yum-mirror/slang

Making it easier to work with shaders

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

Yong HeWarning on lossy implicit casts. (#2367)adaea0e99

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1// gh-487.slang
2//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj
3
4// This test is to confirm that we can apply builtin functions taht expect
5// a floating-point argument to an integer, with the compiler filling
6// in the implicit conversion. This is made tricky by the fact
7// that a builtin line `sqrt` is actually a constrained generic,
8// `sqrt<T:BuiltinFloatingPointType>` so that inference currently
9// fails to deduce `T=float` when presented with an `int` argument.
10
11int test(int val)
12{
13	int squared = val * val;
14	float result = sqrt(squared);
15	return int(result);
16}
17
18//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name gBuffer
19RWStructuredBuffer<int> gBuffer;
20
21[numthreads(4, 1, 1)]
22void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
23{
24	uint tid = dispatchThreadID.x;
25
26	int inVal = int(tid);
27	int outVal = test(inVal);
28
29	gBuffer[tid] = outVal;
30}