Mercurial > sdl-ios-xcode
annotate docs/html/sdldestroysemaphore.html @ 983:7f08bd66f1ca
Date: Fri, 19 Nov 2004 06:23:53 -0800 (PST)
From: Eric Wing
Subject: OS X Mouse inversion problem fix (again)
Here's yet another patch for the OS X mouse inversion
problem. This should fix the problem once and for all.
I know I've said this before, but *This time for
sure!* :)
If you recall, my last patch broke the non-OpenGL
windowed code and caused the inversion to occur there
instead. Max submitted a patch that partially reverted
the changes back which included the os version hack
which is currently the most recent CVS.
Aaron Sullivan identified and reported to the mailing
list the other day, that the last partial regression
of the code broke OS X 10.2. Looking over the results,
I'm thinking that I was slightly more successful than
I thought at unifying the code. I think I was trying
to unify the code base for OpenGL and non-OpenGL
windowed modes for all versions of the OS. It looks
like I failed at at unifying the OpenGL and non-OpenGL
code, but I did succeed at unifying the OS versions.
Thus, we no longer need the hack for the OS version
checks. The partial regression still included an OS
check which is what broke things for < 10.3.
Attached is the patch for SDL_QuartzWM.m. It basically
is a half-line change that removes one of the two
checks that decides if the mouse coordinates need to
be inverted, i.e:
if (system_version >= 0x1030 &&
(SDL_VideoSurface->flags & SDL_OPENGL) )
becomes this:
if(SDL_VideoSurface->flags & SDL_OPENGL)
With Aaron's outstanding help, we have collectively
tested:
windowed OpenGL
windowed non-OpenGL
fullscreen OpenGL
fullscreen non-OpenGL
under OS X 10.2 (Jaguar), 10.3 (Panther), and 10.4
(Tiger).
We don't have access to 10.0 or 10.1, but since the
original problem didn't materialize until 10.3, I'm
hopeful that testing 10.2 is sufficient. And now that
the code is uniform, I'm also hoping we'll be safe
moving forward to deal with future revisions of the OS
with this issue.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 21 Nov 2004 00:57:47 +0000 |
parents | 355632dca928 |
children |
rev | line source |
---|---|
0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_DestroySemaphore</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ |
0 | 8 "><LINK |
9 REL="HOME" | |
10 TITLE="SDL Library Documentation" | |
11 HREF="index.html"><LINK | |
12 REL="UP" | |
13 TITLE="Multi-threaded Programming" | |
14 HREF="thread.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_CreateSemaphore" | |
17 HREF="sdlcreatesemaphore.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_SemWait" | |
20 HREF="sdlsemwait.html"></HEAD | |
21 ><BODY | |
22 CLASS="REFENTRY" | |
23 BGCOLOR="#FFF8DC" | |
24 TEXT="#000000" | |
25 LINK="#0000ee" | |
26 VLINK="#551a8b" | |
27 ALINK="#ff0000" | |
28 ><DIV | |
29 CLASS="NAVHEADER" | |
30 ><TABLE | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
31 SUMMARY="Header navigation table" |
0 | 32 WIDTH="100%" |
33 BORDER="0" | |
34 CELLPADDING="0" | |
35 CELLSPACING="0" | |
36 ><TR | |
37 ><TH | |
38 COLSPAN="3" | |
39 ALIGN="center" | |
40 >SDL Library Documentation</TH | |
41 ></TR | |
42 ><TR | |
43 ><TD | |
44 WIDTH="10%" | |
45 ALIGN="left" | |
46 VALIGN="bottom" | |
47 ><A | |
48 HREF="sdlcreatesemaphore.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
49 ACCESSKEY="P" |
0 | 50 >Prev</A |
51 ></TD | |
52 ><TD | |
53 WIDTH="80%" | |
54 ALIGN="center" | |
55 VALIGN="bottom" | |
56 ></TD | |
57 ><TD | |
58 WIDTH="10%" | |
59 ALIGN="right" | |
60 VALIGN="bottom" | |
61 ><A | |
62 HREF="sdlsemwait.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
63 ACCESSKEY="N" |
0 | 64 >Next</A |
65 ></TD | |
66 ></TR | |
67 ></TABLE | |
68 ><HR | |
69 ALIGN="LEFT" | |
70 WIDTH="100%"></DIV | |
71 ><H1 | |
72 ><A | |
73 NAME="SDLDESTROYSEMAPHORE" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
74 ></A |
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
75 >SDL_DestroySemaphore</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
79 NAME="AEN7982" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_DestroySemaphore -- Destroys a semaphore that was created by <A | |
84 HREF="sdlcreatesemaphore.html" | |
85 >SDL_CreateSemaphore</A | |
