// Automatically generated from files in pathfinder/shaders/. Do not edit!
#pragma clang diagnostic ignored "-Wmissing-prototypes"

#include <metal_stdlib>
#include <simd/simd.h>

using namespace metal;

struct spvDescriptorSetBuffer0
{
    texture2d<float> uFillTexture [[id(0)]];
    sampler uFillTextureSmplr [[id(1)]];
};

struct main0_out
{
    float4 oFragColor [[color(0)]];
};

struct main0_in
{
    float2 vFillTexCoord [[user(locn0)]];
    float vBackdrop [[user(locn1)]];
};

// Implementation of the GLSL mod() function, which is slightly different than Metal fmod()
template<typename Tx, typename Ty>
Tx mod(Tx x, Ty y)
{
    return x - y * floor(x / y);
}

fragment main0_out main0(main0_in in [[stage_in]], constant spvDescriptorSetBuffer0& spvDescriptorSet0 [[buffer(0)]])
{
    main0_out out = {};
    float alpha = spvDescriptorSet0.uFillTexture.sample(spvDescriptorSet0.uFillTextureSmplr, in.vFillTexCoord).x + in.vBackdrop;
    out.oFragColor = float4(1.0 - abs(1.0 - mod(alpha, 2.0)));
    return out;
}