Mercurial > sdl-ios-xcode
annotate docs/html/sdlsetcolors.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> |
---|---|
date | Sun, 21 Nov 2004 00:57:47 +0000 |
parents | 355632dca928 |
children |
rev | line source |
---|---|
0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_SetColors</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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_Flip" | |
17 HREF="sdlflip.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_SetPalette" | |
20 HREF="sdlsetpalette.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 | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="sdlflip.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="sdlsetpalette.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
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="SDLSETCOLORS" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
74 ></A |
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
75 >SDL_SetColors</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
79 NAME="AEN1462" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_SetColors -- Sets a portion of the colormap for the given 8-bit surface.</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
87 NAME="AEN1465" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
94 NAME="AEN1466" |
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 >int <B | |
106 CLASS="FSFUNC" | |
107 >SDL_SetColors</B | |
108 ></CODE | |
109 >(SDL_Surface *surface, SDL_Color *colors, int firstcolor, int ncolors);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
118 NAME="AEN1472" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Sets a portion of the colormap for the given 8-bit surface.</P | |
124 ><P | |
125 >When <TT | |
126 CLASS="PARAMETER" | |
127 ><I | |
128 >surface</I | |
129 ></TT | |
130 > is the surface associated with the current | |
131 display, the display colormap will be updated with the requested colors. If | |
132 <TT | |
133 CLASS="LITERAL" | |
134 >SDL_HWPALETTE</TT | |
135 > was set in <A | |
136 HREF="sdlsetvideomode.html" | |
137 >SDL_SetVideoMode</A | |
138 > flags, | |
139 <TT | |
140 CLASS="FUNCTION" | |
141 >SDL_SetColors</TT | |
142 > will always return <SPAN | |
143 CLASS="RETURNVALUE" | |
144 >1</SPAN | |
145 >, | |
146 and the palette is guaranteed to be set the way you desire, even if the window | |
147 colormap has to be warped or run under emulation.</P | |
148 ><P | |
149 >The color components of a | |
150 <A | |
151 HREF="sdlcolor.html" | |
152 ><SPAN | |
153 CLASS="STRUCTNAME" | |
154 >SDL_Color</SPAN | |
155 ></A | |
156 > | |
157 structure are 8-bits in size, giving you a total of 256<SUP | |
158 >3</SUP | |
159 > | |
160 =16777216 colors.</P | |
161 ><P | |
162 >Palettized (8-bit) screen surfaces with the <TT | |
163 CLASS="LITERAL" | |
164 >SDL_HWPALETTE</TT | |
165 > | |
166 flag have two palettes, a logical palette that is used for mapping blits | |
167 to/from the surface and a physical palette (that determines how the | |
168 hardware will map the colors to the display). <TT | |
169 CLASS="FUNCTION" | |
170 >SDL_SetColors</TT | |
171 > | |
172 modifies both palettes (if present), and is equivalent to calling | |
173 <A | |
174 HREF="sdlsetpalette.html" | |
175 >SDL_SetPalette</A | |
176 > with the | |
177 <TT | |
178 CLASS="PARAMETER" | |
179 ><I | |
180 >flags</I | |
181 ></TT | |
182 > set to | |
183 <TT | |
184 CLASS="LITERAL" | |
185 >(SDL_LOGPAL | SDL_PHYSPAL)</TT | |
186 >.</P | |
187 ></DIV | |
188 ><DIV | |
189 CLASS="REFSECT1" | |
190 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
191 NAME="AEN1491" |
0 | 192 ></A |
193 ><H2 | |
194 >Return Value</H2 | |
195 ><P | |
196 >If <TT | |
197 CLASS="PARAMETER" | |
198 ><I | |
