yum-mirror/slang

Making it easier to work with shaders

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

Yong HeFix crash during loop unrolling. (#5920)5c9f011fa

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1//TEST:COMPARE_COMPUTE(filecheck-buffer=CHECK): -output-using-type
2
3//TEST_INPUT:set buffer = ubuffer(data=[0 0 0 0], stride=4)
4RWStructuredBuffer<float> buffer;
5
6struct Foo<let D : int>
7{
8    float load()
9    {
10        int idx[D];
11        [ForceUnroll]
12        for (int i = 0; i < D; ++i)
13            idx[i] = 0;
14        [ForceUnroll]
15        for (int i = 0; i < D-2; ++i)
16            idx[i] = 0;
17        float result = 100.0;
18        [ForceUnroll]
19        for (int i = 0; i < 1; i++)
20            result += buffer[idx[0]];
21
22        return result;
23    }
24}
25
26//TEST_INPUT:set result = out ubuffer(data=[0 0 0 0], stride=4)
27uniform RWStructuredBuffer<float> result;
28
29[shader("compute")]
30void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
31{
32    Foo<2> biases = {};
33
34    // Test that we can unroll loops of 0 iterations.
35    result[0] = biases.load();
36
37    // CHECK: 100.0
38}