tests/language-feature/pointer/pointer-self-reference.slang


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39

// pointer-self-reference.slang

// We are disabling this test because '&' is intentionally not supported.
// Design for pointers in Slang are not yet finalized.
//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-cpu -compute -output-using-type -shaderobj

//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
RWStructuredBuffer<int> outputBuffer;

struct Thing
{
    int value;
    Ptr<Thing> next;
};

[numthreads(4, 1, 1)]
void computeMain(int3 dispatchThreadID: SV_DispatchThreadID)
{
    int idx = dispatchThreadID.x;
    
    Thing things[2];
    
    things[0].next = __getAddress(things[1]);
    things[0].value = 27;
    
    things[1].next = __getAddress(things[0]);
    things[1].value = idx * idx;
    
    Ptr<Thing> cur = __getAddress(things[0]);
    
    for (int i = 0; cur && i < idx; ++i)
    {
        cur = cur.next;
    }
    
    int v = cur.value;
    
    outputBuffer[idx] = v; 
}