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Remove disabling temporal reprojection from Volumetric Fog

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This commit is contained in:
Wojciech Figat
2022-06-14 16:56:53 +02:00
parent 0729ffdafe
commit fc96620045
3 changed files with 11 additions and 44 deletions
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27
Source/Shaders/VolumetricFog.shader
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@@ -185,10 +185,8 @@ float ComputeVolumeShadowing(float3 worldPosition, bool isSpotLight)
#endif
META_PS(true, FEATURE_LEVEL_SM5)
META_PERMUTATION_2(USE_TEMPORAL_REPROJECTION=0, USE_SHADOW=0)
META_PERMUTATION_2(USE_TEMPORAL_REPROJECTION=1, USE_SHADOW=0)
META_PERMUTATION_2(USE_TEMPORAL_REPROJECTION=0, USE_SHADOW=1)
META_PERMUTATION_2(USE_TEMPORAL_REPROJECTION=1, USE_SHADOW=1)
META_PERMUTATION_1(USE_SHADOW=0)
META_PERMUTATION_1(USE_SHADOW=1)
float4 PS_InjectLight(Quad_GS2PS input) : SV_Target0
{
uint3 gridCoordinate = uint3(input.Vertex.Position.xy, input.LayerIndex);
@@ -197,18 +195,12 @@ float4 PS_InjectLight(Quad_GS2PS input) : SV_Target0
if (!all(gridCoordinate < GridSizeInt))
return 0;
#if USE_TEMPORAL_REPROJECTION
float3 historyUV = GetVolumeUV(GetCellPositionWS(gridCoordinate, 0.5f), PrevWorldToClip);
float historyAlpha = HistoryWeight;
FLATTEN
if (any(historyUV < 0) || any(historyUV > 1))
{
historyAlpha = 0;
}
uint samplesCount = historyAlpha < 0.001f ? MissedHistorySamplesCount : 1;
#else
uint samplesCount = 1;
#endif
float NoL = 0;
float distanceAttenuation = 1;
@@ -298,28 +290,19 @@ TextureCube SkyLightImage : register(t5);
#define THREADGROUP_SIZE 4
META_CS(true, FEATURE_LEVEL_SM5)
META_PERMUTATION_1(USE_TEMPORAL_REPROJECTION=0)
META_PERMUTATION_1(USE_TEMPORAL_REPROJECTION=1)
[numthreads(THREADGROUP_SIZE, THREADGROUP_SIZE, THREADGROUP_SIZE)]
void CS_LightScattering(uint3 GroupId : SV_GroupID, uint3 DispatchThreadId : SV_DispatchThreadID, uint3 GroupThreadId : SV_GroupThreadID)
{
uint3 gridCoordinate = DispatchThreadId;
float3 lightScattering = 0;
uint samplesCount = 1;
#if USE_TEMPORAL_REPROJECTION
float3 historyUV = GetVolumeUV(GetCellPositionWS(gridCoordinate, 0.5f), PrevWorldToClip);
float historyAlpha = HistoryWeight;
// Discard history if it lays outside the current view
FLATTEN
if (any(historyUV < 0) || any(historyUV > 1))
{
historyAlpha = 0;
}
samplesCount = historyAlpha < 0.001f && all(gridCoordinate < GridSizeInt) ? MissedHistorySamplesCount : 1;
#endif
for (uint sampleIndex = 0; sampleIndex < samplesCount; sampleIndex++)
{
@@ -363,15 +346,13 @@ void CS_LightScattering(uint3 GroupId : SV_GroupID, uint3 DispatchThreadId : SV_
float extinction = materialScatteringAndAbsorption.w + Luminance(materialScatteringAndAbsorption.xyz);
float3 materialEmissive = VBufferB[gridCoordinate].xyz;
float4 scatteringAndExtinction = float4(lightScattering * materialScatteringAndAbsorption.xyz + materialEmissive, extinction);
#if USE_TEMPORAL_REPROJECTION
BRANCH
if (historyAlpha > 0)
{
float4 historyScatteringAndExtinction = LightScatteringHistory.SampleLevel(SamplerLinearClamp, historyUV, 0);
scatteringAndExtinction = lerp(scatteringAndExtinction, historyScatteringAndExtinction, historyAlpha);
}
#endif
if (all(gridCoordinate < GridSizeInt))
{