skia2/tests/sksl/shared/ComplexDelete.metal
John Stiles c501857188 Add support for matrix == and != in Metal shaders.
We need to polyfill an operator== and != when these are first
encountered in the code.

Change-Id: I539c838ee1871bcb0c4b66abb8a4a0f91146cd4f
Bug: skia:11306
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/368496
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2021-02-09 22:53:18 +00:00

30 lines
1.0 KiB
Metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Uniforms {
float4x4 colorXform;
};
struct Inputs {
};
struct Outputs {
float4 sk_FragColor [[color(0)]];
};
struct Globals {
texture2d<float> s;
sampler sSmplr;
};
thread bool operator!=(const float4x4 left, const float4x4 right) {
return any(left[0] != right[0]) || any(left[1] != right[1]) || any(left[2] != right[2]) || any(left[3] != right[3]);
}
fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], texture2d<float> s[[texture(0)]], sampler sSmplr[[sampler(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
Globals _globals{s, sSmplr};
(void)_globals;
Outputs _out;
(void)_out;
float4 tmpColor;
_out.sk_FragColor = (tmpColor = _globals.s.sample(_globals.sSmplr, float2(1.0)) , _uniforms.colorXform != float4x4(1.0) ? float4(clamp((_uniforms.colorXform * float4(tmpColor.xyz, 1.0)).xyz, 0.0, tmpColor.w), tmpColor.w) : tmpColor);
return _out;
}