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Applied Maik's patch to enable more subtle normalmap distortions on cubemapped surfaces

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Marco Cawthorne 2019-03-23 18:45:41 +01:00
parent 17a8d0cb9a
commit 76a3c7e3c3
1 changed files with 10 additions and 0 deletions
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10
valve/data.pk3dir/glsl/defaultwall.glsl
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@ -46,7 +46,17 @@ varying mat3 invsurface;
#ifdef REFLECTCUBE
#ifdef BUMP
#ifndef FLATTENNORM
vec3 normal_f = normalize(texture2D(s_normalmap, tex_c).rgb - 0.5);
#else
// For very flat surfaces and gentle surface distortions, the 8-bit precision per channel in the normalmap
// can be insufficient. This is a hack to instead have very wobbly normalmaps that make use of the 8 bits
// and then scale the wobblyness back once in the floating-point domain.
vec3 normal_f = texture2D(s_normalmap, tex_c).rgb - 0.5;
normal_f.x *= 0.0625;
normal_f.y *= 0.0625;
normal_f = normalize(normal_f);
#endif
#else
vec3 normal_f = vec3(0, 0, 1);
#endif