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Fix shadows sampling error in shader due to incorrect sampler used

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#3000
This commit is contained in:
Wojtek Figat
2025-03-08 14:29:17 +01:00
parent fef967d4a0
commit 7d79dbac40
1 changed files with 8 additions and 6 deletions
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14
Source/Shaders/ShadowsSampling.hlsl
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@@ -11,11 +11,13 @@
#endif
#if FEATURE_LEVEL >= FEATURE_LEVEL_SM5
#define SAMPLE_SHADOW_MAP(shadowMap, shadowUV, sceneDepth) shadowMap.SampleCmpLevelZero(ShadowSamplerLinear, shadowUV, sceneDepth)
#define SAMPLE_SHADOW_MAP_OFFSET(shadowMap, shadowUV, texelOffset, sceneDepth) shadowMap.SampleCmpLevelZero(ShadowSamplerLinear, shadowUV, sceneDepth, texelOffset)
#define SAMPLE_SHADOW_SAMPLER ShadowSamplerLinear
#define SAMPLE_SHADOW_MAP(shadowMap, shadowUV, sceneDepth) shadowMap.SampleCmpLevelZero(SAMPLE_SHADOW_SAMPLER, shadowUV, sceneDepth)
#define SAMPLE_SHADOW_MAP_OFFSET(shadowMap, shadowUV, texelOffset, sceneDepth) shadowMap.SampleCmpLevelZero(SAMPLE_SHADOW_SAMPLER, shadowUV, sceneDepth, texelOffset)
#else
#define SAMPLE_SHADOW_MAP(shadowMap, shadowUV, sceneDepth) (sceneDepth < shadowMap.SampleLevel(SamplerLinearClamp, shadowUV, 0).r)
#define SAMPLE_SHADOW_MAP_OFFSET(shadowMap, shadowUV, texelOffset, sceneDepth) (sceneDepth < shadowMap.SampleLevel(SamplerLinearClamp, shadowUV, 0, texelOffset).r)
#define SAMPLE_SHADOW_SAMPLER SamplerLinearClamp
#define SAMPLE_SHADOW_MAP(shadowMap, shadowUV, sceneDepth) (sceneDepth < shadowMap.SampleLevel(SAMPLE_SHADOW_SAMPLER, shadowUV, 0).r)
#define SAMPLE_SHADOW_MAP_OFFSET(shadowMap, shadowUV, texelOffset, sceneDepth) (sceneDepth < shadowMap.SampleLevel(SAMPLE_SHADOW_SAMPLER, shadowUV, 0, texelOffset).r)
#endif
float4 GetShadowMask(ShadowSample shadow)
@@ -276,7 +278,7 @@ ShadowSample SampleDirectionalLightShadow(LightData light, Buffer<float4> shadow
{
float opacity = gBuffer.CustomData.a;
shadowMapUV = GetLightShadowAtlasUV(shadow, shadowTile, gBuffer.WorldPos, shadowPosition);
float shadowMapDepth = shadowMap.SampleLevel(SamplerLinearClamp, shadowMapUV, 0).r;
float shadowMapDepth = shadowMap.SampleLevel(SAMPLE_SHADOW_SAMPLER, shadowMapUV, 0).r;
result.TransmissionShadow = CalculateSubsurfaceOcclusion(opacity, shadowPosition.z, shadowMapDepth);
result.TransmissionShadow = PostProcessShadow(shadow, result.TransmissionShadow);
}
@@ -337,7 +339,7 @@ ShadowSample SampleLocalLightShadow(LightData light, Buffer<float4> shadowsBuffe
{
float opacity = gBuffer.CustomData.a;
shadowMapUV = GetLightShadowAtlasUV(shadow, shadowTile, gBuffer.WorldPos, shadowPosition);
float shadowMapDepth = shadowMap.SampleLevel(SamplerLinearClamp, shadowMapUV, 0).r;
float shadowMapDepth = shadowMap.SampleLevel(SAMPLE_SHADOW_SAMPLER, shadowMapUV, 0).r;
result.TransmissionShadow = CalculateSubsurfaceOcclusion(opacity, shadowPosition.z, shadowMapDepth);
result.TransmissionShadow = PostProcessShadow(shadow, result.TransmissionShadow);
}