Mercurial > sdl-ios-xcode
annotate README.QNX @ 637:6862d4294870
te: 27 Jun 2003 21:16:01 +0100
From: Alan Swanson
Subject: [SDL] New XFree 4.3 Video Mode Patch
The current patch to fix the issues with XFree 4.3 it is a bit of
overkill to a simple problem. Default screen settings should be set in
X, not selected by SDL with environment variables. Any program or user
using non-standard or unset display modes get what they deserve :-)
If you look at the unsorted list of modes returned by X, here's mine;
1280 x 1024 @ 85.0 >
1024 x 768 @ 100.3 > USER
800 x 600 @ 125.5 > SET
640 x 480 @ 124.9 >
1280 x 1024 @ 75.0 ]
1280 x 1024 @ 60.0 ]
1280 x 960 @ 85.0 ] X11
1280 x 960 @ 60.0 ] AUTO
1152 x 864 @ 75.0 ]
1152 x 768 @ 54.8 ]
960 x 720 @ 120.0 ]
...
640 x 400 @ 85.1 ] 256k
576 x 432 @ 150.0 ] 249k PIXEL
640 x 350 @ 85.1 ] 224k COUNT
576 x 384 @ 109.6 ] 221k
...
The user set modes come first followed by X set modes which are ordered
by decreasing number of pixels and refresh.
The reason why every other library or program not using SDL was working
is due to SDL scanning the modes in reverse getting X11 provided modes
modes with the lowest refresh.
The solution is to scan forward for the first user set mode or highest X
mode. The qsort still keeps user set modes above higher refresh modes
added by X.
For the best match we still reverse search for the nearest larger size
and then try to find a higher version of it.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sat, 28 Jun 2003 17:16:52 +0000 |
parents | bce7171e7a85 |
children | 8bedd6d61642 |
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1 README by Mike Gorchak <mike@malva.ua>, <lestat@i.com.ua> |
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3 OpenGL in window mode works well and stable, in fullscreen |
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4 mode too, but fullscreen mode has not been heavily tested. |
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5 If you have QNX RtP 6.1.0 w/ or w/o Patch A you must download |
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6 new Photon3D runtime from http://developers.qnx.com. The versions |
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7 of OS before 6.1.0 are not supported. |
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8 |
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9 Problems: |
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10 1. While creating OpenGL context software renderer mode is |
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11 artificially selected (QSSL made acceleration only for Voodoo |
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12 boards in fullscreen mode, sorry but I don't have this board, |
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13 if you want acceleration - you may remove some line in source |
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14 code). |
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15 2. Photon has some errors in detecting how much bits per pixel |
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16 videomode has. |
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17 3. No shared libraries yet. We need manually set flag to |
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18 'configure' --disable-shared. |
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19 4. Due to Photon API limitation, flag SDL_HWSURFACE supported on- |
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20 ly in case of desktop bpp is equal requested bpp in window mo- |
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21 de. |
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22 |
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23 Some building issues: |
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24 |
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25 Run configure script without x11 support, e.g.: |
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26 |
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27 a) for OpenGL support: |
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28 ./configure --prefix=/usr/local \ |
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29 --disable-video-x11 \ |
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30 --disable-shared |
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32 b) without OpenGL support: |
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33 ./configure --prefix=/usr/local \ |
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34 --disable-video-x11 \ |
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35 --disable-shared \ |
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36 --disable-video-opengl |
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38 In test directory also run ./configure script without x11 |
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39 support, e.g.: |
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40 |
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41 ./configure --with-sdl-prefix=/usr/local \ |
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42 --with-sdl-exec-prefix=/usr/local \ |
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43 --prefix=/usr/local --without-x |
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