blob: 260c8a1be0a7b9e15ce76945214bbf3a396d238f [file] [log] [blame]
#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Uniforms {
float4 src;
float4 dst;
};
struct Inputs {
};
struct Outputs {
float4 sk_FragColor [[color(0)]];
};
float _color_burn_component_hh2h2(float2 s, float2 d) {
if (d.y == d.x) {
return (s.y * d.y + s.x * (1.0 - d.y)) + d.x * (1.0 - s.y);
} else if (s.x == 0.0) {
return d.x * (1.0 - s.y);
} else {
float delta = max(0.0, d.y - ((d.y - d.x) * s.y) / s.x);
return (delta * s.y + s.x * (1.0 - d.y)) + d.x * (1.0 - s.y);
}
}
fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
Outputs _out;
(void)_out;
_out.sk_FragColor = float4(_color_burn_component_hh2h2(_uniforms.src.xw, _uniforms.dst.xw), _color_burn_component_hh2h2(_uniforms.src.yw, _uniforms.dst.yw), _color_burn_component_hh2h2(_uniforms.src.zw, _uniforms.dst.zw), _uniforms.src.w + (1.0 - _uniforms.src.w) * _uniforms.dst.w);
return _out;
}