skia2/tests/sksl/intrinsics/Saturate.metal
John Stiles 33ef30ec68 Optimize remaining simple 1-argument intrinsics.
Aside from sqrt() and normalize(), we now optimize all the intrinsics
which take a single argument as input, and return that argument with
each of its components permuted as output.

This CL also introduces a minor restriction--we no longer optimize
intrinsics which evaluate to inf or nan, such as `inversesqrt(-1)`.
These will be left in the source as-is.

Change-Id: I4919b3c18a2df81accd6daf2f650b9f587ff43fc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/406577
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
2021-05-11 16:44:09 +00:00

22 lines
960 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(0.0, 0.0, 0.75, 1.0);
_out.sk_FragColor = ((((((saturate(_uniforms.testInputs.x) == expected.x && all(saturate(_uniforms.testInputs.xy) == expected.xy)) && all(saturate(_uniforms.testInputs.xyz) == expected.xyz)) && all(saturate(_uniforms.testInputs) == expected)) && 0.0 == expected.x) && all(float2(0.0, 0.0) == expected.xy)) && all(float3(0.0, 0.0, 0.75) == expected.xyz)) && all(float4(0.0, 0.0, 0.75, 1.0) == expected) ? _uniforms.colorGreen : _uniforms.colorRed;
return _out;
}