.pColorBlendState = &color_blend_state_create_info;
	graphics_pipeline_create_info.pDynamicState = &dynamic_state_create_info;
	graphics_pipeline_create_info.layout = shader->pipeline_layout;
	graphics_pipeline_create_info.renderPass = fb_format.render_pass;

	graphics_pipeline_create_info.subpass = 0;
	graphics_pipeline_create_info.basePipelineHandle = nullptr;
	graphics_pipeline_create_info.basePipelineIndex = 0;

	RenderPipeline pipeline;
	VkResult err = vkCreateGraphicsPipelines(device, nullptr, 1, &graphics_pipeline_create_info, nullptr, &pipeline.pipeline);
	ERR_FAIL_COND_V_MSG(err, RID(), "vkCreateGraphicsPipelines failed with error " + itos(err) + ".");

	pipeline.set_formats = shader->set_formats;
	pipeline.push_constant_stages = shader->push_constant.push_constants_vk_stage;
	pipeline.pipeline_layout = shader->pipeline_layout;
	pipeline.shader = p_shader;
	pipeline.push_constant_size = shader->push_constant.push_constant_size;

#ifdef DEBUG_ENABLED
	pipeline.validation.dynamic_state = p_dynamic_state_flags;
	pipeline.validation.framebuffer_format = p_framebuffer_format;
	pipeline.validation.vertex_format = p_vertex_format;
	pipeline.validation.uses_restart_indices = input_assembly_create_info.primitiveRestartEnable;

	static const uint32_t primitive_divisor[RENDER_PRIMITIVE_MAX] = {
		1, 2, 1, 1, 1, 3, 1, 1, 1, 1, 1
	};
	pipeline.validation.primitive_divisor = primitive_divisor[p_render_primitive];
	static const uint32_t primitive_minimum[RENDER_PRIMITIVE_MAX] = {
		1,
		2,
		2,
		2,
		2,
		3,
		3,
		3,
		3,
		3,
		1,
	};
	pipeline.validation.primitive_minimum = primitive_minimum[p_render_primitive];
#endif
	//create ID to associate with this pipeline
	RID id = render_pipeline_owner.make_rid(pipeline);
	//now add aall the dependencies
	_add_dependency(id, p_shader);
	return id;
}

bool RenderingDeviceVulkan::render_pipeline_is_valid(RID p_pipeline) {
	_THREAD_SAFE_METHOD_
	return render_pipeline_owner.owns(p_pipeline);
}

/**************************/
/**** COMPUTE PIPELINE ****/
/**************************/

RID RenderingDeviceVulkan::compute_pipeline_create(RID p_shader) {
	_THREAD_SAFE_METHOD_

	//needs a shader
	Shader *shader = shader_owner.getornull(p_shader);
	ERR_FAIL_COND_V(!shader, RID());

	ERR_FAIL_COND_V_MSG(!shader->is_compute, RID(),
			"Non-compute shaders can't be used in compute pipelines");

	//finally, pipeline create info
	VkComputePipelineCreateInfo compute_pipeline_create_info;

	compute_pipeline_create_info.sType = VK_STRUCTURE_TYPE_COMPUTE_PIPELINE_CREATE_INFO;
	compute_pipeline_create_info.pNext = nullptr;
	compute_pipeline_create_info.flags = 0;

	compute_pipeline_create_info.stage = shader->pipeline_stages[0];
	compute_pipeline_create_info.layout = shader->pipeline_layout;
	compute_pipeline_create_info.basePipelineHandle = nullptr;
	compute_pipeline_create_info.basePipelineIndex = 0;

	ComputePipeline pipeline;
	VkResult err = vkCreateComputePipelines(device, nullptr, 1, &compute_pipeline_create_info, nullptr, &pipeline.pipeline);
	ERR_FAIL_COND_V_MSG(err, RID(), "vkCreateComputePipelines failed with error " + itos(err) + ".");

	pipeline.set_formats = shader->set_formats;
	pipeline.push_constant_stages = shader->push_constant.push_constants_vk_stage;
	pipeline.pipeline_layout = shader->pipeline_layout;
	pipeline.shader = p_shader;
	pipeline.push_constant_size = shader->push_constant.push_constant_size;

	//create ID to associate with this pipeline
	RID id = compute_pipeline_owner.make_rid(pipeline);
	//now add aall the dependencies
	_add_dependency(id, p_shader);
	return id;
}

bool RenderingDeviceVulkan::compute_pipeline_is_valid(RID p_pipeline) {

	return compute_pipeline_owner.owns(p_pipeline);
}

/****************/
/**** SCREEN ****/
/****************/

int RenderingDeviceVulkan::screen_get_width(DisplayServer::WindowID p_screen) const {
	_THREAD_SAFE_METHOD_

	return context->window_get_width(p_screen);
}
int RenderingDeviceVulkan::screen_get_height(DisplayServer::WindowID p_screen) const {
	_THREAD_SAFE_METHOD_

	return context->window_get_height(p_screen);
}
RenderingDevice::FramebufferFormatID RenderingDeviceVulkan::screen_get_framebuffer_format() const {

	_THREAD_SAFE_METHOD_

	//very hacky, but not used often per frame so I guess ok
	VkFormat vkformat = context->get_screen_format();
	DataFormat format = DATA_FORMAT_MAX;
	for (int i = 0; i < DATA_FORMAT_MAX; i++) {
		if (vkformat == vulkan_formats[i]) {
			format = DataFormat(i);
			break;
		}
	}

	ERR_FAIL_COND_V(format == DATA_FORMAT_MAX, INVALID_ID);

	AttachmentFormat attachment;
	attachment.format = format;
	attachment.samples = TEXTURE_SAMPLES_1;
	attachment.usage_flags = TEXTURE_USAGE_COLOR_ATTACHMENT_BIT;
	Vector<AttachmentFormat> screen_attachment;
	screen_attachment.push_back(attachment);
	return const_cast<RenderingDeviceVulkan *>(this)->framebuffer_format_create(screen_attachment);
}

/*******************/
/**** DRAW LIST ****/
/*******************/

RenderingDevice::DrawListID RenderingDeviceVulkan::draw_list_begin_for_screen(DisplayServer::WindowID p_screen, const Color &p_clear_color) {

	_THREAD_SAFE_METHOD_

	ERR_FAIL_COND_V_MSG(draw_list != nullptr, INVALID_ID, "Only one draw list can be active at the same time.");
	ERR_FAIL_COND_V_MSG(compute_list != nullptr, INVALID_ID, "Only one draw/compute list can be active at the same time.");

	VkCommandBuffer command_buffer = frames[frame].draw_command_buffer;
	draw_list = memnew(DrawList);
	draw_list->command_buffer = command_buffer;
#ifdef DEBUG_ENABLED
	draw_list->validation.framebuffer_format = screen_get_framebuffer_format();
#endif
	draw_list_count = 0;
	draw_list_split = false;

	VkRenderPassBeginInfo render_pass_begin;
	render_pass_begin.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
	render_pass_begin.pNext = nullptr;
	render_pass_begin.renderPass = context->window_get_render_pass(p_screen);
	render_pass_begin.framebuffer = context->window_get_framebuffer(p_screen);

	render_pass_begin.renderArea.extent.width = context->window_get_width(p_screen);
	render_pass_begin.renderArea.extent.height = context->window_get_height(p_screen);
	render_pass_begin.renderArea.offset.x = 0;
	render_pass_begin.renderArea.offset.y = 0;

	render_pass_begin.clearValueCount = 1;

	VkClearValue clear_value;
	clear_value.color.float32[0] = p_clear_color.r;
	clear_value.color.float32[1] = p_clear_color.g;
	clear_value.color.float32[2] = p_clear_color.b;
	clear_value.color.float32[3] = p_clear_color.a;

	render_pass_begin.pClearValues = &clear_value;

	vkCmdBeginRenderPass(command_buffer, &render_pass_begin, VK_SUBPASS_CONTENTS_INLINE);

	uint32_t size_x = screen_get_width(p_screen);
	uint32_t size_y = screen_get_height(p_screen);

	VkViewport viewport;
	viewport.x = 0;
	viewport.y = 0;
	viewport.width = size_x;
	viewport.height = size_y;
	viewport.minDepth = 0;
	viewport.maxDepth = 1.0;

	vkCmdSetViewport(command_buffer, 0, 1, &viewport);

	VkRect2D scissor;
	scissor.offset.x = 0;
	scissor.offset.y = 0;
	scissor.extent.width = size_x;
	scissor.extent.height = size_y;

	vkCmdSetScissor(command_buffer, 0, 1, &scissor);

	return ID_TYPE_DRAW_LIST;
}

Error RenderingDeviceVulkan::_draw_list_setup_framebuffer(Framebuffer *p_framebuffer, InitialAction p_initial_color_action, FinalAction p_final_color_action, InitialAction p_initial_depth_action, FinalAction p_final_depth_action, VkFramebuffer *r_framebuffer, VkRenderPass *r_render_pass) {

	Framebuffer::VersionKey vk;
	vk.initial_color_action = p_initial_color_action;
	vk.final_color_action = p_final_color_action;
	vk.initial_depth_action = p_initial_depth_action;
	vk.final_depth_action = p_final_depth_action;

	if (!p_framebuffer->framebuffers.has(vk)) {
		//need to create this version
		Framebuffer::Version version;

		version.render_pass = _render_pass_create(framebuffer_formats[p_framebuffer->format_id].E->key().attachments, p_initial_color_action, p_final_color_action, p_initial_depth_action, p_final_depth_action);

		VkFramebufferCreateInfo framebuffer_create_info;
		framebuffer_create_info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
		framebuffer_create_info.pNext = nullptr;
		framebuffer_create_info.flags = 0;
		framebuffer_create_info.renderPass = version.render_pass;
		Vector<VkImageView> attachments;
		for (int i = 0; i < p_framebuffer->texture_ids.size(); i++) {
			Texture *texture = texture_owner.getornull(p_framebuffer->texture_ids[i]);
			ERR_FAIL_COND_V(!texture, ERR_BUG);
			attachments.push_back(texture->view);
			ERR_FAIL_COND_V(texture->width != p_framebuffer->size.width, ERR_BUG);
			ERR_FAIL_COND_V(texture->height != p_framebuffer->size.height, ERR_BUG);
		}
		framebuffer_create_info.attachmentCount = attachments.size();
		framebuffer_create_info.pAttachments = attachments.ptr();
		framebuffer_create_info.width = p_framebuffer->size.width;
		framebuffer_create_info.height = p_framebuffer->size.height;
		framebuffer_create_info.layers = 1;

		VkResult err = vkCreateFramebuffer(device, &framebuffer_create_info, nullptr, &version.framebuffer);
		ERR_FAIL_COND_V_MSG(err, ERR_CANT_CREATE, "vkCreateFramebuffer failed with error " + itos(err) + ".");

		p_framebuffer->framebuffers.insert(vk, version);
	}
	const Framebuffer::Version &version = p_framebuffer->framebuffers[vk];
	*r_framebuffer = version.framebuffer;
	*r_render_pass = version.render_pass;

	return OK;
}

Error RenderingDeviceVulkan::_draw_list_render_pass_begin(Framebuffer *framebuffer, InitialAction p_initial_color_action, FinalAction p_final_color_action, InitialAction p_initial_depth_action, FinalAction p_final_depth_action, const Vector<Color> &p_clear_colors, float p_clear_depth, uint32_t p_clear_stencil, Point2i viewport_offset, Point2i viewport_size, VkFramebuffer vkframebuffer, VkRenderPass render_pass, VkCommandBuffer command_buffer, VkSubpassContents subpass_contents) {

	VkRenderPassBeginInfo render_pass_begin;
	render_pass_begin.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
	render_pass_begin.pNext = nullptr;
	render_pass_begin.renderPass = render_pass;
	render_pass_begin.framebuffer = vkframebuffer;

	render_pass_begin.renderArea.extent.width = viewport_size.width;
	render_pass_begin.renderArea.extent.height = viewport_size.height;
	render_pass_begin.renderArea.offset.x = viewport_offset.x;
	render_pass_begin.renderArea.offset.y = viewport_offset.y;

