Split GI effects and fix stereoscopic rendering of GI effects

2 files changed, 204 insertions, 0 deletions

diff --git a/servers/rendering/renderer_rd/effects/resolve.cpp b/servers/rendering/renderer_rd/effects/resolve.cpp
new file mode 100644
index 0000000000..6c49a2ebce
--- /dev/null
+++ b/servers/rendering/renderer_rd/effects/resolve.cpp
@@ -0,0 +1,130 @@
+/*************************************************************************/
+/*  resolve.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 "resolve.h"
+#include "servers/rendering/renderer_rd/renderer_compositor_rd.h"
+#include "servers/rendering/renderer_rd/storage_rd/material_storage.h"
+#include "servers/rendering/renderer_rd/uniform_set_cache_rd.h"
+
+using namespace RendererRD;
+
+Resolve::Resolve() {
+	Vector<String> resolve_modes;
+	resolve_modes.push_back("\n#define MODE_RESOLVE_GI\n");
+	resolve_modes.push_back("\n#define MODE_RESOLVE_GI\n#define VOXEL_GI_RESOLVE\n");
+	resolve_modes.push_back("\n#define MODE_RESOLVE_DEPTH\n");
+
+	resolve.shader.initialize(resolve_modes);
+
+	resolve.shader_version = resolve.shader.version_create();
+
+	for (int i = 0; i < RESOLVE_MODE_MAX; i++) {
+		resolve.pipelines[i] = RD::get_singleton()->compute_pipeline_create(resolve.shader.version_get_shader(resolve.shader_version, i));
+	}
+}
+
+Resolve::~Resolve() {
+	resolve.shader.version_free(resolve.shader_version);
+}
+
+void Resolve::resolve_gi(RID p_source_depth, RID p_source_normal_roughness, RID p_source_voxel_gi, RID p_dest_depth, RID p_dest_normal_roughness, RID p_dest_voxel_gi, Vector2i p_screen_size, int p_samples, uint32_t p_barrier) {
+	UniformSetCacheRD *uniform_set_cache = UniformSetCacheRD::get_singleton();
+	ERR_FAIL_NULL(uniform_set_cache);
+	MaterialStorage *material_storage = MaterialStorage::get_singleton();
+	ERR_FAIL_NULL(material_storage);
+
+	ResolvePushConstant push_constant;
+	push_constant.screen_size[0] = p_screen_size.x;
+	push_constant.screen_size[1] = p_screen_size.y;
+	push_constant.samples = p_samples;
+
+	// setup our uniforms
+	RID default_sampler = material_storage->sampler_rd_get_default(RS::CANVAS_ITEM_TEXTURE_FILTER_LINEAR, RS::CANVAS_ITEM_TEXTURE_REPEAT_DISABLED);
+
+	RD::Uniform u_source_depth(RD::UNIFORM_TYPE_SAMPLER_WITH_TEXTURE, 0, Vector<RID>({ default_sampler, p_source_depth }));
+	RD::Uniform u_source_normal_roughness(RD::UNIFORM_TYPE_SAMPLER_WITH_TEXTURE, 1, Vector<RID>({ default_sampler, p_source_normal_roughness }));
+	RD::Uniform u_dest_depth(RD::UNIFORM_TYPE_IMAGE, 0, Vector<RID>({ p_dest_depth }));
+	RD::Uniform u_dest_normal_roughness(RD::UNIFORM_TYPE_IMAGE, 1, Vector<RID>({ p_dest_normal_roughness }));
+
+	ResolveMode mode = p_source_voxel_gi.is_valid() ? RESOLVE_MODE_GI_VOXEL_GI : RESOLVE_MODE_GI;
+	RID shader = resolve.shader.version_get_shader(resolve.shader_version, mode);
+	ERR_FAIL_COND(shader.is_null());
+
+	RD::ComputeListID compute_list = RD::get_singleton()->compute_list_begin();
+	RD::get_singleton()->compute_list_bind_compute_pipeline(compute_list, resolve.pipelines[mode]);
+	RD::get_singleton()->compute_list_bind_uniform_set(compute_list, uniform_set_cache->get_cache(shader, 0, u_source_depth, u_source_normal_roughness), 0);
+	RD::get_singleton()->compute_list_bind_uniform_set(compute_list, uniform_set_cache->get_cache(shader, 1, u_dest_depth, u_dest_normal_roughness), 1);
+	if (p_source_voxel_gi.is_valid()) {
+		RD::Uniform u_source_voxel_gi(RD::UNIFORM_TYPE_SAMPLER_WITH_TEXTURE, 0, Vector<RID>({ default_sampler, p_source_voxel_gi }));
+		RD::Uniform u_dest_voxel_gi(RD::UNIFORM_TYPE_IMAGE, 0, p_dest_voxel_gi);
+
+		RD::get_singleton()->compute_list_bind_uniform_set(compute_list, uniform_set_cache->get_cache(shader, 2, u_source_voxel_gi), 2);
