Mercurial > sdl-ios-xcode
annotate docs/html/sdlcondbroadcast.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_CondBroadcast</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_CondSignal" | |
17 HREF="sdlcondsignal.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_CondWait" | |
20 HREF="sdlcondwait.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="sdlcondsignal.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="sdlcondwait.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="SDLCONDBROADCAST" | |
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74 ></A |
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75 >SDL_CondBroadcast</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN8337" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_CondBroadcast -- Restart all threads waiting on a condition variable</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN8340" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN8341" |
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_CondBroadcast</B | |
109 ></CODE | |
110 >(SDL_cond *cond);</CODE | |
111 ></P | |
112 ><P | |
113 ></P | |
114 ></DIV | |
115 ></DIV | |
116 ><DIV | |
117 CLASS="REFSECT1" | |
118 ><A | |
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119 NAME="AEN8347" |
0 | 120 ></A |
121 ><H2 | |
122 >Description</H2 | |
123 ><P | |
124 >Restarts all threads that are waiting on the condition variable, <TT | |
125 CLASS="PARAMETER" | |
126 ><I | |
127 >cond</I | |
128 ></TT | |
129 >. Returns <SPAN | |
130 CLASS="RETURNVALUE" | |
131 >0</SPAN | |
132 > on success, or <SPAN | |
133 CLASS="RETURNVALUE" | |
134 >-1</SPAN | |
135 > on an error.</P | |
136 ></DIV | |
137 ><DIV | |
138 CLASS="REFSECT1" | |
139 ><A | |
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140 NAME="AEN8353" |
0 | 141 ></A |
142 ><H2 | |
143 >See Also</H2 | |
144 ><P | |
145 ><A | |
146 HREF="sdlcondsignal.html" | |
147 ><TT | |
148 CLASS="FUNCTION" | |
149 >SDL_CondSignal</TT | |
150 ></A | |
151 >, | |
152 <A | |
153 HREF="sdlcondwait.html" | |
154 ><TT | |
155 CLASS="FUNCTION" | |
156 >SDL_CondWait</TT | |
157 ></A | |
158 > </P | |
159 ></DIV | |
160 ><DIV | |
161 CLASS="NAVFOOTER" | |
162 ><HR | |
163 ALIGN="LEFT" | |
164 WIDTH="100%"><TABLE | |
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165 SUMMARY="Footer navigation table" |
0 | 166 WIDTH="100%" |
167 BORDER="0" | |
168 CELLPADDING="0" | |
169 CELLSPACING="0" | |
170 ><TR | |
171 ><TD | |
172 WIDTH="33%" | |
173 ALIGN="left" | |
174 VALIGN="top" | |
175 ><A | |
176 HREF="sdlcondsignal.html" | |
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177 ACCESSKEY="P" |
0 | 178 >Prev</A |
179 ></TD | |
180 ><TD | |
181 WIDTH="34%" | |
182 ALIGN="center" | |
183 VALIGN="top" | |
184 ><A | |
185 HREF="index.html" | |
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186 ACCESSKEY="H" |
0 | 187 >Home</A |
188 ></TD | |
189 ><TD | |
190 WIDTH="33%" | |
191 ALIGN="right" | |
192 VALIGN="top" | |
193 ><A | |
194 HREF="sdlcondwait.html" | |
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195 ACCESSKEY="N" |
0 | 196 >Next</A |
197 ></TD | |
198 ></TR | |
199 ><TR | |
200 ><TD | |
201 WIDTH="33%" | |
202 ALIGN="left" | |
203 VALIGN="top" | |
204 >SDL_CondSignal</TD | |
205 ><TD | |
206 WIDTH="34%" | |
207 ALIGN="center" | |
208 VALIGN="top" | |
209 ><A | |
210 HREF="thread.html" | |
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211 ACCESSKEY="U" |
0 | 212 >Up</A |
213 ></TD | |
214 ><TD | |
215 WIDTH="33%" | |
216 ALIGN="right" | |
217 VALIGN="top" | |
218 >SDL_CondWait</TD | |
219 ></TR | |
220 ></TABLE | |
221 ></DIV | |
222 ></BODY | |
223 ></HTML | |
224 > |