Mercurial > sdl-ios-xcode
annotate docs/html/sdlcondsignal.html @ 1012:f14e3059e138
Date: Mon, 13 Dec 2004 21:28:18 -0500
From: Jonathan Atkins
Subject: [SDL] SDL_SaveBMP width bugfix
this fixes the pitch versus width difference that can happen
(especially for 8bit and 24bit (with the exact RGBAmasks) surfaces)
when you use SDL_SaveBMP. The problem was the pitch was used
instead of the width, which in some cases is much wider than the
screen area you really want to save...making for ugly crud on the
saved image borders.
This code has been tested with & without pitch overhangs...and
with the right masks for 24 bit surfaces.
I tested 8,15,16,24,32-0RGB,32-RGBA(with no SDL_SRCALPHA flag).
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 14 Dec 2004 06:20:49 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_CondSignal</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="Multi-threaded Programming" | |
14 HREF="thread.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_DestroyCond" | |
17 HREF="sdldestroycond.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_CondBroadcast" | |
20 HREF="sdlcondbroadcast.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="sdldestroycond.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="sdlcondbroadcast.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="SDLCONDSIGNAL" | |
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74 ></A |
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75 >SDL_CondSignal</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN8310" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_CondSignal -- Restart a thread wait on a condition variable</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN8313" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN8314" |
0 | 95 ></A |
96 ><P | |
97 ></P | |
98 ><PRE | |
99 CLASS="FUNCSYNOPSISINFO" | |
100 >#include "SDL.h" | |
101 #include "SDL_thread.h"</PRE | |
102 ><P | |
103 ><CODE | |
104 ><CODE | |
105 CLASS="FUNCDEF" | |
106 >int <B | |
107 CLASS="FSFUNC" | |
108 >SDL_CondSignal</B | |
109 ></CODE | |
110 >(SDL_cond *cond);</CODE | |
111 ></P | |
112 ><P | |
113 ></P | |
114 ></DIV | |
115 ></DIV | |
116 ><DIV | |
117 CLASS="REFSECT1" | |
118 ><A | |
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119 NAME="AEN8320" |
0 | 120 ></A |
121 ><H2 | |
122 >Description</H2 | |
123 ><P | |
124 >Restart one of the threads that are waiting on the condition variable, <TT | |
125 CLASS="PARAMETER" | |
126 ><I | |
127 >cond</I | |
128 ></TT | |
129 >. Returns <SPAN | |
130 CLASS="RETURNVALUE" | |
131 >0</SPAN | |
132 > on success of <SPAN | |
133 CLASS="RETURNVALUE" | |
134 >-1</SPAN | |
135 > on an error.</P | |
136 ></DIV | |
137 ><DIV | |
138 CLASS="REFSECT1" | |
139 ><A | |
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140 NAME="AEN8326" |
0 | 141 ></A |
142 ><H2 | |
143 >See Also</H2 | |
144 ><P | |
145 ><A | |
146 HREF="sdlcondwait.html" | |
147 ><TT | |
148 CLASS="FUNCTION" | |
149 >SDL_CondWait</TT | |
150 ></A | |
151 >, | |
152 <A | |
153 HREF="sdlcondbroadcast.html" | |
154 ><TT | |
155 CLASS="FUNCTION" | |
156 >SDL_CondBroadcast</TT | |
157 ></A | |
158 ></P | |
159 ></DIV | |
160 ><DIV | |
161 CLASS="NAVFOOTER" | |
162 ><HR | |
163 ALIGN="LEFT" | |
164 WIDTH="100%"><TABLE | |
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165 SUMMARY="Footer navigation table" |
0 | 166 WIDTH="100%" |
167 BORDER="0" | |
168 CELLPADDING="0" | |
169 CELLSPACING="0" | |
170 ><TR | |
171 ><TD | |
172 WIDTH="33%" | |
173 ALIGN="left" | |
174 VALIGN="top" | |
175 ><A | |
176 HREF="sdldestroycond.html" | |
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177 ACCESSKEY="P" |
0 | 178 >Prev</A |
179 ></TD | |
180 ><TD | |
181 WIDTH="34%" | |
182 ALIGN="center" | |
183 VALIGN="top" | |
184 ><A | |
185 HREF="index.html" | |
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186 ACCESSKEY="H" |
0 | 187 >Home</A |
188 ></TD | |
189 ><TD | |
190 WIDTH="33%" | |
191 ALIGN="right" | |
192 VALIGN="top" | |
193 ><A | |
194 HREF="sdlcondbroadcast.html" | |
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parents:
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195 ACCESSKEY="N" |
0 | 196 >Next</A |
197 ></TD | |
198 ></TR | |
199 ><TR | |
200 ><TD | |
201 WIDTH="33%" | |
202 ALIGN="left" | |
203 VALIGN="top" | |
204 >SDL_DestroyCond</TD | |
205 ><TD | |
206 WIDTH="34%" | |
207 ALIGN="center" | |
208 VALIGN="top" | |
209 ><A | |
210 HREF="thread.html" | |
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parents:
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211 ACCESSKEY="U" |
0 | 212 >Up</A |
213 ></TD | |
214 ><TD | |
215 WIDTH="33%" | |
216 ALIGN="right" | |
217 VALIGN="top" | |
218 >SDL_CondBroadcast</TD | |
219 ></TR | |
220 ></TABLE | |
221 ></DIV | |
222 ></BODY | |
223 ></HTML | |
224 > |