DX12 pseudo code of creating A PSO.

create_pso.cpp

D3D12_DESCRIPTOR_RANGE descriptors[] = {	// The descriptor table
	CDescriptorCBV(0),	// constant buffer view bound to register b0
	CDescriptorSRV(0),	// shader resource view bound to register t0
};
D3D12_STATIC_SAMPLER_DESC samplers[] = {
	CSampler(0, D3D12_FILTER_MIN_MAG_LINEAR_MIP_POINT, D3D12_TEXTURE_ADDRESS_MODE_WRAP),	// sampler bound to register s0 
};
ComPtr<ID3D12RootSignature> rootSignature = afCreateRootSignature(dimof(descriptors), descriptors, dimof(samplers), samplers);
ComPtr<ID3D12PipelineState> pipelineState = afCreatePSO(shader, nullptr, 0, BM_NONE, DSM_DEPTH_CLOSEREQUAL_READONLY, CM_DISABLE, rootSignature);