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Extract tone mapping into function

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numzero 2024-12-29 21:36:04 +03:00
parent 6f6673ea1f
commit 8c97ccad18
1 changed files with 6 additions and 2 deletions
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8
src/bin/minitracer/present.wgsl
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@ -19,9 +19,13 @@ fn on_vertex(in: Vertex) -> Varying {
@fragment
fn on_fragment(in: Varying) -> @location(0) vec4f {
let hdr = textureSample(tex, smp, in.tex).xyz;
let pixel = textureSample(tex, smp, in.tex);
return vec4(rational_tone_map(pixel.xyz), 1.0);
}
fn rational_tone_map(hdr: vec3<f32>) -> vec3<f32> {
let luminosity = dot(hdr, vec3(0.2126, 0.7152, 0.0722));
let color = hdr / luminosity;
let luma = luminosity / (luminosity + 1.0);
return vec4(luma * color, 1.0);
return luma * color;
}