Implementing OpenXR driver

6 files changed, 1057 insertions, 0 deletions

diff --git a/modules/openxr/extensions/openxr_android_extension.cpp b/modules/openxr/extensions/openxr_android_extension.cpp
new file mode 100644
index 0000000000..3bd4db169c
--- /dev/null
+++ b/modules/openxr/extensions/openxr_android_extension.cpp
@@ -0,0 +1,71 @@
+/*************************************************************************/
+/*  openxr_android_extension.cpp                                         */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 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 "openxr_android_extension.h"
+
+#include <openxr/openxr.h>
+#include <openxr/openxr_platform.h>
+
+OpenXRAndroidExtension *OpenXRAndroidExtension::singleton = nullptr;
+
+OpenXRAndroidExtension *OpenXRAndroidExtension::get_singleton() {
+	return singleton;
+}
+
+OpenXRAndroidExtension::OpenXRAndroidExtension(OpenXRAPI *p_openxr_api) :
+		OpenXRExtensionWrapper(p_openxr_api) {
+	singleton = this;
+
+	request_extensions[XR_KHR_ANDROID_THREAD_SETTINGS_EXTENSION_NAME] = nullptr; // must be available
+
+	// Initialize the loader
+	PFN_xrInitializeLoaderKHR xrInitializeLoaderKHR;
+	result = xrGetInstanceProcAddr(XR_NULL_HANDLE, "xrInitializeLoaderKHR", (PFN_xrVoidFunction *)(&xrInitializeLoaderKHR));
+	ERR_FAIL_COND_MSG(XR_FAILED(result), "Failed to retrieve pointer to xrInitializeLoaderKHR");
+
+	// TODO fix this code, this is still code from GDNative!
+	JNIEnv *env = android_api->godot_android_get_env();
+	JavaVM *vm;
+	env->GetJavaVM(&vm);
+	jobject activity_object = env->NewGlobalRef(android_api->godot_android_get_activity());
+
+	XrLoaderInitInfoAndroidKHR loader_init_info_android = {
+		.type = XR_TYPE_LOADER_INIT_INFO_ANDROID_KHR,
+		.next = nullptr,
+		.applicationVM = vm,
+		.applicationContext = activity_object
+	};
+	xrInitializeLoaderKHR((const XrLoaderInitInfoBaseHeaderKHR *)&loader_init_info_android);
+	ERR_FAIL_COND_MSG(XR_FAILED(result), "Failed to call xrInitializeLoaderKHR");
+}
+
+OpenXRAndroidExtension::~OpenXRAndroidExtension() {
+	singleton = nullptr;
+}
diff --git a/modules/openxr/extensions/openxr_android_extension.h b/modules/openxr/extensions/openxr_android_extension.h
new file mode 100644
index 0000000000..e102197a55
--- /dev/null
+++ b/modules/openxr/extensions/openxr_android_extension.h
@@ -0,0 +1,47 @@
+/*************************************************************************/
+/*  openxr_android_extension.h                                           */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 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.                */
+/*************************************************************************/
+
+#ifndef OPENXR_ANDROID_EXTENSION_H
+#define OPENXR_ANDROID_EXTENSION_H
+
+#include "openxr_extension_wrapper.h"
+
+class OpenXRAndroidExtension : public OpenXRExtensionWrapper {
+public:
+	static OpenXRAndroidExtension *get_singleton();
+
+	OpenXRAndroidExtension(OpenXRAPI *p_openxr_api);
+	virtual ~OpenXRAndroidExtension() override;
+
+private:
+	static OpenXRAndroidExtension *singleton;
+};
+
+#endif // !OPENXR_ANDROID_EXTENSION_H
diff --git a/modules/openxr/extensions/openxr_composition_layer_provider.h b/modules/openxr/extensions/openxr_composition_layer_provider.h
new file mode 100644
index 0000000000..019dffa2a8
--- /dev/null
+++ b/modules/openxr/extensions/openxr_composition_layer_provider.h
@@ -0,0 +1,45 @@
+/*************************************************************************/
+/*  openxr_composition_layer_provider.h                                  */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 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.                */
+/*************************************************************************/
+
+#ifndef OPENXR_COMPOSITION_LAYER_PROVIDER_H
+#define OPENXR_COMPOSITION_LAYER_PROVIDER_H
+
+#include <openxr/openxr.h>
+
+// Interface for OpenXR extensions that provide a composition layer.
+class OpenXRCompositionLayerProvider {
+public:
+	// TODO changed to normal method definition for now
+	// CI complains until we implement this, haven't ported it yet from plugin
+	// virtual XrCompositionLayerBaseHeader *get_composition_layer() = 0;
+	XrCompositionLayerBaseHeader *get_composition_layer() { return nullptr; };
+};
+
+#endif // OPENXR_COMPOSITION_LAYER_PROVIDER_H
diff --git a/modules/openxr/extensions/openxr_extension_wrapper.h b/modules/openxr/extensions/openxr_extension_wrapper.h
new file mode 100644
index 0000000000..5242ee6063
--- /dev/null
+++ b/modules/openxr/extensions/openxr_extension_wrapper.h
@@ -0,0 +1,106 @@
+/*************************************************************************/
+/*  openxr_extension_wrapper.h                                           */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 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.                */
+/*************************************************************************/
+
+#ifndef OPENXR_EXTENSION_WRAPPER_H
+#define OPENXR_EXTENSION_WRAPPER_H
+
+#include "core/error/error_macros.h"
+#include "core/math/camera_matrix.h"
+#include "core/templates/map.h"
+#include "core/templates/rid.h"
+
+#include "thirdparty/openxr/src/common/xr_linear.h"
+#include <openxr/openxr.h>
+
+class OpenXRAPI;
+
+class OpenXRExtensionWrapper {
+protected:
+	OpenXRAPI *openxr_api;
+
+	// Store extension we require.
