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PBuffer Pain

Started by Thraddash Mar 20, 2003 at 2:15 AM 1 replies 650+ views
Original Post
Thraddash
Thraddash
I had a nice class set up encapsulating a pixelbuffer, and I have been trying to extend it so I can use it directly as a texture. After reading the docs, as far as I can tell this involves adding a few new attributes when I search for a pixel format, namely: 
WGL_BIND_TO_TEXTURE_RGB_ARB = true
WGL_TEXTURE_FORMAT_ARB = WGL_TEXTURE_RGB
WGL_TEXTURE_TARGET_ARB = WGL_TEXTURE_2D_ARB
Problem is, my program can't find a pixel format with all of these attributes. I'm running a GF4 Ti4400, which I'm pretty positive supports WGL_ARB_render_texture. The Pbuffer initialises fine if I omit the above attributes from the format search. Has anyone out there got any ideas what might be going wrong? [edited by - Thraddash on March 20, 2003 3:22:01 AM]
Crawl
Crawl
Those three attributes shouldn''t be added to your pixelformat discription, they are flags that need to be passed to wglCreatePbufferARB....

  
    int iFlags[] = { WGL_PBUFFER_LARGEST_ARB, 1, 
                     WGL_TEXTURE_FORMAT_ARB, WGL_TEXTURE_RGB_ARB,
                     WGL_TEXTURE_TARGET_ARB, WGL_TEXTURE_2D_ARB,
                     WGL_MIPMAP_TEXTURE_ARB, 1,
                     0 };

    // try to create our p-buffer

    m_hPBuffer = wglCreatePbufferARB( hCurrentDC, iPixelFormat,
                                      iWidth, iHeight, iFlags );

taken from my pixelbuffer source which can be found here under opengl projects...

hope it helps....

-Crawl
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Thraddash
Thraddash
*smacks self in head for stupidity*

Yep. That fixed the problem. Thanks.

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