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annotate README.PicoGUI @ 1555:780fd5b61df1

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Fixed bug #89 Date: Sun, 23 Oct 2005 16:39:03 +0200 From: "A. Schmid" <sahib@phreaker.net> Subject: [SDL] no software surfaces with svgalib driver? Hi, I noticed that the SDL (1.2.9) svgalib driver only makes use of linear addressable (framebuffer) video modes. On older systems (like one of mine), linear addressable modes are often not available. Especially for cards with VESA VBE < 2.0 the svgalib vesa driver is unusable, since VESA only supports framebuffering for VBE 2.0 and later. The changes necessary to add support for software surfaces seem to be relatively small. I only had to hack src/video/svga/SDL_svgavideo.c (see attached patch). The code worked fine for me, but it is no more than a proof of concept and should be reviewed (probably has a memory leak when switching modes). It also uses the vgagl library (included in the svgalib package) and needs to be linked against it. -Alex
author Sam Lantinga <slouken@libsdl.org>
date Sun, 19 Mar 2006 12:05:16 +0000
parents 706de3956894
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1 ========================
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2 Using SDL with PicoGUI
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3 ========================
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4
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5 - Originally contributed by Micah Dowty <micahjd@users.sourceforge.net>
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7 PicoGUI is a scalable GUI system with a unique architecture, primarily focused
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8 on scalability to various embedded systems. You can find more information
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9 including a FAQ at http://picogui.org
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11 To use the patch:
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13 1. When compiling, add the "--enable-video-picogui" switch to ./configure
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15 2. When running your program, ensure that the picogui driver for SDL
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16 is in use by setting the SDL_VIDEODRIVER environment variable
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17 to "picogui".
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19 3. The program must also be linked to the C client library for PicoGUI
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20 (libpgui.so). If the program is being compiled with a patched SDL
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21 installed this should be done automatically. If you want to use an
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22 existing binary with PicoGUI, you can set the LD_PRELOAD environment
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23 variable to the path of your libpgui.so file.
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24
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25 Capabilities:
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26
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27 So far only basic functionality is provided on true color (linear16/24/32)
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28 devices. Accessing a memory mapped bitmap, updating the display, and handling
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29 mouse/keyboard input. This functionality has been tested with several
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30 applications, including mplayer, Xine, sldroids, and Abuse.
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31
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32 TODO list:
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33
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34 - YUV overlays will be helpful for watching video on set top boxes or other
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35 embedded devices that have some graphics acceleration hardware
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37 - Account for rotated bitmap storage in pgserver
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38
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39 - Support for hiding or changing the cursor
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40
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41 - The display should be centered when the SDL application is smaller
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42 than the PicoGUI panel
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43
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44 - Fullscreen or any other special modes
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45
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46 - Support for indexed and grayscale modes
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47
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48 - Probably much more...
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50 --- The End ---