cgD3D10BindProgram(3)

NAME
cgD3D10BindProgram - activate a program with D3D

SYNOPSIS
  #include <Cg/cgD3D10.h>
  HRESULT cgD3D10BindProgram( CGprogram program );

PARAMETERS
The program to activate with D3D.

RETURN VALUES
Returns D3D_OK if the function succeeds.

Returns the D3D failure code if the function fails due to a D3D call.

DESCRIPTION
cgD3D10BindProgram activates a program with D3D. The program is activated using ID3D10Device::SetVertexShader or ID3D10Device::SetPixelShader depending on the program's profile type.

D3D allows only one vertex shader and one pixel shader to be active at any given time, so activating a program of a given type implicitly deactivates any other program of a that type.

EXAMPLES
  // vertexProg and pixelProg are CGprograms initialized elsewhere
  // pDev is an ID3D10Device interface intialized elsewhere
  ...
  HRESULT hr = cgD3D10BindProgram(vertexProg);
  HRESULT hr2 = cgD3D10BindProgram(pixelProg);
  // Draw a quad using the vertex and pixel shader
  // A vertex and index buffer are set up elsewhere.
  HRESULT hr3 = pDev->DrawIndexedPrimitve(D3DPT_TRIANGLELIST, 0, 4, 0, 2);

ERRORS
cgD3D10Failed is generated if a D3D function returns an error.

CGD3D10ERR_NOTLOADED is returned if program was not loaded with the cgD3D10LoadProgram.

CGD3D10ERR_NODEVICE is returned if a required D3D device is NULL. This usually occurs when an expanded interface routine is called but a D3D device has not been set with cgD3D10SetDevice.

HISTORY
cgD3D10BindProgram was introduced in Cg 2.1.

SEE ALSO
cgD3D10LoadProgram, cgD3D10SetTextureParameter