Mercurial > sdl-ios-xcode
annotate docs/html/sdlupdaterects.html @ 983:7f08bd66f1ca
Date: Fri, 19 Nov 2004 06:23:53 -0800 (PST)
From: Eric Wing
Subject: OS X Mouse inversion problem fix (again)
Here's yet another patch for the OS X mouse inversion
problem. This should fix the problem once and for all.
I know I've said this before, but *This time for
sure!* :)
If you recall, my last patch broke the non-OpenGL
windowed code and caused the inversion to occur there
instead. Max submitted a patch that partially reverted
the changes back which included the os version hack
which is currently the most recent CVS.
Aaron Sullivan identified and reported to the mailing
list the other day, that the last partial regression
of the code broke OS X 10.2. Looking over the results,
I'm thinking that I was slightly more successful than
I thought at unifying the code. I think I was trying
to unify the code base for OpenGL and non-OpenGL
windowed modes for all versions of the OS. It looks
like I failed at at unifying the OpenGL and non-OpenGL
code, but I did succeed at unifying the OS versions.
Thus, we no longer need the hack for the OS version
checks. The partial regression still included an OS
check which is what broke things for < 10.3.
Attached is the patch for SDL_QuartzWM.m. It basically
is a half-line change that removes one of the two
checks that decides if the mouse coordinates need to
be inverted, i.e:
if (system_version >= 0x1030 &&
(SDL_VideoSurface->flags & SDL_OPENGL) )
becomes this:
if(SDL_VideoSurface->flags & SDL_OPENGL)
With Aaron's outstanding help, we have collectively
tested:
windowed OpenGL
windowed non-OpenGL
fullscreen OpenGL
fullscreen non-OpenGL
under OS X 10.2 (Jaguar), 10.3 (Panther), and 10.4
(Tiger).
We don't have access to 10.0 or 10.1, but since the
original problem didn't materialize until 10.3, I'm
hopeful that testing 10.2 is sufficient. And now that
the code is uniform, I'm also hoping we'll be safe
moving forward to deal with future revisions of the OS
with this issue.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 21 Nov 2004 00:57:47 +0000 |
parents | 355632dca928 |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_UpdateRects</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_UpdateRect" | |
17 HREF="sdlupdaterect.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_Flip" | |
20 HREF="sdlflip.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="sdlupdaterect.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="sdlflip.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="SDLUPDATERECTS" | |
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74 ></A |
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75 >SDL_UpdateRects</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN1392" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_UpdateRects -- Makes sure the given list of rectangles is updated on the given screen.</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN1395" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN1396" |
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_UpdateRects</B | |
108 ></CODE | |
109 >(SDL_Surface *screen, int numrects, SDL_Rect *rects);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN1402" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
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123 >Makes sure the given list of rectangles is updated on the given screen. |
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124 The rectangles must all be confined within the screen boundaries (no |
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125 clipping is done).</P |
0 | 126 ><P |
127 >This function should not be called while <TT | |
128 CLASS="PARAMETER" | |
129 ><I | |
130 >screen</I | |
131 ></TT | |
132 > is | |
133 <A | |
134 HREF="sdllocksurface.html" | |
135 >locked</A | |
55
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136 >.</P |
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137 ><DIV |
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138 CLASS="NOTE" |
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139 ><BLOCKQUOTE |
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140 CLASS="NOTE" |
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141 ><P |
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142 ><B |
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143 >Note: </B |
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144 >It is adviced to call this function only once per frame, since each |
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145 call has some processing overhead. This is no restriction since you |
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146 can pass any number of rectangles each time.</P |
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147 ><P |
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148 >The rectangles are not automatically merged or checked for overlap. In |
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149 general, the programmer can use his knowledge about his particular |
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150 rectangles to merge them in an efficient way, to avoid overdraw.</P |
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151 ></BLOCKQUOTE |
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152 ></DIV |
0 | 153 ></DIV |
154 ><DIV | |
155 CLASS="REFSECT1" | |
156 ><A | |
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157 NAME="AEN1411" |
0 | 158 ></A |
159 ><H2 | |
160 >See Also</H2 | |
161 ><P | |
162 ><A | |
163 HREF="sdlupdaterect.html" | |
164 ><TT | |
165 CLASS="FUNCTION" | |
166 >SDL_UpdateRect</TT | |
167 ></A | |
168 >, | |
169 <A | |
170 HREF="sdlrect.html" | |
171 ><SPAN | |
172 CLASS="STRUCTNAME" | |
173 >SDL_Rect</SPAN | |
174 ></A | |
175 >, | |
176 <A | |
177 HREF="sdlsurface.html" | |
178 ><SPAN | |
179 CLASS="STRUCTNAME" | |
180 >SDL_Surface</SPAN | |
181 ></A | |
182 >, | |
183 <A | |
184 HREF="sdllocksurface.html" | |
185 ><TT | |
186 CLASS="FUNCTION" | |
187 >SDL_LockSurface</TT | |
188 ></A | |
189 ></P | |
190 ></DIV | |
191 ><DIV | |
192 CLASS="NAVFOOTER" | |
193 ><HR | |
194 ALIGN="LEFT" | |
195 WIDTH="100%"><TABLE | |
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196 SUMMARY="Footer navigation table" |
0 | 197 WIDTH="100%" |
198 BORDER="0" | |
199 CELLPADDING="0" | |
200 CELLSPACING="0" | |
201 ><TR | |
202 ><TD | |
203 WIDTH="33%" | |
204 ALIGN="left" | |
205 VALIGN="top" | |
206 ><A | |
207 HREF="sdlupdaterect.html" | |
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208 ACCESSKEY="P" |
0 | 209 >Prev</A |
210 ></TD | |
211 ><TD | |
212 WIDTH="34%" | |
213 ALIGN="center" | |
214 VALIGN="top" | |
215 ><A | |
216 HREF="index.html" | |
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217 ACCESSKEY="H" |
0 | 218 >Home</A |
219 ></TD | |
220 ><TD | |
221 WIDTH="33%" | |
222 ALIGN="right" | |
223 VALIGN="top" | |
224 ><A | |
225 HREF="sdlflip.html" | |
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226 ACCESSKEY="N" |
0 | 227 >Next</A |
228 ></TD | |
229 ></TR | |
230 ><TR | |
231 ><TD | |
232 WIDTH="33%" | |
233 ALIGN="left" | |
234 VALIGN="top" | |
235 >SDL_UpdateRect</TD | |
236 ><TD | |
237 WIDTH="34%" | |
238 ALIGN="center" | |
239 VALIGN="top" | |
240 ><A | |
241 HREF="video.html" | |
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242 ACCESSKEY="U" |
0 | 243 >Up</A |
244 ></TD | |
245 ><TD | |
246 WIDTH="33%" | |
247 ALIGN="right" | |
248 VALIGN="top" | |
249 >SDL_Flip</TD | |
250 ></TR | |
251 ></TABLE | |
252 ></DIV | |
253 ></BODY | |
254 ></HTML | |
255 > |