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Add improved Global Surface Atlas lighting at far cascades and cascade borders

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This commit is contained in:
Wojtek Figat
2024-06-04 10:53:41 +02:00
parent abdbd1ee64
commit 0620310f4f
2 changed files with 3 additions and 5 deletions
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4
Source/Engine/Renderer/GI/DynamicDiffuseGlobalIllumination.cpp
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@@ -46,8 +46,7 @@ GPU_CB_STRUCT(Data0 {
GlobalSignDistanceFieldPass::ConstantsData GlobalSDF;
GlobalSurfaceAtlasPass::ConstantsData GlobalSurfaceAtlas;
ShaderGBufferData GBuffer;
float Padding0;
float ProbesDistanceLimit;
Float2 Padding0;
float ResetBlend;
float TemporalTime;
Int4 ProbeScrollClears[4];
@@ -471,7 +470,6 @@ bool DynamicDiffuseGlobalIlluminationPass::RenderInner(RenderContext& renderCont
data.DDGI = ddgiData.Result.Constants;
data.GlobalSDF = bindingDataSDF.Constants;
data.GlobalSurfaceAtlas = bindingDataSurfaceAtlas.Constants;
data.ProbesDistanceLimit = 1.05f; // TODO: expose to be configurable?
data.ResetBlend = clear ? 1.0f : 0.0f;
for (int32 cascadeIndex = 0; cascadeIndex < cascadesCount; cascadeIndex++)
{

4
Source/Shaders/GI/DDGI.shader
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@@ -28,8 +28,7 @@ DDGIData DDGI;
GlobalSDFData GlobalSDF;
GlobalSurfaceAtlasData GlobalSurfaceAtlas;
GBufferData GBuffer;
float Padding0;
float ProbesDistanceLimit;
float2 Padding0;
float ResetBlend;
float TemporalTime;
int4 ProbeScrollClears[4];
@@ -101,6 +100,7 @@ void CS_Classify(uint3 DispatchThreadId : SV_DispatchThreadID)
float prevProbesSpacing = DDGI.ProbesOriginAndSpacing[prevCascade].w;
float3 prevProbesOrigin = DDGI.ProbesScrollOffsets[prevCascade].xyz * prevProbesSpacing + DDGI.ProbesOriginAndSpacing[prevCascade].xyz;
float3 prevProbesExtent = (DDGI.ProbesCounts - 1) * (prevProbesSpacing * 0.5f);
prevProbesExtent -= probesSpacing; // Apply safe margin to allow probes on cascade edges
float prevCascadeWeight = Min3(prevProbesExtent - abs(probeBasePosition - prevProbesOrigin));
if (prevCascadeWeight > 0.1f)
{