11ea889fa9
This means artists don't need to adjust the value anymore as it can cover vista geometry with GI at last cascade borders.
92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
// Copyright (c) Wojciech Figat. All rights reserved.
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#pragma once
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#include "../RendererPass.h"
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#include "Engine/Core/Math/Int4.h"
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#include "Engine/Graphics/Textures/GPUTexture.h"
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/// <summary>
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/// Dynamic Diffuse Global Illumination rendering pass.
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/// </summary>
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class FLAXENGINE_API DynamicDiffuseGlobalIlluminationPass : public RendererPass<DynamicDiffuseGlobalIlluminationPass>
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{
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public:
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// Constant buffer data for DDGI access on a GPU.
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GPU_CB_STRUCT(ConstantsData {
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Float4 ProbesOriginAndSpacing[4];
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Float4 BlendOrigin[4]; // w is unused
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Int4 ProbesScrollOffsets[4]; // w is unused
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uint32 ProbesCounts[3];
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uint32 CascadesCount;
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float IrradianceGamma;
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float ProbeHistoryWeight;
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float RayMaxDistance;
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float IndirectLightingIntensity;
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Float3 ViewPos;
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uint32 RaysCount;
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Float4 FallbackIrradiance;
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});
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// Binding data for the GPU.
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struct BindingData
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{
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ConstantsData Constants;
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GPUTextureView* ProbesData;
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GPUTextureView* ProbesDistance;
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GPUTextureView* ProbesIrradiance;
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};
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private:
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bool _supported = false;
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AssetReference<Shader> _shader;
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GPUConstantBuffer* _cb0 = nullptr;
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GPUConstantBuffer* _cb1 = nullptr;
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GPUShaderProgramCS* _csClassify;
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GPUShaderProgramCS* _csUpdateProbesInitArgs;
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GPUShaderProgramCS* _csUpdateInactiveProbes;
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GPUShaderProgramCS* _csTraceRays[4];
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GPUShaderProgramCS* _csUpdateProbesIrradiance;
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GPUShaderProgramCS* _csUpdateProbesDistance;
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GPUPipelineState* _psIndirectLighting[2] = {};
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#if USE_EDITOR
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AssetReference<Model> _debugModel;
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AssetReference<MaterialBase> _debugMaterial;
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#endif
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public:
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/// <summary>
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/// Gets the DDGI binding data (only if enabled).
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/// </summary>
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/// <param name="buffers">The rendering context buffers.</param>
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/// <param name="result">The result DDGI data for binding to the shaders.</param>
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/// <returns>True if failed to render (platform doesn't support it, out of video memory, disabled feature or effect is not ready), otherwise false.</returns>
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bool Get(const RenderBuffers* buffers, BindingData& result);
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/// <summary>
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/// Renders the DDGI.
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/// </summary>
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/// <param name="renderContext">The rendering context.</param>
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/// <param name="context">The GPU context.</param>
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/// <param name="lightBuffer">The light accumulation buffer (input and output).</param>
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/// <returns>True if failed to render (platform doesn't support it, out of video memory, disabled feature or effect is not ready), otherwise false.</returns>
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bool Render(RenderContext& renderContext, GPUContext* context, GPUTextureView* lightBuffer);
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private:
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#if COMPILE_WITH_DEV_ENV
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uint64 LastFrameShaderReload = 0;
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void OnShaderReloading(Asset* obj);
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#endif
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bool RenderInner(RenderContext& renderContext, GPUContext* context, class DDGICustomBuffer& ddgiData);
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public:
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// [RendererPass]
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String ToString() const override;
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bool Init() override;
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void Dispose() override;
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protected:
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// [RendererPass]
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bool setupResources() override;
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};
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