skia2/tests/sksl/shared/SwizzleByIndex.metal
Brian Osman 58134e1408 Fix const globals in Metal
We were emitting this at global scope (not in Globals). That would lead
to errors about the variable needing to be in the constant address
space. (You can see the result in ConstArray.metal - the old code was
invalid). Also, we were already making references use _globals, so the
code was double-wrong (or half-right, depending on your perspective).

After the core change, writeVarDeclaration was only used for local
scope, and writeModifiers never used the 'globalContext' parameter.

The removal of finishLine() changed every test output, unfortunately.

Change-Id: Icc1356ba2cc3c339b2f5759b3d18523fd39395bc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/408356
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
2021-05-13 21:11:10 +00:00

27 lines
829 B
Metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Uniforms {
float4 testInputs;
float4 colorBlack;
float4 colorGreen;
float4 colorRed;
};
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;
float4 _0_v = _uniforms.testInputs;
int4 _1_i = int4(_uniforms.colorBlack);
float _2_x = _0_v[_1_i.x];
float _3_y = _0_v[_1_i.y];
float _4_z = _0_v[_1_i.z];
float _5_w = _0_v[_1_i.w];
_out.sk_FragColor = all(float4(_2_x, _3_y, _4_z, _5_w) == float4(-1.25, -1.25, -1.25, 0.0)) ? _uniforms.colorGreen : _uniforms.colorRed;
return _out;
}