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Fixed the engergy conservation problem when pbr mode is toon.

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Misaki
2025-05-13 21:35:52 +09:00
parent 961db806e9
commit d19322b768
11 changed files with 72 additions and 53 deletions
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55
Runtime/Shaders/Includes/Common/UtsHead.hlsl
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@@ -25,12 +25,12 @@
struct UTSSurfaceData
{
uint surfaceFeatures;
real3 baseColor;
real3 firstShadingColor;
real3 secondShadingColor;
real alpha;
float3 normalWS;
real perceptualSmoothness;
real metallic;
@@ -40,35 +40,35 @@ struct UTSSurfaceData
float3 geomNormalWS;
float3 tangentWS;
real4 subsurfaceColor;
real anisotropy;
};
struct UtsBSDFData
{
uint surfaceFeatures;
real3 diffuseColor;
real3 firstShadingDiffuseColor;
real3 secondShadingDiffuseColor;
real3 fresnel0;
real fresnel90;
real reflectivity;
real ambientOcclusion;
real specularOcclusion;
real perceptualRoughness;
real3 subsurfaceColor;
float3 geomNormalWS;
float3 normalWS;
float3 tangentWS;
float3 bitangentWS;
real anisotropy;
real roughnessT;
real roughnessB;
@@ -103,7 +103,7 @@ UTSSurfaceData GetUTSSurfaceData(FragInputs input, float3 V)
UTSSurfaceData output;
output.surfaceFeatures = _SurfaceFeatures;
float4 mainTexture = SAMPLE_TEXTURE2D(_BaseColorMap, sampler_BaseColorMap, TRANSFORM_TEX(input.texCoord0, _BaseColorMap));
output.baseColor = mainTexture.rgb * _BaseColor.rgb;
output.alpha = mainTexture.a;
@@ -173,20 +173,22 @@ UTSSurfaceData GetUTSSurfaceData(FragInputs input, float3 V)
smoothness *=_BSDFContribution;
#endif
#ifdef _PBR_Mode_TOON
// TODO: Specular color is not handle correctly.
#ifdef _PBR_MODE_TOON
metallic = 0.0;
specularColor = _SpecularColor;
#ifdef _SPECULARCOLORMAP
specularColor = SAMPLE_TEXTURE2D(_SpecularColorMap, sampler_SpecularColorMap, TRANSFORM_TEX(input.texCoord0, _BaseColorMap)).rgb * _SpecularColor;
specularColor *= SAMPLE_TEXTURE2D(_SpecularColorMap, sampler_SpecularColorMap, TRANSFORM_TEX(input.texCoord0, _BaseColorMap)).rgb;
#endif
specularColor = GetSpecularColor(output.baseColor, metallic);
#endif
output.metallic = metallic;
output.ambientOcclusion = ao;
output.specularOcclusion = GetSpecularOcclusionFromAmbientOcclusion(dot(normalWS, V), ao, PerceptualRoughnessToRoughness(1 - smoothness));
output.perceptualSmoothness = smoothness;
output.normalWS = normalWS;
output.specularColor = specularColor;
output.geomNormalWS = input.tangentToWorld[2];
output.tangentWS = Orthonormalize(input.tangentToWorld[0].rgb, normalWS);
@@ -194,7 +196,7 @@ UTSSurfaceData GetUTSSurfaceData(FragInputs input, float3 V)
output.subsurfaceColor = 0.0;
output.anisotropy = anisotropy;
return output;
}
@@ -203,13 +205,20 @@ UtsBSDFData ConvertUTSSurfaceDataToUTSBSDFData(UTSSurfaceData surfaceData)
UtsBSDFData output;
output.surfaceFeatures = surfaceData.surfaceFeatures;
output.diffuseColor = UtsComputeDiffuseColor(surfaceData.baseColor, surfaceData.metallic, 0.05);
output.firstShadingDiffuseColor = UtsComputeDiffuseColor(surfaceData.firstShadingColor, surfaceData.metallic, 0.05);
output.secondShadingDiffuseColor = UtsComputeDiffuseColor(surfaceData.secondShadingColor, surfaceData.metallic, 0.05);
#if _PBR_MODE_TOON
float m = Max3(surfaceData.specularColor.r, surfaceData.specularColor.g, surfaceData.specularColor.b);
#else
float m = surfaceData.metallic;
#endif
output.diffuseColor = UtsComputeDiffuseColor(surfaceData.baseColor, m, _Minimal_Diffuse_Contribution);
output.firstShadingDiffuseColor = UtsComputeDiffuseColor(surfaceData.firstShadingColor, m, _Minimal_Diffuse_Contribution);
output.secondShadingDiffuseColor = UtsComputeDiffuseColor(surfaceData.secondShadingColor, m, _Minimal_Diffuse_Contribution);
#if _PBR_MODE_OFF
output.fresnel0 = surfaceData.baseColor;
output.fresnel0 = 0.22;
#elif _PBR_MODE_TOON
output.fresnel0 = surfaceData.specularColor;
#else
output.fresnel0 = ComputeFresnel0(surfaceData.baseColor, surfaceData.metallic, 0.22);
#endif
@@ -229,7 +238,7 @@ UtsBSDFData ConvertUTSSurfaceDataToUTSBSDFData(UTSSurfaceData surfaceData)
output.anisotropy = surfaceData.anisotropy;
ConvertAnisotropyToRoughness(output.perceptualRoughness, surfaceData.anisotropy, output.roughnessT, output.roughnessB);
return output;
}
@@ -243,7 +252,7 @@ PreLightData GetPreLightData_UTS(float3 V, PositionInputs posInput, inout UtsBSD
preLightData.iblPerceptualRoughness = bsdfData.perceptualRoughness;
float clampedNdotV = ClampNdotV(preLightData.NdotV);
// Handle IBL + area light + multiscattering.
// Note: use the not modified by anisotropy iblPerceptualRoughness here.
float specularReflectivity = 1.0;