xref: /aosp_15_r20/external/skia/tests/sksl/intrinsics/FindMSB.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    int a;
9*c8dee2aaSAndroid Build Coastguard Worker    uint b;
10*c8dee2aaSAndroid Build Coastguard Worker};
11*c8dee2aaSAndroid Build Coastguard Workerstruct Inputs {
12*c8dee2aaSAndroid Build Coastguard Worker};
13*c8dee2aaSAndroid Build Coastguard Workerstruct Outputs {
14*c8dee2aaSAndroid Build Coastguard Worker    half4 sk_FragColor [[color(0)]];
15*c8dee2aaSAndroid Build Coastguard Worker};
16*c8dee2aaSAndroid Build Coastguard Workerfragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
17*c8dee2aaSAndroid Build Coastguard Worker    Outputs _out;
18*c8dee2aaSAndroid Build Coastguard Worker    (void)_out;
19*c8dee2aaSAndroid Build Coastguard Worker    int _skTemp0;
20*c8dee2aaSAndroid Build Coastguard Worker    int _skTemp1;
21*c8dee2aaSAndroid Build Coastguard Worker    uint _skTemp2;
22*c8dee2aaSAndroid Build Coastguard Worker    _out.sk_FragColor.x = half((_skTemp0 = (_uniforms.a), _skTemp1 = (select(_skTemp0, ~_skTemp0, _skTemp0 < 0)), select(int(clz(_skTemp1)), int(-1), _skTemp1 == int(0))));
23*c8dee2aaSAndroid Build Coastguard Worker    _out.sk_FragColor.y = half((_skTemp2 = (_uniforms.b), select(int(clz(_skTemp2)), int(-1), _skTemp2 == uint(0))));
24*c8dee2aaSAndroid Build Coastguard Worker    return _out;
25*c8dee2aaSAndroid Build Coastguard Worker}
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