skia2/tests/sksl/intrinsics/Frexp.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

55 lines
1.7 KiB
Metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Uniforms {
half4 colorGreen;
half4 colorRed;
};
struct Inputs {
};
struct Outputs {
half4 sk_FragColor [[color(0)]];
};
float _skOutParamHelper0_frexp(float _var0, thread int4& exp) {
int _var1;
float _skResult = frexp(_var0, _var1);
exp.x = _var1;
return _skResult;
}
float2 _skOutParamHelper1_frexp(float2 _var0, thread int4& exp) {
int2 _var1;
float2 _skResult = frexp(_var0, _var1);
exp.xy = _var1;
return _skResult;
}
float3 _skOutParamHelper2_frexp(float3 _var0, thread int4& exp) {
int3 _var1;
float3 _skResult = frexp(_var0, _var1);
exp.xyz = _var1;
return _skResult;
}
float4 _skOutParamHelper3_frexp(float4 _var0, thread int4& exp) {
int4 _var1;
float4 _skResult = frexp(_var0, _var1);
exp = _var1;
return _skResult;
}
fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
Outputs _out;
(void)_out;
float4 value = float4(_uniforms.colorGreen.yyyy * 6.0h);
int4 exp;
float4 result;
bool4 ok;
result.x = _skOutParamHelper0_frexp(value.x, exp);
ok.x = result.x == 0.75 && exp.x == 3;
result.xy = _skOutParamHelper1_frexp(value.xy, exp);
ok.y = result.y == 0.75 && exp.y == 3;
result.xyz = _skOutParamHelper2_frexp(value.xyz, exp);
ok.z = result.z == 0.75 && exp.z == 3;
result = _skOutParamHelper3_frexp(value, exp);
ok.w = result.w == 0.75 && exp.w == 3;
_out.sk_FragColor = all(ok) ? _uniforms.colorGreen : _uniforms.colorRed;
return _out;
}