	Vector<VkClearValue> clear_values;
	clear_values.resize(framebuffer->texture_ids.size());

	{
		int color_index = 0;
		for (int i = 0; i < framebuffer->texture_ids.size(); i++) {
			Texture *texture = texture_owner.getornull(framebuffer->texture_ids[i]);
			VkClearValue clear_value;

			if (color_index < p_clear_colors.size() && texture->usage_flags & TEXTURE_USAGE_COLOR_ATTACHMENT_BIT) {
				ERR_FAIL_INDEX_V(color_index, p_clear_colors.size(), ERR_BUG); //a bug
				Color clear_color = p_clear_colors[color_index];
				clear_value.color.float32[0] = clear_color.r;
				clear_value.color.float32[1] = clear_color.g;
				clear_value.color.float32[2] = clear_color.b;
				clear_value.color.float32[3] = clear_color.a;
				color_index++;
			} else if (texture->usage_flags & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) {
				clear_value.depthStencil.depth = p_clear_depth;
				clear_value.depthStencil.stencil = p_clear_stencil;
			} else {
				clear_value.color.float32[0] = 0;
				clear_value.color.float32[1] = 0;
				clear_value.color.float32[2] = 0;
				clear_value.color.float32[3] = 0;
			}
			clear_values.write[i] = clear_value;
		}
	}

	render_pass_begin.clearValueCount = clear_values.size();
	render_pass_begin.pClearValues = clear_values.ptr();

	vkCmdBeginRenderPass(command_buffer, &render_pass_begin, subpass_contents);

	//mark textures as bound
	draw_list_bound_textures.clear();
	draw_list_unbind_color_textures = p_final_color_action != FINAL_ACTION_CONTINUE;
	draw_list_unbind_depth_textures = p_final_depth_action != FINAL_ACTION_CONTINUE;

	for (int i = 0; i < framebuffer->texture_ids.size(); i++) {
		Texture *texture = texture_owner.getornull(framebuffer->texture_ids[i]);
		texture->bound = true;
		draw_list_bound_textures.push_back(framebuffer->texture_ids[i]);
	}

	return OK;
}

void RenderingDeviceVulkan::_draw_list_insert_clear_region(DrawList *draw_list, Framebuffer *framebuffer, Point2i viewport_offset, Point2i viewport_size, bool p_clear_color, const Vector<Color> &p_clear_colors, bool p_clear_depth, float p_depth, uint32_t p_stencil) {
	Vector<VkClearAttachment> clear_attachments;
	int color_index = 0;
	for (int i = 0; i < framebuffer->texture_ids.size(); i++) {
		Texture *texture = texture_owner.getornull(framebuffer->texture_ids[i]);
		VkClearAttachment clear_at;
		if (p_clear_color && texture->usage_flags & TEXTURE_USAGE_COLOR_ATTACHMENT_BIT) {
			ERR_FAIL_INDEX(color_index, p_clear_colors.size()); //a bug
			Color clear_color = p_clear_colors[color_index];
			clear_at.clearValue.color.float32[0] = clear_color.r;
			clear_at.clearValue.color.float32[1] = clear_color.g;
			clear_at.clearValue.color.float32[2] = clear_color.b;
			clear_at.clearValue.color.float32[3] = clear_color.a;
			clear_at.colorAttachment = color_index++;
			clear_at.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
		} else if (p_clear_depth && texture->usage_flags & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) {

			clear_at.clearValue.depthStencil.depth = p_depth;
			clear_at.clearValue.depthStencil.stencil = p_stencil;
			clear_at.colorAttachment = 0;
			clear_at.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
			if (format_has_stencil(texture->format)) {
				clear_at.aspectMask |= VK_IMAGE_ASPECT_STENCIL_BIT;
			}
		} else {
			ERR_CONTINUE(true);
		}
		clear_attachments.push_back(clear_at);
	}

	VkClearRect cr;
	cr.baseArrayLayer = 0;
	cr.layerCount = 1;
	cr.rect.offset.x = viewport_offset.x;
	cr.rect.offset.y = viewport_offset.y;
	cr.rect.extent.width = viewport_size.width;
	cr.rect.extent.height = viewport_size.height;

	vkCmdClearAttachments(draw_list->command_buffer, clear_attachments.size(), clear_attachments.ptr(), 1, &cr);
}

RenderingDevice::DrawListID RenderingDeviceVulkan::draw_list_begin(RID p_framebuffer, InitialAction p_initial_color_action, FinalAction p_final_color_action, InitialAction p_initial_depth_action, FinalAction p_final_depth_action, const Vector<Color> &p_clear_color_values, float p_clear_depth, uint32_t p_clear_stencil, const Rect2 &p_region) {

	_THREAD_SAFE_METHOD_

	ERR_FAIL_COND_V_MSG(draw_list != nullptr, INVALID_ID, "Only one draw list can be active at the same time.");
	ERR_FAIL_COND_V_MSG(compute_list != nullptr, INVALID_ID, "Only one draw/compute list can be active at the same time.");

	Framebuffer *framebuffer = framebuffer_owner.getornull(p_framebuffer);
	ERR_FAIL_COND_V(!framebuffer, INVALID_ID);

	Point2i viewport_offset;
	Point2i viewport_size = framebuffer->size;
	bool needs_clear_color = false;
	bool needs_clear_depth = false;

	if (p_region != Rect2() && p_region != Rect2(Vector2(), viewport_size)) { //check custom region
		Rect2i viewport(viewport_offset, viewport_size);
		Rect2i regioni = p_region;
		if (!(regioni.position.x >= viewport.position.x) && (regioni.position.y >= viewport.position.y) &&
				((regioni.position.x + regioni.size.x) <= (viewport.position.x + viewport.size.x)) &&
				((regioni.position.y + regioni.size.y) <= (viewport.position.y + viewport.size.y))) {
			ERR_FAIL_V_MSG(INVALID_ID, "When supplying a custom region, it must be contained within the framebuffer rectangle");
		}

		viewport_offset = regioni.position;
		viewport_size = regioni.size;

		if (p_initial_color_action == INITIAL_ACTION_CLEAR) {
			needs_clear_color = true;
			p_initial_color_action = INITIAL_ACTION_KEEP;
		}
		if (p_initial_depth_action == INITIAL_ACTION_CLEAR) {
			needs_clear_depth = true;
			p_initial_depth_action = INITIAL_ACTION_KEEP;
		}
	}

	if (p_initial_color_action == INITIAL_ACTION_CLEAR) { //check clear values

		int color_attachments = framebuffer_formats[framebuffer->format_id].color_attachments;
		ERR_FAIL_COND_V_MSG(p_clear_color_values.size() != color_attachments, INVALID_ID,
				"Clear color values supplied (" + itos(p_clear_color_values.size()) + ") differ from the amount required for framebuffer (" + itos(color_attachments) + ").");
	}

	VkFramebuffer vkframebuffer;
	VkRenderPass render_pass;

	Error err = _draw_list_setup_framebuffer(framebuffer, p_initial_color_action, p_final_color_action, p_initial_depth_action, p_final_depth_action, &vkframebuffer, &render_pass);
	ERR_FAIL_COND_V(err != OK, INVALID_ID);

	VkCommandBuffer command_buffer = frames[frame].draw_command_buffer;
	err = _draw_list_render_pass_begin(framebuffer, p_initial_color_action, p_final_color_action, p_initial_depth_action, p_final_depth_action, p_clear_color_values, p_clear_depth, p_clear_stencil, viewport_offset, viewport_size, vkframebuffer, render_pass, command_buffer, VK_SUBPASS_CONTENTS_INLINE);

	if (err != OK) {
		return INVALID_ID;
	}

	draw_list = memnew(DrawList);
	draw_list->command_buffer = command_buffer;
#ifdef DEBUG_ENABLED
	draw_list->validation.framebuffer_format = framebuffer->format_id;
#endif
	draw_list_count = 0;
	draw_list_split = false;

	if (needs_clear_color || needs_clear_depth) {
		_draw_list_insert_clear_region(draw_list, framebuffer, viewport_offset, viewport_size, needs_clear_color, p_clear_color_values, needs_clear_depth, p_clear_depth, p_clear_stencil);
	}

	VkViewport viewport;
	viewport.x = viewport_offset.x;
	viewport.y = viewport_offset.y;
	viewport.width = viewport_size.width;
	viewport.height = viewport_size.height;
	viewport.minDepth = 0;
	viewport.maxDepth = 1.0;

	vkCmdSetViewport(command_buffer, 0, 1, &viewport);

	VkRect2D scissor;
	scissor.offset.x = viewport_offset.x;
	scissor.offset.y = viewport_offset.y;
	scissor.extent.width = viewport_size.width;
	scissor.extent.height = viewport_size.height;

	vkCmdSetScissor(command_buffer, 0, 1, &scissor);

	draw_list->viewport = Rect2i(viewport_offset, viewport_size);
	return ID_TYPE_DRAW_LIST;
}

Error RenderingDeviceVulkan::draw_list_begin_split(RID p_framebuffer, uint32_t p_splits, DrawListID *r_split_ids, InitialAction p_initial_color_action, FinalAction p_final_color_action, InitialAction p_initial_depth_action, FinalAction p_final_depth_action, const Vector<Color> &p_clear_color_values, float p_clear_depth, uint32_t p_clear_stencil, const Rect2 &p_region) {

	_THREAD_SAFE_METHOD_

	ERR_FAIL_COND_V(p_splits < 1, ERR_INVALID_DECLARATION);

	Framebuffer *framebuffer = framebuffer_owner.getornull(p_framebuffer);
	ERR_FAIL_COND_V(!framebuffer, ERR_INVALID_DECLARATION);

	Point2i viewport_offset;
	Point2i viewport_size = framebuffer->size;

	bool needs_clear_color = false;
	bool needs_clear_depth = false;

	if (p_region != Rect2() && p_region != Rect2(Vector2(), viewport_size)) { //check custom region
		Rect2i viewport(viewport_offset, viewport_size);
		Rect2i regioni = p_region;
		if (!(regioni.position.x >= viewport.position.x) && (regioni.position.y >= viewport.position.y) &&
				((regioni.position.x + regioni.size.x) <= (viewport.position.x + viewport.size.x)) &&
				((regioni.position.y + regioni.size.y) <= (viewport.position.y + viewport.size.y))) {
			ERR_FAIL_V_MSG(ERR_INVALID_PARAMETER, "When supplying a custom region, it must be contained within the framebuffer rectangle");
		}

		viewport_offset = regioni.position;
		viewport_size = regioni.size;

		if (p_initial_color_action == INITIAL_ACTION_CLEAR) {
			needs_clear_color = true;
			p_initial_color_action = INITIAL_ACTION_KEEP;
		}
		if (p_initial_depth_action == INITIAL_ACTION_CLEAR) {
			needs_clear_depth = true;
			p_initial_depth_action = INITIAL_ACTION_KEEP;
		}
	}

	if (p_initial_color_action == INITIAL_ACTION_CLEAR) { //check clear values

		int color_attachments = framebuffer_formats[framebuffer->format_id].color_attachments;
		ERR_FAIL_COND_V_MSG(p_clear_color_values.size() != color_attachments, ERR_INVALID_PARAMETER,
				"Clear color values supplied (" + itos(p_clear_color_values.size()) + ") differ from the amount required for framebuffer (" + itos(color_attachments) + ").");
	}

	if (p_splits > (uint32_t)split_draw_list_allocators.size()) {
		uint32_t from = split_draw_list_allocators.size();
		split_draw_list_allocators.resize(p_splits);
		for (uint32_t i = from; i < p_splits; i++) {

			VkCommandPoolCreateInfo cmd_pool_info;
			cmd_pool_info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
			cmd_pool_info.pNext = nullptr;
			cmd_pool_info.queueFamilyIndex = context->get_graphics_queue();
			cmd_pool_info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;

