xref: /aosp_15_r20/external/skia/tests/sksl/shared/Control.metal (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1*c8dee2aaSAndroid Build Coastguard Worker#include <metal_stdlib>
2*c8dee2aaSAndroid Build Coastguard Worker#include <simd/simd.h>
3*c8dee2aaSAndroid Build Coastguard Worker#ifdef __clang__
4*c8dee2aaSAndroid Build Coastguard Worker#pragma clang diagnostic ignored "-Wall"
5*c8dee2aaSAndroid Build Coastguard Worker#endif
6*c8dee2aaSAndroid Build Coastguard Workerusing namespace metal;
7*c8dee2aaSAndroid Build Coastguard Workerstruct Uniforms {
8*c8dee2aaSAndroid Build Coastguard Worker    float unknownInput;
9*c8dee2aaSAndroid Build Coastguard Worker};
10*c8dee2aaSAndroid Build Coastguard Workerstruct Inputs {
11*c8dee2aaSAndroid Build Coastguard Worker};
12*c8dee2aaSAndroid Build Coastguard Workerstruct Outputs {
13*c8dee2aaSAndroid Build Coastguard Worker    half4 sk_FragColor [[color(0)]];
14*c8dee2aaSAndroid Build Coastguard Worker};
15*c8dee2aaSAndroid Build Coastguard Workerfragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
16*c8dee2aaSAndroid Build Coastguard Worker    Outputs _out;
17*c8dee2aaSAndroid Build Coastguard Worker    (void)_out;
18*c8dee2aaSAndroid Build Coastguard Worker    if (_uniforms.unknownInput > 5.0) {
19*c8dee2aaSAndroid Build Coastguard Worker        _out.sk_FragColor = half4(0.75h);
20*c8dee2aaSAndroid Build Coastguard Worker    } else {
21*c8dee2aaSAndroid Build Coastguard Worker        discard_fragment();
22*c8dee2aaSAndroid Build Coastguard Worker    }
23*c8dee2aaSAndroid Build Coastguard Worker    int i = 0;
24*c8dee2aaSAndroid Build Coastguard Worker    while (i < 10) {
25*c8dee2aaSAndroid Build Coastguard Worker        _out.sk_FragColor *= 0.5h;
26*c8dee2aaSAndroid Build Coastguard Worker        i++;
27*c8dee2aaSAndroid Build Coastguard Worker    }
28*c8dee2aaSAndroid Build Coastguard Worker    do {
29*c8dee2aaSAndroid Build Coastguard Worker        _out.sk_FragColor += 0.25h;
30*c8dee2aaSAndroid Build Coastguard Worker    } while (_out.sk_FragColor.x < 0.75h);
31*c8dee2aaSAndroid Build Coastguard Worker    for (int i = 0;i < 10; i++) {
32*c8dee2aaSAndroid Build Coastguard Worker        if (i % 2 == 1) break; else if (i > 100) return _out; else continue;
33*c8dee2aaSAndroid Build Coastguard Worker    }
34*c8dee2aaSAndroid Build Coastguard Worker    return _out;
35*c8dee2aaSAndroid Build Coastguard Worker}
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