Mercurial > sdl-ios-xcode
annotate docs/html/sdlcondwaittimeout.html @ 1295:c3e36ac8a94c
Date: Sun, 6 Mar 2005 17:06:20 +0100
From: Per Inge Mathisen
Subject: [SDL] Fullscreen refresh on win32
Windows has a terrible default for fullscreen 3D apps of 60mhz refresh
rate. This can be fixed by the user by going into his driver's
control panel and forcing the refresh rate higher. However, this not a
very user friendly way about it, and in any case SDL contains no code
that could figure out this that condition has afflicted the user.
So the question is, could SDL fix this for the user? It is possible
under Windows to request a higher refresh rate. The danger is of
course that if the user has an old monitor, and you request a too high
refresh rate, the monitor could be damaged. However, I believe there
might be a way around that: Check before switching what refresh rate
the user's desktop runs in, and if our fullscreen dimensions are equal
or less than those of the desktop, use the higher refresh rate of 60
and the desktop rate.
Since most users run their desktops in the same or higher resolution
something sane, this should fix this problem for most users.
Thoughts?
An alternative is to add an SDL_GL_GetAttribute(SDL_GL_REFRESH_RATE)
option so that programs can bitch at their users at their own
convenience.
- Per
author | Sam Lantinga <slouken@libsdl.org> |
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date | Mon, 30 Jan 2006 06:56:10 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_CondWaitTimeout</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_CondWait" | |
17 HREF="sdlcondwait.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="Time" | |
20 HREF="time.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="sdlcondwait.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="time.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="SDLCONDWAITTIMEOUT" | |
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74 ></A |
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75 >SDL_CondWaitTimeout</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN8393" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_CondWaitTimeout -- Wait on a condition variable, with timeout</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN8396" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN8397" |
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_CondWaitTimeout</B | |
109 ></CODE | |
110 >(SDL_cond *cond, SDL_mutex *mutex, Uint32 ms);</CODE | |
111 ></P | |
112 ><P | |
113 ></P | |
114 ></DIV | |
115 ></DIV | |
116 ><DIV | |
117 CLASS="REFSECT1" | |
118 ><A | |
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119 NAME="AEN8403" |
0 | 120 ></A |
121 ><H2 | |
122 >Description</H2 | |
123 ><P | |
124 >Wait on the condition variable <TT | |
125 CLASS="PARAMETER" | |
126 ><I | |
127 >cond</I | |
128 ></TT | |
129 > for, at most, <TT | |
130 CLASS="PARAMETER" | |
131 ><I | |
132 >ms</I | |
133 ></TT | |
134 > milliseconds. <TT | |
135 CLASS="PARAMETER" | |
136 ><I | |
137 >mut</I | |
138 ></TT | |
139 > is unlocked so it must be locked when the function is called. Returns <TT | |
140 CLASS="LITERAL" | |
141 >SDL_MUTEX_TIMEDOUT</TT | |
142 > if the condition is not signalled in the allotted time, <SPAN | |
143 CLASS="RETURNVALUE" | |
144 >0</SPAN | |
145 > if it was signalled or <SPAN | |
146 CLASS="RETURNVALUE" | |
147 >-1</SPAN | |
148 > on an error.</P | |
149 ></DIV | |
150 ><DIV | |
151 CLASS="REFSECT1" | |
152 ><A | |
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153 NAME="AEN8412" |
0 | 154 ></A |
155 ><H2 | |
156 >See Also</H2 | |
157 ><P | |
158 ><A | |
159 HREF="sdlcondwait.html" | |
160 ><TT | |
161 CLASS="FUNCTION" | |
162 >SDL_CondWait</TT | |
163 ></A | |
164 ></P | |
165 ></DIV | |
166 ><DIV | |
167 CLASS="NAVFOOTER" | |
168 ><HR | |
169 ALIGN="LEFT" | |
170 WIDTH="100%"><TABLE | |
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171 SUMMARY="Footer navigation table" |
0 | 172 WIDTH="100%" |
173 BORDER="0" | |
174 CELLPADDING="0" | |
175 CELLSPACING="0" | |
176 ><TR | |
177 ><TD | |
178 WIDTH="33%" | |
179 ALIGN="left" | |
180 VALIGN="top" | |
181 ><A | |
182 HREF="sdlcondwait.html" | |
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183 ACCESSKEY="P" |
0 | 184 >Prev</A |
185 ></TD | |
186 ><TD | |
187 WIDTH="34%" | |
188 ALIGN="center" | |
189 VALIGN="top" | |
190 ><A | |
191 HREF="index.html" | |
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192 ACCESSKEY="H" |
0 | 193 >Home</A |
194 ></TD | |
195 ><TD | |
196 WIDTH="33%" | |
197 ALIGN="right" | |
198 VALIGN="top" | |
199 ><A | |
200 HREF="time.html" | |
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201 ACCESSKEY="N" |
0 | 202 >Next</A |
203 ></TD | |
204 ></TR | |
205 ><TR | |
206 ><TD | |
207 WIDTH="33%" | |
208 ALIGN="left" | |
209 VALIGN="top" | |
210 >SDL_CondWait</TD | |
211 ><TD | |
212 WIDTH="34%" | |
213 ALIGN="center" | |
214 VALIGN="top" | |
215 ><A | |
216 HREF="thread.html" | |
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217 ACCESSKEY="U" |
0 | 218 >Up</A |
219 ></TD | |
220 ><TD | |
221 WIDTH="33%" | |
222 ALIGN="right" | |
223 VALIGN="top" | |
224 >Time</TD | |
225 ></TR | |
226 ></TABLE | |
227 ></DIV | |
228 ></BODY | |
229 ></HTML | |
230 > |