yum-mirror/slang

Making it easier to work with shaders

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

Yong HeMetal: misc fixes and enable more tests. (#4374)cfef0c6f6

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1// struct-bit-cast.slang
2
3//TEST(compute):COMPARE_COMPUTE: -shaderobj
4
5// Test that bit_cast works for bit-reinterpreting one struct type as another.
6
7struct Foo
8{
9    uint a;
10    float b;
11    float2 fvec;
12}
13
14struct Inner
15{
16    int v;
17    uint s;
18}
19
20struct Bar
21{
22    int u;
23    Inner i;
24    uint t;
25}
26
27int test0(int val)
28{
29    Bar b;
30    b.u = val;
31    b.i.v = asint(2.0f);
32    b.i.s = asuint(1.25);
33    b.t = asuint(0.25);
34    Foo f = bit_cast<Foo, Bar>(b);
35    return int(f.a) + (int)f.b + int(float(f.fvec.x / f.fvec.y)); // val + 2 + 5
36}
37
38struct Smaller
39{
40    int s;
41}
42
43struct Larger
44{
45    int x, y;
46}
47
48int test1()
49{
50    return 1;
51}
52
53
54//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
55RWStructuredBuffer<int> outputBuffer;
56
57[numthreads(4, 1, 1)]
58void computeMain(int3 dispatchThreadID : SV_DispatchThreadID)
59{
60    int tid = dispatchThreadID.x;
61    int inVal = tid;
62    int outVal = test0(inVal) + test1();
63    outputBuffer[tid] = outVal;
64}