345d72124d
When we determine that a function only contains a single return statement, there is no need to create a temporary variable and store the result expression into a variable. Instead, we can directly replace the function-call expression with the return-statement's expression. This dramatically simplifies the final optimized output from chains of very simple inlined functions, which is a very common pattern for trees of Skia fragment processors. Change-Id: I6789064a321daf43db2e1cef4915f25ed74d6131 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/344665 Commit-Queue: John Stiles <johnstiles@google.com> Reviewed-by: Brian Osman <brianosman@google.com> Auto-Submit: John Stiles <johnstiles@google.com>
223 lines
7.8 KiB
GLSL
223 lines
7.8 KiB
GLSL
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out vec4 sk_FragColor;
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float _blend_overlay_component(vec2 s, vec2 d) {
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return 2.0 * d.x <= d.y ? (2.0 * s.x) * d.x : s.y * d.y - (2.0 * (d.y - d.x)) * (s.y - s.x);
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}
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vec4 blend_overlay(vec4 src, vec4 dst) {
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vec4 result = vec4(_blend_overlay_component(src.xw, dst.xw), _blend_overlay_component(src.yw, dst.yw), _blend_overlay_component(src.zw, dst.zw), src.w + (1.0 - src.w) * dst.w);
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result.xyz += dst.xyz * (1.0 - src.w) + src.xyz * (1.0 - dst.w);
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return result;
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}
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float _color_dodge_component(vec2 s, vec2 d) {
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if (d.x == 0.0) {
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return s.x * (1.0 - d.y);
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} else {
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float delta = s.y - s.x;
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if (delta == 0.0) {
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return (s.y * d.y + s.x * (1.0 - d.y)) + d.x * (1.0 - s.y);
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} else {
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float _4_n = d.x * s.y;
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delta = min(d.y, _4_n / delta);
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return (delta * s.y + s.x * (1.0 - d.y)) + d.x * (1.0 - s.y);
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}
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}
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}
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float _color_burn_component(vec2 s, vec2 d) {
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if (d.y == d.x) {
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return (s.y * d.y + s.x * (1.0 - d.y)) + d.x * (1.0 - s.y);
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} else if (s.x == 0.0) {
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return d.x * (1.0 - s.y);
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} else {
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float _6_n = (d.y - d.x) * s.y;
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float delta = max(0.0, d.y - _6_n / s.x);
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return (delta * s.y + s.x * (1.0 - d.y)) + d.x * (1.0 - s.y);
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}
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}
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float _soft_light_component(vec2 s, vec2 d) {
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if (2.0 * s.x <= s.y) {
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float _8_n = (d.x * d.x) * (s.y - 2.0 * s.x);
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return (_8_n / d.y + (1.0 - d.y) * s.x) + d.x * ((-s.y + 2.0 * s.x) + 1.0);
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} else if (4.0 * d.x <= d.y) {
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float DSqd = d.x * d.x;
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float DCub = DSqd * d.x;
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float DaSqd = d.y * d.y;
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float DaCub = DaSqd * d.y;
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float _10_n = ((DaSqd * (s.x - d.x * ((3.0 * s.y - 6.0 * s.x) - 1.0)) + ((12.0 * d.y) * DSqd) * (s.y - 2.0 * s.x)) - (16.0 * DCub) * (s.y - 2.0 * s.x)) - DaCub * s.x;
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return _10_n / DaSqd;
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} else {
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return ((d.x * ((s.y - 2.0 * s.x) + 1.0) + s.x) - sqrt(d.y * d.x) * (s.y - 2.0 * s.x)) - d.y * s.x;
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}
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}
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vec3 _blend_set_color_luminance(vec3 hueSatColor, float alpha, vec3 lumColor) {
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float lum = dot(vec3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), lumColor);
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vec3 result = (lum - dot(vec3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), hueSatColor)) + 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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vec3 _blend_set_color_saturation_helper(vec3 minMidMax, float sat) {
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return minMidMax.x < minMidMax.z ? vec3(0.0, (sat * (minMidMax.y - minMidMax.x)) / (minMidMax.z - minMidMax.x), sat) : vec3(0.0);
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}
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vec3 _blend_set_color_saturation(vec3 hueLumColor, vec3 satColor) {
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float sat = max(max(satColor.x, satColor.y), satColor.z) - min(min(satColor.x, satColor.y), satColor.z);
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if (hueLumColor.x <= hueLumColor.y) {
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if (hueLumColor.y <= hueLumColor.z) {
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return _blend_set_color_saturation_helper(hueLumColor, sat);
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} else if (hueLumColor.x <= hueLumColor.z) {
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return _blend_set_color_saturation_helper(hueLumColor.xzy, sat).xzy;
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} else {
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return _blend_set_color_saturation_helper(hueLumColor.zxy, sat).yzx;
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}
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} else if (hueLumColor.x <= hueLumColor.z) {
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return _blend_set_color_saturation_helper(hueLumColor.yxz, sat).yxz;
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} else if (hueLumColor.y <= hueLumColor.z) {
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return _blend_set_color_saturation_helper(hueLumColor.yzx, sat).zxy;
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} else {
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return _blend_set_color_saturation_helper(hueLumColor.zyx, sat).zyx;
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}
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}
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vec4 blend(int mode, vec4 src, vec4 dst) {
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switch (mode) {
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case 0:
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return vec4(0.0);
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case 1:
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return src;
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case 2:
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return dst;
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case 3:
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return src + (1.0 - src.w) * dst;
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case 4:
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return (1.0 - dst.w) * src + dst;
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case 5:
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return src * dst.w;
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case 6:
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return dst * src.w;
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case 7:
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return (1.0 - dst.w) * src;
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case 8:
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return (1.0 - src.w) * dst;
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case 9:
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return dst.w * src + (1.0 - src.w) * dst;
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case 10:
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return (1.0 - dst.w) * src + src.w * dst;
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case 11:
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return (1.0 - dst.w) * src + (1.0 - src.w) * dst;
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case 12:
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return min(src + dst, 1.0);
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case 13:
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return src * dst;
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case 14:
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return src + (1.0 - src) * dst;
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case 15:
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return blend_overlay(src, dst);
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case 16:
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vec4 _32_result;
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_32_result = src + (1.0 - src.w) * dst;
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_32_result.xyz = min(_32_result.xyz, (1.0 - dst.w) * src.xyz + dst.xyz);
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return _32_result;
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case 17:
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vec4 _35_result;
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_35_result = src + (1.0 - src.w) * dst;
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_35_result.xyz = max(_35_result.xyz, (1.0 - dst.w) * src.xyz + dst.xyz);
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return _35_result;
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case 18:
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return vec4(_color_dodge_component(src.xw, dst.xw), _color_dodge_component(src.yw, dst.yw), _color_dodge_component(src.zw, dst.zw), src.w + (1.0 - src.w) * dst.w);
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case 19:
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return vec4(_color_burn_component(src.xw, dst.xw), _color_burn_component(src.yw, dst.yw), _color_burn_component(src.zw, dst.zw), src.w + (1.0 - src.w) * dst.w);
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case 20:
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return blend_overlay(dst, src);
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case 21:
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return dst.w == 0.0 ? src : vec4(_soft_light_component(src.xw, dst.xw), _soft_light_component(src.yw, dst.yw), _soft_light_component(src.zw, dst.zw), src.w + (1.0 - src.w) * dst.w);
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case 22:
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return vec4((src.xyz + dst.xyz) - 2.0 * min(src.xyz * dst.w, dst.xyz * src.w), src.w + (1.0 - src.w) * dst.w);
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case 23:
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return vec4((dst.xyz + src.xyz) - (2.0 * dst.xyz) * src.xyz, src.w + (1.0 - src.w) * dst.w);
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case 24:
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return vec4(((1.0 - src.w) * dst.xyz + (1.0 - dst.w) * src.xyz) + src.xyz * dst.xyz, src.w + (1.0 - src.w) * dst.w);
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case 25:
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float _44_alpha;
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vec3 _45_sda;
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vec3 _46_dsa;
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_44_alpha = dst.w * src.w;
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_45_sda = src.xyz * dst.w;
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_46_dsa = dst.xyz * src.w;
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return vec4((((_blend_set_color_luminance(_blend_set_color_saturation(_45_sda, _46_dsa), _44_alpha, _46_dsa) + dst.xyz) - _46_dsa) + src.xyz) - _45_sda, (src.w + dst.w) - _44_alpha);
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case 26:
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float _48_alpha;
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vec3 _49_sda;
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vec3 _50_dsa;
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_48_alpha = dst.w * src.w;
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_49_sda = src.xyz * dst.w;
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_50_dsa = dst.xyz * src.w;
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return vec4((((_blend_set_color_luminance(_blend_set_color_saturation(_50_dsa, _49_sda), _48_alpha, _50_dsa) + dst.xyz) - _50_dsa) + src.xyz) - _49_sda, (src.w + dst.w) - _48_alpha);
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case 27:
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float _52_alpha;
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vec3 _53_sda;
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vec3 _54_dsa;
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_52_alpha = dst.w * src.w;
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_53_sda = src.xyz * dst.w;
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_54_dsa = dst.xyz * src.w;
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return vec4((((_blend_set_color_luminance(_53_sda, _52_alpha, _54_dsa) + dst.xyz) - _54_dsa) + src.xyz) - _53_sda, (src.w + dst.w) - _52_alpha);
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case 28:
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float _56_alpha;
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vec3 _57_sda;
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vec3 _58_dsa;
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_56_alpha = dst.w * src.w;
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_57_sda = src.xyz * dst.w;
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_58_dsa = dst.xyz * src.w;
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return vec4((((_blend_set_color_luminance(_58_dsa, _56_alpha, _57_sda) + dst.xyz) - _58_dsa) + src.xyz) - _57_sda, (src.w + dst.w) - _56_alpha);
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}
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return vec4(0.0);
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}
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in vec4 src;
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in vec4 dst;
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void main() {
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sk_FragColor = blend(13, src, dst);
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}
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