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Minor shader optimization

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If the mipmap level is 0.0, we only need to run texBiLinear() for the highest quality texture mipmap
Adds around 10-20% more performance in Daytona 2
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gm-matthew 2024-06-04 16:40:36 +01:00 committed by Bart Trzynadlowski
parent a6466b353d
commit f30a8ee2a8
1 changed files with 13 additions and 6 deletions
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11
Src/Graphics/New3D/R3DShaderCommon.h
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@ -249,15 +249,22 @@ vec4 textureR3D(usampler2D texSampler, ivec2 wrapMode, ivec2 texSize, ivec2 texP
int iLevel = int(fLevel); int iLevel = int(fLevel);
ivec2 texPos0 = GetTexturePosition(iLevel,texPos); ivec2 texPos0 = GetTexturePosition(iLevel,texPos);
ivec2 texPos1 = GetTexturePosition(iLevel+1,texPos);
ivec2 texSize0 = GetTextureSize(iLevel, texSize); ivec2 texSize0 = GetTextureSize(iLevel, texSize);
if (fLevel > 0)
{
ivec2 texPos1 = GetTexturePosition(iLevel+1,texPos);
ivec2 texSize1 = GetTextureSize(iLevel+1, texSize); ivec2 texSize1 = GetTextureSize(iLevel+1, texSize);
vec4 texLevel0 = texBiLinear(texSampler, wrapMode, vec2(texSize0), texPos0, texCoord); vec4 texLevel0 = texBiLinear(texSampler, wrapMode, vec2(texSize0), texPos0, texCoord);
vec4 texLevel1 = texBiLinear(texSampler, wrapMode, vec2(texSize1), texPos1, texCoord); vec4 texLevel1 = texBiLinear(texSampler, wrapMode, vec2(texSize1), texPos1, texCoord);
return mix(texLevel0, texLevel1, fract(fLevel)); // linear blend between our mipmap levels return mix(texLevel0, texLevel1, fract(fLevel)); // linear blend between our mipmap levels
}
else
{
return texBiLinear(texSampler, wrapMode, vec2(texSize0), texPos0, texCoord);
}
} }
vec4 GetTextureValue() vec4 GetTextureValue()