Mercurial > sdl-ios-xcode
annotate README.NanoX @ 1166:da33b7e6d181
Date: Tue, 1 Nov 2005 20:25:10 +0100
From: Dirk Mueller
Subject: [PATCH] build SDL with nonexecutable stack
libSDL is by default marked with an executable stack, which it doesn't
actually need. the reason for this is that there are assembler files in the
source tree not properly annotated with the "noexec stack" section. As such
the linker does a safe-fallback and marks the whole lib as "requires
executable stack".
the patch below removes this by adding annotations. As far as I can see it
shouldn't break anything.
| author | Sam Lantinga <slouken@libsdl.org> |
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| date | Tue, 01 Nov 2005 23:19:59 +0000 |
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1 ================================================================= |
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2 Patch version 0.9 of SDL(Simple DirectMedia Layer) for Nano-X API |
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3 ================================================================= |
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4 |
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5 Authors: Hsieh-Fu Tsai, clare@setabox.com |
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6 Greg Haerr, greg@censoft.com |
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7 |
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8 This patch is against SDL version 1.2.4. |
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9 It enhances previous patch 0.8 by providing direct framebuffer |
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10 access as well as dynamic hardware pixel type support, not |
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11 requiring a compile-time option setting for different framebuffer |
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12 modes. |
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13 Tested against Microwindows version 0.89pre9. |
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14 |
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15 Older Microwindows versions |
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16 =========================== |
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17 If running on a version older than Microwindows 0.89pre9, |
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18 the following items might need to be patched in Microwindows. |
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19 |
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20 1. Patch src/nanox/client.c::GrClose() |
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21 It fixes the client side GrClose(). In the original version, |
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22 GrOpen() can only be called once. When the GrOpen() is called at |
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23 the second time, the program will terminate. In order to prevent |
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24 this situation, we need to insert "nxSocket = -1" after |
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25 "close(nxSocket)" in GrClose(). If you do not have this problem, |
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26 you may skip this step. |
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27 |
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28 2. Patch src/nanox/clientfb.c to return absolute x,y coordinates |
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29 when using GrGetWindowFBInfo(). Copy the version 0.89pre9 |
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30 of src/nanox/clientfb.c to your system, or configure |
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31 using --disable-nanox-direct-fb. |
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32 |
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33 ============= |
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34 Quick Install |
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35 ============= |
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36 |
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37 1. ./configure --disable-video-x11 --disable-video-fbcon \ |
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38 --enable-video-nanox \ |
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39 --with-nanox-pixel-type=[rgb/0888/888/565/555/332/pal] |
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40 2. make clean |
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41 3. make |
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42 4. make install (as root) |
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43 |
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44 ============ |
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45 Nitty-gritty |
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46 ============ |
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47 |
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48 --enable-nanox-direct-fb Use direct framebuffer access |
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49 --enable-nanox-debug Show debug messages |
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50 --enable-nanox-share-memory Use shared-memory to speed up |
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51 |
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52 When running multi-threaded applications using SDL, such |
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53 as SMPEG, set THREADSAFE=Y in Microwindows' config file, |
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54 to enable GrXXX() system call critical section support. |
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55 |
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56 ============================================= |
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57 Some programs can be used to test this patch. |
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58 ============================================= |
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59 |
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60 1. http://www.cs.berkeley.edu/~weimer/atris (a tetris-like game) |
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61 2. http://www.libsdl.org/projects/newvox/ |
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62 3. http://www.libsdl.org/projects/xflame/ |
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63 4. http://www.libsdl.org/projects/optimum/ |
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64 5. http://www.gnugeneration.com/software/loop/ |
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65 6: http://www.lokigames.com/development/smpeg.php3 (SMPEG version 0.4.4) |
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66 |
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67 ========= |
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68 Todo List |
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69 ========= |
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70 |
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71 1. Create hardware surface |
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72 2. Create YUVOverlay on hardware |
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73 3. Use OpenGL |
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74 4. Gamma correction |
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75 5. Hide/Change mouse pointer |
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76 6. Better window movement control with direct fb access |
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77 7. Palette handling in 8bpp could be improved |
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78 |
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79 ===================== |
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80 Supporting Institutes |
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81 ===================== |
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82 |
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83 Many thanks to go to Setabox Co., Ltd. and CML (Communication and |
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84 Multimedia Laboratory, http://www.cmlab.csie.ntu.edu.tw/) in the |
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85 Department of Computer Science and Information Engineering of |
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86 National Taiwan University for supporting this porting project. |
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87 |
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88 Century Embedded Technologies (http://embedded.censoft.com) |
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89 for this patch. |
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90 |
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91 =================== |
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92 Contact Information |
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93 =================== |
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94 |
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95 Welcome to give me any suggestion and to report bugs. |
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96 My e-mail address : clare@setabox.com or niky@cmlab.csie.ntu.edu.tw |
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97 or greg@censoft.com |