			VkResult res = vkCreateCommandPool(device, &cmd_pool_info, nullptr, &split_draw_list_allocators.write[i].command_pool);
			ERR_FAIL_COND_V_MSG(res, ERR_CANT_CREATE, "vkCreateCommandPool failed with error " + itos(res) + ".");

			for (int j = 0; j < frame_count; j++) {

				VkCommandBuffer command_buffer;

				VkCommandBufferAllocateInfo cmdbuf;
				//no command buffer exists, create it.
				cmdbuf.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
				cmdbuf.pNext = nullptr;
				cmdbuf.commandPool = split_draw_list_allocators[i].command_pool;
				cmdbuf.level = VK_COMMAND_BUFFER_LEVEL_SECONDARY;
				cmdbuf.commandBufferCount = 1;

				VkResult err = vkAllocateCommandBuffers(device, &cmdbuf, &command_buffer);
				ERR_FAIL_COND_V_MSG(err, ERR_CANT_CREATE, "vkAllocateCommandBuffers failed with error " + itos(err) + ".");

				split_draw_list_allocators.write[i].command_buffers.push_back(command_buffer);
			}
		}
	}

	VkFramebuffer vkframebuffer;
	VkRenderPass render_pass;

	Error err = _draw_list_setup_framebuffer(framebuffer, p_initial_color_action, p_final_color_action, p_initial_depth_action, p_final_depth_action, &vkframebuffer, &render_pass);
	ERR_FAIL_COND_V(err != OK, ERR_CANT_CREATE);

	VkCommandBuffer frame_command_buffer = frames[frame].draw_command_buffer;
	err = _draw_list_render_pass_begin(framebuffer, p_initial_color_action, p_final_color_action, p_initial_depth_action, p_final_depth_action, p_clear_color_values, p_clear_depth, p_clear_stencil, viewport_offset, viewport_size, vkframebuffer, render_pass, frame_command_buffer, VK_SUBPASS_CONTENTS_SECONDARY_COMMAND_BUFFERS);

	if (err != OK) {
		return ERR_CANT_CREATE;
	}

	draw_list = memnew_arr(DrawList, p_splits);
	draw_list_count = p_splits;
	draw_list_split = true;

	for (uint32_t i = 0; i < p_splits; i++) {

		//take a command buffer and initialize it
		VkCommandBuffer command_buffer = split_draw_list_allocators[p_splits].command_buffers[frame];

		VkCommandBufferInheritanceInfo inheritance_info;
		inheritance_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_INHERITANCE_INFO;
		inheritance_info.pNext = nullptr;
		inheritance_info.renderPass = render_pass;
		inheritance_info.subpass = 0;
		inheritance_info.framebuffer = vkframebuffer;
		inheritance_info.occlusionQueryEnable = false;
		inheritance_info.queryFlags = 0; //?
		inheritance_info.pipelineStatistics = 0;

		VkCommandBufferBeginInfo cmdbuf_begin;
		cmdbuf_begin.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
		cmdbuf_begin.pNext = nullptr;
		cmdbuf_begin.flags = VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT | VK_COMMAND_BUFFER_USAGE_RENDER_PASS_CONTINUE_BIT;
		cmdbuf_begin.pInheritanceInfo = &inheritance_info;

		VkResult res = vkResetCommandBuffer(command_buffer, 0);
		if (res) {
			memdelete_arr(draw_list);
			draw_list = nullptr;
			ERR_FAIL_V_MSG(ERR_CANT_CREATE, "vkResetCommandBuffer failed with error " + itos(res) + ".");
		}

		res = vkBeginCommandBuffer(command_buffer, &cmdbuf_begin);
		if (res) {
			memdelete_arr(draw_list);
			draw_list = nullptr;
			ERR_FAIL_V_MSG(ERR_CANT_CREATE, "vkBeginCommandBuffer failed with error " + itos(res) + ".");
		}

		draw_list[i].command_buffer = command_buffer;
#ifdef DEBUG_ENABLED
		draw_list[i].validation.framebuffer_format = framebuffer->format_id;
#endif

		if (i == 0 && (needs_clear_color || needs_clear_depth)) {
			_draw_list_insert_clear_region(draw_list, framebuffer, viewport_offset, viewport_size, needs_clear_color, p_clear_color_values, needs_clear_depth, p_clear_depth, p_clear_stencil);
		}

		VkViewport viewport;
		viewport.x = viewport_offset.x;
		viewport.y = viewport_offset.y;
		viewport.width = viewport_size.width;
		viewport.height = viewport_size.height;
		viewport.minDepth = 0;
		viewport.maxDepth = 1.0;

		vkCmdSetViewport(command_buffer, 0, 1, &viewport);

		VkRect2D scissor;
		scissor.offset.x = viewport_offset.x;
		scissor.offset.y = viewport_offset.y;
		scissor.extent.width = viewport_size.width;
		scissor.extent.height = viewport_size.height;

		vkCmdSetScissor(command_buffer, 0, 1, &scissor);
		r_split_ids[i] = (DrawListID(1) << DrawListID(ID_TYPE_SPLIT_DRAW_LIST)) + i;

		draw_list[i].viewport = Rect2i(viewport_offset, viewport_size);
	}

	return OK;
}

RenderingDeviceVulkan::DrawList *RenderingDeviceVulkan::_get_draw_list_ptr(DrawListID p_id) {

	if (p_id < 0) {
		return nullptr;
	}

	if (!draw_list) {
		return nullptr;
	} else if (p_id == ID_TYPE_DRAW_LIST) {
		if (draw_list_split) {
			return nullptr;
		}
		return draw_list;
	} else if (p_id >> DrawListID(ID_BASE_SHIFT) == ID_TYPE_SPLIT_DRAW_LIST) {
		if (!draw_list_split) {
			return nullptr;
		}

		uint64_t index = p_id & ((DrawListID(1) << DrawListID(ID_BASE_SHIFT)) - 1); //mask

		if (index >= draw_list_count) {
			return nullptr;
		}

		return &draw_list[index];
	} else {
		return nullptr;
	}
}

void RenderingDeviceVulkan::draw_list_bind_render_pipeline(DrawListID p_list, RID p_render_pipeline) {

	DrawList *dl = _get_draw_list_ptr(p_list);
	ERR_FAIL_COND(!dl);
#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(!dl->validation.active, "Submitted Draw Lists can no longer be modified.");
#endif

	const RenderPipeline *pipeline = render_pipeline_owner.getornull(p_render_pipeline);
	ERR_FAIL_COND(!pipeline);
#ifdef DEBUG_ENABLED
	ERR_FAIL_COND(pipeline->validation.framebuffer_format != dl->validation.framebuffer_format);
#endif

	if (p_render_pipeline == dl->state.pipeline) {
		return; //redundant state, return.
	}

	dl->state.pipeline = p_render_pipeline;
	dl->state.pipeline_layout = pipeline->pipeline_layout;

	vkCmdBindPipeline(dl->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline->pipeline);

	if (dl->state.pipeline_shader != pipeline->shader) {
		// shader changed, so descriptor sets may become incompatible.

		//go through ALL sets, and unbind them (and all those above) if the format is different

		uint32_t pcount = pipeline->set_formats.size(); //formats count in this pipeline
		dl->state.set_count = MAX(dl->state.set_count, pcount);
		const uint32_t *pformats = pipeline->set_formats.ptr(); //pipeline set formats

		bool sets_valid = true; //once invalid, all above become invalid
		for (uint32_t i = 0; i < pcount; i++) {
			//if a part of the format is different, invalidate it (and the rest)
			if (!sets_valid || dl->state.sets[i].pipeline_expected_format != pformats[i]) {
				dl->state.sets[i].bound = false;
				dl->state.sets[i].pipeline_expected_format = pformats[i];
				sets_valid = false;
			}
		}

		for (uint32_t i = pcount; i < dl->state.set_count; i++) {
			//unbind the ones above (not used) if exist
			dl->state.sets[i].bound = false;
		}

		dl->state.set_count = pcount; //update set count

		if (pipeline->push_constant_size) {
			dl->state.pipeline_push_constant_stages = pipeline->push_constant_stages;
#ifdef DEBUG_ENABLED
			dl->validation.pipeline_push_constant_suppplied = false;
#endif
		}

		dl->state.pipeline_shader = pipeline->shader;
	}

#ifdef DEBUG_ENABLED
	//update render pass pipeline info
	dl->validation.pipeline_active = true;
	dl->validation.pipeline_dynamic_state = pipeline->validation.dynamic_state;
	dl->validation.pipeline_vertex_format = pipeline->validation.vertex_format;
	dl->validation.pipeline_uses_restart_indices = pipeline->validation.uses_restart_indices;
	dl->validation.pipeline_primitive_divisor = pipeline->validation.primitive_divisor;
	dl->validation.pipeline_primitive_minimum = pipeline->validation.primitive_minimum;
	dl->validation.pipeline_push_constant_size = pipeline->push_constant_size;
#endif
}

void RenderingDeviceVulkan::draw_list_bind_uniform_set(DrawListID p_list, RID p_uniform_set, uint32_t p_index) {

#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(p_index >= limits.maxBoundDescriptorSets || p_index > MAX_UNIFORM_SETS,
			"Attempting to bind a descriptor set (" + itos(p_index) + ") greater than what the hardware supports (" + itos(limits.maxBoundDescriptorSets) + ").");
#endif
	DrawList *dl = _get_draw_list_ptr(p_list);
	ERR_FAIL_COND(!dl);

#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(!dl->validation.active, "Submitted Draw Lists can no longer be modified.");
#endif

	const UniformSet *uniform_set = uniform_set_owner.getornull(p_uniform_set);
	ERR_FAIL_COND(!uniform_set);

	if (p_index > dl->state.set_count) {
		dl->state.set_count = p_index;
	}

	dl->state.sets[p_index].descriptor_set = uniform_set->descriptor_set; //update set pointer
	dl->state.sets[p_index].bound = false; //needs rebind
	dl->state.sets[p_index].uniform_set_format = uniform_set->format;
	dl->state.sets[p_index].uniform_set = p_uniform_set;

#ifdef DEBUG_ENABLED
	{ //validate that textures bound are not attached as framebuffer bindings
		uint32_t attachable_count = uniform_set->attachable_textures.size();
		const RID *attachable_ptr = uniform_set->attachable_textures.ptr();
		uint32_t bound_count = draw_list_bound_textures.size();
		const RID *bound_ptr = draw_list_bound_textures.ptr();
		for (uint32_t i = 0; i < attachable_count; i++) {
			for (uint32_t j = 0; j < bound_count; j++) {
				ERR_FAIL_COND_MSG(attachable_ptr[i] == bound_ptr[j],
						"Attempted to use the same texture in framebuffer attachment and a uniform set, this is not allowed.");
			}
		}
	}
#endif
}

void RenderingDeviceVulkan::draw_list_bind_vertex_array(DrawListID p_list, RID p_vertex_array) {
	DrawList *dl = _get_draw_list_ptr(p_list);
	ERR_FAIL_COND(!dl);
#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(!dl->validation.active, "Submitted Draw Lists can no longer be modified.");
#endif

	const VertexArray *vertex_array = vertex_array_owner.getornull(p_vertex_array);
	ERR_FAIL_COND(!vertex_array);

	if (dl->state.vertex_array == p_vertex_array) {
		return; //already set
	}

	dl->state.vertex_array = p_vertex_array;

#ifdef DEBUG_ENABLED
	dl->validation.vertex_format = vertex_array->description;
	dl->validation.vertex_max_instances_allowed = vertex_array->max_instances_allowed;
#endif
	dl->validation.vertex_array_size = vertex_array->vertex_count;
	vkCmdBindVertexBuffers(dl->command_buffer, 0, vertex_array->buffers.size(), vertex_array->buffers.ptr(), vertex_array->offsets.ptr());
}
void RenderingDeviceVulkan::draw_list_bind_index_array(DrawListID p_list, RID p_index_array) {

