skia2/tests/sksl/intrinsics/Fwidth.metal
John Stiles 25868511fd Add fwidth intrinsic to public SkSL in ES3.
Change-Id: Icd55cc62db41ba6c7008161512e5584927f21757
Bug: skia:12202
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/449190
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
2021-09-16 01:56:32 +00:00

21 lines
1.0 KiB
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);
_out.sk_FragColor = (((((((dfdx(_uniforms.testInputs.x) == expected.x && all(dfdx(_uniforms.testInputs.xy) == expected.xy)) && all(dfdx(_uniforms.testInputs.xyz) == expected.xyz)) && all(dfdx(_uniforms.testInputs) == expected)) && all(sign(fwidth(coords.xx)) == float2(1.0, 1.0))) && all(sign(fwidth(float2(coords.x, 1.0))) == float2(1.0, 0.0))) && all(sign(fwidth(coords.yy)) == float2(1.0, 1.0))) && all(sign(fwidth(float2(0.0, coords.y))) == float2(0.0, 1.0))) && all(sign(fwidth(coords)) == float2(1.0, 1.0)) ? _uniforms.colorGreen : _uniforms.colorRed;
return _out;
}