e1068349fc
Change-Id: Ib9a1a51f8a29b2d03792a3abd93b3a9a321b5464 Bug: skia:10851 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/387756 Commit-Queue: John Stiles <johnstiles@google.com> Auto-Submit: John Stiles <johnstiles@google.com> Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
37 lines
1.5 KiB
Metal
37 lines
1.5 KiB
Metal
#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)]];
|
|
};
|
|
float3 _blend_set_color_luminance_h3h3hh3(float3 hueSatColor, float alpha, float3 lumColor) {
|
|
float lum = dot(float3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), lumColor);
|
|
float3 result = (lum - dot(float3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), hueSatColor)) + hueSatColor;
|
|
float minComp = min(min(result.x, result.y), result.z);
|
|
float maxComp = max(max(result.x, result.y), result.z);
|
|
if (minComp < 0.0 && lum != minComp) {
|
|
result = lum + (result - lum) * (lum / (lum - minComp));
|
|
}
|
|
if (maxComp > alpha && maxComp != lum) {
|
|
return lum + ((result - lum) * (alpha - lum)) / (maxComp - lum);
|
|
} else {
|
|
return result;
|
|
}
|
|
}
|
|
|
|
fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
|
|
Outputs _out;
|
|
(void)_out;
|
|
float _0_alpha = _uniforms.dst.w * _uniforms.src.w;
|
|
float3 _1_sda = _uniforms.src.xyz * _uniforms.dst.w;
|
|
float3 _2_dsa = _uniforms.dst.xyz * _uniforms.src.w;
|
|
_out.sk_FragColor = float4((((_blend_set_color_luminance_h3h3hh3(_2_dsa, _0_alpha, _1_sda) + _uniforms.dst.xyz) - _2_dsa) + _uniforms.src.xyz) - _1_sda, (_uniforms.src.w + _uniforms.dst.w) - _0_alpha);
|
|
return _out;
|
|
}
|