+	// If bool pointer is a nullptr this means this extension is mandatory and initialisation will fail if it is not available
+	// If bool pointer is set, value will be set to true or false depending on whether extension is available
+	Map<const char *, bool *> request_extensions;
+
+public:
+	virtual Map<const char *, bool *> get_request_extensions() {
+		return request_extensions;
+	}
+
+	// These functions allow an extension to add entries to a struct chain.
+	// `p_next_pointer` points to the last struct that was created for this chain
+	// and should be used as the value for the `pNext` pointer in the first struct you add.
+	// You should return the pointer to the last struct you define as your result.
+	// If you are not adding any structs, just return `p_next_pointer`.
+	// See existing extensions for examples of this implementation.
+	virtual void *set_system_properties_and_get_next_pointer(void *p_next_pointer) { return p_next_pointer; }
+	virtual void *set_session_create_and_get_next_pointer(void *p_next_pointer) { return p_next_pointer; }
+	virtual void *set_swapchain_create_info_and_get_next_pointer(void *p_next_pointer) { return p_next_pointer; }
+
+	virtual void on_instance_created(const XrInstance p_instance) {}
+	virtual void on_instance_destroyed() {}
+	virtual void on_session_created(const XrSession p_instance) {}
+	virtual void on_process() {}
+	virtual void on_pre_render() {}
+	virtual void on_session_destroyed() {}
+
+	virtual void on_state_idle() {}
+	virtual void on_state_ready() {}
+	virtual void on_state_synchronized() {}
+	virtual void on_state_visible() {}
+	virtual void on_state_focused() {}
+	virtual void on_state_stopping() {}
+	virtual void on_state_loss_pending() {}
+	virtual void on_state_exiting() {}
+
+	// Returns true if the event was handled, false otherwise.
+	virtual bool on_event_polled(const XrEventDataBuffer &event) {
+		return false;
+	}
+
+	OpenXRExtensionWrapper(OpenXRAPI *p_openxr_api) { openxr_api = p_openxr_api; };
+	virtual ~OpenXRExtensionWrapper() = default;
+};
+
+class OpenXRGraphicsExtensionWrapper : public OpenXRExtensionWrapper {
+public:
+	virtual void get_usable_swapchain_formats(Vector<int64_t> &p_usable_swap_chains) = 0;
+	virtual String get_swapchain_format_name(int64_t p_swapchain_format) const = 0;
+	virtual bool get_swapchain_image_data(XrSwapchain p_swapchain, int64_t p_swapchain_format, uint32_t p_width, uint32_t p_height, uint32_t p_sample_count, uint32_t p_array_size, void **r_swapchain_graphics_data) = 0;
+	virtual void cleanup_swapchain_graphics_data(void **p_swapchain_graphics_data) = 0;
+	virtual bool create_projection_fov(const XrFovf p_fov, double p_z_near, double p_z_far, CameraMatrix &r_camera_matrix) = 0;
+	virtual bool copy_render_target_to_image(RID p_from_render_target, void *p_swapchain_graphics_data, int p_image_index) = 0;
+
+	OpenXRGraphicsExtensionWrapper(OpenXRAPI *p_openxr_api) :
+			OpenXRExtensionWrapper(p_openxr_api){};
+};
+
+#endif // ~OPENXR_EXTENSION_WRAPPER_H
diff --git a/modules/openxr/extensions/openxr_vulkan_extension.cpp b/modules/openxr/extensions/openxr_vulkan_extension.cpp
new file mode 100644
index 0000000000..ba790500f9
--- /dev/null
+++ b/modules/openxr/extensions/openxr_vulkan_extension.cpp
@@ -0,0 +1,695 @@
+/*************************************************************************/
+/*  openxr_vulkan_extension.cpp                                          */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 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 "core/string/print_string.h"
+
+#include "modules/openxr/extensions/openxr_vulkan_extension.h"
+#include "modules/openxr/openxr_api.h"
+#include "modules/openxr/openxr_util.h"
+#include "servers/rendering/renderer_rd/renderer_storage_rd.h"
+#include "servers/rendering/rendering_server_globals.h"
+#include "servers/rendering_server.h"
+
+// need to include Vulkan so we know of type definitions
+#define XR_USE_GRAPHICS_API_VULKAN
+
+#ifdef WINDOWS_ENABLED
+// Including windows.h here is absolutely evil, we shouldn't be doing this outside of platform
+// however due to the way the openxr headers are put together, we have no choice.
+#include <windows.h>
+#endif
+
+// include platform dependent structs
+#include <openxr/openxr_platform.h>
+
+PFN_xrGetVulkanGraphicsRequirements2KHR xrGetVulkanGraphicsRequirements2KHR_ptr = nullptr;
+PFN_xrCreateVulkanInstanceKHR xrCreateVulkanInstanceKHR_ptr = nullptr;
+PFN_xrGetVulkanGraphicsDevice2KHR xrGetVulkanGraphicsDevice2KHR_ptr = nullptr;
+PFN_xrCreateVulkanDeviceKHR xrCreateVulkanDeviceKHR_ptr = nullptr;
+
+OpenXRVulkanExtension::OpenXRVulkanExtension(OpenXRAPI *p_openxr_api) :
+		OpenXRGraphicsExtensionWrapper(p_openxr_api) {
+	VulkanContext::set_vulkan_hooks(this);
+
+	request_extensions[XR_KHR_VULKAN_ENABLE2_EXTENSION_NAME] = nullptr; // must be available
+
+	ERR_FAIL_NULL(openxr_api);
+}
+
+OpenXRVulkanExtension::~OpenXRVulkanExtension() {
+	VulkanContext::set_vulkan_hooks(nullptr);
+}
+
+void OpenXRVulkanExtension::on_instance_created(const XrInstance p_instance) {
+	XrResult result;
+
+	ERR_FAIL_NULL(openxr_api);
+
+	// Obtain pointers to functions we're accessing here, they are (not yet) part of core.
