ID3D11DeviceContext::PSSetConstantBuffers method (d3d11.h)
Sets the constant buffers used by the pixel shader pipeline stage.
void PSSetConstantBuffers( [in] UINT StartSlot, [in] UINT NumBuffers, [in, optional] ID3D11Buffer * const *ppConstantBuffers );
Index into the device's zero-based array to begin setting constant buffers to (ranges from 0 to D3D11_COMMONSHADER_CONSTANT_BUFFER_API_SLOT_COUNT - 1).
Number of buffers to set (ranges from 0 to D3D11_COMMONSHADER_CONSTANT_BUFFER_API_SLOT_COUNT - StartSlot).
[in, optional] ppConstantBuffers
Array of constant buffers (see ID3D11Buffer) being given to the device.
The method will hold a reference to the interfaces passed in. This differs from the device state behavior in Direct3D 10.
The Direct3D 11.1 runtime, which is available on Windows 8 and later operating systems, can bind a larger number of ID3D11Buffer resources to the shader than the maximum constant buffer size that is supported by shaders (4096 constants – 432-bit components each). When you bind such a large buffer, the shader can access only the first 4096 432-bit component constants in the buffer, as if 4096 constants is the full size of the buffer.
To enable the shader to access other parts of the buffer, call PSSetConstantBuffers1 instead of PSSetConstantBuffers. PSSetConstantBuffers1 has additional parameters pFirstConstant and pNumConstants.