Mercurial > sdl-ios-xcode
annotate docs/html/sdlpauseaudio.html @ 3100:7dc982143c06
Date: Sun, 22 Mar 2009 12:52:29 +0000
From: Luke Benstead
Subject: OpenGL 3.0 Context Creation
I've attached a patch which implements OpenGL 3.x context creation on
the latest SVN. I've added two options to SDL_GL_SetAttribute, these
are SDL_GL_CONTEXT_MAJOR_VERSION and SDL_GL_CONTEXT_MINOR_VERSION.
These default to 2 and 1 respectively. If the major version is less
than 3 then the current context creation method is used, otherwise the
appropriate new context creation function is called (depending on the
platform).
Sample code:
if (SDL_Init(SDL_INIT_VIDEO) != 0) {
printf("Unable to initialize SDL: %s\n", SDL_GetError());
return 1;
}
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3); //Without these 2 lines, SDL will create a GL 2.x context
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_Surface* screen = SDL_SetVideoMode( 640, 480, 16, SDL_OPENGL | SDL_FULLSCREEN );
I've implemented context creation on both Win32 and X and run basic
tests on both. This patch doesn't provide access to all the options
allowed by the new context creation (e.g. shared contexts, forward
compatible contexts) but they can be added pretty easily.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 24 Mar 2009 10:43:53 +0000 |
parents | 355632dca928 |
children |
rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_PauseAudio</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="Audio" | |
14 HREF="audio.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_OpenAudio" | |
17 HREF="sdlopenaudio.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_GetAudioStatus" | |
20 HREF="sdlgetaudiostatus.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="sdlopenaudio.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="sdlgetaudiostatus.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="SDLPAUSEAUDIO" | |
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74 ></A |
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75 >SDL_PauseAudio</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN6765" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_PauseAudio -- Pauses and unpauses the audio callback processing</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN6768" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN6769" |
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_PauseAudio</B | |
108 ></CODE | |
109 >(int pause_on);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN6775" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >This function pauses and unpauses the audio callback processing. | |
124 It should be called with <TT | |
125 CLASS="PARAMETER" | |
126 ><I | |
127 >pause_on</I | |
128 ></TT | |
129 >=0 after opening the audio | |
130 device to start playing sound. This is so you can safely initialize | |
131 data for your callback function after opening the audio device. | |
132 Silence will be written to the audio device during the pause.</P | |
133 ></DIV | |
134 ><DIV | |
135 CLASS="REFSECT1" | |
136 ><A | |
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137 NAME="AEN6779" |
0 | 138 ></A |
139 ><H2 | |
140 >See Also</H2 | |
141 ><P | |
142 ><A | |
143 HREF="sdlgetaudiostatus.html" | |
144 ><TT | |
145 CLASS="FUNCTION" | |
146 >SDL_GetAudioStatus</TT | |
147 ></A | |
148 >, | |
149 <A | |
150 HREF="sdlopenaudio.html" | |
151 ><TT | |
152 CLASS="FUNCTION" | |
153 >SDL_OpenAudio</TT | |
154 ></A | |
155 ></P | |
156 ></DIV | |
157 ><DIV | |
158 CLASS="NAVFOOTER" | |
159 ><HR | |
160 ALIGN="LEFT" | |
161 WIDTH="100%"><TABLE | |
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162 SUMMARY="Footer navigation table" |
0 | 163 WIDTH="100%" |
164 BORDER="0" | |
165 CELLPADDING="0" | |
166 CELLSPACING="0" | |
167 ><TR | |
168 ><TD | |
169 WIDTH="33%" | |
170 ALIGN="left" | |
171 VALIGN="top" | |
172 ><A | |
173 HREF="sdlopenaudio.html" | |
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174 ACCESSKEY="P" |
0 | 175 >Prev</A |
176 ></TD | |
177 ><TD | |
178 WIDTH="34%" | |
179 ALIGN="center" | |
180 VALIGN="top" | |
181 ><A | |
182 HREF="index.html" | |
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183 ACCESSKEY="H" |
0 | 184 >Home</A |
185 ></TD | |
186 ><TD | |
187 WIDTH="33%" | |
188 ALIGN="right" | |
189 VALIGN="top" | |
190 ><A | |
191 HREF="sdlgetaudiostatus.html" | |
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192 ACCESSKEY="N" |
0 | 193 >Next</A |
194 ></TD | |
195 ></TR | |
196 ><TR | |
197 ><TD | |
198 WIDTH="33%" | |
199 ALIGN="left" | |
200 VALIGN="top" | |
201 >SDL_OpenAudio</TD | |
202 ><TD | |
203 WIDTH="34%" | |
204 ALIGN="center" | |
205 VALIGN="top" | |
206 ><A | |
207 HREF="audio.html" | |
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208 ACCESSKEY="U" |
0 | 209 >Up</A |
210 ></TD | |
211 ><TD | |
212 WIDTH="33%" | |
213 ALIGN="right" | |
214 VALIGN="top" | |
215 >SDL_GetAudioStatus</TD | |
216 ></TR | |
217 ></TABLE | |
218 ></DIV | |
219 ></BODY | |
220 ></HTML | |
221 > |