Last changed at 29 Jul 2003.

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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.

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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 :).

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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.

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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.

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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.

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

Some building issues:

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.

Run configure script without x11 support, e.g.:

a) for OpenGL support:

./configure --prefix=/usr/local \

--disable-video-x11 \

--disable-shared

./configure --prefix=/usr/local \

--disable-video-x11 \

--disable-shared \

--disable-video-opengl

In test directory also run ./configure script without x11

support, e.g.:

./configure --with-sdl-prefix=/usr/local \

--with-sdl-exec-prefix=/usr/local \

--prefix=/usr/local --without-x