Mercurial > sdl-ios-xcode
annotate docs/html/sdlgetvideoinfo.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_GetVideoInfo</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="Video" | |
14 HREF="video.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_GetVideoSurface" | |
17 HREF="sdlgetvideosurface.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_VideoDriverName" | |
20 HREF="sdlvideodrivername.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="sdlgetvideosurface.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="sdlvideodrivername.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="SDLGETVIDEOINFO" | |
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74 ></A |
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75 >SDL_GetVideoInfo</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN1100" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_GetVideoInfo -- returns a pointer to information about the video hardware</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN1103" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN1104" |
0 | 95 ></A |
96 ><P | |
97 ></P | |
98 ><PRE | |
99 CLASS="FUNCSYNOPSISINFO" | |
100 >#include "SDL.h"</PRE | |
101 ><P | |
102 ><CODE | |
103 ><CODE | |
104 CLASS="FUNCDEF" | |
105 >SDL_VideoInfo *<B | |
106 CLASS="FSFUNC" | |
107 >SDL_GetVideoInfo</B | |
108 ></CODE | |
109 >(void);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN1110" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >This function returns a read-only pointer to <A | |
124 HREF="sdlvideoinfo.html" | |
125 >information</A | |
126 > about the video | |
127 hardware. If this is called before <A | |
128 HREF="sdlsetvideomode.html" | |
129 >SDL_SetVideoMode</A | |
130 >, the | |
131 <TT | |
132 CLASS="STRUCTFIELD" | |
133 ><I | |
134 >vfmt</I | |
135 ></TT | |
136 > member of the returned structure will contain the | |
137 pixel format of the "best" video mode.</P | |
138 ></DIV | |
139 ><DIV | |
140 CLASS="REFSECT1" | |
141 ><A | |
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142 NAME="AEN1116" |
0 | 143 ></A |
144 ><H2 | |
145 >See Also</H2 | |
146 ><P | |
147 ><A | |
148 HREF="sdlsetvideomode.html" | |
149 ><TT | |
150 CLASS="FUNCTION" | |
151 >SDL_SetVideoMode</TT | |
152 ></A | |
153 >, | |
154 <A | |
155 HREF="sdlvideoinfo.html" | |
156 ><SPAN | |
157 CLASS="STRUCTNAME" | |
158 >SDL_VideoInfo</SPAN | |
159 ></A | |
160 ></P | |
161 ></DIV | |
162 ><DIV | |
163 CLASS="NAVFOOTER" | |
164 ><HR | |
165 ALIGN="LEFT" | |
166 WIDTH="100%"><TABLE | |
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167 SUMMARY="Footer navigation table" |
0 | 168 WIDTH="100%" |
169 BORDER="0" | |
170 CELLPADDING="0" | |
171 CELLSPACING="0" | |
172 ><TR | |
173 ><TD | |
174 WIDTH="33%" | |
175 ALIGN="left" | |
176 VALIGN="top" | |
177 ><A | |
178 HREF="sdlgetvideosurface.html" | |
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179 ACCESSKEY="P" |
0 | 180 >Prev</A |
181 ></TD | |
182 ><TD | |
183 WIDTH="34%" | |
184 ALIGN="center" | |
185 VALIGN="top" | |
186 ><A | |
187 HREF="index.html" | |
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188 ACCESSKEY="H" |
0 | 189 >Home</A |
190 ></TD | |
191 ><TD | |
192 WIDTH="33%" | |
193 ALIGN="right" | |
194 VALIGN="top" | |
195 ><A | |
196 HREF="sdlvideodrivername.html" | |
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197 ACCESSKEY="N" |
0 | 198 >Next</A |
199 ></TD | |
200 ></TR | |
201 ><TR | |
202 ><TD | |
203 WIDTH="33%" | |
204 ALIGN="left" | |
205 VALIGN="top" | |
206 >SDL_GetVideoSurface</TD | |
207 ><TD | |
208 WIDTH="34%" | |
209 ALIGN="center" | |
210 VALIGN="top" | |
211 ><A | |
212 HREF="video.html" | |
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213 ACCESSKEY="U" |
0 | 214 >Up</A |
215 ></TD | |
216 ><TD | |
217 WIDTH="33%" | |
218 ALIGN="right" | |
219 VALIGN="top" | |
220 >SDL_VideoDriverName</TD | |
221 ></TR | |
222 ></TABLE | |
223 ></DIV | |
224 ></BODY | |
225 ></HTML | |
226 > |