43 lines
1.3 KiB
Metal
43 lines
1.3 KiB
Metal
// Automatically generated from files in pathfinder/shaders/. Do not edit!
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#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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struct spvDescriptorSetBuffer0
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{
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texture2d<float> uAreaLUT [[id(0)]];
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sampler uAreaLUTSmplr [[id(1)]];
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};
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struct main0_out
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{
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float4 oFragColor [[color(0)]];
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};
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struct main0_in
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{
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float2 vFrom [[user(locn0)]];
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float2 vTo [[user(locn1)]];
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};
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fragment main0_out main0(main0_in in [[stage_in]], constant spvDescriptorSetBuffer0& spvDescriptorSet0 [[buffer(0)]])
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{
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main0_out out = {};
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float2 from = in.vFrom;
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float2 to = in.vTo;
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bool2 _29 = bool2(from.x < to.x);
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float2 left = float2(_29.x ? from.x : to.x, _29.y ? from.y : to.y);
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bool2 _39 = bool2(from.x < to.x);
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float2 right = float2(_39.x ? to.x : from.x, _39.y ? to.y : from.y);
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float2 window = fast::clamp(float2(from.x, to.x), float2(-0.5), float2(0.5));
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float offset = mix(window.x, window.y, 0.5) - left.x;
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float t = offset / (right.x - left.x);
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float y = mix(left.y, right.y, t);
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float d = (right.y - left.y) / (right.x - left.x);
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float dX = window.x - window.y;
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out.oFragColor = float4(spvDescriptorSet0.uAreaLUT.sample(spvDescriptorSet0.uAreaLUTSmplr, (float2(y + 8.0, abs(d * dX)) / float2(16.0))).x * dX);
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return out;
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}
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