	DrawList *dl = _get_draw_list_ptr(p_list);
	ERR_FAIL_COND(!dl);
#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(!dl->validation.active, "Submitted Draw Lists can no longer be modified.");
#endif

	const IndexArray *index_array = index_array_owner.getornull(p_index_array);
	ERR_FAIL_COND(!index_array);

	if (dl->state.index_array == p_index_array) {
		return; //already set
	}

	dl->state.index_array = p_index_array;
#ifdef DEBUG_ENABLED
	dl->validation.index_array_max_index = index_array->max_index;
#endif
	dl->validation.index_array_size = index_array->indices;
	dl->validation.index_array_offset = index_array->offset;

	vkCmdBindIndexBuffer(dl->command_buffer, index_array->buffer, index_array->offset, index_array->index_type);
}

void RenderingDeviceVulkan::draw_list_set_line_width(DrawListID p_list, float p_width) {

	DrawList *dl = _get_draw_list_ptr(p_list);
	ERR_FAIL_COND(!dl);
#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(!dl->validation.active, "Submitted Draw Lists can no longer be modified.");
#endif

	vkCmdSetLineWidth(dl->command_buffer, p_width);
}

void RenderingDeviceVulkan::draw_list_set_push_constant(DrawListID p_list, void *p_data, uint32_t p_data_size) {
	DrawList *dl = _get_draw_list_ptr(p_list);
	ERR_FAIL_COND(!dl);

#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(!dl->validation.active, "Submitted Draw Lists can no longer be modified.");
#endif

#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(p_data_size != dl->validation.pipeline_push_constant_size,
			"This render pipeline requires (" + itos(dl->validation.pipeline_push_constant_size) + ") bytes of push constant data, supplied: (" + itos(p_data_size) + ")");
#endif
	vkCmdPushConstants(dl->command_buffer, dl->state.pipeline_layout, dl->state.pipeline_push_constant_stages, 0, p_data_size, p_data);
#ifdef DEBUG_ENABLED
	dl->validation.pipeline_push_constant_suppplied = true;
#endif
}

void RenderingDeviceVulkan::draw_list_draw(DrawListID p_list, bool p_use_indices, uint32_t p_instances, uint32_t p_procedural_vertices) {

	DrawList *dl = _get_draw_list_ptr(p_list);
	ERR_FAIL_COND(!dl);
#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(!dl->validation.active, "Submitted Draw Lists can no longer be modified.");
#endif

#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(!dl->validation.pipeline_active,
			"No render pipeline was set before attempting to draw.");
	if (dl->validation.pipeline_vertex_format != INVALID_ID) {
		//pipeline uses vertices, validate format
		ERR_FAIL_COND_MSG(dl->validation.vertex_format == INVALID_ID,
				"No vertex array was bound, and render pipeline expects vertices.");
		//make sure format is right
		ERR_FAIL_COND_MSG(dl->validation.pipeline_vertex_format != dl->validation.vertex_format,
				"The vertex format used to create the pipeline does not match the vertex format bound.");
		//make sure amount of instances is valid
		ERR_FAIL_COND_MSG(p_instances > dl->validation.vertex_max_instances_allowed,
				"Amount of instances requested (" + itos(p_instances) + " is larger than the maximum amount suported by the bound vertex array (" + itos(dl->validation.vertex_max_instances_allowed) + ").");
	}

	if (dl->validation.pipeline_push_constant_size > 0) {
		//using push constants, check that they were supplied
		ERR_FAIL_COND_MSG(!dl->validation.pipeline_push_constant_suppplied,
				"The shader in this pipeline requires a push constant to be set before drawing, but it's not present.");
	}

#endif

	//Bind descriptor sets

	for (uint32_t i = 0; i < dl->state.set_count; i++) {

		if (dl->state.sets[i].pipeline_expected_format == 0) {
			continue; //nothing expected by this pipeline
		}
#ifdef DEBUG_ENABLED
		if (dl->state.sets[i].pipeline_expected_format != dl->state.sets[i].uniform_set_format) {

			if (dl->state.sets[i].uniform_set_format == 0) {
				ERR_FAIL_MSG("Uniforms were never supplied for set (" + itos(i) + ") at the time of drawing, which are required by the pipeline");
			} else if (uniform_set_owner.owns(dl->state.sets[i].uniform_set)) {
				UniformSet *us = uniform_set_owner.getornull(dl->state.sets[i].uniform_set);
				ERR_FAIL_MSG("Uniforms supplied for set (" + itos(i) + "):\n" + _shader_uniform_debug(us->shader_id, us->shader_set) + "\nare not the same format as required by the pipeline shader. Pipeline shader requires the following bindings:\n" + _shader_uniform_debug(dl->state.pipeline_shader));
			} else {
				ERR_FAIL_MSG("Uniforms supplied for set (" + itos(i) + ", which was was just freed) are not the same format as required by the pipeline shader. Pipeline shader requires the following bindings:\n" + _shader_uniform_debug(dl->state.pipeline_shader));
			}
		}
#endif
		if (!dl->state.sets[i].bound) {
			//All good, see if this requires re-binding
			vkCmdBindDescriptorSets(dl->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, dl->state.pipeline_layout, i, 1, &dl->state.sets[i].descriptor_set, 0, nullptr);
			dl->state.sets[i].bound = true;
		}
	}

	if (p_use_indices) {

#ifdef DEBUG_ENABLED
		ERR_FAIL_COND_MSG(p_procedural_vertices > 0,
				"Procedural vertices can't be used together with indices.");

		ERR_FAIL_COND_MSG(!dl->validation.index_array_size,
				"Draw command requested indices, but no index buffer was set.");

		if (dl->validation.pipeline_vertex_format != INVALID_ID) {
			//uses vertices, do some vertex validations
			ERR_FAIL_COND_MSG(dl->validation.vertex_array_size < dl->validation.index_array_max_index,
					"Index array references (max index: " + itos(dl->validation.index_array_max_index) + ") indices beyond the vertex array size (" + itos(dl->validation.vertex_array_size) + ").");
		}

		ERR_FAIL_COND_MSG(dl->validation.pipeline_uses_restart_indices != dl->validation.index_buffer_uses_restart_indices,
				"The usage of restart indices in index buffer does not match the render primitive in the pipeline.");
#endif
		uint32_t to_draw = dl->validation.index_array_size;

#ifdef DEBUG_ENABLED
		ERR_FAIL_COND_MSG(to_draw < dl->validation.pipeline_primitive_minimum,
				"Too few indices (" + itos(to_draw) + ") for the render primitive set in the render pipeline (" + itos(dl->validation.pipeline_primitive_minimum) + ").");

		ERR_FAIL_COND_MSG((to_draw % dl->validation.pipeline_primitive_divisor) != 0,
				"Index amount (" + itos(to_draw) + ") must be a multiple of the amount of indices required by the render primitive (" + itos(dl->validation.pipeline_primitive_divisor) + ").");
#endif
		vkCmdDrawIndexed(dl->command_buffer, to_draw, p_instances, dl->validation.index_array_offset, 0, 0);
	} else {

		uint32_t to_draw;

		if (p_procedural_vertices > 0) {
#ifdef DEBUG_ENABLED
			ERR_FAIL_COND_MSG(dl->validation.pipeline_vertex_format != INVALID_ID,
					"Procedural vertices requested, but pipeline expects a vertex array.");
#endif
			to_draw = p_procedural_vertices;
		} else {

#ifdef DEBUG_ENABLED
			ERR_FAIL_COND_MSG(dl->validation.pipeline_vertex_format == INVALID_ID,
					"Draw command lacks indices, but pipeline format does not use vertices.");
#endif
			to_draw = dl->validation.vertex_array_size;
		}

#ifdef DEBUG_ENABLED
		ERR_FAIL_COND_MSG(to_draw < dl->validation.pipeline_primitive_minimum,
				"Too few vertices (" + itos(to_draw) + ") for the render primitive set in the render pipeline (" + itos(dl->validation.pipeline_primitive_minimum) + ").");

		ERR_FAIL_COND_MSG((to_draw % dl->validation.pipeline_primitive_divisor) != 0,
				"Vertex amount (" + itos(to_draw) + ") must be a multiple of the amount of vertices required by the render primitive (" + itos(dl->validation.pipeline_primitive_divisor) + ").");
#endif

		vkCmdDraw(dl->command_buffer, to_draw, p_instances, 0, 0);
	}
}

void RenderingDeviceVulkan::draw_list_enable_scissor(DrawListID p_list, const Rect2 &p_rect) {
	DrawList *dl = _get_draw_list_ptr(p_list);

	ERR_FAIL_COND(!dl);
#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(!dl->validation.active, "Submitted Draw Lists can no longer be modified.");
#endif
	Rect2i rect = p_rect;
	rect.position += dl->viewport.position;

	rect = dl->viewport.clip(rect);

	if (rect.get_area() == 0) {
		return;
	}
	VkRect2D scissor;
	scissor.offset.x = rect.position.x;
	scissor.offset.y = rect.position.y;
	scissor.extent.width = rect.size.width;
	scissor.extent.height = rect.size.height;

	vkCmdSetScissor(dl->command_buffer, 0, 1, &scissor);
}
void RenderingDeviceVulkan::draw_list_disable_scissor(DrawListID p_list) {
	DrawList *dl = _get_draw_list_ptr(p_list);
	ERR_FAIL_COND(!dl);
#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(!dl->validation.active, "Submitted Draw Lists can no longer be modified.");
#endif

	VkRect2D scissor;
	scissor.offset.x = dl->viewport.position.x;
	scissor.offset.y = dl->viewport.position.y;
	scissor.extent.width = dl->viewport.size.width;
	scissor.extent.height = dl->viewport.size.height;
	vkCmdSetScissor(dl->command_buffer, 0, 1, &scissor);
}

void RenderingDeviceVulkan::draw_list_end() {

	_THREAD_SAFE_METHOD_

	ERR_FAIL_COND_MSG(!draw_list, "Immediate draw list is already inactive.");

	if (draw_list_split) {
		//send all command buffers
		VkCommandBuffer *command_buffers = (VkCommandBuffer *)alloca(sizeof(VkCommandBuffer) * draw_list_count);
		for (uint32_t i = 0; i < draw_list_count; i++) {
			vkEndCommandBuffer(draw_list->command_buffer);
			command_buffers[i] = draw_list->command_buffer;
		}

		vkCmdExecuteCommands(frames[frame].draw_command_buffer, draw_list_count, command_buffers);
		vkCmdEndRenderPass(frames[frame].draw_command_buffer);
		memdelete_arr(draw_list);
		draw_list = nullptr;

	} else {
		//just end the list
		vkCmdEndRenderPass(draw_list->command_buffer);
		memdelete(draw_list);
		draw_list = nullptr;
	}

	for (int i = 0; i < draw_list_bound_textures.size(); i++) {
		Texture *texture = texture_owner.getornull(draw_list_bound_textures[i]);
		ERR_CONTINUE(!texture); //wtf
		if (draw_list_unbind_color_textures && (texture->usage_flags & TEXTURE_USAGE_COLOR_ATTACHMENT_BIT)) {
			texture->bound = false;
		}
		if (draw_list_unbind_depth_textures && (texture->usage_flags & TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT)) {
			texture->bound = false;
		}
	}

	draw_list_bound_textures.clear();

	// To ensure proper synchronization, we must make sure rendering is done before:
	//  * Some buffer is copied
	//  * Another render pass happens (since we may be done

#ifdef FORCE_FULL_BARRIER
	_full_barrier(true);
#else
	_memory_barrier(VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT | VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT, VK_PIPELINE_STAGE_VERTEX_INPUT_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT | VK_PIPELINE_STAGE_TRANSFER_BIT, VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT, VK_ACCESS_INDEX_READ_BIT | VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT | VK_ACCESS_TRANSFER_READ_BIT | VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_SHADER_WRITE_BIT, true);
#endif
}

/***********************/
/**** COMPUTE LISTS ****/
/***********************/

RenderingDevice::ComputeListID RenderingDeviceVulkan::compute_list_begin() {

	ERR_FAIL_COND_V_MSG(draw_list != nullptr, INVALID_ID, "Only one draw list can be active at the same time.");
	ERR_FAIL_COND_V_MSG(compute_list != nullptr, INVALID_ID, "Only one draw/compute list can be active at the same time.");

	compute_list = memnew(ComputeList);
	compute_list->command_buffer = frames[frame].draw_command_buffer;

	return ID_TYPE_COMPUTE_LIST;
}

void RenderingDeviceVulkan::compute_list_bind_compute_pipeline(ComputeListID p_list, RID p_compute_pipeline) {
	ERR_FAIL_COND(p_list != ID_TYPE_COMPUTE_LIST);
	ERR_FAIL_COND(!compute_list);

	ComputeList *cl = compute_list;

	const ComputePipeline *pipeline = compute_pipeline_owner.getornull(p_compute_pipeline);
	ERR_FAIL_COND(!pipeline);

	if (p_compute_pipeline == cl->state.pipeline) {
		return; //redundant state, return.
	}

	cl->state.pipeline = p_compute_pipeline;
	cl->state.pipeline_layout = pipeline->pipeline_layout;

	vkCmdBindPipeline(cl->command_buffer, VK_PIPELINE_BIND_POINT_COMPUTE, pipeline->pipeline);

	if (cl->state.pipeline_shader != pipeline->shader) {
		// shader changed, so descriptor sets may become incompatible.