+	result = xrGetInstanceProcAddr(p_instance, "xrGetVulkanGraphicsRequirements2KHR", (PFN_xrVoidFunction *)&xrGetVulkanGraphicsRequirements2KHR_ptr);
+	if (XR_FAILED(result)) {
+		print_line("OpenXR: Failed to xrGetVulkanGraphicsRequirements2KHR entry point [", openxr_api->get_error_string(result), "]");
+	}
+
+	result = xrGetInstanceProcAddr(p_instance, "xrCreateVulkanInstanceKHR", (PFN_xrVoidFunction *)&xrCreateVulkanInstanceKHR_ptr);
+	if (XR_FAILED(result)) {
+		print_line("OpenXR: Failed to xrCreateVulkanInstanceKHR entry point [", openxr_api->get_error_string(result), "]");
+	}
+
+	result = xrGetInstanceProcAddr(p_instance, "xrGetVulkanGraphicsDevice2KHR", (PFN_xrVoidFunction *)&xrGetVulkanGraphicsDevice2KHR_ptr);
+	if (XR_FAILED(result)) {
+		print_line("OpenXR: Failed to xrGetVulkanGraphicsDevice2KHR entry point [", openxr_api->get_error_string(result), "]");
+	}
+
+	result = xrGetInstanceProcAddr(p_instance, "xrCreateVulkanDeviceKHR", (PFN_xrVoidFunction *)&xrCreateVulkanDeviceKHR_ptr);
+	if (XR_FAILED(result)) {
+		print_line("OpenXR: Failed to xrCreateVulkanDeviceKHR entry point [", openxr_api->get_error_string(result), "]");
+	}
+}
+
+XrResult OpenXRVulkanExtension::xrGetVulkanGraphicsRequirements2KHR(XrInstance p_instance, XrSystemId p_system_id, XrGraphicsRequirementsVulkanKHR *p_graphics_requirements) {
+	ERR_FAIL_NULL_V(xrGetVulkanGraphicsRequirements2KHR_ptr, XR_ERROR_HANDLE_INVALID);
+
+	return (*xrGetVulkanGraphicsRequirements2KHR_ptr)(p_instance, p_system_id, p_graphics_requirements);
+}
+
+bool OpenXRVulkanExtension::check_graphics_api_support(XrVersion p_desired_version) {
+	ERR_FAIL_NULL_V(openxr_api, false);
+
+	XrGraphicsRequirementsVulkan2KHR vulkan_requirements = {
+		XR_TYPE_GRAPHICS_REQUIREMENTS_VULKAN2_KHR, // type
+		nullptr, // next
+		0, // minApiVersionSupported
+		0 // maxApiVersionSupported
+	};
+
+	XrResult result = xrGetVulkanGraphicsRequirements2KHR(openxr_api->get_instance(), openxr_api->get_system_id(), &vulkan_requirements);
+	if (XR_FAILED(result)) {
+		print_line("OpenXR: Failed to get vulkan graphics requirements [", openxr_api->get_error_string(result), "]");
+		return false;
+	}
+
+	// #ifdef DEBUG
+	print_line("OpenXR: XrGraphicsRequirementsVulkan2KHR:");
+	print_line(" - minApiVersionSupported: ", OpenXRUtil::make_xr_version_string(vulkan_requirements.minApiVersionSupported));
+	print_line(" - maxApiVersionSupported: ", OpenXRUtil::make_xr_version_string(vulkan_requirements.maxApiVersionSupported));
+	// #endif
+
+	if (p_desired_version < vulkan_requirements.minApiVersionSupported) {
+		print_line("OpenXR: Requested Vulkan version does not meet the minimum version this runtime supports.");
+		print_line("- desired_version ", OpenXRUtil::make_xr_version_string(p_desired_version));
+		print_line("- minApiVersionSupported ", OpenXRUtil::make_xr_version_string(vulkan_requirements.minApiVersionSupported));
+		print_line("- maxApiVersionSupported ", OpenXRUtil::make_xr_version_string(vulkan_requirements.maxApiVersionSupported));
+		return false;
+	}
+
+	if (p_desired_version > vulkan_requirements.maxApiVersionSupported) {
+		print_line("OpenXR: Requested Vulkan version exceeds the maximum version this runtime has been tested on and is known to support.");
+		print_line("- desired_version ", OpenXRUtil::make_xr_version_string(p_desired_version));
+		print_line("- minApiVersionSupported ", OpenXRUtil::make_xr_version_string(vulkan_requirements.minApiVersionSupported));
+		print_line("- maxApiVersionSupported ", OpenXRUtil::make_xr_version_string(vulkan_requirements.maxApiVersionSupported));
+	}
+
+	return true;
+}
+
+XrResult OpenXRVulkanExtension::xrCreateVulkanInstanceKHR(XrInstance p_instance, const XrVulkanInstanceCreateInfoKHR *p_create_info, VkInstance *r_vulkan_instance, VkResult *r_vulkan_result) {
+	ERR_FAIL_NULL_V(xrCreateVulkanInstanceKHR_ptr, XR_ERROR_HANDLE_INVALID);
