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>
66 lines
2.6 KiB
Metal
66 lines
2.6 KiB
Metal
#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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struct Inputs {
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float4 src;
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float4 dst;
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};
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struct Outputs {
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float4 sk_FragColor [[color(0)]];
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};
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float3 _blend_set_color_saturation_helper(float3 minMidMax, float sat) {
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return minMidMax.x < minMidMax.z ? float3(0.0, (sat * (minMidMax.y - minMidMax.x)) / (minMidMax.z - minMidMax.x), sat) : float3(0.0);
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}
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fragment Outputs fragmentMain(Inputs _in [[stage_in]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
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Outputs _outputStruct;
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thread Outputs* _out = &_outputStruct;
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float _1_alpha;
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float3 _2_sda;
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float3 _3_dsa;
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_1_alpha = _in.dst.w * _in.src.w;
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_2_sda = _in.src.xyz * _in.dst.w;
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_3_dsa = _in.dst.xyz * _in.src.w;
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float3 _4_blend_set_color_saturation;
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float _5_sat;
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_5_sat = max(max(_2_sda.x, _2_sda.y), _2_sda.z) - min(min(_2_sda.x, _2_sda.y), _2_sda.z);
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if (_3_dsa.x <= _3_dsa.y) {
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if (_3_dsa.y <= _3_dsa.z) {
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_4_blend_set_color_saturation = _blend_set_color_saturation_helper(_3_dsa, _5_sat);
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} else if (_3_dsa.x <= _3_dsa.z) {
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_4_blend_set_color_saturation = _blend_set_color_saturation_helper(_3_dsa.xzy, _5_sat).xzy;
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} else {
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_4_blend_set_color_saturation = _blend_set_color_saturation_helper(_3_dsa.zxy, _5_sat).yzx;
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}
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} else if (_3_dsa.x <= _3_dsa.z) {
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_4_blend_set_color_saturation = _blend_set_color_saturation_helper(_3_dsa.yxz, _5_sat).yxz;
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} else if (_3_dsa.y <= _3_dsa.z) {
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_4_blend_set_color_saturation = _blend_set_color_saturation_helper(_3_dsa.yzx, _5_sat).zxy;
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} else {
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_4_blend_set_color_saturation = _blend_set_color_saturation_helper(_3_dsa.zyx, _5_sat).zyx;
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}
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float _7_lum;
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float3 _8_result;
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float _9_minComp;
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float _10_maxComp;
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_7_lum = dot(float3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), _3_dsa);
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_8_result = (_7_lum - dot(float3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), _4_blend_set_color_saturation)) + _4_blend_set_color_saturation;
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_9_minComp = min(min(_8_result.x, _8_result.y), _8_result.z);
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_10_maxComp = max(max(_8_result.x, _8_result.y), _8_result.z);
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if (_9_minComp < 0.0 && _7_lum != _9_minComp) {
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_8_result = _7_lum + ((_8_result - _7_lum) * _7_lum) / (_7_lum - _9_minComp);
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}
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_out->sk_FragColor = float4(((((_10_maxComp > _1_alpha && _10_maxComp != _7_lum ? _7_lum + ((_8_result - _7_lum) * (_1_alpha - _7_lum)) / (_10_maxComp - _7_lum) : _8_result) + _in.dst.xyz) - _3_dsa) + _in.src.xyz) - _2_sda, (_in.src.w + _in.dst.w) - _1_alpha);
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return *_out;
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}
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