skia2/tests/sksl/shared/SwizzleOpt.metal
John Stiles 9b9805959d Reland "Add support for half-precision types in Metal."
This reverts commit 9d24b02c2f.

Reason for revert: needs premul/unpremul conversion fix (http://review.skia.org/465798)

Original change's description:
> Revert "Add support for half-precision types in Metal."
>
> This reverts commit d90e09b1ae.
>
> Reason for revert: MacMini failing CompressedBackendAllocationTest
>
> Original change's description:
> > Add support for half-precision types in Metal.
> >
> > This will hopefully improve performance on lower-end GPUs.
> >
> > Change-Id: I9c2ee6dc31acd08bec0bfb5f59edc3cf90163f9e
> > Bug: skia:12339
> > Reviewed-on: https://skia-review.googlesource.com/c/skia/+/465078
> > Auto-Submit: John Stiles <johnstiles@google.com>
> > Reviewed-by: Brian Osman <brianosman@google.com>
> > Commit-Queue: John Stiles <johnstiles@google.com>
>
> Bug: skia:12339
> Change-Id: Ic5aa4bef454ca67f5ce26c600444d9565e0158cb
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/465796
> Auto-Submit: Brian Osman <brianosman@google.com>
> Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>

Bug: skia:12339
Change-Id: I53a8a6fef299da15d206d884ba7029820ffcff43
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/465799
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: John Stiles <johnstiles@google.com>
2021-10-30 14:33:52 +00:00

44 lines
1.3 KiB
Metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Uniforms {
half4 colorRed;
half4 colorGreen;
half4 testInputs;
};
struct Inputs {
};
struct Outputs {
half4 sk_FragColor [[color(0)]];
};
half fn_hh4(half4 v) {
for (int x = 1;x <= 2; ++x) {
return v.x;
}
}
fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
Outputs _out;
(void)_out;
half4 v = _uniforms.testInputs;
v = half4(0.0h, v.zyx);
v = half4(0.0h, 0.0h, v.xw);
v = half4(1.0h, 1.0h, v.wx);
v = half4(v.zy, 1.0h, 1.0h);
v = half4(v.xx, 1.0h, 1.0h);
v = v.wzwz;
v = half3(fn_hh4(v), 123.0h, 456.0h).yyzz;
v = half3(fn_hh4(v), 123.0h, 456.0h).yyzz;
v = half4(123.0h, 456.0h, 456.0h, fn_hh4(v));
v = half4(123.0h, 456.0h, 456.0h, fn_hh4(v));
v = half3(fn_hh4(v), 123.0h, 456.0h).yxxz;
v = half3(fn_hh4(v), 123.0h, 456.0h).yxxz;
v = half4(1.0h, 1.0h, 2.0h, 3.0h);
v = half4(_uniforms.colorRed.xyz, 1.0h);
v = half4(_uniforms.colorRed.x, 1.0h, _uniforms.colorRed.yz);
v.wzyx = v;
v.xw = v.yz;
v.zyx = half3(v.ww, 1.0h);
_out.sk_FragColor = all(v == half4(1.0h)) ? _uniforms.colorGreen : _uniforms.colorRed;
return _out;
}