Mercurial > sdl-ios-xcode
annotate docs/html/sdlpumpevents.html @ 3335:b8d313de8a65
Adam Strzelecki to SDL
Since current DirectFB implementation is incomplete for YUV surfaces (actually causes segmentation faults when trying Lock and use YUV planar textures) I decided to fix it a bit.
Here's a patch that should make DirectFB properly support YUV both packed and planar (3 planes).
(1) Removed SDL_BYTESPERPIXEL at all in favor of DFB_BYTES_PER_PIXEL(SDLToDFBPixelFormat(fmt)) which does return always proper BPP for YUVs too, coz SDL_BYTESPERPIXEL returns incorrect values for FOURCCs
(2) Fixed data->pixels allocation for planar YUVs in CreateTexture, it should allocate 150% more space
(3) Copy other planes for planar YUVs in UpdateTexture
(4) Moved checking if format is supported at all with DirectFB on CreateTexture at the beginning of the code
Waiting for comments,
--
Adam Strzelecki | nanoant.com
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 04 Oct 2009 04:03:37 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_PumpEvents</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="Event Functions." | |
14 HREF="eventfunctions.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="Event Functions." | |
17 HREF="eventfunctions.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_PeepEvents" | |
20 HREF="sdlpeepevents.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="eventfunctions.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="sdlpeepevents.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="SDLPUMPEVENTS" | |
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74 ></A |
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75 >SDL_PumpEvents</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN5387" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_PumpEvents -- Pumps the event loop, gathering events from the input devices.</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN5390" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN5391" |
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 >void <B | |
106 CLASS="FSFUNC" | |
107 >SDL_PumpEvents</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="AEN5397" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Pumps the event loop, gathering events from the input devices.</P | |
124 ><P | |
125 ><TT | |
126 CLASS="FUNCTION" | |
127 >SDL_PumpEvents</TT | |
128 > gathers all the pending input information from devices and places it on the event queue. Without calls to <TT | |
129 CLASS="FUNCTION" | |
130 >SDL_PumpEvents</TT | |
131 > no events would ever be placed on the queue. Often calls the need for <TT | |
132 CLASS="FUNCTION" | |
133 >SDL_PumpEvents</TT | |
134 > is hidden from the user since <A | |
135 HREF="sdlpollevent.html" | |
136 ><TT | |
137 CLASS="FUNCTION" | |
138 >SDL_PollEvent</TT | |
139 ></A | |
140 > and <A | |
141 HREF="sdlwaitevent.html" | |
142 ><TT | |
143 CLASS="FUNCTION" | |
144 >SDL_WaitEvent</TT | |
145 ></A | |
146 > implicitly call <TT | |
147 CLASS="FUNCTION" | |
148 >SDL_PumpEvents</TT | |
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149 >. However, if you are not polling or waiting for events (e.g. you are filtering them), then you must call <TT |
0 | 150 CLASS="FUNCTION" |
151 >SDL_PumpEvents</TT | |
152 > to force an event queue update.</P | |
153 ><DIV | |
154 CLASS="NOTE" | |
155 ><BLOCKQUOTE | |
156 CLASS="NOTE" | |
157 ><P | |
158 ><B | |
159 >Note: </B | |
160 >You can only call this function in the thread that set the video mode.</P | |
161 ></BLOCKQUOTE | |
162 ></DIV | |
163 ></DIV | |
164 ><DIV | |
165 CLASS="REFSECT1" | |
166 ><A | |
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167 NAME="AEN5412" |
0 | 168 ></A |
169 ><H2 | |
170 >See Also</H2 | |
171 ><P | |
172 ><A | |
173 HREF="sdlpollevent.html" | |
174 ><TT | |
175 CLASS="FUNCTION" | |
176 >SDL_PollEvent</TT | |
177 ></A | |
178 ></P | |
179 ></DIV | |
180 ><DIV | |
181 CLASS="NAVFOOTER" | |
182 ><HR | |
183 ALIGN="LEFT" | |
184 WIDTH="100%"><TABLE | |
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185 SUMMARY="Footer navigation table" |
0 | 186 WIDTH="100%" |
187 BORDER="0" | |
188 CELLPADDING="0" | |
189 CELLSPACING="0" | |
190 ><TR | |
191 ><TD | |
192 WIDTH="33%" | |
193 ALIGN="left" | |
194 VALIGN="top" | |
195 ><A | |
196 HREF="eventfunctions.html" | |
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197 ACCESSKEY="P" |
0 | 198 >Prev</A |
199 ></TD | |
200 ><TD | |
201 WIDTH="34%" | |
202 ALIGN="center" | |
203 VALIGN="top" | |
204 ><A | |
205 HREF="index.html" | |
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206 ACCESSKEY="H" |
0 | 207 >Home</A |
208 ></TD | |
209 ><TD | |
210 WIDTH="33%" | |
211 ALIGN="right" | |
212 VALIGN="top" | |
213 ><A | |
214 HREF="sdlpeepevents.html" | |
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215 ACCESSKEY="N" |
0 | 216 >Next</A |
217 ></TD | |
218 ></TR | |
219 ><TR | |
220 ><TD | |
221 WIDTH="33%" | |
222 ALIGN="left" | |
223 VALIGN="top" | |
224 >Event Functions.</TD | |
225 ><TD | |
226 WIDTH="34%" | |
227 ALIGN="center" | |
228 VALIGN="top" | |
229 ><A | |
230 HREF="eventfunctions.html" | |
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231 ACCESSKEY="U" |
0 | 232 >Up</A |
233 ></TD | |
234 ><TD | |
235 WIDTH="33%" | |
236 ALIGN="right" | |
237 VALIGN="top" | |
238 >SDL_PeepEvents</TD | |
239 ></TR | |
240 ></TABLE | |
241 ></DIV | |
242 ></BODY | |
243 ></HTML | |
244 > |