Mercurial > sdl-ios-xcode
annotate docs/html/sdlgetcliprect.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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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_GetClipRect</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_SetClipRect" | |
17 HREF="sdlsetcliprect.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_ConvertSurface" | |
20 HREF="sdlconvertsurface.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="sdlsetcliprect.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="sdlconvertsurface.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="SDLGETCLIPRECT" | |
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74 ></A |
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75 >SDL_GetClipRect</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN2230" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_GetClipRect -- Gets the clipping rectangle for a surface.</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN2233" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN2234" |
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_GetClipRect</B | |
108 ></CODE | |
109 >(SDL_Surface *surface, SDL_Rect *rect);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN2240" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Gets the clipping rectangle for a surface. When this surface is the | |
124 destination of a blit, only the area within the clip rectangle is | |
125 drawn into.</P | |
126 ><P | |
127 >The rectangle pointed to by <TT | |
128 CLASS="PARAMETER" | |
129 ><I | |
130 >rect</I | |
131 ></TT | |
132 > will be | |
133 filled with the clipping rectangle of the surface.</P | |
134 ></DIV | |
135 ><DIV | |
136 CLASS="REFSECT1" | |
137 ><A | |
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138 NAME="AEN2245" |
0 | 139 ></A |
140 ><H2 | |
141 >See Also</H2 | |
142 ><P | |
143 ><A | |
144 HREF="sdlsetcliprect.html" | |
145 ><TT | |
146 CLASS="FUNCTION" | |
147 >SDL_SetClipRect</TT | |
148 ></A | |
149 >, | |
150 <A | |
151 HREF="sdlblitsurface.html" | |
152 ><TT | |
153 CLASS="FUNCTION" | |
154 >SDL_BlitSurface</TT | |
155 ></A | |
156 >, | |
157 <A | |
158 HREF="sdlsurface.html" | |
159 ><SPAN | |
160 CLASS="STRUCTNAME" | |
161 >SDL_Surface</SPAN | |
162 ></A | |
163 ></P | |
164 ></DIV | |
165 ><DIV | |
166 CLASS="NAVFOOTER" | |
167 ><HR | |
168 ALIGN="LEFT" | |
169 WIDTH="100%"><TABLE | |
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170 SUMMARY="Footer navigation table" |
0 | 171 WIDTH="100%" |
172 BORDER="0" | |
173 CELLPADDING="0" | |
174 CELLSPACING="0" | |
175 ><TR | |
176 ><TD | |
177 WIDTH="33%" | |
178 ALIGN="left" | |
179 VALIGN="top" | |
180 ><A | |
181 HREF="sdlsetcliprect.html" | |
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182 ACCESSKEY="P" |
0 | 183 >Prev</A |
184 ></TD | |
185 ><TD | |
186 WIDTH="34%" | |
187 ALIGN="center" | |
188 VALIGN="top" | |
189 ><A | |
190 HREF="index.html" | |
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191 ACCESSKEY="H" |
0 | 192 >Home</A |
193 ></TD | |
194 ><TD | |
195 WIDTH="33%" | |
196 ALIGN="right" | |
197 VALIGN="top" | |
198 ><A | |
199 HREF="sdlconvertsurface.html" | |
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200 ACCESSKEY="N" |
0 | 201 >Next</A |
202 ></TD | |
203 ></TR | |
204 ><TR | |
205 ><TD | |
206 WIDTH="33%" | |
207 ALIGN="left" | |
208 VALIGN="top" | |
209 >SDL_SetClipRect</TD | |
210 ><TD | |
211 WIDTH="34%" | |
212 ALIGN="center" | |
213 VALIGN="top" | |
214 ><A | |
215 HREF="video.html" | |
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216 ACCESSKEY="U" |
0 | 217 >Up</A |
218 ></TD | |
219 ><TD | |
220 WIDTH="33%" | |
221 ALIGN="right" | |
222 VALIGN="top" | |
223 >SDL_ConvertSurface</TD | |
224 ></TR | |
225 ></TABLE | |
226 ></DIV | |
227 ></BODY | |
228 ></HTML | |
229 > |