Mirror's Edge PhysX support

[jp7677]

It seems that Mirror's Edge (and also some PhysX demos), or likely the PhysX version that comes with that, needs NvAPI_CUDA_EnumComputeCapableByTopology (0x36e39e6b) for working PhysX. Unfortunately this function is not exposed by NVAPI headers.

May be similar to NvAPI_GPU_CudaEnumComputeCapableGpus (

dxvk-nvapi/src/nvapi_gpu.cpp

Lines 639 to 681 in dc2c0bd

	NvAPI_Status __cdecl NvAPI_GPU_CudaEnumComputeCapableGpus(NV_COMPUTE_GPU_TOPOLOGY* pComputeTopo) {
	constexpr auto n = __func__;
	if (log::tracing())
	log::trace(n, log::fmt::ptr(pComputeTopo));
	if (!nvapiAdapterRegistry)
	return ApiNotInitialized(n);
	if (!pComputeTopo)
	return InvalidArgument(n);
	if (pComputeTopo->version != NV_COMPUTE_GPU_TOPOLOGY_VER1)
	return IncompatibleStructVersion(n, pComputeTopo->version);
	auto cudaCapableGpus = std::vector<NvPhysicalGpuHandle>(0);
	for (auto i = 0U; i < nvapiAdapterRegistry->GetAdapterCount(); i++) {
	auto adapter = nvapiAdapterRegistry->GetAdapter(i);
	if (!adapter->HasNvProprietaryDriver() || adapter->GetArchitectureId() < NV_GPU_ARCHITECTURE_GM000) // Maxwell is the oldest generation we can detect
	continue;
	cudaCapableGpus.push_back(reinterpret_cast<NvPhysicalGpuHandle>(adapter));
	}
	// Those flags match NVAPI on Windows for a normal desktop machine
	auto flags = NV_COMPUTE_GPU_TOPOLOGY_PHYSICS_CAPABLE | NV_COMPUTE_GPU_TOPOLOGY_PHYSICS_ENABLE | NV_COMPUTE_GPU_TOPOLOGY_PHYSICS_RECOMMENDED;
	switch (pComputeTopo->version) {
	case NV_COMPUTE_GPU_TOPOLOGY_VER1: {
	auto pComputeTopoV1 = reinterpret_cast<NV_COMPUTE_GPU_TOPOLOGY_V1*>(pComputeTopo);
	pComputeTopoV1->gpuCount = cudaCapableGpus.size();
	for (auto i = 0U; i < cudaCapableGpus.size(); i++) {
	pComputeTopoV1->computeGpus[i].hPhysicalGpu = cudaCapableGpus[i];
	pComputeTopoV1->computeGpus[i].flags = flags;
	}
	break;
	}
	default:
	return Error(n); // Unreachable, but just to be sure
	}
	return Ok(n);
	}

).

Ref: 5455377

Related: SveSop@7b69abf