empty-struct2.slang

//TEST(smoke,compute):COMPARE_COMPUTE: -shaderobj
//TEST(smoke,compute):COMPARE_COMPUTE:-cpu -shaderobj

// This is a basic test for Slang compute shader.

//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
RWStructuredBuffer<uint> outputBuffer;

interface IInterface
{
    associatedtype T;
    T getT();
    [mutating]
    void setT(T val);
}
interface IEmptyS
{
    float emptyFunc();
};
struct EmptyS : IEmptyS
{
    float emptyFunc() {return 0.0;}    
};

struct Empty<TT : IEmptyS> : IInterface
{
    typedef TT T;
    TT value = TT();
    float a = 0;
    TT getT()
    {
        return value;
    }
    [mutating]
    void setT(TT val)
    {
        value = val;
        a = value.emptyFunc();
    }
}

void test<Obj : IInterface>(Obj obj)
{
    Obj.T v = obj.getT();
    obj.setT(v);
}

[numthreads(4, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
    Empty<EmptyS> obj = {};
    test(obj);
    outputBuffer[dispatchThreadID.x] = dispatchThreadID.x;
}