Hello, I'm making a shader system without the effect framework and I'm stuck setting the desired constant buffer. This is how my CB layout in the shader looks like: // World transform cbuffer cbWorldTransform: register (b0) { matrix g_matWorld; } // Camera cbuffer cbuffer cbCamera: register (b1) { // some camera matrices here }; I'm having problems setting just the camera cbuffer: whenever I want to set the camera CB the values go into the WorldTransform constant buffer instead. I thought this was controlled by the startSlot parameter in the VSSetConstantBuffers function, so if I wanted to set the camera CB I would write it like this: m_devContext->VSSetConstantBuffers(1,1,myBuffers) I thoughts that this startSlot param would index myBuffers AND the shader CBs, but it seems that it only indexes the buffers in myBuffers array. So now if I want to set the camera cbuffer I must also set the WorldTransform cbuffer, is there a way to set camera CB only? What am I missing?

Got it to work now: It works just the opposite as I expected: the start slot is for the shader CB index, while you must specify the buffer as a single element (I always passed in an entire array of ID3D11Buffers since I thought it would also automatically index them), so it was more of a normal programmatical error.

I do perform shader reflection, just as you do in your open source engine, I downloaded it a while ago to checked it out :D thanks for that, it proved quite helpful many times!

Thanks for the help - I got it.

1. Simply set up your D3D11_INPUT_ELEMENT_DESC() like this (note the slot# increasing each time)
{ "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },
{ "COLOR0", 0, DXGI_FORMAT_R32G32B32_FLOAT, 1, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },
{ "float0", 0, DXGI_FORMAT_R32_FLOAT, 2, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },

2. Then register each position/color0/color1 buffer with DX like normal with CreateBuffer(),

3. Then, using an array of strides, offsets and the bufferObjects you created in step 2, do this:
UINT strides[3] = {12, 12, 4};
UINT offsets[3] = {0, 0, 0};
ID3D11Buffer** m_ppDXBufferObjects[3] = (buffer objects you created in step 2)

pImmediateContext->IASetVertexBuffers(0, 3, m_ppDXBufferObjects, strides, offsets);