		//go through ALL sets, and unbind them (and all those above) if the format is different

		uint32_t pcount = pipeline->set_formats.size(); //formats count in this pipeline
		cl->state.set_count = MAX(cl->state.set_count, pcount);
		const uint32_t *pformats = pipeline->set_formats.ptr(); //pipeline set formats

		bool sets_valid = true; //once invalid, all above become invalid
		for (uint32_t i = 0; i < pcount; i++) {
			//if a part of the format is different, invalidate it (and the rest)
			if (!sets_valid || cl->state.sets[i].pipeline_expected_format != pformats[i]) {
				cl->state.sets[i].bound = false;
				cl->state.sets[i].pipeline_expected_format = pformats[i];
				sets_valid = false;
			}
		}

		for (uint32_t i = pcount; i < cl->state.set_count; i++) {
			//unbind the ones above (not used) if exist
			cl->state.sets[i].bound = false;
		}

		cl->state.set_count = pcount; //update set count

		if (pipeline->push_constant_size) {
			cl->state.pipeline_push_constant_stages = pipeline->push_constant_stages;
#ifdef DEBUG_ENABLED
			cl->validation.pipeline_push_constant_suppplied = false;
#endif
		}

		cl->state.pipeline_shader = pipeline->shader;
	}

#ifdef DEBUG_ENABLED
	//update compute pass pipeline info
	cl->validation.pipeline_active = true;
	cl->validation.pipeline_push_constant_size = pipeline->push_constant_size;
#endif
}
void RenderingDeviceVulkan::compute_list_bind_uniform_set(ComputeListID p_list, RID p_uniform_set, uint32_t p_index) {
	ERR_FAIL_COND(p_list != ID_TYPE_COMPUTE_LIST);
	ERR_FAIL_COND(!compute_list);

	ComputeList *cl = compute_list;

#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(p_index >= limits.maxBoundDescriptorSets || p_index > MAX_UNIFORM_SETS,
			"Attempting to bind a descriptor set (" + itos(p_index) + ") greater than what the hardware supports (" + itos(limits.maxBoundDescriptorSets) + ").");
#endif

#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(!cl->validation.active, "Submitted Compute Lists can no longer be modified.");
#endif

	UniformSet *uniform_set = uniform_set_owner.getornull(p_uniform_set);
	ERR_FAIL_COND(!uniform_set);

	if (p_index > cl->state.set_count) {
		cl->state.set_count = p_index;
	}

	cl->state.sets[p_index].descriptor_set = uniform_set->descriptor_set; //update set pointer
	cl->state.sets[p_index].bound = false; //needs rebind
	cl->state.sets[p_index].uniform_set_format = uniform_set->format;
	cl->state.sets[p_index].uniform_set = p_uniform_set;

	uint32_t textures_to_sampled_count = uniform_set->mutable_sampled_textures.size();
	Texture **textures_to_sampled = uniform_set->mutable_sampled_textures.ptrw();

	for (uint32_t i = 0; i < textures_to_sampled_count; i++) {
		if (textures_to_sampled[i]->layout != VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL) {

			VkImageMemoryBarrier image_memory_barrier;
			image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
			image_memory_barrier.pNext = nullptr;
			image_memory_barrier.srcAccessMask = VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_SHADER_WRITE_BIT;
			image_memory_barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_SHADER_WRITE_BIT;
			image_memory_barrier.oldLayout = textures_to_sampled[i]->layout;
			image_memory_barrier.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;

			image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.image = textures_to_sampled[i]->image;
			image_memory_barrier.subresourceRange.aspectMask = textures_to_sampled[i]->read_aspect_mask;
			image_memory_barrier.subresourceRange.baseMipLevel = 0;
			image_memory_barrier.subresourceRange.levelCount = textures_to_sampled[i]->mipmaps;
			image_memory_barrier.subresourceRange.baseArrayLayer = 0;
			image_memory_barrier.subresourceRange.layerCount = textures_to_sampled[i]->layers;

			vkCmdPipelineBarrier(cl->command_buffer, VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0, 0, nullptr, 0, nullptr, 1, &image_memory_barrier);

			textures_to_sampled[i]->layout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;

			cl->state.textures_to_sampled_layout.erase(textures_to_sampled[i]);
		}
	}

	uint32_t textures_to_storage_count = uniform_set->mutable_storage_textures.size();
	Texture **textures_to_storage = uniform_set->mutable_storage_textures.ptrw();

	for (uint32_t i = 0; i < textures_to_storage_count; i++) {
		if (textures_to_storage[i]->layout != VK_IMAGE_LAYOUT_GENERAL) {

			VkImageMemoryBarrier image_memory_barrier;
			image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
			image_memory_barrier.pNext = nullptr;
			image_memory_barrier.srcAccessMask = VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_SHADER_WRITE_BIT;
			image_memory_barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_SHADER_WRITE_BIT;
			image_memory_barrier.oldLayout = textures_to_storage[i]->layout;
			image_memory_barrier.newLayout = VK_IMAGE_LAYOUT_GENERAL;

			image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
			image_memory_barrier.image = textures_to_storage[i]->image;
			image_memory_barrier.subresourceRange.aspectMask = textures_to_storage[i]->read_aspect_mask;
			image_memory_barrier.subresourceRange.baseMipLevel = 0;
			image_memory_barrier.subresourceRange.levelCount = textures_to_storage[i]->mipmaps;
			image_memory_barrier.subresourceRange.baseArrayLayer = 0;
			image_memory_barrier.subresourceRange.layerCount = textures_to_storage[i]->layers;

			vkCmdPipelineBarrier(cl->command_buffer, VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT | VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0, 0, nullptr, 0, nullptr, 1, &image_memory_barrier);

			textures_to_storage[i]->layout = VK_IMAGE_LAYOUT_GENERAL;

			cl->state.textures_to_sampled_layout.insert(textures_to_storage[i]); //needs to go back to sampled layout afterwards
		}
	}

#if 0
	{ //validate that textures bound are not attached as framebuffer bindings
		uint32_t attachable_count = uniform_set->attachable_textures.size();
		const RID *attachable_ptr = uniform_set->attachable_textures.ptr();
		uint32_t bound_count = draw_list_bound_textures.size();
		const RID *bound_ptr = draw_list_bound_textures.ptr();
		for (uint32_t i = 0; i < attachable_count; i++) {
			for (uint32_t j = 0; j < bound_count; j++) {
				ERR_FAIL_COND_MSG(attachable_ptr[i] == bound_ptr[j],
						"Attempted to use the same texture in framebuffer attachment and a uniform set, this is not allowed.");
			}
		}
	}
#endif
}

void RenderingDeviceVulkan::compute_list_set_push_constant(ComputeListID p_list, void *p_data, uint32_t p_data_size) {
	ERR_FAIL_COND(p_list != ID_TYPE_COMPUTE_LIST);
	ERR_FAIL_COND(!compute_list);

	ComputeList *cl = compute_list;

#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(!cl->validation.active, "Submitted Compute Lists can no longer be modified.");
#endif

#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(p_data_size != cl->validation.pipeline_push_constant_size,
			"This compute pipeline requires (" + itos(cl->validation.pipeline_push_constant_size) + ") bytes of push constant data, supplied: (" + itos(p_data_size) + ")");
#endif
	vkCmdPushConstants(cl->command_buffer, cl->state.pipeline_layout, cl->state.pipeline_push_constant_stages, 0, p_data_size, p_data);
#ifdef DEBUG_ENABLED
	cl->validation.pipeline_push_constant_suppplied = true;
#endif
}
void RenderingDeviceVulkan::compute_list_dispatch(ComputeListID p_list, uint32_t p_x_groups, uint32_t p_y_groups, uint32_t p_z_groups) {
	ERR_FAIL_COND(p_list != ID_TYPE_COMPUTE_LIST);
	ERR_FAIL_COND(!compute_list);

	ComputeList *cl = compute_list;

#ifdef DEBUG_ENABLED
	ERR_FAIL_COND_MSG(p_x_groups > limits.maxComputeWorkGroupCount[0],
			"Dispatch amount of X compute groups (" + itos(p_x_groups) + ") is larger than device limit (" + itos(limits.maxComputeWorkGroupCount[0]) + ")");
	ERR_FAIL_COND_MSG(p_y_groups > limits.maxComputeWorkGroupCount[1],
			"Dispatch amount of Y compute groups (" + itos(p_x_groups) + ") is larger than device limit (" + itos(limits.maxComputeWorkGroupCount[0]) + ")");
	ERR_FAIL_COND_MSG(p_z_groups > limits.maxComputeWorkGroupCount[2],
			"Dispatch amount of Z compute groups (" + itos(p_x_groups) + ") is larger than device limit (" + itos(limits.maxComputeWorkGroupCount[0]) + ")");

	ERR_FAIL_COND_MSG(!cl->validation.active, "Submitted Compute Lists can no longer be modified.");
#endif

#ifdef DEBUG_ENABLED

	ERR_FAIL_COND_MSG(!cl->validation.pipeline_active, "No compute pipeline was set before attempting to draw.");

	if (cl->validation.pipeline_push_constant_size > 0) {
		//using push constants, check that they were supplied
		ERR_FAIL_COND_MSG(!cl->validation.pipeline_push_constant_suppplied,
				"The shader in this pipeline requires a push constant to be set before drawing, but it's not present.");
	}

#endif

	//Bind descriptor sets

	for (uint32_t i = 0; i < cl->state.set_count; i++) {

		if (cl->state.sets[i].pipeline_expected_format == 0) {
			continue; //nothing expected by this pipeline
		}
#ifdef DEBUG_ENABLED
		if (cl->state.sets[i].pipeline_expected_format != cl->state.sets[i].uniform_set_format) {

			if (cl->state.sets[i].uniform_set_format == 0) {
				ERR_FAIL_MSG("Uniforms were never supplied for set (" + itos(i) + ") at the time of drawing, which are required by the pipeline");
			} else if (uniform_set_owner.owns(cl->state.sets[i].uniform_set)) {
				UniformSet *us = uniform_set_owner.getornull(cl->state.sets[i].uniform_set);
				ERR_FAIL_MSG("Uniforms supplied for set (" + itos(i) + "):\n" + _shader_uniform_debug(us->shader_id, us->shader_set) + "\nare not the same format as required by the pipeline shader. Pipeline shader requires the following bindings:\n" + _shader_uniform_debug(cl->state.pipeline_shader));
			} else {
				ERR_FAIL_MSG("Uniforms supplied for set (" + itos(i) + ", which was was just freed) are not the same format as required by the pipeline shader. Pipeline shader requires the following bindings:\n" + _shader_uniform_debug(cl->state.pipeline_shader));
			}
		}
#endif
		if (!cl->state.sets[i].bound) {
			//All good, see if this requires re-binding
			vkCmdBindDescriptorSets(cl->command_buffer, VK_PIPELINE_BIND_POINT_COMPUTE, cl->state.pipeline_layout, i, 1, &cl->state.sets[i].descriptor_set, 0, nullptr);
			cl->state.sets[i].bound = true;
		}
	}

	vkCmdDispatch(cl->command_buffer, p_x_groups, p_y_groups, p_z_groups);
}

void RenderingDeviceVulkan::compute_list_add_barrier(ComputeListID p_list) {
#ifdef FORCE_FULL_BARRIER
	_full_barrier(true);
#else
	_memory_barrier(VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, VK_ACCESS_SHADER_WRITE_BIT, VK_ACCESS_SHADER_READ_BIT, true);
#endif
}

void RenderingDeviceVulkan::compute_list_end() {
	ERR_FAIL_COND(!compute_list);

	for (Set<Texture *>::Element *E = compute_list->state.textures_to_sampled_layout.front(); E; E = E->next()) {

