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// array-size-group-shared.slang
//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj -output-using-type
//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
RWStructuredBuffer<uint> outputBuffer;
interface IA
{
static const int M;
}
struct B : IA
{
static const int M = 2;
}
struct GenType<T : __BuiltinIntegerType, A: IA, let N : int, let M : int>
{
static const int HalfN = N > 1? N / A.M : 1;
static const int P = M + N;
// TODO(tfoley): What this test is testing seems to be outside
// the scope of what we ever intend to support in user code.
// Returning an `Ref<T>` is supposed to be a core-module-only
// thing, and even then is something that we would like to do less
// of over time.
//
// The only purpose of this test *seems* to be ensuring that this
// particular function (and the `groupshared` declaration inside
// it) "works," but the function itself is not something that we
// intend to be supported in Slang.
//
[ForceInline]
Ref<uint> weights(int index)
{
static groupshared uint w[P];
return w[index];
}
T sum(T arr[HalfN])
{
T rs = T(0);
for (int i = 0; i < P; i++)
weights(i) = i;
for (int i = 0; i < HalfN; i++)
rs += arr[i];
return rs;
}
}
[numthreads(1, 1, 1)]
void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
{
int arr[2] = { 1, 2 };
GenType<int, B, 4, 2> obj;
outputBuffer[0] = obj.sum(arr);
}
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