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Adjust 0e76585709 to not affect depth

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This commit is contained in:
Wojtek Figat
2025-12-19 00:08:24 +01:00
parent 0e76585709
commit c2c92eba82
2 changed files with 11 additions and 9 deletions
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11
Source/Shaders/GI/DDGI.hlsl
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@@ -168,7 +168,7 @@ float3 SampleDDGIIrradianceCascade(DDGIData data, Texture2D<snorm float4> probes
// Loop over the closest probes to accumulate their contributions
float4 irradiance = float4(0, 0, 0, 0);
const int3 SearchAxisMasks[3] = { int3(1, 0, 0), int3(0, 1, 0), int3(0, 0, 1) };
const int3 SearchAxes[3] = { int3(1, 0, 0), int3(0, 1, 0), int3(0, 0, 1) };
for (uint i = 0; i < 8; i++)
{
uint3 probeCoordsOffset = uint3(i, i >> 1, i >> 2) & 1;
@@ -182,10 +182,11 @@ float3 SampleDDGIIrradianceCascade(DDGIData data, Texture2D<snorm float4> probes
{
// Search nearby probes to find any nearby GI sample
for (int searchDistance = 1; searchDistance < 3 && probeState == DDGI_PROBE_STATE_INACTIVE; searchDistance++)
{
for (uint searchAxis = 0; searchAxis < 3; searchAxis++)
{
int searchAxisDir = probeCoordsOffset[searchAxis] ? 1 : -1;
int3 searchCoordsOffset = SearchAxisMasks[searchAxis] * searchAxisDir * searchDistance;
int searchAxisSign = probeCoordsOffset[searchAxis] ? 1 : -1;
int3 searchCoordsOffset = SearchAxes[searchAxis] * (searchAxisSign * searchDistance);
uint3 searchCoords = clamp((int3)probeCoords + searchCoordsOffset, int3(0, 0, 0), (int3)probeCoordsEnd);
uint searchIndex = GetDDGIScrollingProbeIndex(data, cascadeIndex, searchCoords);
float4 searchData = LoadDDGIProbeData(data, probesData, cascadeIndex, searchIndex);
@@ -200,6 +201,7 @@ float3 SampleDDGIIrradianceCascade(DDGIData data, Texture2D<snorm float4> probes
break;
}
}
}
if (probeState == DDGI_PROBE_STATE_INACTIVE)
continue;
}
@@ -232,8 +234,7 @@ float3 SampleDDGIIrradianceCascade(DDGIData data, Texture2D<snorm float4> probes
// Adjust weight curve to inject a small portion of light
const float minWeightThreshold = 0.2f;
if (weight < minWeightThreshold)
weight *= Square(weight) / Square(minWeightThreshold);
if (weight < minWeightThreshold) weight *= (weight * weight) * (1.0f / (minWeightThreshold * minWeightThreshold));
// Calculate trilinear weights based on the distance to each probe to smoothly transition between grid of 8 probes
float3 trilinear = lerp(1.0f - biasAlpha, biasAlpha, (float3)probeCoordsOffset);

9
Source/Shaders/GI/DDGI.shader
View File

@@ -703,16 +703,17 @@ void CS_UpdateProbes(uint3 GroupThreadId : SV_GroupThreadID, uint3 GroupId : SV_
//result.rgb = previous + (irradianceDelta * 0.25f);
}
result = float4(lerp(result.rgb, previous.rgb, historyWeight), 1.0f);
// Apply quantization error to reduce yellowish artifacts due to R11G11B10 format
float noise = InterleavedGradientNoise(octahedralCoords, FrameIndexMod8);
result.rgb = QuantizeColor(result.rgb, noise, QuantizationError);
#else
result = float4(lerp(result.rg, previous.rg, historyWeight), 0.0f, 1.0f);
#endif
// Write output irradiance (apply quantization error to reduce yellowish artifacts due to R11G11B10 format)
float noise = InterleavedGradientNoise(octahedralCoords, FrameIndexMod8);
result.rgb = QuantizeColor(result.rgb, noise, QuantizationError);
RWOutput[outputCoords] = result;
GroupMemoryBarrierWithGroupSync();
uint2 baseCoords = GetDDGIProbeTexelCoords(DDGI, CascadeIndex, probeIndex) * (DDGI_PROBE_RESOLUTION + 2);
#if DDGI_PROBE_UPDATE_MODE == 0