		VkImageMemoryBarrier image_memory_barrier;
		image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
		image_memory_barrier.pNext = nullptr;
		image_memory_barrier.srcAccessMask = VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_SHADER_WRITE_BIT;
		image_memory_barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
		image_memory_barrier.oldLayout = E->get()->layout;
		image_memory_barrier.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;

		image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		image_memory_barrier.image = E->get()->image;
		image_memory_barrier.subresourceRange.aspectMask = E->get()->read_aspect_mask;
		image_memory_barrier.subresourceRange.baseMipLevel = 0;
		image_memory_barrier.subresourceRange.levelCount = E->get()->mipmaps;
		image_memory_barrier.subresourceRange.baseArrayLayer = 0;
		image_memory_barrier.subresourceRange.layerCount = E->get()->layers;

		vkCmdPipelineBarrier(compute_list->command_buffer, VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0, 0, nullptr, 0, nullptr, 1, &image_memory_barrier);

		E->get()->layout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
	}

	memdelete(compute_list);
	compute_list = nullptr;
#ifdef FORCE_FULL_BARRIER
	_full_barrier(true);
#else
	_memory_barrier(VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, VK_PIPELINE_STAGE_VERTEX_INPUT_BIT | VK_PIPELINE_STAGE_TRANSFER_BIT, VK_ACCESS_SHADER_WRITE_BIT, VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT | VK_ACCESS_INDEX_READ_BIT | VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT | VK_ACCESS_TRANSFER_READ_BIT, true);
#endif
}

#if 0
void RenderingDeviceVulkan::draw_list_render_secondary_to_framebuffer(ID p_framebuffer, ID *p_draw_lists, uint32_t p_draw_list_count, InitialAction p_initial_action, FinalAction p_final_action, const Vector<Variant> &p_clear_colors) {

	VkCommandBuffer frame_cmdbuf = frames[frame].frame_buffer;
	ERR_FAIL_COND(!frame_cmdbuf);

	VkRenderPassBeginInfo render_pass_begin;
	render_pass_begin.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
	render_pass_begin.pNext = nullptr;
	render_pass_begin.renderPass = context->get_render_pass();
	render_pass_begin.framebuffer = context->get_frame_framebuffer(frame);

	render_pass_begin.renderArea.extent.width = context->get_screen_width(p_screen);
	render_pass_begin.renderArea.extent.height = context->get_screen_height(p_screen);
	render_pass_begin.renderArea.offset.x = 0;
	render_pass_begin.renderArea.offset.y = 0;

	render_pass_begin.clearValueCount = 1;

	VkClearValue clear_value;
	clear_value.color.float32[0] = p_clear_color.r;
	clear_value.color.float32[1] = p_clear_color.g;
	clear_value.color.float32[2] = p_clear_color.b;
	clear_value.color.float32[3] = p_clear_color.a;

	render_pass_begin.pClearValues = &clear_value;

	vkCmdBeginRenderPass(frame_cmdbuf, &render_pass_begin, VK_SUBPASS_CONTENTS_SECONDARY_COMMAND_BUFFERS);

	ID screen_format = screen_get_framebuffer_format();
	{

		VkCommandBuffer *command_buffers = (VkCommandBuffer *)alloca(sizeof(VkCommandBuffer) * p_draw_list_count);
		uint32_t command_buffer_count = 0;

		for (uint32_t i = 0; i < p_draw_list_count; i++) {
			DrawList *dl = _get_draw_list_ptr(p_draw_lists[i]);
			ERR_CONTINUE_MSG(!dl, "Draw list index (" + itos(i) + ") is not a valid draw list ID.");
			ERR_CONTINUE_MSG(dl->validation.framebuffer_format != p_format_check,
					"Draw list index (" + itos(i) + ") is created with a framebuffer format incompatible with this render pass.");

			if (dl->validation.active) {
				//needs to be closed, so close it.
				vkEndCommandBuffer(dl->command_buffer);
				dl->validation.active = false;
			}

			command_buffers[command_buffer_count++] = dl->command_buffer;
		}

		print_line("to draw: " + itos(command_buffer_count));
		vkCmdExecuteCommands(p_primary, command_buffer_count, command_buffers);
	}

	vkCmdEndRenderPass(frame_cmdbuf);

}
#endif

void RenderingDeviceVulkan::_free_internal(RID p_id) {

	//push everything so it's disposed of next time this frame index is processed (means, it's safe to do it)
	if (texture_owner.owns(p_id)) {
		Texture *texture = texture_owner.getornull(p_id);
		frames[frame].textures_to_dispose_of.push_back(*texture);
		texture_owner.free(p_id);
	} else if (framebuffer_owner.owns(p_id)) {
		Framebuffer *framebuffer = framebuffer_owner.getornull(p_id);
		frames[frame].framebuffers_to_dispose_of.push_back(*framebuffer);
		framebuffer_owner.free(p_id);
	} else if (sampler_owner.owns(p_id)) {
		VkSampler *sampler = sampler_owner.getornull(p_id);
		frames[frame].samplers_to_dispose_of.push_back(*sampler);
		sampler_owner.free(p_id);
	} else if (vertex_buffer_owner.owns(p_id)) {
		Buffer *vertex_buffer = vertex_buffer_owner.getornull(p_id);
		frames[frame].buffers_to_dispose_of.push_back(*vertex_buffer);
		vertex_buffer_owner.free(p_id);
	} else if (vertex_array_owner.owns(p_id)) {
		vertex_array_owner.free(p_id);
	} else if (index_buffer_owner.owns(p_id)) {
		IndexBuffer *index_buffer = index_buffer_owner.getornull(p_id);
		Buffer b;
		b.allocation = index_buffer->allocation;
		b.buffer = index_buffer->buffer;
		b.size = index_buffer->size;
		frames[frame].buffers_to_dispose_of.push_back(b);
		index_buffer_owner.free(p_id);
	} else if (index_array_owner.owns(p_id)) {
		index_array_owner.free(p_id);
	} else if (shader_owner.owns(p_id)) {
		Shader *shader = shader_owner.getornull(p_id);
		frames[frame].shaders_to_dispose_of.push_back(*shader);
		shader_owner.free(p_id);
	} else if (uniform_buffer_owner.owns(p_id)) {
		Buffer *uniform_buffer = uniform_buffer_owner.getornull(p_id);
		frames[frame].buffers_to_dispose_of.push_back(*uniform_buffer);
		uniform_buffer_owner.free(p_id);
	} else if (texture_buffer_owner.owns(p_id)) {
		TextureBuffer *texture_buffer = texture_buffer_owner.getornull(p_id);
		frames[frame].buffers_to_dispose_of.push_back(texture_buffer->buffer);
		frames[frame].buffer_views_to_dispose_of.push_back(texture_buffer->view);
		texture_buffer_owner.free(p_id);
	} else if (storage_buffer_owner.owns(p_id)) {
		Buffer *storage_buffer = storage_buffer_owner.getornull(p_id);
		frames[frame].buffers_to_dispose_of.push_back(*storage_buffer);
		storage_buffer_owner.free(p_id);
	} else if (uniform_set_owner.owns(p_id)) {
		UniformSet *uniform_set = uniform_set_owner.getornull(p_id);
		frames[frame].uniform_sets_to_dispose_of.push_back(*uniform_set);
		uniform_set_owner.free(p_id);
	} else if (render_pipeline_owner.owns(p_id)) {
		RenderPipeline *pipeline = render_pipeline_owner.getornull(p_id);
		frames[frame].render_pipelines_to_dispose_of.push_back(*pipeline);
		render_pipeline_owner.free(p_id);
	} else if (compute_pipeline_owner.owns(p_id)) {
		ComputePipeline *pipeline = compute_pipeline_owner.getornull(p_id);
		frames[frame].compute_pipelines_to_dispose_of.push_back(*pipeline);
		compute_pipeline_owner.free(p_id);
	} else {
		ERR_PRINT("Attempted to free invalid ID: " + itos(p_id.get_id()));
	}
}
void RenderingDeviceVulkan::free(RID p_id) {

	_THREAD_SAFE_METHOD_

	_free_dependencies(p_id); //recursively erase dependencies first, to avoid potential API problems
	_free_internal(p_id);
}
void RenderingDeviceVulkan::swap_buffers() {

	_THREAD_SAFE_METHOD_

	{ //finalize frame

		if (draw_list) {
			ERR_PRINT("Found open draw list at the end of the frame, this should never happen (further drawing will likely not work).");
		}

		if (compute_list) {
			ERR_PRINT("Found open compute list at the end of the frame, this should never happen (further compute will likely not work).");
		}

		{ //complete the setup buffer (that needs to be processed before anything else)
			vkEndCommandBuffer(frames[frame].setup_command_buffer);
			vkEndCommandBuffer(frames[frame].draw_command_buffer);
		}
		screen_prepared = false;
	}

	//swap buffers
	context->swap_buffers();

	{ //advance frame

		frame = (frame + 1) % frame_count;

		//erase pending resources
		_free_pending_resources(frame);

		//create setup command buffer and set as the setup buffer

		{
			VkCommandBufferBeginInfo cmdbuf_begin;
			cmdbuf_begin.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
			cmdbuf_begin.pNext = nullptr;
			cmdbuf_begin.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
			cmdbuf_begin.pInheritanceInfo = nullptr;

			VkResult err = vkResetCommandBuffer(frames[frame].setup_command_buffer, 0);
			ERR_FAIL_COND_MSG(err, "vkResetCommandBuffer failed with error " + itos(err) + ".");

			err = vkBeginCommandBuffer(frames[frame].setup_command_buffer, &cmdbuf_begin);
			ERR_FAIL_COND_MSG(err, "vkBeginCommandBuffer failed with error " + itos(err) + ".");
			context->set_setup_buffer(frames[frame].setup_command_buffer); //append now so it's added before everything else
			err = vkBeginCommandBuffer(frames[frame].draw_command_buffer, &cmdbuf_begin);
			ERR_FAIL_COND_MSG(err, "vkBeginCommandBuffer failed with error " + itos(err) + ".");
			context->append_command_buffer(frames[frame].draw_command_buffer);
		}

