Mercurial > sdl-ios-xcode
annotate docs/html/sdlgetgammaramp.html @ 896:b56dc586a5ef
Date: Tue, 16 Mar 2004 12:40:33 +0000
From: Alan Swanson
Subject: [SDL] [PATCH] Linux joystick evdev axis count fix
The event device configuration under Linux does not check the returned
ioctl value when reading the axis information. This means extra
undefined axes are returned.
Note, in EV_HandleEvents, the default for case EV_ABS is to return any
axis information which is fine as we have already checked for all valid
absolute axes. No new axes should be returned after opening the device.
(Unless, of course, the evdev allows closing and reassigning a new
device while in use and I can't believe that happens.)
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 16 May 2004 22:48:06 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_GetGammaRamp</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_SetGamma" | |
17 HREF="sdlsetgamma.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_SetGammaRamp" | |
20 HREF="sdlsetgammaramp.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="sdlsetgamma.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="sdlsetgammaramp.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="SDLGETGAMMARAMP" | |
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74 ></A |
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75 >SDL_GetGammaRamp</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN1598" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_GetGammaRamp -- Gets the color gamma lookup tables for the display</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN1601" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN1602" |
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_GetGammaRamp</B | |
108 ></CODE | |
109 >(Uint16 *redtable, Uint16 *greentable, Uint16 *bluetable);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN1608" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Gets the gamma translation lookup tables currently used by the display. | |
124 Each table is an array of 256 Uint16 values.</P | |
125 ><P | |
126 >Not all display hardware is able to change gamma.</P | |
127 ></DIV | |
128 ><DIV | |
129 CLASS="REFSECT1" | |
130 ><A | |
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131 NAME="AEN1612" |
0 | 132 ></A |
133 ><H2 | |
134 >Return Value</H2 | |
135 ><P | |
136 >Returns -1 on error.</P | |
137 ></DIV | |
138 ><DIV | |
139 CLASS="REFSECT1" | |
140 ><A | |
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141 NAME="AEN1615" |
0 | 142 ></A |
143 ><H2 | |
144 >See Also</H2 | |
145 ><P | |
146 ><A | |
147 HREF="sdlsetgamma.html" | |
148 >SDL_SetGamma</A | |
149 > | |
150 <A | |
151 HREF="sdlsetgammaramp.html" | |
152 >SDL_SetGammaRamp</A | |
153 ></P | |
154 ></DIV | |
155 ><DIV | |
156 CLASS="NAVFOOTER" | |
157 ><HR | |
158 ALIGN="LEFT" | |
159 WIDTH="100%"><TABLE | |
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160 SUMMARY="Footer navigation table" |
0 | 161 WIDTH="100%" |
162 BORDER="0" | |
163 CELLPADDING="0" | |
164 CELLSPACING="0" | |
165 ><TR | |
166 ><TD | |
167 WIDTH="33%" | |
168 ALIGN="left" | |
169 VALIGN="top" | |
170 ><A | |
171 HREF="sdlsetgamma.html" | |
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172 ACCESSKEY="P" |
0 | 173 >Prev</A |
174 ></TD | |
175 ><TD | |
176 WIDTH="34%" | |
177 ALIGN="center" | |
178 VALIGN="top" | |
179 ><A | |
180 HREF="index.html" | |
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181 ACCESSKEY="H" |
0 | 182 >Home</A |
183 ></TD | |
184 ><TD | |
185 WIDTH="33%" | |
186 ALIGN="right" | |
187 VALIGN="top" | |
188 ><A | |
189 HREF="sdlsetgammaramp.html" | |
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190 ACCESSKEY="N" |
0 | 191 >Next</A |
192 ></TD | |
193 ></TR | |
194 ><TR | |
195 ><TD | |
196 WIDTH="33%" | |
197 ALIGN="left" | |
198 VALIGN="top" | |
199 >SDL_SetGamma</TD | |
200 ><TD | |
201 WIDTH="34%" | |
202 ALIGN="center" | |
203 VALIGN="top" | |
204 ><A | |
205 HREF="video.html" | |
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206 ACCESSKEY="U" |
0 | 207 >Up</A |
208 ></TD | |
209 ><TD | |
210 WIDTH="33%" | |
211 ALIGN="right" | |
212 VALIGN="top" | |
213 >SDL_SetGammaRamp</TD | |
214 ></TR | |
215 ></TABLE | |
216 ></DIV | |
217 ></BODY | |
218 ></HTML | |
219 > |