Last changed at 29 Jul 2003.

=========================================================================

OpenGL:

mode too, but fullscreen mode has not been heavily tested yet.

    If you have QNX RtP version 6.1.0 and above you must download

new Photon3D runtime from http://developers.qnx.com or install it

from public repository or from public CD, available with QNX. The

versions of OS before 6.1.0 are not supported.

    While  creating  OpenGL  context  software  renderer  mode is

artificially selected (QSSL  made  acceleration  only for  Voodoo

boards in fullscreen mode, sorry but I  don't have  this board to

test OpenGL - maybe it work or maybe not :)). If you want accele-

ration - you may remove some line in source code: find  the  file

SDL_ph_video.c and remove the following

    OGLAttrib[OGLargc++]=PHOGL_ATTRIB_FORCE_SW;

line in the ph_SetupOpenGLContext() function or  change  argument

to the PHOGL_ATTRIB_FORCE_HW or PHOGL_ATTRIB_FAVOR_HW.

=========================================================================

Wheel and multibutton mouses:

    Photon emitting keyboard events (key up and down) when  moved

mouse wheel. But key_scan field appears valid according to flags,

and it contain zero. It is base method of detecting  mouse  wheel

events under photon. It looks like a hack, but it works for me :)

on different PC configurations.

I'm tested it on:

1. Genius Optical NetScroll/+ (1 wheel)

2. A4Tech Optical GreatEye WheelMouse, model: WOP-35. (2 wheels +

   2 additional buttons). Wheel for vertical scrolling  works  as

   usual, but second wheel for horizontal scrolling emitting  two

   consequented events up or down, so it can  provide  more  fast

   scrolling then the  first  wheel. Additional  buttons  doesn't

   emitting any events, but its look like  handled by  photon  in

   unusual way - like click to front, but works not with any win-

   dow, looks like bug-o-feature :).

=========================================================================

CDROM handling issues:

    Access to CDROM can be provided only with 'root'  previleges.

I can't do anything with this fact. /dev/cd0 have  the brw-------

flags and root:root rights.

=========================================================================

Video Overlays:

    Overlays can flickering during the window movement, resizing,

etc. It happens because photon driver  updates  the  real  window

contents behind the overlay, then draws the temporary  chroma key

color over window contents. It can be done without the chroma key

using but it cause overlay will be  always  on top. So flickering

during the movement much better in that case.

    Double buffering code temporary disabled in the photon driver

code, beacuse on my GF2-MX it  cause  accidently  buffer  switch,

which going to the old frame showing. S3 Savage3D have  the  same

problem, but ATI Rage 128 has not this problem. I think it can be

fixed later. Current code works very fine, so maybe double buffe-

ring is not needed right now.

    Something strange appears when you tried to move window  with

overlay beyond the left border of the screen. Overlay  trying  to

stay at position x=0, but when tried to move  it  a  bit  more it

jumps  at  posituin  x=-60. Really  strange, looks  like  overlay

doesn't love the negotive coordinates.

=========================================================================

Shared library building:

    Shared  library can be  built, but before  running autogen.sh

script you  need  manually  delete  the  libtool  m4  stuff  from

the acinclude.m4 file (it comes after ESD  detection  code  up to

end of the file). Because libtool stuff in the  acinclude.m4 file

very old and doesn't know anything about the QNX. Just  remove it

and run autogen.sh script.

=========================================================================

    Feel free to not pass --disable-shared option  to  configure,

if you read comment above about 'Shared library building'. Other-

wise this option is strongly  recomended, because  the sdl-config

script will be unfunctional.