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The WebGPU rainPass now performs a high pass filter on its own fragments. I think I prefer this to a separate high pass filter, because this one is pre-blendfunc, ie. fragments will only be added to the texture if they are individually bright enough to contribute.

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Rezmason
2021-11-09 07:08:07 -08:00
parent 786c83cca0
commit 6586badf42
2 changed files with 32 additions and 0 deletions
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14
shaders/wgsl/rainPass.wgsl
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@@ -37,6 +37,7 @@
slantScale : f32;
slantVec : vec2<f32>;
volumetric : i32;
highPassThreshold : f32;
};
// The properties that change over time get their own buffer.
@@ -89,6 +90,7 @@ struct VertOutput {
struct FragOutput {
[[location(0)]] color : vec4<f32>;
[[location(1)]] highPassColor : vec4<f32>;
};
// Constants
@@ -432,5 +434,17 @@ fn getSymbolUV(glyphCycle : f32) -> vec2<f32> {
output.color = vec4<f32>(input.channel * brightness * alpha, 1.0);
}
var highPassColor = output.color;
if (highPassColor.r < config.highPassThreshold) {
highPassColor.r = 0.0;
}
if (highPassColor.g < config.highPassThreshold) {
highPassColor.g = 0.0;
}
if (highPassColor.b < config.highPassThreshold) {
highPassColor.b = 0.0;
}
output.highPassColor = highPassColor;
return output;
}