Mercurial > sdl-ios-xcode
annotate docs/html/sdlcreateyuvoverlay.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_CreateYUVOverlay</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_GL_SwapBuffers" | |
17 HREF="sdlglswapbuffers.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_LockYUVOverlay" | |
20 HREF="sdllockyuvoverlay.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="sdlglswapbuffers.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="sdllockyuvoverlay.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="SDLCREATEYUVOVERLAY" | |
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74 ></A |
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75 >SDL_CreateYUVOverlay</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN2808" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_CreateYUVOverlay -- Create a YUV video overlay</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN2811" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN2812" |
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_Overlay *<B | |
106 CLASS="FSFUNC" | |
107 >SDL_CreateYUVOverlay</B | |
108 ></CODE | |
109 >(int width, int height, Uint32 format, SDL_Surface *display);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN2818" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 ><TT | |
124 CLASS="FUNCTION" | |
125 >SDL_CreateYUVOverlay</TT | |
126 > creates a YUV overlay of the specified <TT | |
127 CLASS="PARAMETER" | |
128 ><I | |
129 >width</I | |
130 ></TT | |
131 >, <TT | |
132 CLASS="PARAMETER" | |
133 ><I | |
134 >height</I | |
135 ></TT | |
136 > and <TT | |
137 CLASS="PARAMETER" | |
138 ><I | |
139 >format</I | |
140 ></TT | |
141 > (see <A | |
142 HREF="sdloverlay.html" | |
143 ><SPAN | |
144 CLASS="STRUCTNAME" | |
145 >SDL_Overlay</SPAN | |
146 ></A | |
147 > for a list of available formats), for the provided <TT | |
148 CLASS="PARAMETER" | |
149 ><I | |
150 >display</I | |
151 ></TT | |
152 >. A <A | |
153 HREF="sdloverlay.html" | |
154 ><SPAN | |
155 CLASS="STRUCTNAME" | |
156 >SDL_Overlay</SPAN | |
157 ></A | |
158 > structure is returned.</P | |
159 ><P | |
160 >The term 'overlay' is a misnomer since, unless the overlay is created in hardware, the contents for the display surface underneath the area where the overlay is shown will be overwritten when the overlay is displayed.</P | |
161 ></DIV | |
162 ><DIV | |
163 CLASS="REFSECT1" | |
164 ><A | |
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165 NAME="AEN2831" |
0 | 166 ></A |
167 ><H2 | |
168 >See Also</H2 | |
169 ><P | |
170 ><A | |
171 HREF="sdloverlay.html" | |
172 ><SPAN | |
173 CLASS="STRUCTNAME" | |
174 >SDL_Overlay</SPAN | |
175 ></A | |
176 >, | |
177 <A | |
178 HREF="sdldisplayyuvoverlay.html" | |
179 ><TT | |
180 CLASS="FUNCTION" | |
181 >SDL_DisplayYUVOverlay</TT | |
182 ></A | |
183 >, | |
184 <A | |
185 HREF="sdlfreeyuvoverlay.html" | |
186 ><TT | |
187 CLASS="FUNCTION" | |
188 >SDL_FreeYUVOverlay</TT | |
189 ></A | |
190 ></P | |
191 ></DIV | |
192 ><DIV | |
193 CLASS="NAVFOOTER" | |
194 ><HR | |
195 ALIGN="LEFT" | |
196 WIDTH="100%"><TABLE | |
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197 SUMMARY="Footer navigation table" |
0 | 198 WIDTH="100%" |
199 BORDER="0" | |
200 CELLPADDING="0" | |
201 CELLSPACING="0" | |
202 ><TR | |
203 ><TD | |
204 WIDTH="33%" | |
205 ALIGN="left" | |
206 VALIGN="top" | |
207 ><A | |
208 HREF="sdlglswapbuffers.html" | |
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209 ACCESSKEY="P" |
0 | 210 >Prev</A |
211 ></TD | |
212 ><TD | |
213 WIDTH="34%" | |
214 ALIGN="center" | |
215 VALIGN="top" | |
216 ><A | |
217 HREF="index.html" | |
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218 ACCESSKEY="H" |
0 | 219 >Home</A |
220 ></TD | |
221 ><TD | |
222 WIDTH="33%" | |
223 ALIGN="right" | |
224 VALIGN="top" | |
225 ><A | |
226 HREF="sdllockyuvoverlay.html" | |
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227 ACCESSKEY="N" |
0 | 228 >Next</A |
229 ></TD | |
230 ></TR | |
231 ><TR | |
232 ><TD | |
233 WIDTH="33%" | |
234 ALIGN="left" | |
235 VALIGN="top" | |
236 >SDL_GL_SwapBuffers</TD | |
237 ><TD | |
238 WIDTH="34%" | |
239 ALIGN="center" | |
240 VALIGN="top" | |
241 ><A | |
242 HREF="video.html" | |
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243 ACCESSKEY="U" |
0 | 244 >Up</A |
245 ></TD | |
246 ><TD | |
247 WIDTH="33%" | |
248 ALIGN="right" | |
249 VALIGN="top" | |
250 >SDL_LockYUVOverlay</TD | |
251 ></TR | |
252 ></TABLE | |
253 ></DIV | |
254 ></BODY | |
255 ></HTML | |
256 > |