#include <metal_stdlib>

using namespace metal;
struct Uniforms {
  /* 0x0000 */ uint dstTextureFlipY;
  /* 0x0004 */ uint channelCount;
  /* 0x0008 */ packed_uint2 srcCopyOrigin;
  /* 0x0010 */ packed_uint2 dstCopyOrigin;
  /* 0x0018 */ packed_uint2 copySize;
};
struct OutputBuf {
  /* 0x0000 */ uint result[1];
};

bool aboutEqual(float value, float expect) {
  return (  fabs((value - expect)) < 0.001f);
}

kernel void tint_symbol(texture2d<float, access::sample> tint_symbol_2 [[texture(0)]], texture2d<float, access::sample> tint_symbol_3 [[texture(1)]], uint3 GlobalInvocationID [[thread_position_in_grid]], constant Uniforms& uniforms [[buffer(3)]], device OutputBuf& output [[buffer(2)]]) {
  int2 const srcSize = int2(tint_symbol_2.get_width(), tint_symbol_2.get_height());
  int2 const dstSize = int2(tint_symbol_3.get_width(), tint_symbol_3.get_height());
  uint2 const dstTexCoord = uint2(GlobalInvocationID.xy);
  float4 const nonCoveredColor = float4(0.0f, 1.0f, 0.0f, 1.0f);
  bool success = true;
  if (((((dstTexCoord.x < uniforms.dstCopyOrigin.x) || (dstTexCoord.y < uniforms.dstCopyOrigin.y)) || (dstTexCoord.x >= (uniforms.dstCopyOrigin.x + uniforms.copySize.x))) || (dstTexCoord.y >= (uniforms.dstCopyOrigin.y + uniforms.copySize.y)))) {
    success = (success &&     all((tint_symbol_3.read(uint2(int2(dstTexCoord)), 0) == nonCoveredColor)));
  } else {
    uint2 srcTexCoord = ((dstTexCoord - uniforms.dstCopyOrigin) + uniforms.srcCopyOrigin);
    if ((uniforms.dstTextureFlipY == 1u)) {
      srcTexCoord.y = ((uint(srcSize.y) - srcTexCoord.y) - 1u);
    }
    float4 const srcColor = tint_symbol_2.read(uint2(int2(srcTexCoord)), 0);
    float4 const dstColor = tint_symbol_3.read(uint2(int2(dstTexCoord)), 0);
    if ((uniforms.channelCount == 2u)) {
      success = ((success && aboutEqual(dstColor.r, srcColor.r)) && aboutEqual(dstColor.g, srcColor.g));
    } else {
      success = ((((success && aboutEqual(dstColor.r, srcColor.r)) && aboutEqual(dstColor.g, srcColor.g)) && aboutEqual(dstColor.b, srcColor.b)) && aboutEqual(dstColor.a, srcColor.a));
    }
  }
  uint const outputIndex = ((GlobalInvocationID.y * uint(dstSize.x)) + GlobalInvocationID.x);
  if (success) {
    output.result[outputIndex] = 1u;
  } else {
    output.result[outputIndex] = 0u;
  }
  return;
}