yum-mirror/slang

Making it easier to work with shaders

git clone https://git.yummers.dev/yum-mirror/slang

Yong HeSupport multi-level break + single-return conversion + general inline. (#2436)768e62f6c

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1// multi-level-break.slang
2
3//TEST(compute):COMPARE_COMPUTE: -shaderobj
4//DISABLE_TEST(compute):COMPARE_COMPUTE:-cpu -shaderobj
5
6int test(int r)
7{
8    int result = 0;
9iLoop:
10    for (int i = 0; i < 2; i++)
11    {
12    jLoop:
13        for (int j = 0; j < 3; j++)
14        {
15            for (;;)
16            {
17                result++;
18                if (r == 0)
19                {
20                    // When r == 0, we break out the outter most loop,
21                    // resulting the inner most statement being run only once.
22                    break iLoop;
23                }
24                else if (r == 1)
25                {
26                    // When r == 1, we break out the `j` loop,
27                    // resulting the inner most statement being run loop-i times.
28                    break jLoop;
29                }
30                else
31                {
32                    // When r takes other values, we break out the inner most loop p,
33                    // resulting the inner most statement being run i*j times.
34                    break;
35                }
36            }
37        }
38    }
39    return result;
40}
41
42//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
43RWStructuredBuffer<int> outputBuffer;
44
45[numthreads(1, 1, 1)]
46void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
47{
48    outputBuffer[0] = test(0);
49    outputBuffer[1] = test(1);
50    outputBuffer[2] = test(2);
51    outputBuffer[3] = 0;
52}