1 =================================================================
2 Patch version 0.9 of SDL(Simple DirectMedia Layer) for Nano-X API
3 =================================================================
5 Authors: Hsieh-Fu Tsai, clare@setabox.com
6 Greg Haerr, greg@censoft.com
8 This patch is against SDL version 1.2.4.
9 It enhances previous patch 0.8 by providing direct framebuffer
10 access as well as dynamic hardware pixel type support, not
11 requiring a compile-time option setting for different framebuffer
13 Tested against Microwindows version 0.89pre9.
15 Older Microwindows versions
16 ===========================
17 If running on a version older than Microwindows 0.89pre9,
18 the following items might need to be patched in Microwindows.
20 1. Patch src/nanox/client.c::GrClose()
21 It fixes the client side GrClose(). In the original version,
22 GrOpen() can only be called once. When the GrOpen() is called at
23 the second time, the program will terminate. In order to prevent
24 this situation, we need to insert "nxSocket = -1" after
25 "close(nxSocket)" in GrClose(). If you do not have this problem,
26 you may skip this step.
28 2. Patch src/nanox/clientfb.c to return absolute x,y coordinates
29 when using GrGetWindowFBInfo(). Copy the version 0.89pre9
30 of src/nanox/clientfb.c to your system, or configure
31 using --disable-nanox-direct-fb.
37 1. ./configure --disable-video-x11 --disable-video-fbcon \
38 --enable-video-nanox \
39 --with-nanox-pixel-type=[rgb/0888/888/565/555/332/pal]
42 4. make install (as root)
48 --enable-nanox-direct-fb Use direct framebuffer access
49 --enable-nanox-debug Show debug messages
50 --enable-nanox-share-memory Use shared-memory to speed up
52 When running multi-threaded applications using SDL, such
53 as SMPEG, set THREADSAFE=Y in Microwindows' config file,
54 to enable GrXXX() system call critical section support.
56 =============================================
57 Some programs can be used to test this patch.
58 =============================================
60 1. http://www.cs.berkeley.edu/~weimer/atris (a tetris-like game)
61 2. http://www.libsdl.org/projects/newvox/
62 3. http://www.libsdl.org/projects/xflame/
63 4. http://www.libsdl.org/projects/optimum/
64 5. http://www.gnugeneration.com/software/loop/
65 6: http://www.lokigames.com/development/smpeg.php3 (SMPEG version 0.4.4)
71 1. Create hardware surface
72 2. Create YUVOverlay on hardware
75 5. Hide/Change mouse pointer
76 6. Better window movement control with direct fb access
77 7. Palette handling in 8bpp could be improved
83 Many thanks to go to Setabox Co., Ltd. and CML (Communication and
84 Multimedia Laboratory, http://www.cmlab.csie.ntu.edu.tw/) in the
85 Department of Computer Science and Information Engineering of
86 National Taiwan University for supporting this porting project.
88 Century Embedded Technologies (http://embedded.censoft.com)
95 Welcome to give me any suggestion and to report bugs.
96 My e-mail address : clare@setabox.com or niky@cmlab.csie.ntu.edu.tw