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Fix GlobalSDF tracing artifacts in reflections by using occlusion bias relative to each cascade voxel size

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#2743
This commit is contained in:
Wojtek Figat
2024-08-15 12:04:39 +02:00
parent 75a97a30fe
commit e7f1afdfaa
3 changed files with 6 additions and 8 deletions
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5
Content/Editor/MaterialTemplates/Features/SDFReflections.hlsl
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@@ -21,9 +21,8 @@ bool TraceSDFSoftwareReflections(GBufferSample gBuffer, float3 reflectWS, out fl
{ {
GlobalSDFTrace sdfTrace; GlobalSDFTrace sdfTrace;
float maxDistance = GLOBAL_SDF_WORLD_SIZE; float maxDistance = GLOBAL_SDF_WORLD_SIZE;
float selfOcclusionBias = GlobalSDF.CascadeVoxelSize[0]; sdfTrace.Init(gBuffer.WorldPos, reflectWS, 0.0f, maxDistance);
sdfTrace.Init(gBuffer.WorldPos + gBuffer.Normal * selfOcclusionBias, reflectWS, 0.0f, maxDistance); GlobalSDFHit sdfHit = RayTraceGlobalSDF(GlobalSDF, GlobalSDFTex, GlobalSDFMip, sdfTrace, 2.0f);
GlobalSDFHit sdfHit = RayTraceGlobalSDF(GlobalSDF, GlobalSDFTex, GlobalSDFMip, sdfTrace);
if (sdfHit.IsHit()) if (sdfHit.IsHit())
{ {
float3 hitPosition = sdfHit.GetHitPosition(sdfTrace); float3 hitPosition = sdfHit.GetHitPosition(sdfTrace);

BIN
Content/Shaders/SSR.flax (Stored with Git LFS)
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5
Source/Shaders/SSR.shader
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@@ -140,9 +140,8 @@ float4 PS_RayTracePass(Quad_VS2PS input) : SV_Target0
GlobalSDFTrace sdfTrace; GlobalSDFTrace sdfTrace;
float maxDistance = GLOBAL_SDF_WORLD_SIZE; float maxDistance = GLOBAL_SDF_WORLD_SIZE;
float selfOcclusionBias = GlobalSDF.CascadeVoxelSize[0]; sdfTrace.Init(gBuffer.WorldPos, reflectWS, 0.0f, maxDistance);
sdfTrace.Init(gBuffer.WorldPos + gBuffer.Normal * selfOcclusionBias, reflectWS, 0.0f, maxDistance); GlobalSDFHit sdfHit = RayTraceGlobalSDF(GlobalSDF, GlobalSDFTex, GlobalSDFMip, sdfTrace, 2.0f);
GlobalSDFHit sdfHit = RayTraceGlobalSDF(GlobalSDF, GlobalSDFTex, GlobalSDFMip, sdfTrace);
if (sdfHit.IsHit()) if (sdfHit.IsHit())
{ {
float3 hitPosition = sdfHit.GetHitPosition(sdfTrace); float3 hitPosition = sdfHit.GetHitPosition(sdfTrace);