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Optimise lighting.glsl for Mesa users.

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AnyOldName3 2018-08-14 21:35:23 +01:00
parent 3b3721897d
commit 1098bd2467
1 changed files with 3 additions and 3 deletions
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6
files/shaders/lighting.glsl
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@ -35,12 +35,12 @@ vec4 doLighting(vec3 viewPos, vec3 viewNormal, vec4 vertexColor, out vec3 shadow
vec3 diffuseLight, ambientLight; vec3 diffuseLight, ambientLight;
perLight(ambientLight, diffuseLight, 0, viewPos, viewNormal, diffuse, ambient); perLight(ambientLight, diffuseLight, 0, viewPos, viewNormal, diffuse, ambient);
#if PER_PIXEL_LIGHTING #if PER_PIXEL_LIGHTING
lightResult.xyz += ambientLight + diffuseLight * shadowing; lightResult.xyz += diffuseLight * shadowing - diffuseLight; // This light gets added a second time in the loop to fix Mesa users' slowdown, so we need to negate its contribution here.
#else #else
shadowDiffuse = diffuseLight; shadowDiffuse = diffuseLight;
lightResult.xyz += ambientLight; lightResult.xyz -= shadowDiffuse; // This light gets added a second time in the loop to fix Mesa users' slowdown, so we need to negate its contribution here.
#endif #endif
for (int i=1; i<MAX_LIGHTS; ++i) for (int i=0; i<MAX_LIGHTS; ++i)
{ {
perLight(ambientLight, diffuseLight, i, viewPos, viewNormal, diffuse, ambient); perLight(ambientLight, diffuseLight, i, viewPos, viewNormal, diffuse, ambient);
lightResult.xyz += ambientLight + diffuseLight; lightResult.xyz += ambientLight + diffuseLight;