skia2/tests/sksl/intrinsics/Pack.metal
John Stiles b6981fb6a4 Add float-packing intrinsics from sksl_gpu to Metal.
It turned out that Metal had equivalent intrinsics/casts all along; we
just needed to emit them.

Tests will be improved in a followup CL which adds the ES3-compatible
packing intrinsics into sksl_public.

Change-Id: Iec8a20b9f9fe9b1badea2944eb0b1f0a17c74560
Bug: skia:12351
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/446744
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2021-09-08 20:02:43 +00:00

23 lines
768 B
Metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Uniforms {
float2 a;
float4 b;
};
struct Inputs {
};
struct Outputs {
float4 sk_FragColor [[color(0)]];
};
fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
Outputs _out;
(void)_out;
_out.sk_FragColor.x = float(as_type<uint>(half2(_uniforms.a)));
_out.sk_FragColor.x = float(pack_float_to_unorm2x16(_uniforms.a));
_out.sk_FragColor.x = float(pack_float_to_snorm2x16(_uniforms.a));
_out.sk_FragColor.x = float(pack_float_to_unorm4x8(_uniforms.b));
_out.sk_FragColor.x = float(pack_float_to_snorm4x8(_uniforms.b));
return _out;
}