3934647d22
This is a reland of 830c69ca66
Original change's description:
> Implement operator== and != for Metal structs and arrays.
>
> GLSL/SkSL assumes that == and != on struct/array types should work.
> We need to emit equality and inequality operators whenever we find code
> that compares a struct or array.
>
> Structs and arrays can be arbitrarily nested, and either type can
> contain a matrix. All of these things need custom equality operators in
> Metal. Therefore, we need to recursively generate comparison operators
> when any of these types are encountered.
>
> For arrays we get lucky, and we can cover all possible array types and
> sizes with a single templated operator== method. Structs and matrices
> have no such luck, and are generated separately on a per-type basis.
>
> For each of these types, operator== is implemented as an equality check
> on each field, and operator!= is implemented in terms of operator==.
> Equality and inequality are always emitted together. (Previously, matrix
> equality and inequality were emitted and implemented independently, but
> this is no longer the case.)
>
> Change-Id: I69ee01c0a390d7db6bcb2253ed6336ab20cc4d1d
> Bug: skia:11908, skia:11924
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/402016
> Auto-Submit: John Stiles <johnstiles@google.com>
> Commit-Queue: Brian Osman <brianosman@google.com>
> Reviewed-by: Brian Osman <brianosman@google.com>
Bug: skia:11908, skia:11924, skia:11929
Change-Id: I6336b6125e9774c1ca73e3d497e3466f11f6f25f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/402559
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
42 lines
1.5 KiB
Metal
42 lines
1.5 KiB
Metal
#include <metal_stdlib>
|
|
#include <simd/simd.h>
|
|
using namespace metal;
|
|
struct Uniforms {
|
|
float4 colorGreen;
|
|
float4 colorRed;
|
|
float2x2 testMatrix2x2;
|
|
float3x3 testMatrix3x3;
|
|
};
|
|
struct Inputs {
|
|
};
|
|
struct Outputs {
|
|
float4 sk_FragColor [[color(0)]];
|
|
};
|
|
thread bool operator==(const float2x2 left, const float2x2 right) {
|
|
return all(left[0] == right[0]) &&
|
|
all(left[1] == right[1]);
|
|
}
|
|
thread bool operator!=(const float2x2 left, const float2x2 right) {
|
|
return !(left == right);
|
|
}
|
|
thread bool operator==(const float3x3 left, const float3x3 right) {
|
|
return all(left[0] == right[0]) &&
|
|
all(left[1] == right[1]) &&
|
|
all(left[2] == right[2]);
|
|
}
|
|
thread bool operator!=(const float3x3 left, const float3x3 right) {
|
|
return !(left == right);
|
|
}
|
|
|
|
fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
|
|
Outputs _out;
|
|
(void)_out;
|
|
bool _0_ok = true;
|
|
_0_ok = _0_ok && _uniforms.testMatrix2x2 == float2x2(float2(1.0, 2.0), float2(3.0, 4.0));
|
|
_0_ok = _0_ok && _uniforms.testMatrix3x3 == float3x3(float3(1.0, 2.0, 3.0), float3(4.0, 5.0, 6.0), float3(7.0, 8.0, 9.0));
|
|
_0_ok = _0_ok && _uniforms.testMatrix2x2 != float2x2(100.0);
|
|
_0_ok = _0_ok && _uniforms.testMatrix3x3 != float3x3(float3(9.0, 8.0, 7.0), float3(6.0, 5.0, 4.0), float3(3.0, 2.0, 1.0));
|
|
_out.sk_FragColor = _0_ok ? _uniforms.colorGreen : _uniforms.colorRed;
|
|
return _out;
|
|
}
|