+		RD::get_singleton()->compute_list_bind_uniform_set(compute_list, uniform_set_cache->get_cache(shader, 3, u_dest_voxel_gi), 3);
+	}
+
+	RD::get_singleton()->compute_list_set_push_constant(compute_list, &push_constant, sizeof(ResolvePushConstant));
+
+	RD::get_singleton()->compute_list_dispatch_threads(compute_list, p_screen_size.x, p_screen_size.y, 1);
+
+	RD::get_singleton()->compute_list_end(p_barrier);
+}
+
+void Resolve::resolve_depth(RID p_source_depth, RID p_dest_depth, Vector2i p_screen_size, int p_samples, uint32_t p_barrier) {
+	UniformSetCacheRD *uniform_set_cache = UniformSetCacheRD::get_singleton();
+	ERR_FAIL_NULL(uniform_set_cache);
+	MaterialStorage *material_storage = MaterialStorage::get_singleton();
+	ERR_FAIL_NULL(material_storage);
+
+	ResolvePushConstant push_constant;
+	push_constant.screen_size[0] = p_screen_size.x;
+	push_constant.screen_size[1] = p_screen_size.y;
+	push_constant.samples = p_samples;
+
+	// setup our uniforms
+	RID default_sampler = material_storage->sampler_rd_get_default(RS::CANVAS_ITEM_TEXTURE_FILTER_LINEAR, RS::CANVAS_ITEM_TEXTURE_REPEAT_DISABLED);
+
+	RD::Uniform u_source_depth(RD::UNIFORM_TYPE_SAMPLER_WITH_TEXTURE, 0, Vector<RID>({ default_sampler, p_source_depth }));
+	RD::Uniform u_dest_depth(RD::UNIFORM_TYPE_IMAGE, 0, p_dest_depth);
+
+	ResolveMode mode = RESOLVE_MODE_DEPTH;
+	RID shader = resolve.shader.version_get_shader(resolve.shader_version, mode);
+	ERR_FAIL_COND(shader.is_null());
+
+	RD::ComputeListID compute_list = RD::get_singleton()->compute_list_begin();
+	RD::get_singleton()->compute_list_bind_compute_pipeline(compute_list, resolve.pipelines[mode]);
+	RD::get_singleton()->compute_list_bind_uniform_set(compute_list, uniform_set_cache->get_cache(shader, 0, u_source_depth), 0);
+	RD::get_singleton()->compute_list_bind_uniform_set(compute_list, uniform_set_cache->get_cache(shader, 1, u_dest_depth), 1);
+
+	RD::get_singleton()->compute_list_set_push_constant(compute_list, &push_constant, sizeof(ResolvePushConstant));
+
+	RD::get_singleton()->compute_list_dispatch_threads(compute_list, p_screen_size.x, p_screen_size.y, 1);
+
+	RD::get_singleton()->compute_list_end(p_barrier);
+}
diff --git a/servers/rendering/renderer_rd/effects/resolve.h b/servers/rendering/renderer_rd/effects/resolve.h
new file mode 100644
index 0000000000..d4b24a610f
--- /dev/null
+++ b/servers/rendering/renderer_rd/effects/resolve.h
@@ -0,0 +1,74 @@
+/*************************************************************************/
+/*  resolve.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 RESOLVE_RD_H
+#define RESOLVE_RD_H
+
+#include "servers/rendering/renderer_rd/pipeline_cache_rd.h"
+#include "servers/rendering/renderer_rd/shaders/effects/resolve.glsl.gen.h"
+#include "servers/rendering/renderer_scene_render.h"
+
+#include "servers/rendering_server.h"
+
+namespace RendererRD {
+
+class Resolve {
+private:
+	struct ResolvePushConstant {
+		int32_t screen_size[2];
+		int32_t samples;
+		uint32_t pad;
+	};
+
+	enum ResolveMode {
+		RESOLVE_MODE_GI,
+		RESOLVE_MODE_GI_VOXEL_GI,
+		RESOLVE_MODE_DEPTH,
+		RESOLVE_MODE_MAX
+	};
+
+	struct ResolveShader {
+		ResolvePushConstant push_constant;
+		ResolveShaderRD shader;
+		RID shader_version;
+		RID pipelines[RESOLVE_MODE_MAX]; //3 quality levels
+	} resolve;
+
+public:
+	Resolve();
+	~Resolve();
+
+	void resolve_gi(RID p_source_depth, RID p_source_normal_roughness, RID p_source_voxel_gi, RID p_dest_depth, RID p_dest_normal_roughness, RID p_dest_voxel_gi, Vector2i p_screen_size, int p_samples, uint32_t p_barrier = RD::BARRIER_MASK_ALL);
+	void resolve_depth(RID p_source_depth, RID p_dest_depth, Vector2i p_screen_size, int p_samples, uint32_t p_barrier = RD::BARRIER_MASK_ALL);
+};
+
+} // namespace RendererRD
+
+#endif // !RESOLVE_RD_H