// Test using interface typed shader parameters wrapped inside a `StructuredBuffer`.

//TEST(compute):COMPARE_COMPUTE:-cpu
//TEST(compute):COMPARE_COMPUTE:-cuda

[anyValueSize(8)]
interface IInterface
{
    int run(int input);
}

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

//TEST_INPUT:ubuffer(data=[rtti(MyImpl) witness(MyImpl, IInterface) 1 0], stride=4):name=gCb
StructuredBuffer<IInterface> gCb;

//TEST_INPUT:ubuffer(data=[rtti(MyImpl) witness(MyImpl, IInterface) 1 0], stride=4):name=gCb1
StructuredBuffer<IInterface> gCb1;

[numthreads(4, 1, 1)]
void computeMain(uint3       dispatchThreadID : SV_DispatchThreadID)
{
    let tid = dispatchThreadID.x;

    let inputVal : int = tid;
    IInterface v0 = gCb.Load(0);
    IInterface v1 = gCb1[0];
    let outputVal = v0.run(inputVal) + v1.run(inputVal);

    gOutputBuffer[tid] = outputVal;
}

// Specialize gCb1, but not gCb2
//TEST_INPUT: globalExistentialType MyImpl
//TEST_INPUT: globalExistentialType __Dynamic
// Type must be marked `public` to ensure it is visible in the generated DLL.
public struct MyImpl : IInterface
{
    int val;
    int run(int input)
    {
        return input + val;
    }
};
public struct MyImpl2 : IInterface
{
    int val;
    int run(int input)
    {
        return input - val;
    }
};