Mercurial > sdl-ios-xcode
annotate docs/html/sdlupdaterect.html @ 821:30168104389f
Date: Sat, 14 Feb 2004 14:52:40 +0200
From: "Mike Gorchak"
Subject: Batch of the QNX6 fixes for the SDL
1. Updated readme.QNX
2. Fixed crashes during intensive window updating under fast machines (got over 200 rectangles for update).
3. Fixed double-buffered fullscreen modes, now it works as needed.
4. Fixed Photon detection algorithm.
5. Fixed HWSURFACE update function.
6. Added SDL_PHOTON_FULLSCREEN_REFRESH environment variable support for control refresh rates under Photon.
7. Added 640x400 fullscreen mode emulation via 640x480 (if videodriver not supports original 640x400 mode of course) shifted by 40 vertical pixels from begin, to center it. It's needed for some old DOS games which ran in doubled 320x200 mode.
8. Added available video ram amount support.
8. Added hardware surface allocation/deallocation support if current videomode and videodriver supports it.
9. Added hardware filling support.
10. Added hardware blits support (simple and colorkeyed).
And I've added to testvidinfo test color-keyed blits benchmark (maybe need to add alpha blits benchmark too ?). Currently Photon not supporting any alpha hardware blittings (all drivers lack of alpha blitting code support, only software alpha blitting exist in photon, which is hundreds times slowest than the SDL's one). So I've not added the alpha support. I suppose new QNX 6.3 will have the hardware alpha support, so when it will be done, I'll add alpha support.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sat, 14 Feb 2004 20:22:21 +0000 |
parents | 355632dca928 |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_UpdateRect</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_SetVideoMode" | |
17 HREF="sdlsetvideomode.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_UpdateRects" | |
20 HREF="sdlupdaterects.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="sdlsetvideomode.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="sdlupdaterects.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="SDLUPDATERECT" | |
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74 ></A |
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75 >SDL_UpdateRect</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN1355" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_UpdateRect -- Makes sure the given area is updated on the given screen.</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN1358" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN1359" |
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_UpdateRect</B | |
108 ></CODE | |
109 >(SDL_Surface *screen, Sint32 x, Sint32 y, Sint32 w, Sint32 h);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN1365" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
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123 >Makes sure the given area is updated on the given screen. The rectangle must |
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124 be confined within the screen boundaries (no clipping is done).</P |
0 | 125 ><P |
126 >If '<TT | |
127 CLASS="PARAMETER" | |
128 ><I | |
129 >x</I | |
130 ></TT | |
131 >', '<TT | |
132 CLASS="PARAMETER" | |
133 ><I | |
134 >y</I | |
135 ></TT | |
136 >', '<TT | |
137 CLASS="PARAMETER" | |
138 ><I | |
139 >w</I | |
140 ></TT | |
141 >' | |
142 and '<TT | |
143 CLASS="PARAMETER" | |
144 ><I | |
145 >h</I | |
146 ></TT | |
147 >' are all 0, | |
148 <TT | |
149 CLASS="FUNCTION" | |
150 >SDL_UpdateRect</TT | |
151 > will update the | |
152 entire screen.</P | |
153 ><P | |
154 >This function should not be called while '<TT | |
155 CLASS="PARAMETER" | |
156 ><I | |
157 >screen</I | |
158 ></TT | |
159 >' is | |
160 <A | |
161 HREF="sdllocksurface.html" | |
162 >locked</A | |
163 >.</P | |
164 ></DIV | |
165 ><DIV | |
166 CLASS="REFSECT1" | |
167 ><A | |
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168 NAME="AEN1377" |
0 | 169 ></A |
170 ><H2 | |
171 >See Also</H2 | |
172 ><P | |
173 ><A | |
174 HREF="sdlupdaterects.html" | |
175 ><TT | |
176 CLASS="FUNCTION" | |
177 >SDL_UpdateRects</TT | |
178 ></A | |
179 >, | |
180 <A | |
181 HREF="sdlrect.html" | |
182 ><SPAN | |
183 CLASS="STRUCTNAME" | |
184 >SDL_Rect</SPAN | |
185 ></A | |
186 >, | |
187 <A | |
188 HREF="sdlsurface.html" | |
189 ><SPAN | |
190 CLASS="STRUCTNAME" | |
191 >SDL_Surface</SPAN | |
192 ></A | |
193 >, | |
194 <A | |
195 HREF="sdllocksurface.html" | |
196 ><TT | |
197 CLASS="FUNCTION" | |
198 >SDL_LockSurface</TT | |
199 ></A | |
200 ></P | |
201 ></DIV | |
202 ><DIV | |
203 CLASS="NAVFOOTER" | |
204 ><HR | |
205 ALIGN="LEFT" | |
206 WIDTH="100%"><TABLE | |
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207 SUMMARY="Footer navigation table" |
0 | 208 WIDTH="100%" |
209 BORDER="0" | |
210 CELLPADDING="0" | |
211 CELLSPACING="0" | |
212 ><TR | |
213 ><TD | |
214 WIDTH="33%" | |
215 ALIGN="left" | |
216 VALIGN="top" | |
217 ><A | |
218 HREF="sdlsetvideomode.html" | |
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219 ACCESSKEY="P" |
0 | 220 >Prev</A |
221 ></TD | |
222 ><TD | |
223 WIDTH="34%" | |
224 ALIGN="center" | |
225 VALIGN="top" | |
226 ><A | |
227 HREF="index.html" | |
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228 ACCESSKEY="H" |
0 | 229 >Home</A |
230 ></TD | |
231 ><TD | |
232 WIDTH="33%" | |
233 ALIGN="right" | |
234 VALIGN="top" | |
235 ><A | |
236 HREF="sdlupdaterects.html" | |
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237 ACCESSKEY="N" |
0 | 238 >Next</A |
239 ></TD | |
240 ></TR | |
241 ><TR | |
242 ><TD | |
243 WIDTH="33%" | |
244 ALIGN="left" | |
245 VALIGN="top" | |
246 >SDL_SetVideoMode</TD | |
247 ><TD | |
248 WIDTH="34%" | |
249 ALIGN="center" | |
250 VALIGN="top" | |
251 ><A | |
252 HREF="video.html" | |
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253 ACCESSKEY="U" |
0 | 254 >Up</A |
255 ></TD | |
256 ><TD | |
257 WIDTH="33%" | |
258 ALIGN="right" | |
259 VALIGN="top" | |
260 >SDL_UpdateRects</TD | |
261 ></TR | |
262 ></TABLE | |
263 ></DIV | |
264 ></BODY | |
265 ></HTML | |
266 > |