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OpenGL and Delphi

Posted on 1997-09-17
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Last Modified: 2010-04-03
I've been trying to use the OpenGL libraries as shipped with  win95 OSR2 with D3 and it isn't playing. The problem I'm getting is that the creation of the rendering context is failing. Has anyone got any ideas of what is going wrong.

Also, does anyone know where I can find a version of the glaux libraries for Delphi or C++ Builder? (preferably both)

Thanks

 Adam
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Question by:AJFleming
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JimBob091197 earned 400 total points
ID: 1345324
I presume the call that's failing is the call to wglCreateContext.

If so, try the following BEFORE the call to wglCreateContext:
1)  Declare the following variables:
  pfd: TPixelFormatDescriptor;
  nPixelFormat: Integer;

2) Execute the following code:
  FillChar(pfd, SizeOf(pfd), 0);
 
  with pfd do
    begin
      nSize     := sizeof(pfd);
      nVersion  := 1;
      dwFlags   := PFD_DRAW_TO_WINDOW or PFD_SUPPORT_OPENGL;
      iPixelType:= PFD_TYPE_RGBA;
      cColorBits:= 24;
      cDepthBits:= 32;
      iLayerType:= PFD_MAIN_PLANE;
    end;
 
  nPixelFormat := ChoosePixelFormat(MyCanvas.Handle, @pfd);
  SetPixelFormat(MyCanvas.Handle, nPixelFormat, @pfd);

3) Now call wglCreateContext:
  hrc := wglCreateContext(MyCanvas.Handle);

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