Mercurial > sdl-ios-xcode
annotate docs/html/sdlpalette.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_Palette</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_Color" | |
17 HREF="sdlcolor.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_PixelFormat" | |
20 HREF="sdlpixelformat.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="sdlcolor.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="sdlpixelformat.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="SDLPALETTE" | |
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74 ></A |
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75 >SDL_Palette</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN3129" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_Palette -- Color palette for 8-bit pixel formats</DIV | |
84 ><DIV | |
85 CLASS="REFSECT1" | |
86 ><A | |
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87 NAME="AEN3132" |
0 | 88 ></A |
89 ><H2 | |
90 >Structure Definition</H2 | |
91 ><PRE | |
92 CLASS="PROGRAMLISTING" | |
93 >typedef struct{ | |
94 int ncolors; | |
95 SDL_Color *colors; | |
96 } SDL_Palette;</PRE | |
97 ></DIV | |
98 ><DIV | |
99 CLASS="REFSECT1" | |
100 ><A | |
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101 NAME="AEN3135" |
0 | 102 ></A |
103 ><H2 | |
104 >Structure Data</H2 | |
105 ><DIV | |
106 CLASS="INFORMALTABLE" | |
107 ><A | |
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108 NAME="AEN3137" |
0 | 109 ></A |
110 ><P | |
111 ></P | |
112 ><TABLE | |
113 BORDER="0" | |
114 CLASS="CALSTABLE" | |
115 ><TBODY | |
116 ><TR | |
117 ><TD | |
118 ALIGN="LEFT" | |
119 VALIGN="TOP" | |
120 ><TT | |
121 CLASS="STRUCTFIELD" | |
122 ><I | |
123 >ncolors</I | |
124 ></TT | |
125 ></TD | |
126 ><TD | |
127 ALIGN="LEFT" | |
128 VALIGN="TOP" | |
129 >Number of colors used in this palette</TD | |
130 ></TR | |
131 ><TR | |
132 ><TD | |
133 ALIGN="LEFT" | |
134 VALIGN="TOP" | |
135 ><TT | |
136 CLASS="STRUCTFIELD" | |
137 ><I | |
138 >colors</I | |
139 ></TT | |
140 ></TD | |
141 ><TD | |
142 ALIGN="LEFT" | |
143 VALIGN="TOP" | |
144 >Pointer to <A | |
145 HREF="sdlcolor.html" | |
146 ><SPAN | |
147 CLASS="STRUCTNAME" | |
148 >SDL_Color</SPAN | |
149 ></A | |
150 > structures that make up the palette.</TD | |
151 ></TR | |
152 ></TBODY | |
153 ></TABLE | |
154 ><P | |
155 ></P | |
156 ></DIV | |
157 ></DIV | |
158 ><DIV | |
159 CLASS="REFSECT1" | |
160 ><A | |
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161 NAME="AEN3150" |
0 | 162 ></A |
163 ><H2 | |
164 >Description</H2 | |
165 ><P | |
166 >Each pixel in an 8-bit surface is an index into the <TT | |
167 CLASS="STRUCTFIELD" | |
168 ><I | |
169 >colors</I | |
170 ></TT | |
171 > field of the <SPAN | |
172 CLASS="STRUCTNAME" | |
173 >SDL_Palette</SPAN | |
174 > structure store in <A | |
175 HREF="sdlpixelformat.html" | |
176 ><SPAN | |
177 CLASS="STRUCTNAME" | |
178 >SDL_PixelFormat</SPAN | |
179 ></A | |
180 >. A <SPAN | |
181 CLASS="STRUCTNAME" | |
182 >SDL_Palette</SPAN | |
183 > should never need to be created manually. It is automatically created when SDL allocates a <SPAN | |
184 CLASS="STRUCTNAME" | |
185 >SDL_PixelFormat</SPAN | |
186 > for a surface. The colors values of a <A | |
187 HREF="sdlsurface.html" | |
188 ><SPAN | |
189 CLASS="STRUCTNAME" | |
190 >SDL_Surface</SPAN | |
191 ></A | |
192 >s palette can be set with the <A | |
193 HREF="sdlsetcolors.html" | |
194 ><TT | |
195 CLASS="FUNCTION" | |
196 >SDL_SetColors</TT | |
197 ></A | |
198 >.</P | |
199 ></DIV | |
200 ><DIV | |
201 CLASS="REFSECT1" | |
202 ><A | |
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203 NAME="AEN3163" |
0 | 204 ></A |
205 ><H2 | |
206 >See Also</H2 | |
207 ><P | |
208 ><A | |
209 HREF="sdlcolor.html" | |
210 ><SPAN | |
211 CLASS="STRUCTNAME" | |
212 >SDL_Color</SPAN | |
213 ></A | |
214 >, | |
215 <A | |
216 HREF="sdlsurface.html" | |
217 ><SPAN | |
218 CLASS="STRUCTNAME" | |
219 >SDL_Surface</SPAN | |
220 ></A | |
221 >, | |
222 <A | |
223 HREF="sdlsetcolors.html" | |
224 ><TT | |
225 CLASS="FUNCTION" | |
226 >SDL_SetColors</TT | |
227 ></A | |
228 > | |
229 <A | |
230 HREF="sdlsetpalette.html" | |
231 ><TT | |
232 CLASS="FUNCTION" | |
233 >SDL_SetPalette</TT | |
234 ></A | |
235 ></P | |
236 ></DIV | |
237 ><DIV | |
238 CLASS="NAVFOOTER" | |
239 ><HR | |
240 ALIGN="LEFT" | |
241 WIDTH="100%"><TABLE | |
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242 SUMMARY="Footer navigation table" |
0 | 243 WIDTH="100%" |
244 BORDER="0" | |
245 CELLPADDING="0" | |
246 CELLSPACING="0" | |
247 ><TR | |
248 ><TD | |
249 WIDTH="33%" | |
250 ALIGN="left" | |
251 VALIGN="top" | |
252 ><A | |
253 HREF="sdlcolor.html" | |
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254 ACCESSKEY="P" |
0 | 255 >Prev</A |
256 ></TD | |
257 ><TD | |
258 WIDTH="34%" | |
259 ALIGN="center" | |
260 VALIGN="top" | |
261 ><A | |
262 HREF="index.html" | |
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263 ACCESSKEY="H" |
0 | 264 >Home</A |
265 ></TD | |
266 ><TD | |
267 WIDTH="33%" | |
268 ALIGN="right" | |
269 VALIGN="top" | |
270 ><A | |
271 HREF="sdlpixelformat.html" | |
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272 ACCESSKEY="N" |
0 | 273 >Next</A |
274 ></TD | |
275 ></TR | |
276 ><TR | |
277 ><TD | |
278 WIDTH="33%" | |
279 ALIGN="left" | |
280 VALIGN="top" | |
281 >SDL_Color</TD | |
282 ><TD | |
283 WIDTH="34%" | |
284 ALIGN="center" | |
285 VALIGN="top" | |
286 ><A | |
287 HREF="video.html" | |
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288 ACCESSKEY="U" |
0 | 289 >Up</A |
290 ></TD | |
291 ><TD | |
292 WIDTH="33%" | |
293 ALIGN="right" | |
294 VALIGN="top" | |
295 >SDL_PixelFormat</TD | |
296 ></TR | |
297 ></TABLE | |
298 ></DIV | |
299 ></BODY | |
300 ></HTML | |
301 > |