skia2/tests/sksl/blend/BlendHueStandaloneSettings.glsl
John Stiles c5b381c479 Use $ prefix on built-in private functions.
This guards against any potential for conflict with user code.

Change-Id: Iecaf3ead5f8ada50b6dc159a4ad9e7f3e371edc7
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/499296
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2022-01-25 15:21:42 +00:00

50 lines
2.3 KiB
GLSL

out vec4 sk_FragColor;
uniform vec4 src;
uniform vec4 dst;
vec3 blend_set_color_luminance_Qh3h3hh3(vec3 hueSatColor, float alpha, vec3 lumColor) {
float lum = dot(vec3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), lumColor);
vec3 result = (lum - dot(vec3(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;
}
}
vec3 blend_set_color_saturation_helper_Qh3h3h(vec3 minMidMax, float sat) {
if (minMidMax.x < minMidMax.z) {
return vec3(0.0, (sat * (minMidMax.y - minMidMax.x)) / (minMidMax.z - minMidMax.x), sat);
} else {
return vec3(0.0);
}
}
vec3 blend_set_color_saturation_Qh3h3h3(vec3 hueLumColor, vec3 satColor) {
float sat = max(max(satColor.x, satColor.y), satColor.z) - min(min(satColor.x, satColor.y), satColor.z);
if (hueLumColor.x <= hueLumColor.y) {
if (hueLumColor.y <= hueLumColor.z) {
return blend_set_color_saturation_helper_Qh3h3h(hueLumColor, sat);
} else if (hueLumColor.x <= hueLumColor.z) {
return blend_set_color_saturation_helper_Qh3h3h(hueLumColor.xzy, sat).xzy;
} else {
return blend_set_color_saturation_helper_Qh3h3h(hueLumColor.zxy, sat).yzx;
}
} else if (hueLumColor.x <= hueLumColor.z) {
return blend_set_color_saturation_helper_Qh3h3h(hueLumColor.yxz, sat).yxz;
} else if (hueLumColor.y <= hueLumColor.z) {
return blend_set_color_saturation_helper_Qh3h3h(hueLumColor.yzx, sat).zxy;
} else {
return blend_set_color_saturation_helper_Qh3h3h(hueLumColor.zyx, sat).zyx;
}
}
void main() {
float _0_alpha = dst.w * src.w;
vec3 _1_sda = src.xyz * dst.w;
vec3 _2_dsa = dst.xyz * src.w;
sk_FragColor = vec4((((blend_set_color_luminance_Qh3h3hh3(blend_set_color_saturation_Qh3h3h3(_1_sda, _2_dsa), _0_alpha, _2_dsa) + dst.xyz) - _2_dsa) + src.xyz) - _1_sda, (src.w + dst.w) - _0_alpha);
}