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OpenGL2: Set cubemap mip selection to match output from ggxcc.

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This commit is contained in:
SmileTheory 2016-06-08 03:36:15 -07:00
parent e0b2256043
commit a40588c8b9
2 changed files with 17 additions and 3 deletions
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14
code/renderergl2/tr_glsl.c
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@ -325,6 +325,20 @@ static void GLSL_GetShaderHeader( GLenum shaderType, const GLcharARB *extra, cha
if (r_pbr->integer)
Q_strcat(dest, size, "#define USE_PBR\n");
if (r_cubeMapping->integer)
{
int cubeMipSize = r_cubemapSize->integer;
int numRoughnessMips = 0;
while (cubeMipSize)
{
cubeMipSize >>= 1;
numRoughnessMips++;
}
numRoughnessMips = MAX(1, numRoughnessMips - 2);
Q_strcat(dest, size, va("#define ROUGHNESS_MIPS float(%d)\n", numRoughnessMips));
}
if (extra)
{
Q_strcat(dest, size, extra);