Results 1 to 4 of 4

Thread: Z-Buffers on Radeon 8500

  1. #1
    Junior Member Newbie
    Join Date
    Jan 2002
    Location
    Britain
    Posts
    18

    Z-Buffers on Radeon 8500

    I know this is very specific to that card and this usage, but I would like to know if I can explicitly create a depth pbuffer (using WGL) rather than having to request a colour buffer as well?

    Thanks for any help.

  2. #2
    Junior Member Newbie
    Join Date
    Feb 2001
    Location
    Marlboro, MA, USA
    Posts
    25

    Re: Z-Buffers on Radeon 8500

    There's no mechanism in OpenGL that allows you to do this on a Radeon 8500 or any other card. Z-Buffers (as with the color buffer and stencil buffer) are attached to the pixel format.

    D3D has this capability. Hopefully OpenGL 2.0 will have it, but right now it isn't possible.

  3. #3
    Junior Member Newbie
    Join Date
    Jan 2002
    Location
    Britain
    Posts
    18

    Re: Z-Buffers on Radeon 8500

    Thanks for this info. It was probably expecting a bit much anyway to cast a 32-bit Z-buffer to a color bitmap I could use as a shadow depth texture. I'll have to have a rethink...

  4. #4
    Senior Member OpenGL Pro
    Join Date
    Sep 2000
    Location
    Santa Clara, CA
    Posts
    1,096

    Re: Z-Buffers on Radeon 8500

    We support pbuffer pixel formats without color buffers. These are primarily useful for rendering to and then copying to a shadow map (lets you use a shadow map larger than your window), but they can be used for other things as well.

    - Matt

Similar Threads

  1. ARB solution for GF3/4 and Radeon 8500?
    By Arath in forum OpenGL: Advanced Coding
    Replies: 11
    Last Post: 01-24-2003, 05:41 PM
  2. Which driver for radeon 8500?
    By in forum OpenGL: User Software
    Replies: 1
    Last Post: 05-28-2002, 09:10 AM
  3. ati radeon 8500 and counterstrike
    By in forum OpenGL: User Software
    Replies: 0
    Last Post: 02-12-2002, 02:26 PM
  4. Shadow Depth Buffers on Radeon 8500
    By Mahjii in forum OpenGL: Advanced Coding
    Replies: 3
    Last Post: 01-17-2002, 07:28 AM
  5. Radeon 8500
    By bonedaddy in forum OpenGL: User Software
    Replies: 0
    Last Post: 01-09-2002, 10:58 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Proudly hosted by Digital Ocean