+
+	return (*xrCreateVulkanInstanceKHR_ptr)(p_instance, p_create_info, r_vulkan_instance, r_vulkan_result);
+}
+
+bool OpenXRVulkanExtension::create_vulkan_instance(const VkInstanceCreateInfo *p_vulkan_create_info, VkInstance *r_instance) {
+	// get the vulkan version we are creating
+	uint32_t vulkan_version = p_vulkan_create_info->pApplicationInfo->apiVersion;
+	uint32_t major_version = VK_VERSION_MAJOR(vulkan_version);
+	uint32_t minor_version = VK_VERSION_MINOR(vulkan_version);
+	uint32_t patch_version = VK_VERSION_PATCH(vulkan_version);
+	XrVersion desired_version = XR_MAKE_VERSION(major_version, minor_version, patch_version);
+
+	// check if this is supported
+	if (!check_graphics_api_support(desired_version)) {
+		return false;
+	}
+
+	XrVulkanInstanceCreateInfoKHR xr_vulkan_instance_info = {
+		XR_TYPE_VULKAN_INSTANCE_CREATE_INFO_KHR, // type
+		nullptr, // next
+		openxr_api->get_system_id(), // systemId
+		0, // createFlags
+		vkGetInstanceProcAddr, // pfnGetInstanceProcAddr
+		p_vulkan_create_info, // vulkanCreateInfo
+		nullptr, // vulkanAllocator
+	};
+
+	VkResult vk_result = VK_SUCCESS;
+	XrResult result = xrCreateVulkanInstanceKHR(openxr_api->get_instance(), &xr_vulkan_instance_info, &vulkan_instance, &vk_result);
+	if (XR_FAILED(result)) {
+		print_line("OpenXR: Failed to create vulkan instance [", openxr_api->get_error_string(result), "]");
+		return false;
+	}
+
+	ERR_FAIL_COND_V_MSG(vk_result == VK_ERROR_INCOMPATIBLE_DRIVER, false,
+			"Cannot find a compatible Vulkan installable client driver (ICD).\n\n"
+			"vkCreateInstance Failure");
+	ERR_FAIL_COND_V_MSG(vk_result == VK_ERROR_EXTENSION_NOT_PRESENT, false,
+			"Cannot find a specified extension library.\n"
+			"Make sure your layers path is set appropriately.\n"
+			"vkCreateInstance Failure");
+	ERR_FAIL_COND_V_MSG(vk_result, false,
+			"vkCreateInstance failed.\n\n"
+			"Do you have a compatible Vulkan installable client driver (ICD) installed?\n"
+			"Please look at the Getting Started guide for additional information.\n"
+			"vkCreateInstance Failure");
+
+	*r_instance = vulkan_instance;
+
+	return true;
+}
+
+XrResult OpenXRVulkanExtension::xrGetVulkanGraphicsDevice2KHR(XrInstance p_instance, const XrVulkanGraphicsDeviceGetInfoKHR *p_get_info, VkPhysicalDevice *r_vulkan_physical_device) {
+	ERR_FAIL_NULL_V(xrGetVulkanGraphicsDevice2KHR_ptr, XR_ERROR_HANDLE_INVALID);
+
+	return (*xrGetVulkanGraphicsDevice2KHR_ptr)(p_instance, p_get_info, r_vulkan_physical_device);
+}
+
+bool OpenXRVulkanExtension::get_physical_device(VkPhysicalDevice *r_device) {
+	ERR_FAIL_NULL_V(openxr_api, false);
+
+	XrVulkanGraphicsDeviceGetInfoKHR get_info = {
+		XR_TYPE_VULKAN_GRAPHICS_DEVICE_GET_INFO_KHR, // type
+		nullptr, // next
+		openxr_api->get_system_id(), // systemId
+		vulkan_instance, // vulkanInstance
+	};
+
+	XrResult result = xrGetVulkanGraphicsDevice2KHR(openxr_api->get_instance(), &get_info, &vulkan_physical_device);
+	if (XR_FAILED(result)) {
+		print_line("OpenXR: Failed to obtain vulkan physical device [", openxr_api->get_error_string(result), "]");
+		return false;
+	}
+
+	*r_device = vulkan_physical_device;
+
+	return true;
+}
+
+XrResult OpenXRVulkanExtension::xrCreateVulkanDeviceKHR(XrInstance p_instance, const XrVulkanDeviceCreateInfoKHR *p_create_info, VkDevice *r_device, VkResult *r_result) {
+	ERR_FAIL_NULL_V(xrCreateVulkanDeviceKHR_ptr, XR_ERROR_HANDLE_INVALID);
+
+	return (*xrCreateVulkanDeviceKHR_ptr)(p_instance, p_create_info, r_device, r_result);
+}
+
+bool OpenXRVulkanExtension::create_vulkan_device(const VkDeviceCreateInfo *p_device_create_info, VkDevice *r_device) {
+	ERR_FAIL_NULL_V(openxr_api, false);
+
+	// the first entry in our queue list should be the one we need to remember...
+	vulkan_queue_family_index = p_device_create_info->pQueueCreateInfos[0].queueFamilyIndex;
+	vulkan_queue_index = 0; // ??
