skia2/tests/sksl/intrinsics/SignFloat.metal
John Stiles edac7716aa Evaluate single-argument generic intrinsics at compile time.
In particular, this optimizes abs() and sign() when all inputs are known
at compile time. This resolves a TODO on a test case in
`IllegalIndexing.rts`.

Change-Id: Ica310522a85b42dc7ae255bd25004a6629d04176
Bug: skia:10835
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/405676
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
2021-05-10 14:50:50 +00:00

22 lines
946 B
Metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Uniforms {
float4 testInputs;
float4 colorGreen;
float4 colorRed;
};
struct Inputs {
};
struct Outputs {
float4 sk_FragColor [[color(0)]];
};
fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
Outputs _out;
(void)_out;
float4 expected = float4(-1.0, 0.0, 1.0, 1.0);
_out.sk_FragColor = ((((((sign(_uniforms.testInputs.x) == expected.x && all(sign(_uniforms.testInputs.xy) == expected.xy)) && all(sign(_uniforms.testInputs.xyz) == expected.xyz)) && all(sign(_uniforms.testInputs) == expected)) && -1.0 == expected.x) && all(float2(-1.0, 0.0) == expected.xy)) && all(float3(-1.0, 0.0, 1.0) == expected.xyz)) && all(float4(-1.0, 0.0, 1.0, 1.0) == expected) ? _uniforms.colorGreen : _uniforms.colorRed;
return _out;
}