dynamic-dispatch-11.slang

// Test using interface typed shader parameters with dynamic dispatch.

// TODO: This test has been disabled because it relies on
// `ConstantBuffer<IInterface>` which we expect to change
// implementation approaches for soon.

//DISABLE_TEST(compute):COMPARE_COMPUTE:-dx11 -shaderobj
//DISABLE_TEST(compute):COMPARE_COMPUTE:-vk -shaderobj
//DISABLE_TEST(compute):COMPARE_COMPUTE:-cpu -xslang -disable-specialization -shaderobj
//DISABLE_TEST(compute):COMPARE_COMPUTE:-cuda -xslang -disable-specialization -shaderobj

[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:cbuffer(data=[rtti(MyImpl) witness(MyImpl, IInterface) 1 0], stride=4):name=gCb
ConstantBuffer<IInterface> gCb;

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

    let inputVal : int = tid;
    let outputVal = gCb.run(inputVal);

    gOutputBuffer[tid] = outputVal;
}

// No type input for dynamic dispatch //TEST_INPUT: globalExistentialType MyImpl
// Type must be marked `public` to ensure it is visible in the generated DLL.
export struct MyImpl : IInterface
{
    int val;
    int run(int input)
    {
        return input + val;
    }
};