I have a problem where my IA's output is not the same as my VS's input.

My VS is very straightforward, taking in a position, and outputting a position:

float4 main(float3 position : POSITION, float2 texcoord : TEXCOORD, float3 normal : NORMAL, float3 tangent : TANGENT) : SV_POSITION {
	return float4(position, 1.0f);
}

I thought that it could be the format in my input layout, but I do not see a problem with it.

static constexpr D3D12_INPUT_ELEMENT_DESC input_layout[] = {
 	{ "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0,        D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
 	{ "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT,  0, D3D12_APPEND_ALIGNED_ELEMENT, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
 	{ "NORMAL",  0, DXGI_FORMAT_R32G32B32_FLOAT, 0, D3D12_APPEND_ALIGNED_ELEMENT, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
 	{ "TANGENT", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, D3D12_APPEND_ALIGNED_ELEMENT, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 }
};

My VS file is “vs_5_0”, just like how I compile it.

I do not see really any other option that could be affecting the VS and its inputs.