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annotate README.QNX @ 666:fbec2501cf9f

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ate: Mon, 4 Aug 2003 19:10:14 +0300 From: "Mike Gorchak" Subject: SDL/QNX forgotten fixes Just found, that one chunk for configure.in has not been applied and one for\ gotten by me :) Please add it to CVS. P.S. Now QNX6.2.1 have the dlopen in libc and in the libltdl. So libc's vari\ ant more prefered, and ltdl rest for compatibility. In this small patch I wa\ s added proper checks.
author Sam Lantinga <slouken@libsdl.org>
date Wed, 06 Aug 2003 20:20:30 +0000
parents 8bedd6d61642
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1 README by Mike Gorchak <mike@malva.ua>, <lestat@i.com.ua>
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2 Last changed at 29 Jul 2003.
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3
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4 =========================================================================
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5 OpenGL:
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6
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7 OpenGL in window mode works well and stable, in fullscreen
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8 mode too, but fullscreen mode has not been heavily tested yet.
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9 If you have QNX RtP version 6.1.0 and above you must download
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10 new Photon3D runtime from http://developers.qnx.com or install it
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11 from public repository or from public CD, available with QNX. The
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12 versions of OS before 6.1.0 are not supported.
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13 While creating OpenGL context software renderer mode is
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14 artificially selected (QSSL made acceleration only for Voodoo
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15 boards in fullscreen mode, sorry but I don't have this board to
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16 test OpenGL - maybe it work or maybe not :)). If you want accele-
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17 ration - you may remove some line in source code: find the file
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18 SDL_ph_video.c and remove the following
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19
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20 OGLAttrib[OGLargc++]=PHOGL_ATTRIB_FORCE_SW;
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21
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22 line in the ph_SetupOpenGLContext() function or change argument
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23 to the PHOGL_ATTRIB_FORCE_HW or PHOGL_ATTRIB_FAVOR_HW.
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24
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25 =========================================================================
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26 Wheel and multibutton mouses:
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27
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28 Photon emitting keyboard events (key up and down) when moved
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29 mouse wheel. But key_scan field appears valid according to flags,
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30 and it contain zero. It is base method of detecting mouse wheel
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31 events under photon. It looks like a hack, but it works for me :)
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32 on different PC configurations.
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33
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34 I'm tested it on:
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35
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36 1. Genius Optical NetScroll/+ (1 wheel)
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37 2. A4Tech Optical GreatEye WheelMouse, model: WOP-35. (2 wheels +
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38 2 additional buttons). Wheel for vertical scrolling works as
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39 usual, but second wheel for horizontal scrolling emitting two
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40 consequented events up or down, so it can provide more fast
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41 scrolling then the first wheel. Additional buttons doesn't
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42 emitting any events, but its look like handled by photon in
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43 unusual way - like click to front, but works not with any win-
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44 dow, looks like bug-o-feature :).
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45
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46 =========================================================================
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47 CDROM handling issues:
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48
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49 Access to CDROM can be provided only with 'root' previleges.
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50 I can't do anything with this fact. /dev/cd0 have the brw-------
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51 flags and root:root rights.
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52
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53 =========================================================================
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54 Video Overlays:
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55
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56 Overlays can flickering during the window movement, resizing,
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57 etc. It happens because photon driver updates the real window
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58 contents behind the overlay, then draws the temporary chroma key
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59 color over window contents. It can be done without the chroma key
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60 using but it cause overlay will be always on top. So flickering
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61 during the movement much better in that case.
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62 Double buffering code temporary disabled in the photon driver
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63 code, beacuse on my GF2-MX it cause accidently buffer switch,
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64 which going to the old frame showing. S3 Savage3D have the same
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65 problem, but ATI Rage 128 has not this problem. I think it can be
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66 fixed later. Current code works very fine, so maybe double buffe-
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67 ring is not needed right now.
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68 Something strange appears when you tried to move window with
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69 overlay beyond the left border of the screen. Overlay trying to
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70 stay at position x=0, but when tried to move it a bit more it
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71 jumps at posituin x=-60. Really strange, looks like overlay
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72 doesn't love the negotive coordinates.
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73
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74 =========================================================================
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75 Shared library building:
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76
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77 Shared library can be built, but before running autogen.sh
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78 script you need manually delete the libtool m4 stuff from
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79 the acinclude.m4 file (it comes after ESD detection code up to
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80 end of the file). Because libtool stuff in the acinclude.m4 file
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81 very old and doesn't know anything about the QNX. Just remove it
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82 and run autogen.sh script.
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83
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84 =========================================================================
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85 Some building issues:
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86
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87 Feel free to not pass --disable-shared option to configure,
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88 if you read comment above about 'Shared library building'. Other-
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89 wise this option is strongly recomended, because the sdl-config
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90 script will be unfunctional.
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91
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92 Run configure script without x11 support, e.g.:
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93
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94 a) for OpenGL support:
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95 ./configure --prefix=/usr/local \
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96 --disable-video-x11 \
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97 --disable-shared
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98
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99 b) without OpenGL support:
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100 ./configure --prefix=/usr/local \
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101 --disable-video-x11 \
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102 --disable-shared \
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103 --disable-video-opengl
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104
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105 In test directory also run ./configure script without x11
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106 support, e.g.:
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108 ./configure --with-sdl-prefix=/usr/local \
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109 --with-sdl-exec-prefix=/usr/local \
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110 --prefix=/usr/local --without-x
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112