+
+	XrVulkanDeviceCreateInfoKHR create_info = {
+		XR_TYPE_VULKAN_DEVICE_CREATE_INFO_KHR, // type
+		nullptr, // next
+		openxr_api->get_system_id(), // systemId
+		0, // createFlags
+		vkGetInstanceProcAddr, // pfnGetInstanceProcAddr
+		vulkan_physical_device, // vulkanPhysicalDevice
+		p_device_create_info, // vulkanCreateInfo
+		nullptr // vulkanAllocator
+	};
+
+	VkResult vk_result = VK_SUCCESS;
+	XrResult result = xrCreateVulkanDeviceKHR(openxr_api->get_instance(), &create_info, &vulkan_device, &vk_result);
+	if (XR_FAILED(result)) {
+		print_line("OpenXR: Failed to create vulkan device [", openxr_api->get_error_string(result), "]");
+		return false;
+	}
+
+	if (vk_result != VK_SUCCESS) {
+		print_line("OpenXR: Failed to create vulkan device [vulkan error", vk_result, "]");
+	}
+
+	*r_device = vulkan_device;
+
+	return true;
+}
+
+XrGraphicsBindingVulkanKHR OpenXRVulkanExtension::graphics_binding_vulkan;
+
+void *OpenXRVulkanExtension::set_session_create_and_get_next_pointer(void *p_next_pointer) {
+	graphics_binding_vulkan.type = XR_TYPE_GRAPHICS_BINDING_VULKAN_KHR;
+	graphics_binding_vulkan.next = p_next_pointer;
+	graphics_binding_vulkan.instance = vulkan_instance;
+	graphics_binding_vulkan.physicalDevice = vulkan_physical_device;
+	graphics_binding_vulkan.device = vulkan_device;
+	graphics_binding_vulkan.queueFamilyIndex = vulkan_queue_family_index;
+	graphics_binding_vulkan.queueIndex = vulkan_queue_index;
+
+	return &graphics_binding_vulkan;
+}
+
+void OpenXRVulkanExtension::get_usable_swapchain_formats(Vector<int64_t> &p_usable_swap_chains) {
+	// We might want to do more here especially if we keep things in linear color space
+	// Possibly add in R10G10B10A2 as an option if we're using the mobile renderer.
+	p_usable_swap_chains.push_back(VK_FORMAT_R8G8B8A8_SRGB);
+	p_usable_swap_chains.push_back(VK_FORMAT_B8G8R8A8_SRGB);
+	p_usable_swap_chains.push_back(VK_FORMAT_R8G8B8A8_UINT);
+	p_usable_swap_chains.push_back(VK_FORMAT_B8G8R8A8_UINT);
+}
+
+bool OpenXRVulkanExtension::get_swapchain_image_data(XrSwapchain p_swapchain, int64_t p_swapchain_format, uint32_t p_width, uint32_t p_height, uint32_t p_sample_count, uint32_t p_array_size, void **r_swapchain_graphics_data) {
+	XrSwapchainImageVulkanKHR *images = nullptr;
+
+	RenderingServer *rendering_server = RenderingServer::get_singleton();
+	ERR_FAIL_NULL_V(rendering_server, false);
+	RenderingDevice *rendering_device = rendering_server->get_rendering_device();
+	ERR_FAIL_NULL_V(rendering_device, false);
+
+	uint32_t swapchain_length;
+	XrResult result = xrEnumerateSwapchainImages(p_swapchain, 0, &swapchain_length, nullptr);
+	if (XR_FAILED(result)) {
+		print_line("OpenXR: Failed to get swapchaim image count [", openxr_api->get_error_string(result), "]");
+		return false;
+	}
+
+	images = (XrSwapchainImageVulkanKHR *)memalloc(sizeof(XrSwapchainImageVulkanKHR) * swapchain_length);
+	ERR_FAIL_NULL_V_MSG(images, false, "OpenXR Couldn't allocate memory for swap chain image");
+
+	for (uint64_t i = 0; i < swapchain_length; i++) {
+		images[i].type = XR_TYPE_SWAPCHAIN_IMAGE_VULKAN_KHR;
+		images[i].next = nullptr;
+		images[i].image = nullptr;
+	}
+
+	result = xrEnumerateSwapchainImages(p_swapchain, swapchain_length, &swapchain_length, (XrSwapchainImageBaseHeader *)images);
+	if (XR_FAILED(result)) {
+		print_line("OpenXR: Failed to get swapchaim images [", openxr_api->get_error_string(result), "]");
+		memfree(images);
+		return false;
+	}
+
+	// SwapchainGraphicsData *data = (SwapchainGraphicsData *)memalloc(sizeof(SwapchainGraphicsData));
+	SwapchainGraphicsData *data = memnew(SwapchainGraphicsData);
+	if (data == nullptr) {
+		print_line("OpenXR: Failed to allocate memory for swapchain data");
+		memfree(images);
+		return false;
+	}
+	*r_swapchain_graphics_data = data;
+	data->is_multiview = (p_array_size > 1);
+
+	RenderingDevice::DataFormat format = RenderingDevice::DATA_FORMAT_R8G8B8A8_SRGB; // TODO set this based on p_swapchain_format
+	RenderingDevice::TextureSamples samples = RenderingDevice::TEXTURE_SAMPLES_1; // TODO set this based on p_sample_count
