skia2/tests/sksl/intrinsics/Modf.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

57 lines
2.0 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_modf(float _var0, thread float4& whole) {
float _var1;
float _skResult = modf(_var0, _var1);
whole.x = _var1;
return _skResult;
}
float2 _skOutParamHelper1_modf(float2 _var0, thread float4& whole) {
float2 _var1;
float2 _skResult = modf(_var0, _var1);
whole.xy = _var1;
return _skResult;
}
float3 _skOutParamHelper2_modf(float3 _var0, thread float4& whole) {
float3 _var1;
float3 _skResult = modf(_var0, _var1);
whole.xyz = _var1;
return _skResult;
}
float4 _skOutParamHelper3_modf(float4 _var0, thread float4& whole) {
float4 _var1;
float4 _skResult = modf(_var0, _var1);
whole = _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(2.5, -2.5, 8.0, -0.125);
const float4 expectedWhole = float4(2.0, -2.0, 8.0, 0.0);
const float4 expectedFraction = float4(0.5, -0.5, 0.0, -0.125);
bool4 ok = bool4(false);
float4 whole;
float4 fraction;
fraction.x = _skOutParamHelper0_modf(value.x, whole);
ok.x = whole.x == 2.0 && fraction.x == 0.5;
fraction.xy = _skOutParamHelper1_modf(value.xy, whole);
ok.y = all(whole.xy == float2(2.0, -2.0)) && all(fraction.xy == float2(0.5, -0.5));
fraction.xyz = _skOutParamHelper2_modf(value.xyz, whole);
ok.z = all(whole.xyz == float3(2.0, -2.0, 8.0)) && all(fraction.xyz == float3(0.5, -0.5, 0.0));
fraction = _skOutParamHelper3_modf(value, whole);
ok.w = all(whole == expectedWhole) && all(fraction == expectedFraction);
_out.sk_FragColor = all(ok) ? _uniforms.colorGreen : _uniforms.colorRed;
return _out;
}