0xrsydn
a20d3310db
Adds --check (compile every effect without camera or window), EFFECTS.md (the contract for writing effects) and AGENTS.md. The POC stays available at the 'poc' tag. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
12 lines
530 B
Metal
12 lines
530 B
Metal
// Recolours the picture by brightness with a smooth colour ramp.
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// order 10
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// slider amount 0.0 1.0 0.8
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// slider palette 0.0 1.0 0.0
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// slider contrast 0.5 3.0 1.2
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float4 effect(float2 uv, Inputs in) {
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float3 c = in.image.sample(in.smp, uv).rgb;
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float luma = pow(dot(c, float3(0.299, 0.587, 0.114)), in.p.contrast);
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float3 ramp = 0.5 + 0.5 * cos(6.2832 * (luma * 0.8 + in.p.palette + float3(0.55, 0.4, 0.2)));
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float3 mapped = ramp * (0.15 + 0.85 * luma);
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return float4(mix(c, mapped, in.p.amount), 1.0);
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}
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