Mercurial > sdl-ios-xcode
annotate docs/html/sdlglswapbuffers.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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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_GL_SwapBuffers</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="Video" | |
14 HREF="video.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_GL_SetAttribute" | |
17 HREF="sdlglsetattribute.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_CreateYUVOverlay" | |
20 HREF="sdlcreateyuvoverlay.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="sdlglsetattribute.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="sdlcreateyuvoverlay.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="SDLGLSWAPBUFFERS" | |
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74 ></A |
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75 >SDL_GL_SwapBuffers</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN2784" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_GL_SwapBuffers -- Swap OpenGL framebuffers/Update Display</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN2787" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN2788" |
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_GL_SwapBuffers</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="AEN2794" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Swap the OpenGL buffers, if double-buffering is supported.</P | |
124 ></DIV | |
125 ><DIV | |
126 CLASS="REFSECT1" | |
127 ><A | |
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128 NAME="AEN2797" |
0 | 129 ></A |
130 ><H2 | |
131 >See Also</H2 | |
132 ><P | |
133 ><A | |
134 HREF="sdlsetvideomode.html" | |
135 ><TT | |
136 CLASS="FUNCTION" | |
137 >SDL_SetVideoMode</TT | |
138 ></A | |
139 >, | |
140 <A | |
141 HREF="sdlglsetattribute.html" | |
142 ><TT | |
143 CLASS="FUNCTION" | |
144 >SDL_GL_SetAttribute</TT | |
145 ></A | |
146 ></P | |
147 ></DIV | |
148 ><DIV | |
149 CLASS="NAVFOOTER" | |
150 ><HR | |
151 ALIGN="LEFT" | |
152 WIDTH="100%"><TABLE | |
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153 SUMMARY="Footer navigation table" |
0 | 154 WIDTH="100%" |
155 BORDER="0" | |
156 CELLPADDING="0" | |
157 CELLSPACING="0" | |
158 ><TR | |
159 ><TD | |
160 WIDTH="33%" | |
161 ALIGN="left" | |
162 VALIGN="top" | |
163 ><A | |
164 HREF="sdlglsetattribute.html" | |
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165 ACCESSKEY="P" |
0 | 166 >Prev</A |
167 ></TD | |
168 ><TD | |
169 WIDTH="34%" | |
170 ALIGN="center" | |
171 VALIGN="top" | |
172 ><A | |
173 HREF="index.html" | |
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174 ACCESSKEY="H" |
0 | 175 >Home</A |
176 ></TD | |
177 ><TD | |
178 WIDTH="33%" | |
179 ALIGN="right" | |
180 VALIGN="top" | |
181 ><A | |
182 HREF="sdlcreateyuvoverlay.html" | |
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183 ACCESSKEY="N" |
0 | 184 >Next</A |
185 ></TD | |
186 ></TR | |
187 ><TR | |
188 ><TD | |
189 WIDTH="33%" | |
190 ALIGN="left" | |
191 VALIGN="top" | |
192 >SDL_GL_SetAttribute</TD | |
193 ><TD | |
194 WIDTH="34%" | |
195 ALIGN="center" | |
196 VALIGN="top" | |
197 ><A | |
198 HREF="video.html" | |
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199 ACCESSKEY="U" |
0 | 200 >Up</A |
201 ></TD | |
202 ><TD | |
203 WIDTH="33%" | |
204 ALIGN="right" | |
205 VALIGN="top" | |
206 >SDL_CreateYUVOverlay</TD | |
207 ></TR | |
208 ></TABLE | |
209 ></DIV | |
210 ></BODY | |
211 ></HTML | |
212 > |