[prev in list] [next in list] [prev in thread] [next in thread] 

List:       mesa3d-dev
Subject:    [Mesa3d-dev] GLXGetVisualConfigs byte order issue?
From:       Peter_Åstrand <astrand () cendio ! se>
Date:       2005-06-13 13:06:10
Message-ID: Pine.LNX.4.61.0506131455270.9290 () maggie ! lkpg ! cendio ! se
[Download RAW message or body]

It seems like there's some issue with GLXGetVisualConfigs wrt byte order. 
With Mesa 6.X, if I run "glxinfo -v" locally, all my visuals are of render 
type RGBA. Example:

Visual ID: 32  depth=24  class=DirectColor
     bufferSize=24 level=0 renderType=rgba doubleBuffer=0 stereo=0
     rgba: redSize=8 greenSize=8 blueSize=8 alphaSize=0
     auxBuffers=0 depthSize=24 stencilSize=8
     accum: redSize=16 greenSize=16 blueSize=16 alphaSize=0
     multiSample=0  multiSampleBuffers=0
     visualCaveat=Slow
     Opaque.

However, if I run glxinfo (or xglinfo) on a remote machine with a 
different byte order, it claims that the render type is COLOR INDEX. On a 
Solaris 8 machine, running /usr/openwin/demo/GL/xglinfo gives:

DirectColor visual: ID = 0x32 (hex) 50 (decimal), screen = 0, gamma = 2.22
   SINGLE buffered MONO COLOR INDEX visual with (Z Stencil)
   GL Sizes: ColorIndex=24, Z=24, Stencil=8
   number of sample buffers=0, samples per pixel =0
   ERROR: CI visual, but RGB has non-zero sizes (8,8,8)
   ERROR: CI visual, but Accum has non-zero sizes (16,16,16,0)
   Core X: depth=24, colormapSize=256 RGB: masks=(0xff0000,0xff00,0xff) bits=8

Note the "COLOR INDEX" output. Also, when using "+printRawVisualInfo", it 
says "rgba=0".

When running "glxinfo" on a IRIX 6.5 machine, still using the same 
display, the output is:

    visual  x  bf lv rg d st  r  g  b a  ax dp st accum buffs  ms
  id dep cl sp sz l  ci b ro sz sz sz sz bf th cl  r  g  b  a ns b
-----------------------------------------------------------------
   -1 -1 ??  . 16  . c  y  .  5  6  5  .  . 16  .  .  .  .  .  . .
   -1 -1 ??  . 16  . c  y  .  5  6  5  .  . 16  8 16 16 16  .  . .
   -1 -1 ??  . 24  . c  y  .  5  6  5  8  . 16  8 16 16 16 16  . .
   -1 -1 ??  . 24  . c  .  .  5  6  5  8  . 16  8 16 16 16 16  . .
   -1 -1 ??  . 16  . c  y  .  5  6  5  .  . 16  .  .  .  .  .  . .
   -1 -1 ??  . 16  . c  y  .  5  6  5  .  . 16  8 16 16 16  .  . .
   -1 -1 ??  . 24  . c  y  .  5  6  5  8  . 16  8 16 16 16 16  . .
   -1 -1 ??  . 24  . c  .  .  5  6  5  8  . 16  8 16 16 16 16  . .

The problem seems limited to Mesa 6.X, and it seems to be a Xserver-side 
issue. I've tested some different versions:

XFree86 4.3.0, Mesa DRI G400, Mesa 4.0.4:   Works
Xorg 6.7.0, Mesa GLX Indirect, Mesa 5.0.2:  Works
xf4vnc 4.3.0.999: Mesa GLX Indirect, 5.0.2: Works
Xorg 6.8.2, Mesa DRI G400, Mesa 6.2.1:      Fails
xf4vnc cvs: Mesa GLX Indirect, 6.2.1:       Fails

Any ideas?

-- 
Peter Åstrand		Chief Developer
Cendio			www.thinlinc.com
Teknikringen 3		www.cendio.se
583 30 Linköping        Phone: +46-13-21 46 00
-------------------------------------------------------
This SF.Net email is sponsored by: NEC IT Guy Games.  How far can you shotput
a projector? How fast can you ride your desk chair down the office luge track?
If you want to score the big prize, get to know the little guy.  
Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20
_______________________________________________
Mesa3d-dev mailing list
Mesa3d-dev@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/mesa3d-dev

[prev in list] [next in list] [prev in thread] [next in thread]