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Fixed an issue where grayscale conversion was not done correctly for BGRA textures.

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This commit is contained in:
Leon Styhre 2022-10-30 16:31:43 +01:00
parent 86772dbf6d
commit ef671580c3
1 changed files with 6 additions and 1 deletions
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7
resources/shaders/glsl/core.glsl
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@ -99,7 +99,12 @@ void main()
// Saturation. // Saturation.
if (saturation != 1.0) { if (saturation != 1.0) {
vec3 grayscale = vec3(dot(sampledColor.rgb, vec3(0.34, 0.55, 0.11))); vec3 grayscale;
// Premultiplied textures are all in BGRA format.
if (0x0u != (shaderFlags & 0x01u))
grayscale = vec3(dot(sampledColor.bgr, vec3(0.34, 0.55, 0.11)));
else
grayscale = vec3(dot(sampledColor.rgb, vec3(0.34, 0.55, 0.11)));
vec3 blendedColor = mix(grayscale, sampledColor.rgb, saturation); vec3 blendedColor = mix(grayscale, sampledColor.rgb, saturation);
sampledColor = vec4(blendedColor, sampledColor.a); sampledColor = vec4(blendedColor, sampledColor.a);
} }