1a49a5334c
Early returns can cause the inliner to generate suboptimal code. We
control our built-ins, so let's avoid them where we can.
Patterns like this challenge the inliner:
if (x) return y;
return z;
But this can be replaced by equivalent code that inlines better:
return x ? y : z;
Or, if a ternary can't be used, this also does a better job:
if (x) return y;
else return z;
In several cases, this allows the inliner to avoid generating a
do-while(false) block for control flow.
Change-Id: I921c929122297c40476ff15b4da631fc1581e308
Bug: skia:10737
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/318211
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
44 lines
1.6 KiB
GLSL
44 lines
1.6 KiB
GLSL
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uniform vec4 src, dst;
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float _blend_color_luminance(vec3 color) {
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return dot(vec3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), color);
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}
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vec3 _blend_set_color_luminance(vec3 hueSatColor, float alpha, vec3 lumColor) {
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float _4_blend_color_luminance;
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{
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_4_blend_color_luminance = dot(vec3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), lumColor);
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}
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float lum = _4_blend_color_luminance;
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float _5_blend_color_luminance;
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{
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_5_blend_color_luminance = dot(vec3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), hueSatColor);
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}
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vec3 result = (lum - _5_blend_color_luminance) + hueSatColor;
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float minComp = min(min(result.x, result.y), result.z);
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float maxComp = max(max(result.x, result.y), result.z);
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if (minComp < 0.0 && lum != minComp) {
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result = lum + ((result - lum) * lum) / (lum - minComp);
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}
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return maxComp > alpha && maxComp != lum ? lum + ((result - lum) * (alpha - lum)) / (maxComp - lum) : result;
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}
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vec4 blend_luminosity(vec4 src, vec4 dst) {
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float alpha = dst.w * src.w;
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vec3 sda = src.xyz * dst.w;
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vec3 dsa = dst.xyz * src.w;
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return vec4((((_blend_set_color_luminance(dsa, alpha, sda) + dst.xyz) - dsa) + src.xyz) - sda, (src.w + dst.w) - alpha);
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}
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vec4 main() {
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vec4 _0_blend_luminosity;
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{
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float _1_alpha = dst.w * src.w;
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vec3 _2_sda = src.xyz * dst.w;
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vec3 _3_dsa = dst.xyz * src.w;
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_0_blend_luminosity = vec4((((_blend_set_color_luminance(_3_dsa, _1_alpha, _2_sda) + dst.xyz) - _3_dsa) + src.xyz) - _2_sda, (src.w + dst.w) - _1_alpha);
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}
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return _0_blend_luminosity;
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}
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