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GS-metal: Automatically adjust color compensation based on rgb value for hw blend clr3 case. 

Auto adjust when any color is higher than 128 ( 1.0f) to get more accurate color results.
This commit is contained in:
lightningterror 2023-03-06 02:40:49 +01:00
parent b33242830e
commit 1382fe9c6c
1 changed files with 7 additions and 2 deletions
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9
pcsx2/GS/Renderers/Metal/tfx.metal
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@ -927,8 +927,13 @@ struct PSMain
else if (PS_CLR_HW == 3) else if (PS_CLR_HW == 3)
{ {
// Needed for Cs*Ad, Cs*Ad + Cd, Cd - Cs*Ad // Needed for Cs*Ad, Cs*Ad + Cd, Cd - Cs*Ad
// Multiply Color.rgb by (255/128) to compensate for wrong Ad/255 value // Multiply Color.rgb by (255/128) to compensate for wrong Ad/255 value when rgb are below 128.
Color.rgb *= (255.f / 128.f); // When any color channel is higher than 128 then adjust the compensation automatically
// to give us more accurate colors, otherwise they will be wrong.
// The higher the value (>128) the lower the compensation will be.
float max_color = max(max(Color.r, Color.g), Color.b);
float color_compensate = 255.f / max(128.f, max_color);
Color.rgb *= float3(color_compensate);
} }
} }
} }