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Add random per-probe rotation for rays tracing in DDGI

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This commit is contained in:
Wojtek Figat
2024-07-11 14:48:24 +02:00
parent dbda31d570
commit 352913ba14
9 changed files with 50 additions and 14 deletions
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9
Source/Engine/Renderer/GI/DynamicDiffuseGlobalIllumination.cpp
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@@ -46,6 +46,7 @@ GPU_CB_STRUCT(Data0 {
GlobalSignDistanceFieldPass::ConstantsData GlobalSDF;
GlobalSurfaceAtlasPass::ConstantsData GlobalSurfaceAtlas;
ShaderGBufferData GBuffer;
Float4 RaysRotation;
float Padding0;
uint32 ProbesCount;
float ResetBlend;
@@ -379,7 +380,7 @@ bool DynamicDiffuseGlobalIlluminationPass::RenderInner(RenderContext& renderCont
desc2 = GPUBufferDescription::Buffer(sizeof(GPUDispatchIndirectArgs) * Math::DivideAndRoundUp(probesCountCascade, DDGI_TRACE_RAYS_PROBES_COUNT_LIMIT), GPUBufferFlags::Argument | GPUBufferFlags::UnorderedAccess, PixelFormat::R32_UInt, nullptr, sizeof(uint32));
INIT_BUFFER(UpdateProbesInitArgs, "DDGI.UpdateProbesInitArgs");
#undef INIT_BUFFER
LOG(Info, "Dynamic Diffuse Global Illumination memory usage: {0} MB, probes: {1}", memUsage / 1024 / 1024, probesCountTotal);
LOG(Info, "Dynamic Diffuse Global Illumination probes: {0}, memory usage: {1} MB", probesCountTotal, memUsage / (1024 * 1024));
clear = true;
}
#if COMPILE_WITH_DEV_ENV
@@ -465,14 +466,15 @@ bool DynamicDiffuseGlobalIlluminationPass::RenderInner(RenderContext& renderCont
ddgiData.Result.ProbesDistance = ddgiData.ProbesDistance->View();
ddgiData.Result.ProbesIrradiance = ddgiData.ProbesIrradiance->View();
Data0 data;
// Compute random rotation matrix for probe rays orientation (randomized every frame)
Matrix3x3 raysRotationMatrix;
CalculateVolumeRandomRotation(raysRotationMatrix);
Quaternion& raysRotation = *(Quaternion*)&ddgiData.Result.Constants.RaysRotation;
Quaternion& raysRotation = *(Quaternion*)&data.RaysRotation;
Quaternion::RotationMatrix(raysRotationMatrix, raysRotation);
raysRotation.Conjugate();
Data0 data;
data.DDGI = ddgiData.Result.Constants;
data.GlobalSDF = bindingDataSDF.Constants;
data.GlobalSurfaceAtlas = bindingDataSurfaceAtlas.Constants;
@@ -638,7 +640,6 @@ bool DynamicDiffuseGlobalIlluminationPass::Render(RenderContext& renderContext,
auto& ddgiData = *renderBuffers->GetCustomBuffer<DDGICustomBuffer>(TEXT("DDGI"));
if (render && ddgiData.LastFrameUsed == Engine::FrameCount)
render = false;
PROFILE_GPU_CPU("Dynamic Diffuse Global Illumination");
if (render)

1
Source/Engine/Renderer/GI/DynamicDiffuseGlobalIllumination.h
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@@ -22,7 +22,6 @@ public:
float ProbeHistoryWeight;
float RayMaxDistance;
float IndirectLightingIntensity;
Float4 RaysRotation;
Float3 ViewPos;
uint32 RaysCount;
Float3 FallbackIrradiance;

2
Source/Engine/Renderer/GI/GlobalSurfaceAtlasPass.cpp
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@@ -742,7 +742,7 @@ bool GlobalSurfaceAtlasPass::Render(RenderContext& renderContext, GPUContext* co
return true;
memUsage += surfaceAtlasData.ChunksBuffer->GetMemoryUsage();
}
LOG(Info, "Global Surface Atlas resolution: {0}, memory usage: {1} MB", resolution, memUsage / 1024 / 1024);
LOG(Info, "Global Surface Atlas resolution: {0}, memory usage: {1} MB", resolution, memUsage / (1024 * 1024));
}
for (SceneRendering* scene : renderContext.List->Scenes)
surfaceAtlasData.ListenSceneRendering(scene);

2
Source/Engine/Renderer/GlobalSignDistanceFieldPass.cpp
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@@ -764,7 +764,7 @@ bool GlobalSignDistanceFieldPass::Render(RenderContext& renderContext, GPUContex
}
}
uint64 memoryUsage = sdfData.Texture->GetMemoryUsage() + sdfData.TextureMip->GetMemoryUsage();
LOG(Info, "Global SDF memory usage: {0} MB", memoryUsage / 1024 / 1024);
LOG(Info, "Global SDF memory usage: {0} MB", memoryUsage / (1024 * 1024));
}
if (sdfData.Origin != renderContext.View.Origin)
{