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update clearcoat ibl doc #9892

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Merged
pixelflinger merged 2 commits into from
Apr 14, 2026
+3 −3
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update clearcoat ibl doc #9892

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d87ff27
update clearcoat ibl doc
kai-z99 Apr 10, 2026
ff7d5cb
Fix direct lighting computation
kai-z99 Apr 14, 2026
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6 changes: 3 additions & 3 deletions docs/Filament.md.html
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Original file line number Diff line number Diff line change
Expand Up @@ -892,7 +892,7 @@
float Frc = (Dc * Vc) * Fc;

// account for energy loss in the base layer
return color * ((Fd + Fr * (1.0 - Fc)) * (1.0 - Fc) + Frc);
return color * ((Fd + Fr) * (1.0 - Fc) + Frc);
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[Listing [clearCoatBRDF]: Implementation of the clear coat BRDF in GLSL]
Expand Down Expand Up @@ -2362,8 +2362,8 @@
float Fc = F_Schlick(0.04, 1.0, clearCoat_NoV) * clearCoat;
// base layer attenuation for energy compensation
iblDiffuse *= 1.0 - Fc;
iblSpecular *= sq(1.0 - Fc);
iblSpecular += specularIBL(r, clearCoatPerceptualRoughness) * Fc;
iblSpecular *= 1.0 - Fc;
iblSpecular += evaluateSpecularIBL(r, clearCoatPerceptualRoughness) * Fc;
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[Listing [clearCoatIBL]: GLSL implementation of the clear coat specular lobe for image-based lighting]

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