skia2/tests/sksl/metal/SwizzleHelper.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

41 lines
1.4 KiB
Metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Inputs {
};
struct Outputs {
half4 sk_FragColor [[color(0)]];
};
struct Globals {
half2 glob;
};
half4 fn_h4hh2h2h3(thread Outputs& _out, thread Globals& _globals, half a, thread half2& b, thread half2& c, thread half3& d);
half4 _skOutParamHelper0_fn_h4hh2h2h3(thread Outputs& _out, thread Globals& _globals, half _var0, thread half3& b, thread half2& glob, thread half3x3& d) {
half2 _var1;
half2 _var2 = glob.yx;
half3 _var3 = d[1].zyx;
half4 _skResult = fn_h4hh2h2h3(_out, _globals, _var0, _var1, _var2, _var3);
b.yz = _var1;
glob.yx = _var2;
d[1].zyx = _var3;
return _skResult;
}
half4 fn_h4hh2h2h3(thread Outputs& _out, thread Globals& _globals, half a, thread half2& b, thread half2& c, thread half3& d) {
a = _out.sk_FragColor.x + a;
b = _out.sk_FragColor.yz - _globals.glob.y;
c *= a;
d = _out.sk_FragColor.www / d;
return half4(a, b.x, c.y, d.x);
}
fragment Outputs fragmentMain(Inputs _in [[stage_in]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
Globals _globals{half2(1.0h)};
(void)_globals;
Outputs _out;
(void)_out;
half2 a = half2(1.0h);
half3 b = half3(2.0h);
half3x3 d = half3x3(4.0h);
_out.sk_FragColor = _skOutParamHelper0_fn_h4hh2h2h3(_out, _globals, a.x, b, _globals.glob, d);
return _out;
}