86 >.</DIV | |
87 ><DIV | |
88 CLASS="REFSYNOPSISDIV" | |
89 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
90 NAME="AEN7986" |
0 | 91 ></A |
92 ><H2 | |
93 >Synopsis</H2 | |
94 ><DIV | |
95 CLASS="FUNCSYNOPSIS" | |
96 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
97 NAME="AEN7987" |
0 | 98 ></A |
99 ><P | |
100 ></P | |
101 ><PRE | |
102 CLASS="FUNCSYNOPSISINFO" | |
103 >#include "SDL.h" | |
104 #include "SDL_thread.h"</PRE | |
105 ><P | |
106 ><CODE | |
107 ><CODE | |
108 CLASS="FUNCDEF" | |
109 >void <B | |
110 CLASS="FSFUNC" | |
111 >SDL_DestroySemaphore</B | |
112 ></CODE | |
113 >(SDL_sem *sem);</CODE | |
114 ></P | |
115 ><P | |
116 ></P | |
117 ></DIV | |
118 ></DIV | |
119 ><DIV | |
120 CLASS="REFSECT1" | |
121 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
122 NAME="AEN7993" |
0 | 123 ></A |
124 ><H2 | |
125 >Description</H2 | |
126 ><P | |
127 ><TT | |
128 CLASS="FUNCTION" | |
129 >SDL_DestroySemaphore</TT | |
130 > destroys the semaphore pointed to | |
131 by <TT | |
132 CLASS="PARAMETER" | |
133 ><I | |
134 >sem</I | |
135 ></TT | |
136 > that was created by | |
137 <A | |
138 HREF="sdlcreatesemaphore.html" | |
139 ><TT | |
140 CLASS="FUNCTION" | |
141 >SDL_CreateSemaphore</TT | |
142 ></A | |
143 >. | |
144 It is not safe to destroy a semaphore if there are threads currently blocked | |
145 waiting on it.</P | |
146 ></DIV | |
147 ><DIV | |
148 CLASS="REFSECT1" | |
149 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
150 NAME="AEN8000" |
0 | 151 ></A |
152 ><H2 | |
153 >Examples</H2 | |
154 ><P | |
155 ><PRE | |
156 CLASS="PROGRAMLISTING" | |
157 >if (my_sem != NULL) { | |
158 SDL_DestroySemaphore(my_sem); | |
159 my_sem = NULL; | |
160 }</PRE | |
161 ></P | |
162 ></DIV | |
163 ><DIV | |
164 CLASS="REFSECT1" | |
165 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
166 NAME="AEN8004" |
0 | 167 ></A |
168 ><H2 | |
169 >See Also</H2 | |
170 ><P | |
171 ><A | |
172 HREF="sdlcreatesemaphore.html" | |
173 ><TT | |
174 CLASS="FUNCTION" | |
175 >SDL_CreateSemaphore</TT | |
176 ></A | |
177 >, | |
178 <A | |
179 HREF="sdlsemwait.html" | |
180 ><TT | |
181 CLASS="FUNCTION" | |
182 >SDL_SemWait</TT | |
183 ></A | |
184 >, | |
185 <A | |
186 HREF="sdlsemtrywait.html" | |
187 ><TT | |
188 CLASS="FUNCTION" | |
189 >SDL_SemTryWait</TT | |
190 ></A | |
191 >, | |
192 <A | |
193 HREF="sdlsemwaittimeout.html" | |
194 ><TT | |
195 CLASS="FUNCTION" | |
196 >SDL_SemWaitTimeout</TT | |
197 ></A | |
198 >, | |
199 <A | |
200 HREF="sdlsempost.html" | |
201 ><TT | |
202 CLASS="FUNCTION" | |
203 >SDL_SemPost</TT | |
204 ></A | |
205 >, | |
206 <A | |
207 HREF="sdlsemvalue.html" | |
208 ><TT | |
209 CLASS="FUNCTION" | |
210 >SDL_SemValue</TT | |
211 ></A | |
212 ></P | |
213 ></DIV | |
214 ><DIV | |
215 CLASS="NAVFOOTER" | |
216 ><HR | |
217 ALIGN="LEFT" | |
218 WIDTH="100%"><TABLE | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
219 SUMMARY="Footer navigation table" |
0 | 220 WIDTH="100%" |
221 BORDER="0" | |
222 CELLPADDING="0" | |
223 CELLSPACING="0" | |
224 ><TR | |
225 ><TD | |
226 WIDTH="33%" | |
227 ALIGN="left" | |
228 VALIGN="top" | |
229 ><A | |
230 HREF="sdlcreatesemaphore.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
231 ACCESSKEY="P" |
0 | 232 >Prev</A |
233 ></TD | |
234 ><TD | |
235 WIDTH="34%" | |
236 ALIGN="center" | |
237 VALIGN="top" | |
238 ><A | |
239 HREF="index.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
240 ACCESSKEY="H" |
0 | 241 >Home</A |
242 ></TD | |
243 ><TD | |
244 WIDTH="33%" | |
245 ALIGN="right" | |
246 VALIGN="top" | |
247 ><A | |
248 HREF="sdlsemwait.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
249 ACCESSKEY="N" |
0 | 250 >Next</A |
251 ></TD | |
252 ></TR | |
253 ><TR | |
254 ><TD | |
255 WIDTH="33%" | |
256 ALIGN="left" | |
257 VALIGN="top" | |
258 >SDL_CreateSemaphore</TD | |
259 ><TD | |
260 WIDTH="34%" | |
261 ALIGN="center" | |
262 VALIGN="top" | |
263 ><A | |
264 HREF="thread.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
265 ACCESSKEY="U" |
0 | 266 >Up</A |
267 ></TD | |
268 ><TD | |
269 WIDTH="33%" | |
270 ALIGN="right" | |
271 VALIGN="top" | |
272 >SDL_SemWait</TD | |
273 ></TR | |
274 ></TABLE | |
275 ></DIV | |
276 ></BODY | |
277 ></HTML | |
278 > |