Mercurial > sdl-ios-xcode
annotate docs/html/event.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 >Events</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="SDL Reference" | |
14 HREF="reference.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_WM_GrabInput" | |
17 HREF="sdlwmgrabinput.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL Event Structures." | |
20 HREF="eventstructures.html"><META | |
21 NAME="KEYWORD" | |
22 CONTENT="events"><META | |
23 NAME="KEYWORD" | |
24 CONTENT="function"></HEAD | |
25 ><BODY | |
26 CLASS="CHAPTER" | |
27 BGCOLOR="#FFF8DC" | |
28 TEXT="#000000" | |
29 LINK="#0000ee" | |
30 VLINK="#551a8b" | |
31 ALINK="#ff0000" | |
32 ><DIV | |
33 CLASS="NAVHEADER" | |
34 ><TABLE | |
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35 SUMMARY="Header navigation table" |
0 | 36 WIDTH="100%" |
37 BORDER="0" | |
38 CELLPADDING="0" | |
39 CELLSPACING="0" | |
40 ><TR | |
41 ><TH | |
42 COLSPAN="3" | |
43 ALIGN="center" | |
44 >SDL Library Documentation</TH | |
45 ></TR | |
46 ><TR | |
47 ><TD | |
48 WIDTH="10%" | |
49 ALIGN="left" | |
50 VALIGN="bottom" | |
51 ><A | |
52 HREF="sdlwmgrabinput.html" | |
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53 ACCESSKEY="P" |
0 | 54 >Prev</A |
55 ></TD | |
56 ><TD | |
57 WIDTH="80%" | |
58 ALIGN="center" | |
59 VALIGN="bottom" | |
60 ></TD | |
61 ><TD | |
62 WIDTH="10%" | |
63 ALIGN="right" | |
64 VALIGN="bottom" | |
65 ><A | |
66 HREF="eventstructures.html" | |
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67 ACCESSKEY="N" |
0 | 68 >Next</A |
69 ></TD | |
70 ></TR | |
71 ></TABLE | |
72 ><HR | |
73 ALIGN="LEFT" | |
74 WIDTH="100%"></DIV | |
75 ><DIV | |
76 CLASS="CHAPTER" | |
77 ><H1 | |
78 ><A | |
79 NAME="EVENT" | |
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80 ></A |
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81 >Chapter 8. Events</H1 |
0 | 82 ><DIV |
83 CLASS="TOC" | |
84 ><DL | |
85 ><DT | |
86 ><B | |
87 >Table of Contents</B | |
88 ></DT | |
89 ><DT | |
90 ><A | |
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91 HREF="event.html#AEN3691" |
0 | 92 >Introduction</A |
93 ></DT | |
94 ><DT | |
95 ><A | |
96 HREF="eventstructures.html" | |
97 >SDL Event Structures.</A | |
98 ></DT | |
99 ><DT | |
100 ><A | |
101 HREF="eventfunctions.html" | |
102 >Event Functions.</A | |
103 ></DT | |
104 ></DL | |
105 ></DIV | |
106 ><DIV | |
107 CLASS="SECT1" | |
108 ><H1 | |
109 CLASS="SECT1" | |
110 ><A | |
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111 NAME="AEN3691" |
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112 ></A |
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113 >Introduction</H1 |
0 | 114 ><P |
115 >Event handling allows your application to receive input from the user. Event handling is initalised (along with video) with a call to: | |
116 <PRE | |
117 CLASS="PROGRAMLISTING" | |
118 >SDL_Init(SDL_INIT_VIDEO);</PRE | |
119 > | |
181
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120 Internally, SDL stores all the events waiting to be handled in an event queue. Using functions like <A |
0 | 121 HREF="sdlpollevent.html" |
122 ><TT | |
123 CLASS="FUNCTION" | |
124 >SDL_PollEvent</TT | |
125 ></A | |
126 > and <A | |
127 HREF="sdlpeepevents.html" | |
128 ><TT | |
129 CLASS="FUNCTION" | |
130 >SDL_PeepEvents</TT | |
131 ></A | |
132 > you can observe and handle waiting input events.</P | |
133 ><P | |
134 >The key to event handling in SDL is the <A | |
135 HREF="sdlevent.html" | |
136 ><SPAN | |
137 CLASS="STRUCTNAME" | |
138 >SDL_Event</SPAN | |
139 ></A | |
140 > union. The event queue itself is composed of a series of <SPAN | |
141 CLASS="STRUCTNAME" | |
142 >SDL_Event</SPAN | |
143 > unions, one for each waiting event. <SPAN | |
144 CLASS="STRUCTNAME" | |
145 >SDL_Event</SPAN | |
146 > unions are read from the queue with the <TT | |
147 CLASS="FUNCTION" | |
148 >SDL_PollEvent</TT | |
149 > function and it is then up to the application to process the information stored with them.</P | |
150 ></DIV | |
151 ></DIV | |
152 ><DIV | |
153 CLASS="NAVFOOTER" | |
154 ><HR | |
155 ALIGN="LEFT" | |
156 WIDTH="100%"><TABLE | |
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157 SUMMARY="Footer navigation table" |
0 | 158 WIDTH="100%" |
159 BORDER="0" | |
160 CELLPADDING="0" | |
161 CELLSPACING="0" | |
162 ><TR | |
163 ><TD | |
164 WIDTH="33%" | |
165 ALIGN="left" | |
166 VALIGN="top" | |
167 ><A | |
168 HREF="sdlwmgrabinput.html" | |
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169 ACCESSKEY="P" |
0 | 170 >Prev</A |
171 ></TD | |
172 ><TD | |
173 WIDTH="34%" | |
174 ALIGN="center" | |
175 VALIGN="top" | |
176 ><A | |
177 HREF="index.html" | |
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178 ACCESSKEY="H" |
0 | 179 >Home</A |
180 ></TD | |
181 ><TD | |
182 WIDTH="33%" | |
183 ALIGN="right" | |
184 VALIGN="top" | |
185 ><A | |
186 HREF="eventstructures.html" | |
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187 ACCESSKEY="N" |
0 | 188 >Next</A |
189 ></TD | |
190 ></TR | |
191 ><TR | |
192 ><TD | |
193 WIDTH="33%" | |
194 ALIGN="left" | |
195 VALIGN="top" | |
196 >SDL_WM_GrabInput</TD | |
197 ><TD | |
198 WIDTH="34%" | |
199 ALIGN="center" | |
200 VALIGN="top" | |
201 ><A | |
202 HREF="reference.html" | |
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203 ACCESSKEY="U" |
0 | 204 >Up</A |
205 ></TD | |
206 ><TD | |
207 WIDTH="33%" | |
208 ALIGN="right" | |
209 VALIGN="top" | |
210 >SDL Event Structures.</TD | |
211 ></TR | |
212 ></TABLE | |
213 ></DIV | |
214 ></BODY | |
215 ></HTML | |
216 > |