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143 lines
4.8 KiB
143 lines
4.8 KiB
/****************************************************************************
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Copyright (c) 2020-2023 Xiamen Yaji Software Co., Ltd.
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http://www.cocos.com
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#pragma once
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#include "cocos/renderer/gfx-base/GFXDef.h"
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#include "cocos/scene/Pass.h"
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#include "cocos/scene/RenderScene.h"
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namespace cc {
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namespace pipeline {
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class RenderPipeline;
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struct ShaderStrings {
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ccstd::string glsl4;
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ccstd::string glsl3;
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ccstd::string glsl1;
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};
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class ClusterLightCulling {
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public:
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explicit ClusterLightCulling(RenderPipeline *pipeline);
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~ClusterLightCulling();
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static constexpr uint32_t CLUSTERS_X = 16;
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static constexpr uint32_t CLUSTERS_Y = 8;
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static constexpr uint32_t CLUSTERS_Z = 24;
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// z threads varies to meet limit number of threads
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static constexpr uint32_t CLUSTERS_X_THREADS = 16;
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static constexpr uint32_t CLUSTERS_Y_THREADS = 8;
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uint32_t clusterZThreads = 1;
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static constexpr uint32_t CLUSTER_COUNT = CLUSTERS_X * CLUSTERS_Y * CLUSTERS_Z;
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static constexpr uint32_t MAX_LIGHTS_PER_CLUSTER = 200;
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static constexpr uint32_t MAX_LIGHTS_GLOBAL = 1000;
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void initialize(gfx::Device *dev);
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void clusterLightCulling(scene::Camera *camera);
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private:
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ccstd::string &getShaderSource(ShaderStrings &sources);
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void initBuildingSatge();
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void initResetStage();
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void initCullingStage();
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void update();
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void updateLights();
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static bool isProjMatChange(const Mat4 &curProj, const Mat4 &oldProj) {
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for (uint32_t i = 0; i < sizeof(curProj.m) / sizeof(float); i++) {
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if (math::isNotEqualF(curProj.m[i], oldProj.m[i])) {
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return true;
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}
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}
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return false;
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}
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// weak reference
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gfx::Device *_device{nullptr};
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IntrusivePtr<scene::Camera> _camera;
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// weak reference
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RenderPipeline *_pipeline{nullptr};
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IntrusivePtr<gfx::Shader> _buildingShader;
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IntrusivePtr<gfx::DescriptorSetLayout> _buildingDescriptorSetLayout;
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IntrusivePtr<gfx::PipelineLayout> _buildingPipelineLayout;
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IntrusivePtr<gfx::PipelineState> _buildingPipelineState;
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IntrusivePtr<gfx::DescriptorSet> _buildingDescriptorSet;
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IntrusivePtr<gfx::Shader> _resetCounterShader;
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IntrusivePtr<gfx::DescriptorSetLayout> _resetCounterDescriptorSetLayout;
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IntrusivePtr<gfx::PipelineLayout> _resetCounterPipelineLayout;
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IntrusivePtr<gfx::PipelineState> _resetCounterPipelineState;
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IntrusivePtr<gfx::DescriptorSet> _resetCounterDescriptorSet;
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IntrusivePtr<gfx::Shader> _cullingShader;
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IntrusivePtr<gfx::DescriptorSetLayout> _cullingDescriptorSetLayout;
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IntrusivePtr<gfx::PipelineLayout> _cullingPipelineLayout;
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IntrusivePtr<gfx::PipelineState> _cullingPipelineState;
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IntrusivePtr<gfx::DescriptorSet> _cullingDescriptorSet;
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static constexpr uint32_t NEAR_FAR_OFFSET = 0;
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static constexpr uint32_t VIEW_PORT_OFFSET = 4;
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static constexpr uint32_t MAT_VIEW_OFFSET = 8;
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static constexpr uint32_t MAT_PROJ_INV_OFFSET = 24;
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ccstd::array<float, (2 * sizeof(Vec4) + 2 * sizeof(Mat4)) / sizeof(float)> _constants{};
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IntrusivePtr<gfx::Buffer> _constantsBuffer;
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// weak reference
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ccstd::vector<scene::Light *> _validLights;
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ccstd::vector<float> _lightBufferData;
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// weak reference
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gfx::GeneralBarrier *_resetBarrier{nullptr};
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gfx::DispatchInfo _buildingDispatchInfo;
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gfx::DispatchInfo _resetDispatchInfo;
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gfx::DispatchInfo _cullingDispatchInfo;
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bool _lightBufferResized{false};
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uint32_t _lightBufferStride{0};
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uint32_t _lightBufferCount{0};
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float _lightMeterScale{10000.0F};
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// only rebuild clusters when camera project matrix changed
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bool _rebuildClusters{false};
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ccstd::vector<Mat4> _oldCamProjMats;
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bool _initialized{false};
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};
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} // namespace pipeline
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} // namespace cc
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