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>
42 lines
1.4 KiB
Metal
42 lines
1.4 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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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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float _5_lum;
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float3 _6_result;
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float _7_minComp;
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float _8_maxComp;
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_5_lum = dot(float3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), _2_sda);
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_6_result = (_5_lum - dot(float3(0.30000001192092896, 0.5899999737739563, 0.10999999940395355), _3_dsa)) + _3_dsa;
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_7_minComp = min(min(_6_result.x, _6_result.y), _6_result.z);
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_8_maxComp = max(max(_6_result.x, _6_result.y), _6_result.z);
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if (_7_minComp < 0.0 && _5_lum != _7_minComp) {
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_6_result = _5_lum + ((_6_result - _5_lum) * _5_lum) / (_5_lum - _7_minComp);
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}
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_out->sk_FragColor = float4(((((_8_maxComp > _1_alpha && _8_maxComp != _5_lum ? _5_lum + ((_6_result - _5_lum) * (_1_alpha - _5_lum)) / (_8_maxComp - _5_lum) : _6_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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