skia2/tests/sksl/shared/CommaSideEffects.metal
John Stiles 94e72b90b8 Add test to verify side effects from the comma operator.
SkVMCodeGenerator was lacking support for the comma operator entirely;
this has now been implemented.

Change-Id: I9350f54e6ee52764c620116e6dbfe4ca3e9cd47e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/363096
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
2021-02-01 16:16:58 +00:00

45 lines
1.2 KiB
Metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Uniforms {
float4 colorRed;
float4 colorGreen;
float4 colorWhite;
float4 colorBlack;
};
struct Inputs {
};
struct Outputs {
float4 sk_FragColor [[color(0)]];
};
void setToColorBlack(Uniforms _uniforms, thread float4& x);
void _skOutParamHelper0_setToColorBlack(Uniforms _uniforms, thread float4& d) {
float4 _var0;
setToColorBlack(_uniforms, _var0);
d = _var0;
}
void setToColorBlack(Uniforms _uniforms, thread float4& x) {
x = _uniforms.colorBlack;
}
fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
Outputs _out;
(void)_out;
float4 a;
float4 b;
float4 c;
float4 d;
(b = _uniforms.colorRed , c = _uniforms.colorGreen);
a = ( _skOutParamHelper0_setToColorBlack(_uniforms, d) , _uniforms.colorWhite);
a *= a;
b *= b;
c *= c;
d *= d;
_out.sk_FragColor = ((all(a == _uniforms.colorWhite) && all(b == _uniforms.colorRed)) && all(c == _uniforms.colorGreen)) && all(d == _uniforms.colorBlack) ? _uniforms.colorGreen : _uniforms.colorRed;
return _out;
}