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Fix division by zero in clearcoat

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Prevents the clearcoat model from generating NaN values at grazing angles
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Mingxi Zhang 2025-07-07 21:38:49 +08:00 • committed by Mingxi Zhang
parent 4d1f26e1fd
commit 2096e4c007
2 changed files with 2 additions and 2 deletions
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drivers/gles3/shaders/scene.glsl
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@ -1448,7 +1448,7 @@ void light_compute(vec3 N, vec3 L, vec3 V, float A, vec3 light_color, bool is_di
float cLdotH5 = SchlickFresnel(cLdotH);
#endif
float Dr = D_GGX(ccNdotH, mix(0.001, 0.1, clearcoat_roughness));
float Gr = 0.25 / (cLdotH * cLdotH);
float Gr = 0.25 / (cLdotH * cLdotH + 1e-4);
float Fr = mix(.04, 1.0, cLdotH5);
float clearcoat_specular_brdf_NL = clearcoat * Gr * Fr * Dr * cNdotL;