Results 1 to 2 of 2

Thread: glBlend issues

  1. #1
    Guest

    glBlend issues

    All,

    I am having problems with drawing glDrawPixels for RGB/RGBA 16 bits (per channel) images. This is using a NVIDIA Quadro (on Windows XP)

    The following is quite fast
    glDrawPixels(width, height, GL_RGBA, GL_UNSIGNED_SHORT, &raster[0]);

    But with blending turned on the performance is really slooow. I thought I could get decent performance with a Quadro!

    Are there any workarounds?

    Thanks in advance!
    Sampo

  2. #2
    Senior Member Regular Contributor
    Join Date
    Apr 2002
    Location
    St. Louis, MO USA
    Posts
    177

    Re: glBlend issues

    Yes there is a workaround. Use texture maps instead of glDrawPixels.

Similar Threads

  1. AMD Lag Issues?
    By kidx86 in forum OpenGL: Linux
    Replies: 0
    Last Post: 07-25-2013, 07:09 PM
  2. glBlend help
    By thegrimace in forum OpenGL: Basic Coding
    Replies: 10
    Last Post: 11-25-2009, 08:05 AM
  3. glBlend
    By kentut in forum OpenGL: Basic Coding
    Replies: 3
    Last Post: 07-11-2003, 07:37 AM
  4. glBlend calls only work from within display?
    By ribot in forum OpenGL: Basic Coding
    Replies: 2
    Last Post: 08-20-2002, 07:57 AM
  5. A pane with glBlend ?
    By in forum OpenGL: Basic Coding
    Replies: 0
    Last Post: 10-25-2001, 12:29 AM

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