+	uint64_t usage_flags = RenderingDevice::TEXTURE_USAGE_SAMPLING_BIT | RenderingDevice::TEXTURE_USAGE_COLOR_ATTACHMENT_BIT;
+
+	Vector<RID> image_rids;
+	Vector<RID> framebuffers;
+
+	// create Godot texture objects for each entry in our swapchain
+	for (uint64_t i = 0; i < swapchain_length; i++) {
+		RID image_rid = rendering_device->texture_create_from_extension(
+				p_array_size == 1 ? RenderingDevice::TEXTURE_TYPE_2D : RenderingDevice::TEXTURE_TYPE_2D_ARRAY,
+				format,
+				samples,
+				usage_flags,
+				(uint64_t)images[i].image,
+				p_width,
+				p_height,
+				1,
+				p_array_size);
+
+		image_rids.push_back(image_rid);
+
+		{
+			Vector<RID> fb;
+			fb.push_back(image_rid);
+
+			RID fb_rid = rendering_device->framebuffer_create(fb, RenderingDevice::INVALID_ID, p_array_size);
+			framebuffers.push_back(fb_rid);
+		}
+	}
+
+	data->image_rids = image_rids;
+	data->framebuffers = framebuffers;
+
+	memfree(images);
+
+	return true;
+}
+
+bool OpenXRVulkanExtension::create_projection_fov(const XrFovf p_fov, double p_z_near, double p_z_far, CameraMatrix &r_camera_matrix) {
+	// Even though this is a Vulkan renderer we're using OpenGL coordinate systems
+	XrMatrix4x4f matrix;
+	XrMatrix4x4f_CreateProjectionFov(&matrix, GRAPHICS_OPENGL, p_fov, (float)p_z_near, (float)p_z_far);
+
+	for (int j = 0; j < 4; j++) {
+		for (int i = 0; i < 4; i++) {
+			r_camera_matrix.matrix[j][i] = matrix.m[j * 4 + i];
+		}
+	}
+
+	return true;
+}
+
+bool OpenXRVulkanExtension::copy_render_target_to_image(RID p_from_render_target, void *p_swapchain_graphics_data, int p_image_index) {
+	SwapchainGraphicsData *data = (SwapchainGraphicsData *)p_swapchain_graphics_data;
+	ERR_FAIL_NULL_V(data, false);
+	ERR_FAIL_COND_V(p_from_render_target.is_null(), false);
+	ERR_FAIL_NULL_V(RendererStorageRD::base_singleton, false);
+
+	RID source_image = RendererStorageRD::base_singleton->render_target_get_rd_texture(p_from_render_target);
+	ERR_FAIL_COND_V(source_image.is_null(), false);
+
+	RID depth_image; // TODO implement
+
+	ERR_FAIL_INDEX_V(p_image_index, data->framebuffers.size(), false);
+	RID fb = data->framebuffers[p_image_index];
+	ERR_FAIL_COND_V(fb.is_null(), false);
+
+	// Our vulkan extension can only be used in conjunction with our vulkan renderer.
+	// We need access to the effects object in order to have access to our copy logic.
+	// Breaking all the rules but there is no nice way to do this.
+	EffectsRD *effects = RendererStorageRD::base_singleton->get_effects();
+	ERR_FAIL_NULL_V(effects, false);
+	effects->copy_to_fb_rect(source_image, fb, Rect2i(), false, false, false, false, depth_image, data->is_multiview);
+
+	return true;
+}
+
+void OpenXRVulkanExtension::cleanup_swapchain_graphics_data(void **p_swapchain_graphics_data) {
+	if (*p_swapchain_graphics_data == nullptr) {
+		return;
+	}
+
+	SwapchainGraphicsData *data = (SwapchainGraphicsData *)*p_swapchain_graphics_data;
+
+	RenderingServer *rendering_server = RenderingServer::get_singleton();
+	ERR_FAIL_NULL(rendering_server);
+	RenderingDevice *rendering_device = rendering_server->get_rendering_device();
+	ERR_FAIL_NULL(rendering_device);
+
+	for (int i = 0; i < data->image_rids.size(); i++) {
+		// This should clean up our RIDs and associated texture objects but shouldn't destroy the images, they are owned by our XrSwapchain
+		rendering_device->free(data->image_rids[i]);
+	}
+	data->image_rids.clear();
+
+	for (int i = 0; i < data->framebuffers.size(); i++) {
+		// This should clean up our RIDs and associated texture objects but shouldn't destroy the images, they are owned by our XrSwapchain
+		rendering_device->free(data->framebuffers[i]);
+	}
+	data->framebuffers.clear();
+
+	memdelete(data);
+	*p_swapchain_graphics_data = nullptr;
+}
+
+#define ENUM_TO_STRING_CASE(e) \
+	case e: {                  \
+		return String(#e);     \
+	} break;
+
+String OpenXRVulkanExtension::get_swapchain_format_name(int64_t p_swapchain_format) const {
+	// This really should be in vulkan_context...