		//advance current frame
		frames_drawn++;
		//advance staging buffer if used
		if (staging_buffer_used) {
			staging_buffer_current = (staging_buffer_current + 1) % staging_buffer_blocks.size();
			staging_buffer_used = false;
		}

		if (frames[frame].timestamp_count) {
			vkGetQueryPoolResults(device, frames[frame].timestamp_pool, 0, frames[frame].timestamp_count, sizeof(uint64_t) * max_timestamp_query_elements, frames[frame].timestamp_result_values, sizeof(uint64_t), VK_QUERY_RESULT_64_BIT);
			SWAP(frames[frame].timestamp_names, frames[frame].timestamp_result_names);
			SWAP(frames[frame].timestamp_cpu_values, frames[frame].timestamp_cpu_result_values);
		}

		frames[frame].timestamp_result_count = frames[frame].timestamp_count;
		frames[frame].timestamp_count = 0;
		frames[frame].index = Engine::get_singleton()->get_frames_drawn();
	}
}

void RenderingDeviceVulkan::_free_pending_resources(int p_frame) {
	//free in dependency usage order, so nothing weird happens
	//pipelines
	while (frames[p_frame].render_pipelines_to_dispose_of.front()) {
		RenderPipeline *pipeline = &frames[p_frame].render_pipelines_to_dispose_of.front()->get();

		vkDestroyPipeline(device, pipeline->pipeline, nullptr);

		frames[p_frame].render_pipelines_to_dispose_of.pop_front();
	}

	while (frames[p_frame].compute_pipelines_to_dispose_of.front()) {
		ComputePipeline *pipeline = &frames[p_frame].compute_pipelines_to_dispose_of.front()->get();

		vkDestroyPipeline(device, pipeline->pipeline, nullptr);

		frames[p_frame].compute_pipelines_to_dispose_of.pop_front();
	}

	//uniform sets
	while (frames[p_frame].uniform_sets_to_dispose_of.front()) {
		UniformSet *uniform_set = &frames[p_frame].uniform_sets_to_dispose_of.front()->get();

		vkFreeDescriptorSets(device, uniform_set->pool->pool, 1, &uniform_set->descriptor_set);
		_descriptor_pool_free(uniform_set->pool_key, uniform_set->pool);

		frames[p_frame].uniform_sets_to_dispose_of.pop_front();
	}

	//buffer views
	while (frames[p_frame].buffer_views_to_dispose_of.front()) {
		VkBufferView buffer_view = frames[p_frame].buffer_views_to_dispose_of.front()->get();

		vkDestroyBufferView(device, buffer_view, nullptr);

		frames[p_frame].buffer_views_to_dispose_of.pop_front();
	}

	//shaders
	while (frames[p_frame].shaders_to_dispose_of.front()) {
		Shader *shader = &frames[p_frame].shaders_to_dispose_of.front()->get();

		//descriptor set layout for each set
		for (int i = 0; i < shader->sets.size(); i++) {
			vkDestroyDescriptorSetLayout(device, shader->sets[i].descriptor_set_layout, nullptr);
		}

		//pipeline layout
		vkDestroyPipelineLayout(device, shader->pipeline_layout, nullptr);

		//shaders themselves
		for (int i = 0; i < shader->pipeline_stages.size(); i++) {
			vkDestroyShaderModule(device, shader->pipeline_stages[i].module, nullptr);
		}

		frames[p_frame].shaders_to_dispose_of.pop_front();
	}

	//samplers
	while (frames[p_frame].samplers_to_dispose_of.front()) {
		VkSampler sampler = frames[p_frame].samplers_to_dispose_of.front()->get();

		vkDestroySampler(device, sampler, nullptr);

		frames[p_frame].samplers_to_dispose_of.pop_front();
	}

	//framebuffers
	while (frames[p_frame].framebuffers_to_dispose_of.front()) {
		Framebuffer *framebuffer = &frames[p_frame].framebuffers_to_dispose_of.front()->get();

		for (Map<Framebuffer::VersionKey, Framebuffer::Version>::Element *E = framebuffer->framebuffers.front(); E; E = E->next()) {
			//first framebuffer, then render pass because it depends on it
			vkDestroyFramebuffer(device, E->get().framebuffer, nullptr);
			vkDestroyRenderPass(device, E->get().render_pass, nullptr);
		}

		frames[p_frame].framebuffers_to_dispose_of.pop_front();
	}

	//textures
	while (frames[p_frame].textures_to_dispose_of.front()) {
		Texture *texture = &frames[p_frame].textures_to_dispose_of.front()->get();

		if (texture->bound) {
			WARN_PRINT("Deleted a texture while it was bound..");
		}
		vkDestroyImageView(device, texture->view, nullptr);
		if (texture->owner.is_null()) {
			//actually owns the image and the allocation too
			vmaDestroyImage(allocator, texture->image, texture->allocation);
		}
		frames[p_frame].textures_to_dispose_of.pop_front();
	}

	//buffers
	while (frames[p_frame].buffers_to_dispose_of.front()) {

		_buffer_free(&frames[p_frame].buffers_to_dispose_of.front()->get());

		frames[p_frame].buffers_to_dispose_of.pop_front();
	}
}

void RenderingDeviceVulkan::prepare_screen_for_drawing() {
	_THREAD_SAFE_METHOD_
	context->prepare_buffers();
	screen_prepared = true;
}

uint32_t RenderingDeviceVulkan::get_frame_delay() const {
	return frame_count;
}

void RenderingDeviceVulkan::_flush(bool p_current_frame) {

	//not doing this crashes RADV (undefined behavior)
	if (p_current_frame) {
		vkEndCommandBuffer(frames[frame].setup_command_buffer);
		vkEndCommandBuffer(frames[frame].draw_command_buffer);
	}
	context->flush(p_current_frame, p_current_frame);
	//re-create the setup command
	if (p_current_frame) {
		VkCommandBufferBeginInfo cmdbuf_begin;
		cmdbuf_begin.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
		cmdbuf_begin.pNext = nullptr;
		cmdbuf_begin.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
		cmdbuf_begin.pInheritanceInfo = nullptr;

		VkResult err = vkBeginCommandBuffer(frames[frame].setup_command_buffer, &cmdbuf_begin);
		ERR_FAIL_COND_MSG(err, "vkBeginCommandBuffer failed with error " + itos(err) + ".");
		context->set_setup_buffer(frames[frame].setup_command_buffer); //append now so it's added before everything else
	}

	if (p_current_frame) {
		VkCommandBufferBeginInfo cmdbuf_begin;
		cmdbuf_begin.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
		cmdbuf_begin.pNext = nullptr;
		cmdbuf_begin.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
		cmdbuf_begin.pInheritanceInfo = nullptr;

		VkResult err = vkBeginCommandBuffer(frames[frame].draw_command_buffer, &cmdbuf_begin);
		ERR_FAIL_COND_MSG(err, "vkBeginCommandBuffer failed with error " + itos(err) + ".");
		context->append_command_buffer(frames[frame].draw_command_buffer);
	}
}

void RenderingDeviceVulkan::initialize(VulkanContext *p_context) {

	context = p_context;
	device = p_context->get_device();
	frame_count = p_context->get_swapchain_image_count() + 1; //always need one extra to ensure it's unused at any time, without having to use a fence for this.
	limits = p_context->get_device_limits();
	max_timestamp_query_elements = 256;

	{ //initialize allocator

		VmaAllocatorCreateInfo allocatorInfo;
		memset(&allocatorInfo, 0, sizeof(VmaAllocatorCreateInfo));
		allocatorInfo.physicalDevice = p_context->get_physical_device();
		allocatorInfo.device = device;
		vmaCreateAllocator(&allocatorInfo, &allocator);
	}

	frames = memnew_arr(Frame, frame_count);
	frame = 0;
	//create setup and frame buffers
	for (int i = 0; i < frame_count; i++) {

		frames[i].index = 0;

		{ //create command pool, one per frame is recommended
			VkCommandPoolCreateInfo cmd_pool_info;
			cmd_pool_info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
			cmd_pool_info.pNext = nullptr;
			cmd_pool_info.queueFamilyIndex = p_context->get_graphics_queue();
			cmd_pool_info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;

			VkResult res = vkCreateCommandPool(device, &cmd_pool_info, nullptr, &frames[i].command_pool);
			ERR_FAIL_COND_MSG(res, "vkCreateCommandPool failed with error " + itos(res) + ".");
		}

		{ //create command buffers

			VkCommandBufferAllocateInfo cmdbuf;
			//no command buffer exists, create it.
			cmdbuf.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
			cmdbuf.pNext = nullptr;
			cmdbuf.commandPool = frames[i].command_pool;
			cmdbuf.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
			cmdbuf.commandBufferCount = 1;

			VkResult err = vkAllocateCommandBuffers(device, &cmdbuf, &frames[i].setup_command_buffer);
			ERR_CONTINUE_MSG(err, "vkAllocateCommandBuffers failed with error " + itos(err) + ".");

			err = vkAllocateCommandBuffers(device, &cmdbuf, &frames[i].draw_command_buffer);
			ERR_CONTINUE_MSG(err, "vkAllocateCommandBuffers failed with error " + itos(err) + ".");
		}

		{
			//create query pool
			VkQueryPoolCreateInfo query_pool_create_info;
			query_pool_create_info.sType = VK_STRUCTURE_TYPE_QUERY_POOL_CREATE_INFO;
			query_pool_create_info.flags = 0;
			query_pool_create_info.pNext = nullptr;
			query_pool_create_info.queryType = VK_QUERY_TYPE_TIMESTAMP;
			query_pool_create_info.queryCount = max_timestamp_query_elements;
			query_pool_create_info.pipelineStatistics = 0;

			vkCreateQueryPool(device, &query_pool_create_info, nullptr, &frames[i].timestamp_pool);

			frames[i].timestamp_names = memnew_arr(String, max_timestamp_query_elements);
			frames[i].timestamp_cpu_values = memnew_arr(uint64_t, max_timestamp_query_elements);
			frames[i].timestamp_count = 0;
			frames[i].timestamp_result_names = memnew_arr(String, max_timestamp_query_elements);
			frames[i].timestamp_cpu_result_values = memnew_arr(uint64_t, max_timestamp_query_elements);
			frames[i].timestamp_result_values = memnew_arr(uint64_t, max_timestamp_query_elements);
			frames[i].timestamp_result_count = 0;
		}
	}

	{
		//begin the first command buffer for the first frame, so
		//setting up things can be done in the meantime until swap_buffers(), which is called before advance.
		VkCommandBufferBeginInfo cmdbuf_begin;
		cmdbuf_begin.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
		cmdbuf_begin.pNext = nullptr;
		cmdbuf_begin.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
		cmdbuf_begin.pInheritanceInfo = nullptr;

		VkResult err = vkBeginCommandBuffer(frames[0].setup_command_buffer, &cmdbuf_begin);
		ERR_FAIL_COND_MSG(err, "vkBeginCommandBuffer failed with error " + itos(err) + ".");
		context->set_setup_buffer(frames[0].setup_command_buffer); //append now so it's added before everything else

		err = vkBeginCommandBuffer(frames[0].draw_command_buffer, &cmdbuf_begin);
		ERR_FAIL_COND_MSG(err, "vkBeginCommandBuffer failed with error " + itos(err) + ".");
		context->append_command_buffer(frames[0].draw_command_buffer);
	}

	staging_buffer_block_size = GLOBAL_DEF("rendering/vulkan/staging_buffer/block_size_kb", 256);
	staging_buffer_block_size = MAX(4, staging_buffer_block_size);
	staging_buffer_block_size *= 1024; //kb -> bytes
	staging_buffer_max_size = GLOBAL_DEF("rendering/vulkan/staging_buffer/max_size_mb", 128);
	staging_buffer_max_size = MAX(1, staging_buffer_max_size);
	staging_buffer_max_size *= 1024 * 1024;

	if (staging_buffer_max_size < staging_buffer_block_size * 4) {
		//validate enough blocks
		staging_buffer_max_size = staging_buffer_block_size * 4;
	}
	texture_upload_region_size_px = GLOBAL_DEF("rendering/vulkan/staging_buffer/texture_upload_region_size_px", 64);
	texture_upload_region_size_px = nearest_power_of_2_templated(texture_upload_region_size_px);

	frames_drawn = frame_count; //start from frame count, so everything else is immediately old

	//ensure current staging block is valid and at least one per frame exists
	staging_buffer_current = 0;
	staging_buffer_used = false;

	for (int i = 0; i < frame_count; i++) {
		//staging was never used, create a block
		Error err = _insert_staging_block();
		ERR_CONTINUE(err != OK);
	}

	max_descriptors_per_pool = GLOBAL_DEF("rendering/vulkan/descriptor_pools/max_descriptors_per_pool", 64);

