Mercurial > sdl-ios-xcode
annotate docs/html/sdljoystickgethat.html @ 1555:780fd5b61df1
Fixed bug #89
Date: Sun, 23 Oct 2005 16:39:03 +0200
From: "A. Schmid" <sahib@phreaker.net>
Subject: [SDL] no software surfaces with svgalib driver?
Hi,
I noticed that the SDL (1.2.9) svgalib driver only makes use of linear
addressable (framebuffer) video modes. On older systems (like one of
mine), linear addressable modes are often not available.
Especially for cards with VESA VBE < 2.0 the svgalib vesa driver is
unusable, since VESA only supports framebuffering for VBE 2.0 and later.
The changes necessary to add support for software surfaces seem to be
relatively small. I only had to hack src/video/svga/SDL_svgavideo.c (see
attached patch). The code worked fine for me, but it is no more than a
proof of concept and should be reviewed (probably has a memory leak when
switching modes). It also uses the vgagl library (included in the
svgalib package) and needs to be linked against it.
-Alex
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 19 Mar 2006 12:05:16 +0000 |
parents | 355632dca928 |
children |
rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_JoystickGetHat</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="Joystick" | |
14 HREF="joystick.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_JoystickGetAxis" | |
17 HREF="sdljoystickgetaxis.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_JoystickGetButton" | |
20 HREF="sdljoystickgetbutton.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="sdljoystickgetaxis.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="sdljoystickgetbutton.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="SDLJOYSTICKGETHAT" | |
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74 ></A |
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75 >SDL_JoystickGetHat</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN6358" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_JoystickGetHat -- Get the current state of a joystick hat</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN6361" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN6362" |
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 >Uint8 <B | |
106 CLASS="FSFUNC" | |
107 >SDL_JoystickGetHat</B | |
108 ></CODE | |
109 >(SDL_Joystick *joystick, int hat);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN6368" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >SDL_JoystickGetHat returns the current state of the given <TT | |
124 CLASS="PARAMETER" | |
125 ><I | |
126 >hat</I | |
127 ></TT | |
128 > on the given <TT | |
129 CLASS="PARAMETER" | |
130 ><I | |
131 >joystick</I | |
132 ></TT | |
133 >.</P | |
134 ></DIV | |
135 ><DIV | |
136 CLASS="REFSECT1" | |
137 ><A | |
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138 NAME="AEN6373" |
0 | 139 ></A |
140 ><H2 | |
141 >Return Value</H2 | |
142 ><P | |
143 >The current state is returned as a Uint8 which is defined as an OR'd combination of one or more of the following</P | |
144 ><P | |
145 ></P | |
146 ><TABLE | |
147 BORDER="0" | |
148 ><TBODY | |
149 ><TR | |
150 ><TD | |
151 ><TT | |
152 CLASS="LITERAL" | |
153 >SDL_HAT_CENTERED</TT | |
154 ></TD | |
155 ></TR | |
156 ><TR | |
157 ><TD | |
158 ><TT | |
159 CLASS="LITERAL" | |
160 >SDL_HAT_UP</TT | |
161 ></TD | |
162 ></TR | |
163 ><TR | |
164 ><TD | |
165 ><TT | |
166 CLASS="LITERAL" | |
167 >SDL_HAT_RIGHT</TT | |
168 ></TD | |
169 ></TR | |
170 ><TR | |
171 ><TD | |
172 ><TT | |
173 CLASS="LITERAL" | |
174 >SDL_HAT_DOWN</TT | |
175 ></TD | |
176 ></TR | |
177 ><TR | |
178 ><TD | |
179 ><TT | |
180 CLASS="LITERAL" | |
181 >SDL_HAT_LEFT</TT | |
182 ></TD | |
183 ></TR | |
184 ><TR | |
185 ><TD | |
186 ><TT | |
187 CLASS="LITERAL" | |
188 >SDL_HAT_RIGHTUP</TT | |
189 ></TD | |
190 ></TR | |
191 ><TR | |
192 ><TD | |
193 ><TT | |
194 CLASS="LITERAL" | |
195 >SDL_HAT_RIGHTDOWN</TT | |
196 ></TD | |
197 ></TR | |
198 ><TR | |
199 ><TD | |
200 ><TT | |
201 CLASS="LITERAL" | |
202 >SDL_HAT_LEFTUP</TT | |
203 ></TD | |
204 ></TR | |
205 ><TR | |
206 ><TD | |
207 ><TT | |
208 CLASS="LITERAL" | |
209 >SDL_HAT_LEFTDOWN</TT | |
210 ></TD | |
211 ></TR | |
212 ></TBODY | |
213 ></TABLE | |
214 ><P | |
215 ></P | |
216 ></DIV | |
217 ><DIV | |
218 CLASS="REFSECT1" | |
219 ><A | |
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220 NAME="AEN6395" |
0 | 221 ></A |
222 ><H2 | |
223 >See Also</H2 | |
224 ><P | |
225 ><A | |
226 HREF="sdljoysticknumhats.html" | |
227 ><TT | |
228 CLASS="FUNCTION" | |
229 >SDL_JoystickNumHats</TT | |
230 ></A | |
231 ></P | |
232 ></DIV | |
233 ><DIV | |
234 CLASS="NAVFOOTER" | |
235 ><HR | |
236 ALIGN="LEFT" | |
237 WIDTH="100%"><TABLE | |
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238 SUMMARY="Footer navigation table" |
0 | 239 WIDTH="100%" |
240 BORDER="0" | |
241 CELLPADDING="0" | |
242 CELLSPACING="0" | |
243 ><TR | |
244 ><TD | |
245 WIDTH="33%" | |
246 ALIGN="left" | |
247 VALIGN="top" | |
248 ><A | |
249 HREF="sdljoystickgetaxis.html" | |
803
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parents:
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250 ACCESSKEY="P" |
0 | 251 >Prev</A |
252 ></TD | |
253 ><TD | |
254 WIDTH="34%" | |
255 ALIGN="center" | |
256 VALIGN="top" | |
257 ><A | |
258 HREF="index.html" | |
803
355632dca928
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parents:
181
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259 ACCESSKEY="H" |
0 | 260 >Home</A |
261 ></TD | |
262 ><TD | |
263 WIDTH="33%" | |
264 ALIGN="right" | |
265 VALIGN="top" | |
266 ><A | |
267 HREF="sdljoystickgetbutton.html" | |
803
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parents:
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268 ACCESSKEY="N" |
0 | 269 >Next</A |
270 ></TD | |
271 ></TR | |
272 ><TR | |
273 ><TD | |
274 WIDTH="33%" | |
275 ALIGN="left" | |
276 VALIGN="top" | |
277 >SDL_JoystickGetAxis</TD | |
278 ><TD | |
279 WIDTH="34%" | |
280 ALIGN="center" | |
281 VALIGN="top" | |
282 ><A | |
283 HREF="joystick.html" | |
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284 ACCESSKEY="U" |
0 | 285 >Up</A |
286 ></TD | |
287 ><TD | |
288 WIDTH="33%" | |
289 ALIGN="right" | |
290 VALIGN="top" | |
291 >SDL_JoystickGetButton</TD | |
292 ></TR | |
293 ></TABLE | |
294 ></DIV | |
295 ></BODY | |
296 ></HTML | |
297 > |