NAME
cgD3D9UnbindProgram - de-activate a program with D3D
SYNOPSIS
#include <Cg/cgD3D9.h> HRESULT cgD3D9UnbindProgram( CGprogram program );PARAMETERS
- program
The program to de-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
cgD3D9UnbindProgram de-activates a program with D3D. The program is de-activated using IDirect3DDevice9::SetVertexShader or IDirect3DDevice9::SetPixelShader with a NULL argument depending on the program's profile type.
EXAMPLES
// vertexProg and pixelProg are CGprograms initialized elsewhere // pDev is an IDirect3DDevice9 interface intialized elsewhere ... HRESULT hr = cgD3D9BindProgram(vertexProg); HRESULT hr2 = cgD3D9BindProgram(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); cgD3D9UnbindProgram(vertexProg); cgD3D9UnbindProgram(pixelProg);ERRORS
cgD3D9Failed is generated if a D3D function returns an error.
CGD3D9ERR_NOTLOADED is returned if program was not loaded with the cgD3D9LoadProgram.
CGD3D9ERR_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 cgD3D9SetDevice.
HISTORY
cgD3D9UnbindProgram was introduced in Cg 3.0.
SEE ALSO