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Added AdvanceScope;

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Added energy conservation to diffuse lighting;
Clean up shader properties;
This commit is contained in:
Misaki
2025-03-23 21:30:34 +09:00
parent ea3e83157c
commit b205c1523d
14 changed files with 97 additions and 321 deletions
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9
Runtime/Shaders/Includes/Lighting/UtsLightEvaluation.hlsl
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@@ -34,8 +34,9 @@ float GetColorAttenuation(float3 lightColor)
float3 GetLimitedLightColor(float3 lightColor)
{
lightColor = ApplyCurrentExposureMultiplier(lightColor);
float3 result = lerp(lightColor, saturate(lightColor), _Is_Filter_LightColor);
// In a hemisphere, The engery of full radiance is L * 2pi, and the engery of lambert is L * pi. We multiply by 0.5 here to apply the energy conservation.
lightColor = ApplyCurrentExposureMultiplier(lightColor) * 0.5;
float3 result = lerp(lightColor, normalize(lightColor), _ClampLightColor);
return result;
}
@@ -57,7 +58,7 @@ DirectLighting UtsEvaluateBSDF_Directional(LightLoopContext lightLoopContext, Po
// TODO: Colored shadow will overwrite the first and second shading diffuse color
//float3 shadowColor = ComputeShadowColor(shadow, lightData.shadowTint, lightData.penumbraTint);
float4 lightColor = EvaluateLight_Directional(lightLoopContext, posInput, lightData);
lightColor.rgb = GetLimitedLightColor(lightColor.rgb * lightColor.a * _Light_Intensity_Multiplier);
lightColor.rgb = GetLimitedLightColor(lightColor.rgb * lightColor.a * _LightIntensityMultiplier);
UtsClampRoughness(preLightData, bsdfData, lightData.minRoughness);
@@ -86,7 +87,7 @@ DirectLighting UtsEvaluateBSDF_Punctual(LightLoopContext lightLoopContext, Posit
// TODO: Colored shadow will overwrite the first and second shading diffuse color
//float3 shadowColor = ComputeShadowColor(shadow, lightData.shadowTint, lightData.penumbraTint);
float4 lightColor = EvaluateLight_Punctual(lightLoopContext, posInput, lightData, L, distances);
lightColor.rgb = GetLimitedLightColor(lightColor.rgb * lightColor.a * _Light_Intensity_Multiplier);
lightColor.rgb = GetLimitedLightColor(lightColor.rgb * lightColor.a * _LightIntensityMultiplier);
UtsClampRoughness(preLightData, bsdfData, lightData.minRoughness);

3
Runtime/Shaders/Includes/Lighting/UtsLightLoop.hlsl
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@@ -87,8 +87,7 @@ void UtsLightLoop(FragInputs fragInputs, PositionInputs posInput, UtsBSDFData bs
float3 L = -light.forward;
// Is it worth sampling the shadow map?
if ((light.lightDimmer > 0) && (light.shadowDimmer > 0) && // Note: Volumetric can have different dimmer, thus why we test it here
dot(bsdfData.normalWS, L) > 0.0)
if ((light.lightDimmer > 0) && (light.shadowDimmer > 0))
{
context.shadowValue = GetDirectionalShadowAttenuation(context.shadowContext,
posInput.positionSS, posInput.positionWS + L * _ShadowDistanceBias, UtsGetShadowNormal(bsdfData),

6
Runtime/Shaders/Includes/Lighting/UtsMaterialEvaluation.hlsl
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@@ -54,7 +54,7 @@ float3 ComputeSpecularTerm(UtsBSDFData bsdfData, PreLightData preLightData, floa
#elif _PBR_MODE_HAIR
float3 t = ShiftTangent(bsdfData.bitangentWS, N, bsdfData.anisotropy);
float specularExponent = RoughnessToBlinnPhongSpecularExponent(PerceptualRoughnessToRoughness(bsdfData.coatRoughness));
float specularExponent = RoughnessToBlinnPhongSpecularExponent(PerceptualRoughnessToRoughness(bsdfData.perceptualRoughness));
DV = D_KajiyaKay(t, H, specularExponent);
float normalizeSpec = DV * rcp(specularExponent + 2) * 2 * PI;
@@ -69,9 +69,7 @@ float3 ComputeSpecularTerm(UtsBSDFData bsdfData, PreLightData preLightData, floa
//return specTerm * ColorSpaceDielectricSpec.rgb * clampedNdotL;
#endif
specTerm = DV * preLightData.specularFGD;
specTerm = specTerm * clampedNdotL;
specTerm = DV * preLightData.specularFGD * clampedNdotL;
return specTerm;
#endif
}