Mercurial > sdl-ios-xcode
annotate docs/html/sdlmutexp.html @ 821:30168104389f
Date: Sat, 14 Feb 2004 14:52:40 +0200
From: "Mike Gorchak"
Subject: Batch of the QNX6 fixes for the SDL
1. Updated readme.QNX
2. Fixed crashes during intensive window updating under fast machines (got over 200 rectangles for update).
3. Fixed double-buffered fullscreen modes, now it works as needed.
4. Fixed Photon detection algorithm.
5. Fixed HWSURFACE update function.
6. Added SDL_PHOTON_FULLSCREEN_REFRESH environment variable support for control refresh rates under Photon.
7. Added 640x400 fullscreen mode emulation via 640x480 (if videodriver not supports original 640x400 mode of course) shifted by 40 vertical pixels from begin, to center it. It's needed for some old DOS games which ran in doubled 320x200 mode.
8. Added available video ram amount support.
8. Added hardware surface allocation/deallocation support if current videomode and videodriver supports it.
9. Added hardware filling support.
10. Added hardware blits support (simple and colorkeyed).
And I've added to testvidinfo test color-keyed blits benchmark (maybe need to add alpha blits benchmark too ?). Currently Photon not supporting any alpha hardware blittings (all drivers lack of alpha blitting code support, only software alpha blitting exist in photon, which is hundreds times slowest than the SDL's one). So I've not added the alpha support. I suppose new QNX 6.3 will have the hardware alpha support, so when it will be done, I'll add alpha support.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sat, 14 Feb 2004 20:22:21 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_mutexP</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
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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_DestroyMutex" | |
17 HREF="sdldestroymutex.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_mutexV" | |
20 HREF="sdlmutexv.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 | |
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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="sdldestroymutex.html" | |
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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="sdlmutexv.html" | |
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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="SDLMUTEXP" | |
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74 ></A |
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75 >SDL_mutexP</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN7872" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_mutexP -- Lock a mutex</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN7875" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN7876" |
0 | 95 ></A |
96 ><P | |
97 ></P | |
98 ><PRE | |
99 CLASS="FUNCSYNOPSISINFO" | |
100 >#include "SDL.h" | |
101 #include "SDL_thread.h"</PRE | |
102 ><P | |
103 ><CODE | |
104 ><CODE | |
105 CLASS="FUNCDEF" | |
106 >int <B | |
107 CLASS="FSFUNC" | |
108 >SDL_mutexP</B | |
109 ></CODE | |
110 >(SDL_mutex *mutex);</CODE | |
111 ></P | |
112 ><P | |
113 ></P | |
114 ></DIV | |
115 ></DIV | |
116 ><DIV | |
117 CLASS="REFSECT1" | |
118 ><A | |
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119 NAME="AEN7882" |
0 | 120 ></A |
121 ><H2 | |
122 >Description</H2 | |
123 ><P | |
124 >Locks the <TT | |
125 CLASS="PARAMETER" | |
126 ><I | |
127 >mutex</I | |
128 ></TT | |
129 >, which was previously created with <A | |
130 HREF="sdlcreatemutex.html" | |
131 ><TT | |
132 CLASS="FUNCTION" | |
133 >SDL_CreateMutex</TT | |
134 ></A | |
135 >. If the mutex is already locked then <TT | |
136 CLASS="FUNCTION" | |
137 >SDL_mutexP</TT | |
138 > will not return until it is <A | |
139 HREF="sdlmutexv.html" | |
140 >unlocked</A | |
141 >. Returns <SPAN | |
142 CLASS="RETURNVALUE" | |
143 >0</SPAN | |
144 > on success, or <SPAN | |
145 CLASS="RETURNVALUE" | |
146 >-1</SPAN | |
147 > on an error.</P | |
148 ><P | |
149 >SDL also defines a macro <TT | |
150 CLASS="LITERAL" | |
151 >#define SDL_LockMutex(m) SDL_mutexP(m)</TT | |
152 >.</P | |
153 ></DIV | |
154 ><DIV | |
155 CLASS="REFSECT1" | |
156 ><A | |
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157 NAME="AEN7894" |
0 | 158 ></A |
159 ><H2 | |
160 >See Also</H2 | |
161 ><P | |
162 ><A | |
163 HREF="sdlcreatemutex.html" | |
164 ><TT | |
165 CLASS="FUNCTION" | |
166 >SDL_CreateMutex</TT | |
167 ></A | |
168 >, | |
169 <A | |
170 HREF="sdlmutexv.html" | |
171 ><TT | |
172 CLASS="FUNCTION" | |
173 >SDL_mutexV</TT | |
174 ></A | |
175 ></P | |
176 ></DIV | |
177 ><DIV | |
178 CLASS="NAVFOOTER" | |
179 ><HR | |
180 ALIGN="LEFT" | |
181 WIDTH="100%"><TABLE | |
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182 SUMMARY="Footer navigation table" |
0 | 183 WIDTH="100%" |
184 BORDER="0" | |
185 CELLPADDING="0" | |
186 CELLSPACING="0" | |
187 ><TR | |
188 ><TD | |
189 WIDTH="33%" | |
190 ALIGN="left" | |
191 VALIGN="top" | |
192 ><A | |
193 HREF="sdldestroymutex.html" | |
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194 ACCESSKEY="P" |
0 | 195 >Prev</A |
196 ></TD | |
197 ><TD | |
198 WIDTH="34%" | |
199 ALIGN="center" | |
200 VALIGN="top" | |
201 ><A | |
202 HREF="index.html" | |
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203 ACCESSKEY="H" |
0 | 204 >Home</A |
205 ></TD | |
206 ><TD | |
207 WIDTH="33%" | |
208 ALIGN="right" | |
209 VALIGN="top" | |
210 ><A | |
211 HREF="sdlmutexv.html" | |
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212 ACCESSKEY="N" |
0 | 213 >Next</A |
214 ></TD | |
215 ></TR | |
216 ><TR | |
217 ><TD | |
218 WIDTH="33%" | |
219 ALIGN="left" | |
220 VALIGN="top" | |
221 >SDL_DestroyMutex</TD | |
222 ><TD | |
223 WIDTH="34%" | |
224 ALIGN="center" | |
225 VALIGN="top" | |
226 ><A | |
227 HREF="thread.html" | |
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228 ACCESSKEY="U" |
0 | 229 >Up</A |
230 ></TD | |
231 ><TD | |
232 WIDTH="33%" | |
233 ALIGN="right" | |
234 VALIGN="top" | |
235 >SDL_mutexV</TD | |
236 ></TR | |
237 ></TABLE | |
238 ></DIV | |
239 ></BODY | |
240 ></HTML | |
241 > |