skia2/tests/sksl/shared/StructsInFunctions.metal
Brian Osman bf7b4b8890 Add SkSL test for functions that operate on structs
This is a known deficiency of runtime effects, next step is to fix how
they manage function signatures to solve the problem.

Bug: skia:10939
Change-Id: Id934e0acdf774b03bd6edce78d7b2c077bdeae00
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/360603
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2021-01-28 17:01:59 +00:00

48 lines
1.0 KiB
Metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct S {
float x;
int y;
};
struct Uniforms {
float4 colorRed;
float4 colorGreen;
};
struct Inputs {
};
struct Outputs {
float4 sk_FragColor [[color(0)]];
};
void modifies_a_struct(thread S& s);
void _skOutParamHelper0_modifies_a_struct(thread S& s) {
S _var0 = s;
modifies_a_struct(_var0);
s = _var0;
}
S returns_a_struct() {
S s;
s.x = 1.0;
s.y = 2;
return s;
}
float accepts_a_struct(S s) {
return s.x + float(s.y);
}
void modifies_a_struct(thread S& s) {
s.x++;
s.y++;
}
fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
Outputs _out;
(void)_out;
S s = returns_a_struct();
float x = accepts_a_struct(s);
_skOutParamHelper0_modifies_a_struct(s);
bool valid = (x == 3.0 && s.x == 2.0) && s.y == 3;
_out.sk_FragColor = valid ? _uniforms.colorGreen : _uniforms.colorRed;
return _out;
}