	//check to make sure DescriptorPoolKey is good
	static_assert(sizeof(uint64_t) * 3 >= UNIFORM_TYPE_MAX * sizeof(uint16_t));

	draw_list = nullptr;
	draw_list_count = 0;
	draw_list_split = false;

	compute_list = nullptr;
}

template <class T>
void RenderingDeviceVulkan::_free_rids(T &p_owner, const char *p_type) {
	List<RID> owned;
	p_owner.get_owned_list(&owned);
	if (owned.size()) {
		WARN_PRINT(itos(owned.size()) + " RIDs of type '" + p_type + "' were leaked.");
		for (List<RID>::Element *E = owned.front(); E; E = E->next()) {
			free(E->get());
		}
	}
}

void RenderingDeviceVulkan::capture_timestamp(const String &p_name, bool p_sync_to_draw) {

	ERR_FAIL_COND(frames[frame].timestamp_count >= max_timestamp_query_elements);

	{
		VkMemoryBarrier memoryBarrier;

		memoryBarrier.sType = VK_STRUCTURE_TYPE_MEMORY_BARRIER;
		memoryBarrier.pNext = nullptr;
		memoryBarrier.srcAccessMask = VK_ACCESS_INDIRECT_COMMAND_READ_BIT |
									  VK_ACCESS_INDEX_READ_BIT |
									  VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT |
									  VK_ACCESS_UNIFORM_READ_BIT |
									  VK_ACCESS_INPUT_ATTACHMENT_READ_BIT |
									  VK_ACCESS_SHADER_READ_BIT |
									  VK_ACCESS_SHADER_WRITE_BIT |
									  VK_ACCESS_COLOR_ATTACHMENT_READ_BIT |
									  VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT |
									  VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT |
									  VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT |
									  VK_ACCESS_TRANSFER_READ_BIT |
									  VK_ACCESS_TRANSFER_WRITE_BIT |
									  VK_ACCESS_HOST_READ_BIT |
									  VK_ACCESS_HOST_WRITE_BIT;
		memoryBarrier.dstAccessMask = VK_ACCESS_INDIRECT_COMMAND_READ_BIT |
									  VK_ACCESS_INDEX_READ_BIT |
									  VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT |
									  VK_ACCESS_UNIFORM_READ_BIT |
									  VK_ACCESS_INPUT_ATTACHMENT_READ_BIT |
									  VK_ACCESS_SHADER_READ_BIT |
									  VK_ACCESS_SHADER_WRITE_BIT |
									  VK_ACCESS_COLOR_ATTACHMENT_READ_BIT |
									  VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT |
									  VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT |
									  VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT |
									  VK_ACCESS_TRANSFER_READ_BIT |
									  VK_ACCESS_TRANSFER_WRITE_BIT |
									  VK_ACCESS_HOST_READ_BIT |
									  VK_ACCESS_HOST_WRITE_BIT;

		vkCmdPipelineBarrier(p_sync_to_draw ? frames[frame].draw_command_buffer : frames[frame].setup_command_buffer, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, 0, 1, &memoryBarrier, 0, nullptr, 0, nullptr);
	}
	vkCmdWriteTimestamp(p_sync_to_draw ? frames[frame].draw_command_buffer : frames[frame].setup_command_buffer, VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT, frames[frame].timestamp_pool, frames[frame].timestamp_count);
	frames[frame].timestamp_names[frames[frame].timestamp_count] = p_name;
	frames[frame].timestamp_cpu_values[frames[frame].timestamp_count] = OS::get_singleton()->get_ticks_usec();
	frames[frame].timestamp_count++;
}

uint32_t RenderingDeviceVulkan::get_captured_timestamps_count() const {
	return frames[frame].timestamp_result_count;
}

uint64_t RenderingDeviceVulkan::get_captured_timestamps_frame() const {
	return frames[frame].index;
}

uint64_t RenderingDeviceVulkan::get_captured_timestamp_gpu_time(uint32_t p_index) const {
	ERR_FAIL_UNSIGNED_INDEX_V(p_index, frames[frame].timestamp_result_count, 0);
	return frames[frame].timestamp_result_values[p_index] * limits.timestampPeriod;
}
uint64_t RenderingDeviceVulkan::get_captured_timestamp_cpu_time(uint32_t p_index) const {
	ERR_FAIL_UNSIGNED_INDEX_V(p_index, frames[frame].timestamp_result_count, 0);
	return frames[frame].timestamp_cpu_result_values[p_index];
}
String RenderingDeviceVulkan::get_captured_timestamp_name(uint32_t p_index) const {
	ERR_FAIL_UNSIGNED_INDEX_V(p_index, frames[frame].timestamp_result_count, String());
	return frames[frame].timestamp_result_names[p_index];
}

int RenderingDeviceVulkan::limit_get(Limit p_limit) {
	switch (p_limit) {
		case LIMIT_MAX_BOUND_UNIFORM_SETS: return limits.maxBoundDescriptorSets;
		case LIMIT_MAX_FRAMEBUFFER_COLOR_ATTACHMENTS: return limits.maxColorAttachments;
		case LIMIT_MAX_TEXTURES_PER_UNIFORM_SET: return limits.maxDescriptorSetSampledImages;
		case LIMIT_MAX_SAMPLERS_PER_UNIFORM_SET: return limits.maxDescriptorSetSamplers;
		case LIMIT_MAX_STORAGE_BUFFERS_PER_UNIFORM_SET: return limits.maxDescriptorSetStorageBuffers;
		case LIMIT_MAX_STORAGE_IMAGES_PER_UNIFORM_SET: return limits.maxDescriptorSetStorageImages;
		case LIMIT_MAX_UNIFORM_BUFFERS_PER_UNIFORM_SET: return limits.maxDescriptorSetUniformBuffers;
		case LIMIT_MAX_DRAW_INDEXED_INDEX: return limits.maxDrawIndexedIndexValue;
		case LIMIT_MAX_FRAMEBUFFER_HEIGHT: return limits.maxFramebufferHeight;
		case LIMIT_MAX_FRAMEBUFFER_WIDTH: return limits.maxFramebufferWidth;
		case LIMIT_MAX_TEXTURE_ARRAY_LAYERS: return limits.maxImageArrayLayers;
		case LIMIT_MAX_TEXTURE_SIZE_1D: return limits.maxImageDimension1D;
		case LIMIT_MAX_TEXTURE_SIZE_2D: return limits.maxImageDimension2D;
		case LIMIT_MAX_TEXTURE_SIZE_3D: return limits.maxImageDimension3D;
		case LIMIT_MAX_TEXTURE_SIZE_CUBE: return limits.maxImageDimensionCube;
		case LIMIT_MAX_TEXTURES_PER_SHADER_STAGE: return limits.maxPerStageDescriptorSampledImages;
		case LIMIT_MAX_SAMPLERS_PER_SHADER_STAGE: return limits.maxPerStageDescriptorSamplers;
		case LIMIT_MAX_STORAGE_BUFFERS_PER_SHADER_STAGE: return limits.maxPerStageDescriptorStorageBuffers;
		case LIMIT_MAX_STORAGE_IMAGES_PER_SHADER_STAGE: return limits.maxPerStageDescriptorStorageImages;
		case LIMIT_MAX_UNIFORM_BUFFERS_PER_SHADER_STAGE: return limits.maxPerStageDescriptorUniformBuffers;
		case LIMIT_MAX_PUSH_CONSTANT_SIZE: return limits.maxPushConstantsSize;
		case LIMIT_MAX_UNIFORM_BUFFER_SIZE: return limits.maxUniformBufferRange;
		case LIMIT_MAX_VERTEX_INPUT_ATTRIBUTE_OFFSET: return limits.maxVertexInputAttributeOffset;
		case LIMIT_MAX_VERTEX_INPUT_ATTRIBUTES: return limits.maxVertexInputAttributes;
		case LIMIT_MAX_VERTEX_INPUT_BINDINGS: return limits.maxVertexInputBindings;
		case LIMIT_MAX_VERTEX_INPUT_BINDING_STRIDE: return limits.maxVertexInputBindingStride;
		case LIMIT_MIN_UNIFORM_BUFFER_OFFSET_ALIGNMENT: return limits.minUniformBufferOffsetAlignment;
		case LIMIT_MAX_COMPUTE_WORKGROUP_COUNT_X: return limits.maxComputeWorkGroupCount[0];
		case LIMIT_MAX_COMPUTE_WORKGROUP_COUNT_Y: return limits.maxComputeWorkGroupCount[1];
		case LIMIT_MAX_COMPUTE_WORKGROUP_COUNT_Z: return limits.maxComputeWorkGroupCount[2];
		case LIMIT_MAX_COMPUTE_WORKGROUP_INVOCATIONS: return limits.maxComputeWorkGroupInvocations;
		case LIMIT_MAX_COMPUTE_WORKGROUP_SIZE_X: return limits.maxComputeWorkGroupSize[0];
		case LIMIT_MAX_COMPUTE_WORKGROUP_SIZE_Y: return limits.maxComputeWorkGroupSize[1];
		case LIMIT_MAX_COMPUTE_WORKGROUP_SIZE_Z: return limits.maxComputeWorkGroupSize[2];

		default: ERR_FAIL_V(0);
	}

	return 0;
}

void RenderingDeviceVulkan::finalize() {

	//free all resources

	_flush(false);

	_free_rids(render_pipeline_owner, "Pipeline");
	_free_rids(compute_pipeline_owner, "Compute");
	_free_rids(uniform_set_owner, "UniformSet");
	_free_rids(texture_buffer_owner, "TextureBuffer");
	_free_rids(storage_buffer_owner, "StorageBuffer");
	_free_rids(uniform_buffer_owner, "UniformBuffer");
	_free_rids(shader_owner, "Shader");
	_free_rids(index_array_owner, "IndexArray");
	_free_rids(index_buffer_owner, "IndexBuffer");
	_free_rids(vertex_array_owner, "VertexArray");
	_free_rids(vertex_buffer_owner, "VertexBuffer");
	_free_rids(framebuffer_owner, "Framebuffer");
	_free_rids(sampler_owner, "Sampler");
	{
		//for textures it's a bit more difficult because they may be shared
		List<RID> owned;
		texture_owner.get_owned_list(&owned);
		if (owned.size()) {
			WARN_PRINT(itos(owned.size()) + " RIDs of type 'Texture' were leaked.");
			//free shared first
			for (List<RID>::Element *E = owned.front(); E;) {

				List<RID>::Element *N = E->next();
				if (texture_is_shared(E->get())) {
					free(E->get());
					owned.erase(E->get());
				}
				E = N;
			}
			//free non shared second, this will avoid an error trying to free unexisting textures due to dependencies.
			for (List<RID>::Element *E = owned.front(); E; E = E->next()) {
				free(E->get());
			}
		}
	}

	//free everything pending
	for (int i = 0; i < frame_count; i++) {
		int f = (frame + i) % frame_count;
		_free_pending_resources(f);
		vkDestroyCommandPool(device, frames[i].command_pool, nullptr);
		vkDestroyQueryPool(device, frames[i].timestamp_pool, nullptr);
		memdelete_arr(frames[i].timestamp_names);
		memdelete_arr(frames[i].timestamp_cpu_values);
		memdelete_arr(frames[i].timestamp_result_names);
		memdelete_arr(frames[i].timestamp_result_values);
		memdelete_arr(frames[i].timestamp_cpu_result_values);
	}

	for (int i = 0; i < split_draw_list_allocators.size(); i++) {
		vkDestroyCommandPool(device, split_draw_list_allocators[i].command_pool, nullptr);
	}

	memdelete_arr(frames);

	for (int i = 0; i < staging_buffer_blocks.size(); i++) {
		vmaDestroyBuffer(allocator, staging_buffer_blocks[i].buffer, staging_buffer_blocks[i].allocation);
	}

	//all these should be clear at this point
	ERR_FAIL_COND(descriptor_pools.size());
	ERR_FAIL_COND(dependency_map.size());
	ERR_FAIL_COND(reverse_dependency_map.size());
}

RenderingDeviceVulkan::RenderingDeviceVulkan() {
	screen_prepared = false;
}