+	VkFormat format = VkFormat(p_swapchain_format);
+	switch (format) {
+		ENUM_TO_STRING_CASE(VK_FORMAT_UNDEFINED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R4G4_UNORM_PACK8)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R4G4B4A4_UNORM_PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B4G4R4A4_UNORM_PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R5G6B5_UNORM_PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B5G6R5_UNORM_PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R5G5B5A1_UNORM_PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B5G5R5A1_UNORM_PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A1R5G5B5_UNORM_PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8_SNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8_USCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8_SSCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8_SRGB)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8_SNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8_USCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8_SSCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8_SRGB)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8B8_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8B8_SNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8B8_USCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8B8_SSCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8B8_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8B8_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8B8_SRGB)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B8G8R8_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B8G8R8_SNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B8G8R8_USCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B8G8R8_SSCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B8G8R8_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B8G8R8_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B8G8R8_SRGB)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8B8A8_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8B8A8_SNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8B8A8_USCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8B8A8_SSCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8B8A8_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8B8A8_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R8G8B8A8_SRGB)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B8G8R8A8_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B8G8R8A8_SNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B8G8R8A8_USCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B8G8R8A8_SSCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B8G8R8A8_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B8G8R8A8_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B8G8R8A8_SRGB)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A8B8G8R8_UNORM_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A8B8G8R8_SNORM_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A8B8G8R8_USCALED_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A8B8G8R8_SSCALED_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A8B8G8R8_UINT_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A8B8G8R8_SINT_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A8B8G8R8_SRGB_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A2R10G10B10_UNORM_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A2R10G10B10_SNORM_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A2R10G10B10_USCALED_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A2R10G10B10_SSCALED_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A2R10G10B10_UINT_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A2R10G10B10_SINT_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A2B10G10R10_UNORM_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A2B10G10R10_SNORM_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A2B10G10R10_USCALED_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A2B10G10R10_SSCALED_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A2B10G10R10_UINT_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A2B10G10R10_SINT_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16_SNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16_USCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16_SSCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16_SFLOAT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16_SNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16_USCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16_SSCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16_SFLOAT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16B16_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16B16_SNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16B16_USCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16B16_SSCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16B16_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16B16_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16B16_SFLOAT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16B16A16_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16B16A16_SNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16B16A16_USCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16B16A16_SSCALED)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16B16A16_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16B16A16_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R16G16B16A16_SFLOAT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R32_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R32_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R32_SFLOAT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R32G32_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R32G32_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R32G32_SFLOAT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R32G32B32_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R32G32B32_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R32G32B32_SFLOAT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R32G32B32A32_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R32G32B32A32_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R32G32B32A32_SFLOAT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R64_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R64_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R64_SFLOAT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R64G64_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R64G64_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R64G64_SFLOAT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R64G64B64_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R64G64B64_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R64G64B64_SFLOAT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R64G64B64A64_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R64G64B64A64_SINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R64G64B64A64_SFLOAT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B10G11R11_UFLOAT_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_E5B9G9R9_UFLOAT_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_D16_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_X8_D24_UNORM_PACK32)
+		ENUM_TO_STRING_CASE(VK_FORMAT_D32_SFLOAT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_S8_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_D16_UNORM_S8_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_D24_UNORM_S8_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_D32_SFLOAT_S8_UINT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC1_RGB_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC1_RGB_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC1_RGBA_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC1_RGBA_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC2_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC2_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC3_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC3_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC4_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC4_SNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC5_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC5_SNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC6H_UFLOAT_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC6H_SFLOAT_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC7_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_BC7_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ETC2_R8G8B8_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ETC2_R8G8B8_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ETC2_R8G8B8A1_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ETC2_R8G8B8A1_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ETC2_R8G8B8A8_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ETC2_R8G8B8A8_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_EAC_R11_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_EAC_R11_SNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_EAC_R11G11_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_EAC_R11G11_SNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_4x4_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_4x4_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_5x4_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_5x4_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_5x5_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_5x5_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_6x5_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_6x5_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_6x6_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_6x6_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_8x5_