Mercurial > sdl-ios-xcode
annotate docs/html/guidepreface.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 >Preface</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 Guide" | |
14 HREF="guide.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL Guide" | |
17 HREF="guide.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="About SDLdoc" | |
20 HREF="guideaboutsdldoc.html"></HEAD | |
21 ><BODY | |
22 CLASS="PREFACE" | |
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="guide.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="guideaboutsdldoc.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 ><DIV | |
72 CLASS="PREFACE" | |
73 ><H1 | |
74 ><A | |
75 NAME="GUIDEPREFACE" | |
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76 ></A |
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77 >Preface</H1 |
0 | 78 ><DIV |
79 CLASS="TOC" | |
80 ><DL | |
81 ><DT | |
82 ><B | |
83 >Table of Contents</B | |
84 ></DT | |
85 ><DT | |
86 ><A | |
87 HREF="guidepreface.html#GUIDEABOUTSDL" | |
88 >About SDL</A | |
89 ></DT | |
90 ><DT | |
91 ><A | |
92 HREF="guideaboutsdldoc.html" | |
93 >About SDLdoc</A | |
94 ></DT | |
95 ><DT | |
96 ><A | |
97 HREF="guidecredits.html" | |
98 >Credits</A | |
99 ></DT | |
100 ></DL | |
101 ></DIV | |
102 ><DIV | |
103 CLASS="SECT1" | |
104 ><H1 | |
105 CLASS="SECT1" | |
106 ><A | |
107 NAME="GUIDEABOUTSDL" | |
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parents:
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108 ></A |
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parents:
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109 >About SDL</H1 |
0 | 110 ><P |
111 >The SDL library is designed to make it easy to write games that run on Linux, *BSD, MacOS, Win32 and BeOS using the various native high-performance media interfaces, (for video, audio, etc) and presenting a single source-code level API to your application. SDL is a fairly low level API, but using it, completely portable applications can be written with a great deal of flexibility.</P | |
112 ></DIV | |
113 ></DIV | |
114 ><DIV | |
115 CLASS="NAVFOOTER" | |
116 ><HR | |
117 ALIGN="LEFT" | |
118 WIDTH="100%"><TABLE | |
803
355632dca928
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Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
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119 SUMMARY="Footer navigation table" |
0 | 120 WIDTH="100%" |
121 BORDER="0" | |
122 CELLPADDING="0" | |
123 CELLSPACING="0" | |
124 ><TR | |
125 ><TD | |
126 WIDTH="33%" | |
127 ALIGN="left" | |
128 VALIGN="top" | |
129 ><A | |
130 HREF="guide.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
131 ACCESSKEY="P" |
0 | 132 >Prev</A |
133 ></TD | |
134 ><TD | |
135 WIDTH="34%" | |
136 ALIGN="center" | |
137 VALIGN="top" | |
138 ><A | |
139 HREF="index.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
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140 ACCESSKEY="H" |
0 | 141 >Home</A |
142 ></TD | |
143 ><TD | |
144 WIDTH="33%" | |
145 ALIGN="right" | |
146 VALIGN="top" | |
147 ><A | |
148 HREF="guideaboutsdldoc.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
149 ACCESSKEY="N" |
0 | 150 >Next</A |
151 ></TD | |
152 ></TR | |
153 ><TR | |
154 ><TD | |
155 WIDTH="33%" | |
156 ALIGN="left" | |
157 VALIGN="top" | |
158 >SDL Guide</TD | |
159 ><TD | |
160 WIDTH="34%" | |
161 ALIGN="center" | |
162 VALIGN="top" | |
163 ><A | |
164 HREF="guide.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
165 ACCESSKEY="U" |
0 | 166 >Up</A |
167 ></TD | |
168 ><TD | |
169 WIDTH="33%" | |
170 ALIGN="right" | |
171 VALIGN="top" | |
172 >About SDLdoc</TD | |
173 ></TR | |
174 ></TABLE | |
175 ></DIV | |
176 ></BODY | |
177 ></HTML | |
178 > |