30 lines
621 B
GLSL
30 lines
621 B
GLSL
#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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struct buf
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{
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float t;
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};
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struct main0_out
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{
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float4 fragColor [[color(0)]];
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};
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struct main0_in
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{
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float2 coords [[user(locn0)]];
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};
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fragment main0_out main0(main0_in in [[stage_in]], constant buf& ubuf [[buffer(0)]])
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{
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main0_out out = {};
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float i = 1.0 - (pow(abs(in.coords.x), 4.0) + pow(abs(in.coords.y), 4.0));
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i = smoothstep(ubuf.t - 0.800000011920928955078125, ubuf.t + 0.800000011920928955078125, i);
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i = floor(i * 20.0) / 20.0;
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out.fragColor = float4((in.coords * 0.5) + float2(0.5), i, i);
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return out;
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}
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