Mercurial > sdl-ios-xcode
annotate src/thread/riscos/SDL_systhread.c @ 1192:54aa9aa32327
To: sdl@libsdl.org
From: Christian Walther <cwalther@gmx.ch>
Date: Fri, 18 Nov 2005 23:39:02 +0100
Subject: [SDL] Mouse position bugs on Mac OS X
The attached patch fixes a few bugs in SDL related to the mouse position
in windowed mode on Mac OS X, reproduced using the attached minimal test
program - at least here on 10.3.9, with SDL CVS from today. Could anyone
test whether the bugs exist and are fixed by the patch on 10.2 and 10.4?
1. When using OpenGL, the vertical mouse positions obtained through
events or SDL_GetMouseState() are off by one.
2. When using OpenGL, SDL_WarpMouse() inverts the y coordinate.
3. Clicks on the topmost pixel row of the window are not recognized.
1 and 2 do not occur in non-OpenGL mode, while 3 does. All three only
occur in windowed mode, not in fullscreen.
The cause for 1 and 3 is that in Cocoa, "the location of the mouse"
seems to be defined as "the location of the top left corner of the mouse
pointer's hot pixel" (this is not documented, it's just what I found out
here), which together with the fact that Cocoa's usual y coordinates
start at the bottom and increase upwards means that the y coordinate of
the mouse runs from 1 to h, not from 0 to h-1, in a window of height h.
If it does work on 10.2 and 10.4 (I'll try to test it as soon as I can,
but at the moment all I have at hand is 10.3.9), can this be applied to
the CVS?
-Christian
To: sdl@libsdl.org
From: Christian Walther <cwalther@gmx.ch>
Date: Mon, 28 Nov 2005 10:41:51 +0100
Subject: [SDL] Re: Mouse position bugs on Mac OS X
I wrote:
> I'll try to test it as soon as I can, but at the moment all I have at hand is 10.3.9
So, here are the results of my tests (with patched and unpatched
frameworks compiled with Xcode 1.5 (gcc 3.3) on 10.3.9):
On 10.1.5, my test program doesn't run because of "Undefined symbols:
SDL undefined reference to _CGMainDisplayID expected to be defined in
Carbon". I guess not supporting 10.1 was a deliberate decision then and
that's OK with me.
On 10.2.8, 10.3.9, and 10.4.0, the bugs exist as described in my
original post and are fixed by my patch. That is, there is no difference
between pre/post 10.3 and the patched version works correctly in all
combinations of GL/non-GL and windowed/fullscreen.
I therefore recommend the patch for inclusion.
-Christian
author | Ryan C. Gordon <icculus@icculus.org> |
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date | Mon, 28 Nov 2005 13:58:26 +0000 |
parents | d74fbf56f2f6 |
children | c9b51268668f |
rev | line source |
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1 /* |
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2 SDL - Simple DirectMedia Layer |
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3 Copyright (C) 1997-2004 Sam Lantinga |
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4 |
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5 This library is free software; you can redistribute it and/or |
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6 modify it under the terms of the GNU Library General Public |
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7 License as published by the Free Software Foundation; either |
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8 version 2 of the License, or (at your option) any later version. |
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9 |
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10 This library is distributed in the hope that it will be useful, |
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 Library General Public License for more details. |
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14 |
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15 You should have received a copy of the GNU Library General Public |
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16 License along with this library; if not, write to the Free |
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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18 |
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19 Sam Lantinga |
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20 slouken@libsdl.org |
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21 */ |
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22 |
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23 /* RISC OS version based on pthreads linux source */ |
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24 |
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25 #ifdef SAVE_RCSID |
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26 static char rcsid = |
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27 "@(#) $Id$"; |
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28 #endif |
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29 |
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30 #include "SDL_error.h" |
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31 #include "SDL_thread.h" |
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32 #include "SDL_systhread.h" |
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33 |
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34 #ifdef DISABLE_THREADS |
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35 |
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36 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args) |
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37 { |
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38 SDL_SetError("Threads have not been compiled into this version of the library"); |
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39 return(-1); |
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40 } |
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41 |
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42 void SDL_SYS_SetupThread(void) |
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43 { |
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44 return; |
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45 } |
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46 |
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47 Uint32 SDL_ThreadID(void) |
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48 { |
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49 return(0); |
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50 } |
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51 |
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52 void SDL_SYS_WaitThread(SDL_Thread *thread) |
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53 { |
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54 return; |
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55 } |
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56 |
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57 void SDL_SYS_KillThread(SDL_Thread *thread) |
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58 { |
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59 return; |
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60 } |
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61 |
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62 #else |
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63 |
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64 #include <signal.h> |
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65 |
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66 /* List of signals to mask in the subthreads */ |
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67 static int sig_list[] = { |
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68 SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH, |
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69 SIGVTALRM, SIGPROF, 0 |
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70 }; |
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71 |
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72 #include <pthread.h> |
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73 |
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74 int riscos_using_threads = 0; |
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75 Uint32 riscos_main_thread = 0; /* Thread running events */ |
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76 |
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77 static void *RunThread(void *data) |
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78 { |
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79 SDL_RunThread(data); |
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80 pthread_exit((void*)0); |
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81 return((void *)0); /* Prevent compiler warning */ |
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82 } |
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83 |
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84 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args) |
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85 { |
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86 pthread_attr_t type; |
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87 |
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88 /* Set the thread attributes */ |
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89 if ( pthread_attr_init(&type) != 0 ) { |
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90 SDL_SetError("Couldn't initialize pthread attributes"); |
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91 return(-1); |
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92 } |
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93 pthread_attr_setdetachstate(&type, PTHREAD_CREATE_JOINABLE); |
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94 |
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95 /* Create the thread and go! */ |
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96 if ( pthread_create(&thread->handle, &type, RunThread, args) != 0 ) { |
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97 SDL_SetError("Not enough resources to create thread"); |
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98 return(-1); |
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99 } |
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100 |
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101 if (riscos_using_threads == 0) |
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102 { |
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103 riscos_using_threads = 1; |
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104 riscos_main_thread = SDL_ThreadID(); |
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105 } |
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106 |
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107 return(0); |
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108 } |
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109 |
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110 void SDL_SYS_SetupThread(void) |
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111 { |
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112 int i; |
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113 sigset_t mask; |
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114 |
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115 /* Mask asynchronous signals for this thread */ |
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116 sigemptyset(&mask); |
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117 for ( i=0; sig_list[i]; ++i ) { |
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118 sigaddset(&mask, sig_list[i]); |
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119 } |
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120 pthread_sigmask(SIG_BLOCK, &mask, 0); |
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121 |
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122 #ifdef PTHREAD_CANCEL_ASYNCHRONOUS |
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123 /* Allow ourselves to be asynchronously cancelled */ |
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124 { int oldstate; |
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125 pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldstate); |
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126 } |
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127 #endif |
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128 } |
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129 |
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130 Uint32 SDL_ThreadID(void) |
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131 { |
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132 return((Uint32)pthread_self()); |
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133 } |
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134 |
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135 void SDL_SYS_WaitThread(SDL_Thread *thread) |
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136 { |
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137 pthread_join(thread->handle, 0); |
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138 } |
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139 |
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140 void SDL_SYS_KillThread(SDL_Thread *thread) |
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141 { |
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142 #ifdef PTHREAD_CANCEL_ASYNCHRONOUS |
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143 pthread_cancel(thread->handle); |
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144 #else |
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145 pthread_kill(thread->handle, SIGKILL); |
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146 #endif |
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147 } |
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148 |
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149 #endif |