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Marginally tidies.

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This commit is contained in:
Thomas Harte 2020-08-22 16:38:36 -04:00
parent 5c6112415a
commit 56c7bd242a
1 changed files with 18 additions and 15 deletions
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33
OSBindings/Mac/Clock Signal/ScanTarget/ScanTarget.metal
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@ -322,22 +322,25 @@ fragment float4 clearFragment() {
// MARK: - Conversion fragment shaders
fragment float4 filterFragment(SourceInterpolator vert [[stage_in]], texture2d<float> texture [[texture(0)]], constant Uniforms &uniforms [[buffer(0)]]) {
#define Sample(x) texture.sample(standardSampler, vert.textureCoordinates + float2(x, 0.0)).rgb
const float3 rawSamples[] = {
Sample(-7), Sample(-6), Sample(-5), Sample(-4), Sample(-3), Sample(-2), Sample(-1),
Sample(0),
Sample(1), Sample(2), Sample(3), Sample(4), Sample(5), Sample(6), Sample(7),
};
#undef Sample
#define Sample(c, o) \
uniforms.firCoefficients[c] * rawSamples[o]
const float3 colour =
uniforms.firCoefficients[0] * texture.sample(standardSampler, vert.textureCoordinates - float2(7.0, 0.0)).rgb +
uniforms.firCoefficients[1] * texture.sample(standardSampler, vert.textureCoordinates - float2(6.0, 0.0)).rgb +
uniforms.firCoefficients[2] * texture.sample(standardSampler, vert.textureCoordinates - float2(5.0, 0.0)).rgb +
uniforms.firCoefficients[3] * texture.sample(standardSampler, vert.textureCoordinates - float2(4.0, 0.0)).rgb +
uniforms.firCoefficients[4] * texture.sample(standardSampler, vert.textureCoordinates - float2(3.0, 0.0)).rgb +
uniforms.firCoefficients[5] * texture.sample(standardSampler, vert.textureCoordinates - float2(2.0, 0.0)).rgb +
uniforms.firCoefficients[6] * texture.sample(standardSampler, vert.textureCoordinates - float2(1.0, 0.0)).rgb +
uniforms.firCoefficients[7] * texture.sample(standardSampler, vert.textureCoordinates).rgb +
uniforms.firCoefficients[6] * texture.sample(standardSampler, vert.textureCoordinates + float2(1.0, 0.0)).rgb +
uniforms.firCoefficients[5] * texture.sample(standardSampler, vert.textureCoordinates + float2(2.0, 0.0)).rgb +
uniforms.firCoefficients[4] * texture.sample(standardSampler, vert.textureCoordinates + float2(3.0, 0.0)).rgb +
uniforms.firCoefficients[3] * texture.sample(standardSampler, vert.textureCoordinates + float2(4.0, 0.0)).rgb +
uniforms.firCoefficients[2] * texture.sample(standardSampler, vert.textureCoordinates + float2(5.0, 0.0)).rgb +
uniforms.firCoefficients[1] * texture.sample(standardSampler, vert.textureCoordinates + float2(6.0, 0.0)).rgb +
uniforms.firCoefficients[0] * texture.sample(standardSampler, vert.textureCoordinates + float2(7.0, 0.0)).rgb;
Sample(0, 0) + Sample(1, 1) + Sample(2, 2) + Sample(3, 3) +
Sample(4, 4) + Sample(5, 5) + Sample(6, 6) +
Sample(7, 7) +
Sample(6, 8) + Sample(5, 9) + Sample(4, 10) +
Sample(3, 11) + Sample(2, 12) + Sample(1, 13) + Sample(0, 14);
#undef Sample
return float4(uniforms.toRGB * ((colour - float3(0.0, 0.5, 0.5)) * float3(1.0, 2.0 / vert.colourAmplitude, 2.0 / vert.colourAmplitude)), 1.0);
}