199 >surface</I | |
200 ></TT | |
201 > is not a palettized surface, this function | |
202 does nothing, returning <SPAN | |
203 CLASS="RETURNVALUE" | |
204 >0</SPAN | |
205 >. If all of the colors were set | |
206 as passed to <TT | |
207 CLASS="FUNCTION" | |
208 >SDL_SetColors</TT | |
209 >, it will return | |
210 <SPAN | |
211 CLASS="RETURNVALUE" | |
212 >1</SPAN | |
213 >. If not all the color entries were set exactly as | |
214 given, it will return <SPAN | |
215 CLASS="RETURNVALUE" | |
216 >0</SPAN | |
217 >, and you should look at the | |
218 surface palette to determine the actual color palette.</P | |
219 ></DIV | |
220 ><DIV | |
221 CLASS="REFSECT1" | |
222 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
223 NAME="AEN1499" |
0 | 224 ></A |
225 ><H2 | |
226 >Example</H2 | |
227 ><PRE | |
228 CLASS="PROGRAMLISTING" | |
229 >/* Create a display surface with a grayscale palette */ | |
230 SDL_Surface *screen; | |
231 SDL_Color colors[256]; | |
232 int i; | |
233 . | |
234 . | |
235 . | |
236 /* Fill colors with color information */ | |
237 for(i=0;i<256;i++){ | |
238 colors[i].r=i; | |
239 colors[i].g=i; | |
240 colors[i].b=i; | |
241 } | |
242 | |
243 /* Create display */ | |
244 screen=SDL_SetVideoMode(640, 480, 8, SDL_HWPALETTE); | |
245 if(!screen){ | |
246 printf("Couldn't set video mode: %s\n", SDL_GetError()); | |
247 exit(-1); | |
248 } | |
249 | |
250 /* Set palette */ | |
251 SDL_SetColors(screen, colors, 0, 256); | |
252 . | |
253 . | |
254 . | |
255 .</PRE | |
256 ></DIV | |
257 ><DIV | |
258 CLASS="REFSECT1" | |
259 ><A | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
260 NAME="AEN1502" |
0 | 261 ></A |
262 ><H2 | |
263 >See Also</H2 | |
264 ><P | |
265 ><A | |
266 HREF="sdlcolor.html" | |
267 ><SPAN | |
268 CLASS="STRUCTNAME" | |
269 >SDL_Color</SPAN | |
270 ></A | |
271 > | |
272 <A | |
273 HREF="sdlsurface.html" | |
274 ><SPAN | |
275 CLASS="STRUCTNAME" | |
276 >SDL_Surface</SPAN | |
277 ></A | |
278 >, | |
279 <A | |
280 HREF="sdlsetpalette.html" | |
281 ><TT | |
282 CLASS="FUNCTION" | |
283 >SDL_SetPalette</TT | |
284 ></A | |
285 >, | |
286 <A | |
287 HREF="sdlsetvideomode.html" | |
288 ><TT | |
289 CLASS="FUNCTION" | |
290 >SDL_SetVideoMode</TT | |
291 ></A | |
292 ></P | |
293 ></DIV | |
294 ><DIV | |
295 CLASS="NAVFOOTER" | |
296 ><HR | |
297 ALIGN="LEFT" | |
298 WIDTH="100%"><TABLE | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
299 SUMMARY="Footer navigation table" |
0 | 300 WIDTH="100%" |
301 BORDER="0" | |
302 CELLPADDING="0" | |
303 CELLSPACING="0" | |
304 ><TR | |
305 ><TD | |
306 WIDTH="33%" | |
307 ALIGN="left" | |
308 VALIGN="top" | |
309 ><A | |
310 HREF="sdlflip.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
311 ACCESSKEY="P" |
0 | 312 >Prev</A |
313 ></TD | |
314 ><TD | |
315 WIDTH="34%" | |
316 ALIGN="center" | |
317 VALIGN="top" | |
318 ><A | |
319 HREF="index.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
320 ACCESSKEY="H" |
0 | 321 >Home</A |
322 ></TD | |
323 ><TD | |
324 WIDTH="33%" | |
325 ALIGN="right" | |
326 VALIGN="top" | |
327 ><A | |
328 HREF="sdlsetpalette.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
329 ACCESSKEY="N" |
0 | 330 >Next</A |
331 ></TD | |
332 ></TR | |
333 ><TR | |
334 ><TD | |
335 WIDTH="33%" | |
336 ALIGN="left" | |
337 VALIGN="top" | |
338 >SDL_Flip</TD | |
339 ><TD | |
340 WIDTH="34%" | |
341 ALIGN="center" | |
342 VALIGN="top" | |
343 ><A | |
344 HREF="video.html" | |
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
345 ACCESSKEY="U" |
0 | 346 >Up</A |
347 ></TD | |
348 ><TD | |
349 WIDTH="33%" | |
350 ALIGN="right" | |
351 VALIGN="top" | |
352 >SDL_SetPalette</TD | |
353 ></TR | |
354 ></TABLE | |
355 ></DIV | |
356 ></BODY | |
357 ></HTML | |
358 > |