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return early when LUT Colors == 0

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closes #100
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hizzlekizzle 2019-06-06 22:10:54 -05:00 committed by GitHub
parent fc28962ff5
commit f281a47e5c
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1 changed files with 55 additions and 47 deletions
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8
crt/shaders/guest/lut/lut.slang
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@ -61,6 +61,13 @@ vec4 mixfix(vec4 a, vec4 b, float c)
void main()
{
vec4 imgColor = COMPAT_TEXTURE(Source, vTexCoord.xy);
if (int(TNTC) == 0)
{
FragColor = imgColor;
return;
}
else
{
float red = ( imgColor.r * (LUT_Size - 1.0) + 0.499999 ) / (LUT_Size * LUT_Size);
float green = ( imgColor.g * (LUT_Size - 1.0) + 0.499999 ) / LUT_Size;
float blue1 = (floor( imgColor.b * (LUT_Size - 1.0) ) / LUT_Size) + red;
@ -102,3 +109,4 @@ void main()
FragColor = vec4(mix(imgColor.rgb, res.rgb, min(TNTC,1.0)),1.0);
}
}