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_8x5_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_8x6_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_8x6_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_8x8_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_8x8_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_10x5_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_10x5_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_10x6_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_10x6_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_10x8_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_10x8_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_10x10_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_10x10_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_12x10_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_12x10_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_12x12_UNORM_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_12x12_SRGB_BLOCK)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G8B8G8R8_422_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B8G8R8G8_422_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G8_B8_R8_3PLANE_420_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G8_B8R8_2PLANE_420_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G8_B8_R8_3PLANE_422_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G8_B8R8_2PLANE_422_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G8_B8_R8_3PLANE_444_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R10X6_UNORM_PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R10X6G10X6_UNORM_2PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R10X6G10X6B10X6A10X6_UNORM_4PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G10X6B10X6G10X6R10X6_422_UNORM_4PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B10X6G10X6R10X6G10X6_422_UNORM_4PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G10X6_B10X6_R10X6_3PLANE_420_UNORM_3PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G10X6_B10X6_R10X6_3PLANE_422_UNORM_3PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G10X6_B10X6R10X6_2PLANE_422_UNORM_3PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G10X6_B10X6_R10X6_3PLANE_444_UNORM_3PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R12X4_UNORM_PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R12X4G12X4_UNORM_2PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_R12X4G12X4B12X4A12X4_UNORM_4PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G12X4B12X4G12X4R12X4_422_UNORM_4PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B12X4G12X4R12X4G12X4_422_UNORM_4PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G12X4_B12X4_R12X4_3PLANE_420_UNORM_3PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G12X4_B12X4R12X4_2PLANE_420_UNORM_3PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G12X4_B12X4_R12X4_3PLANE_422_UNORM_3PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G12X4_B12X4R12X4_2PLANE_422_UNORM_3PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G12X4_B12X4_R12X4_3PLANE_444_UNORM_3PACK16)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G16B16G16R16_422_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_B16G16R16G16_422_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G16_B16_R16_3PLANE_420_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G16_B16R16_2PLANE_420_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G16_B16_R16_3PLANE_422_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G16_B16R16_2PLANE_422_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G16_B16_R16_3PLANE_444_UNORM)
+		ENUM_TO_STRING_CASE(VK_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG)
+		ENUM_TO_STRING_CASE(VK_FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG)
+		ENUM_TO_STRING_CASE(VK_FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG)
+		ENUM_TO_STRING_CASE(VK_FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG)
+		ENUM_TO_STRING_CASE(VK_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG)
+		ENUM_TO_STRING_CASE(VK_FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG)
+		ENUM_TO_STRING_CASE(VK_FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG)
+		ENUM_TO_STRING_CASE(VK_FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_4x4_SFLOAT_BLOCK_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_5x4_SFLOAT_BLOCK_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_5x5_SFLOAT_BLOCK_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_6x5_SFLOAT_BLOCK_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_6x6_SFLOAT_BLOCK_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_8x5_SFLOAT_BLOCK_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_8x6_SFLOAT_BLOCK_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_8x8_SFLOAT_BLOCK_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_10x5_SFLOAT_BLOCK_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_10x6_SFLOAT_BLOCK_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_10x8_SFLOAT_BLOCK_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_10x10_SFLOAT_BLOCK_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_12x10_SFLOAT_BLOCK_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_ASTC_12x12_SFLOAT_BLOCK_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G8_B8R8_2PLANE_444_UNORM_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G10X6_B10X6R10X6_2PLANE_444_UNORM_3PACK16_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G12X4_B12X4R12X4_2PLANE_444_UNORM_3PACK16_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_G16_B16R16_2PLANE_444_UNORM_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A4R4G4B4_UNORM_PACK16_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_A4B4G4R4_UNORM_PACK16_EXT)
+		ENUM_TO_STRING_CASE(VK_FORMAT_MAX_ENUM)
+		default: {
+			return String("Swapchain format ") + String::num_int64(int64_t(p_swapchain_format));
+		} break;
+	}
+}
diff --git a/modules/openxr/extensions/openxr_vulkan_extension.h b/modules/openxr/extensions/openxr_vulkan_extension.h
new file mode 100644
index 0000000000..c04ea2c1dd
--- /dev/null
+++ b/modules/openxr/extensions/openxr_vulkan_extension.h
@@ -0,0 +1,93 @@
+/*************************************************************************/
+/*  openxr_vulkan_extension.h                                            */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 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.                */
+/*************************************************************************/
+
+#ifndef OPENXR_VULKAN_EXTENSION_H
+#define OPENXR_VULKAN_EXTENSION_H
+
+#include "core/templates/vector.h"
+#include "openxr_extension_wrapper.h"
+
+#include "drivers/vulkan/vulkan_context.h"
+
+// Forward declare these so we don't need OpenXR headers where-ever this is included
+// Including OpenXR at this point gives loads and loads of compile issues especially
+// on Windows because windows.h is EVIL and really shouldn't be included outside of platform
+// but we really don't have a choice in the matter
+
+struct XrGraphicsRequirementsVulkanKHR;
+struct XrVulkanInstanceCreateInfoKHR;
+struct XrVulkanGraphicsDeviceGetInfoKHR;
+struct XrVulkanDeviceCreateInfoKHR;
+struct XrGraphicsBindingVulkanKHR;
+
+class OpenXRVulkanExtension : public OpenXRGraphicsExtensionWrapper, VulkanHooks {
+public:
+	OpenXRVulkanExtension(OpenXRAPI *p_openxr_api);
+	virtual ~OpenXRVulkanExtension() override;
+
+	virtual void on_instance_created(const XrInstance p_instance) override;
+	virtual void *set_session_create_and_get_next_pointer(void *p_next_pointer) override;
+
+	virtual bool create_vulkan_instance(const VkInstanceCreateInfo *p_vulkan_create_info, VkInstance *r_instance);
+	virtual bool get_physical_device(VkPhysicalDevice *r_device);
+	virtual bool create_vulkan_device(const VkDeviceCreateInfo *p_device_create_info, VkDevice *r_device);
+
+	virtual void get_usable_swapchain_formats(Vector<int64_t> &p_usable_swap_chains) override;
+	virtual String get_swapchain_format_name(int64_t p_swapchain_format) const override;
+	virtual bool get_swapchain_image_data(XrSwapchain p_swapchain, int64_t p_swapchain_format, uint32_t p_width, uint32_t p_height, uint32_t p_sample_count, uint32_t p_array_size, void **r_swapchain_graphics_data) override;
+	virtual void cleanup_swapchain_graphics_data(void **p_swapchain_graphics_data) override;
+	virtual bool create_projection_fov(const XrFovf p_fov, double p_z_near, double p_z_far, CameraMatrix &r_camera_matrix) override;
+	virtual bool copy_render_target_to_image(RID p_from_render_target, void *p_swapchain_graphics_data, int p_image_index) override;
+
+private:
+	static OpenXRVulkanExtension *singleton;
+	static XrGraphicsBindingVulkanKHR graphics_binding_vulkan; // declaring this as static so we don't need to know its size and we only need it once when creating our session
+
+	struct SwapchainGraphicsData {
+		bool is_multiview;
+		Vector<RID> image_rids;
+		Vector<RID> framebuffers;
+	};
+
+	bool check_graphics_api_support(XrVersion p_desired_version);
+
+	VkInstance vulkan_instance;
+	VkPhysicalDevice vulkan_physical_device;
+	VkDevice vulkan_device;
+	uint32_t vulkan_queue_family_index;
+	uint32_t vulkan_queue_index;
+
+	XrResult xrGetVulkanGraphicsRequirements2KHR(XrInstance p_instance, XrSystemId p_system_id, XrGraphicsRequirementsVulkanKHR *p_graphics_requirements);
+	XrResult xrCreateVulkanInstanceKHR(XrInstance p_instance, const XrVulkanInstanceCreateInfoKHR *p_create_info, VkInstance *r_vulkan_instance, VkResult *r_vulkan_result);
+	XrResult xrGetVulkanGraphicsDevice2KHR(XrInstance p_instance, const XrVulkanGraphicsDeviceGetInfoKHR *p_get_info, VkPhysicalDevice *r_vulkan_physical_device);
+	XrResult xrCreateVulkanDeviceKHR(XrInstance p_instance, const XrVulkanDeviceCreateInfoKHR *p_create_info, VkDevice *r_device, VkResult *r_result);
+};
+
+#endif // !OPENXR_VULKAN_EXTENSION_H