dynamic-dispatch-12.slang

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

// Note: Not using `-shaderobj` because this test relies on
// setting up a `ConstantBuffer<IInterface>`, which currently
// doesn't work right on the shader object path for a bunch
// of complicated reasons.

//DISABLED_TEST(compute):COMPARE_COMPUTE:-dx11
//DISABLED_TEST(compute):COMPARE_COMPUTE:-cpu
//DISABLED_TEST(compute):COMPARE_COMPUTE:-vk
//DISABLED_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:cbuffer(data=[rtti(MyImpl) witness(MyImpl, IInterface) 1 0], stride=4):name=gCb
ConstantBuffer<IInterface> gCb;

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

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

    let inputVal : int = tid;
    let outputVal = gCb.run(inputVal) + gCb1.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.
export struct MyImpl : IInterface
{
    int val;
    int run(int input)
    {
        return input + val;
    }
};