skia2/tests/sksl/intrinsics/GreaterThanEqual.metal
John Stiles a5f1697d05 Optimize intrinsic vector comparisons of constants.
If every argument passed to lessThan/greaterThan/lessThanEqual/
greaterThanEqual/equal/notEqual() is a compile-time constant, we now
detect this and optimize away the function call entirely.

Change-Id: I3415d21be6ef51b38b682a792bd118fad51957f5
Bug: skia:10835
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/404776
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
2021-05-06 14:00:27 +00:00

29 lines
877 B
Metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Uniforms {
float4 a;
float4 b;
uint2 c;
uint2 d;
int3 e;
int3 f;
};
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;
bool4 expectFFTT = bool4(false, false, true, true);
bool4 expectTTFF = bool4(true, true, false, false);
_out.sk_FragColor.x = float((_uniforms.a >= _uniforms.b).x ? 1 : 0);
_out.sk_FragColor.y = float((_uniforms.c >= _uniforms.d).y ? 1 : 0);
_out.sk_FragColor.z = float((_uniforms.e >= _uniforms.f).z ? 1 : 0);
_out.sk_FragColor.w = float(any(expectTTFF) || any(expectFFTT) ? 1 : 0);
return _out;
}