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annotate docs/html/sdlglgetattribute.html @ 1257:448a9a64537b
[PATCH] SDL_GetVideoMode() does not find best mode, part 2
Following commit 1.51, I come accross a problem when SDL must choose between
several video modes that could suit the one asked.
If I ask 320x240 with this list:
768x480 768x240 640x400 640x200 384x480 384x240 320x400 320x200
The smallest selectables modes are 384x240 and 320x400. And SDL choose the later
in this list, but 384x240 is more suitable. So I added a check to compare
the pixel count (surface) of modes, and select the one which has the smallest
pixel count.
In my example, 384x240 has 92160 pixels, and 320x400 has 128000 pixels. So now
SDL will choose 384x240 for the asked 320x240 mode.
author | Patrice Mandin <patmandin@gmail.com> |
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date | Thu, 19 Jan 2006 21:28:52 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_GL_GetAttribute</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_GL_GetProcAddress" | |
17 HREF="sdlglgetprocaddress.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_GL_SetAttribute" | |
20 HREF="sdlglsetattribute.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="sdlglgetprocaddress.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="sdlglsetattribute.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="SDLGLGETATTRIBUTE" | |
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74 ></A |
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75 >SDL_GL_GetAttribute</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN2708" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_GL_GetAttribute -- Get the value of a special SDL/OpenGL attribute</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN2711" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN2712" |
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_GL_GetAttribute</B | |
108 ></CODE | |
109 >(SDLGLattr attr, int *value);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN2718" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Places the value of the SDL/OpenGL <A | |
124 HREF="sdlglattr.html" | |
125 >attribute</A | |
126 > <TT | |
127 CLASS="PARAMETER" | |
128 ><I | |
129 >attr</I | |
130 ></TT | |
131 > into <TT | |
132 CLASS="PARAMETER" | |
133 ><I | |
134 >value</I | |
135 ></TT | |
136 >. This is useful after a call to <A | |
137 HREF="sdlsetvideomode.html" | |
138 ><TT | |
139 CLASS="FUNCTION" | |
140 >SDL_SetVideoMode</TT | |
141 ></A | |
142 > to check whether your attributes have been <A | |
143 HREF="sdlglsetattribute.html" | |
144 >set</A | |
145 > as you expected.</P | |
146 ></DIV | |
147 ><DIV | |
148 CLASS="REFSECT1" | |
149 ><A | |
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150 NAME="AEN2727" |
0 | 151 ></A |
152 ><H2 | |
153 >Return Value</H2 | |
154 ><P | |
155 >Returns <SPAN | |
156 CLASS="RETURNVALUE" | |
157 >0</SPAN | |
158 > on success, or <SPAN | |
159 CLASS="RETURNVALUE" | |
160 >-1</SPAN | |
161 > on an error.</P | |
162 ></DIV | |
163 ><DIV | |
164 CLASS="REFSECT1" | |
165 ><A | |
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166 NAME="AEN2732" |
0 | 167 ></A |
168 ><H2 | |
169 >See Also</H2 | |
170 ><P | |
171 ><A | |
172 HREF="sdlglsetattribute.html" | |
173 ><TT | |
174 CLASS="FUNCTION" | |
175 >SDL_GL_SetAttribute</TT | |
176 ></A | |
177 >, | |
178 <A | |
179 HREF="sdlglattr.html" | |
180 >GL Attributes</A | |
181 ></P | |
182 ></DIV | |
183 ><DIV | |
184 CLASS="NAVFOOTER" | |
185 ><HR | |
186 ALIGN="LEFT" | |
187 WIDTH="100%"><TABLE | |
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188 SUMMARY="Footer navigation table" |
0 | 189 WIDTH="100%" |
190 BORDER="0" | |
191 CELLPADDING="0" | |
192 CELLSPACING="0" | |
193 ><TR | |
194 ><TD | |
195 WIDTH="33%" | |
196 ALIGN="left" | |
197 VALIGN="top" | |
198 ><A | |
199 HREF="sdlglgetprocaddress.html" | |
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200 ACCESSKEY="P" |
0 | 201 >Prev</A |
202 ></TD | |
203 ><TD | |
204 WIDTH="34%" | |
205 ALIGN="center" | |
206 VALIGN="top" | |
207 ><A | |
208 HREF="index.html" | |
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209 ACCESSKEY="H" |
0 | 210 >Home</A |
211 ></TD | |
212 ><TD | |
213 WIDTH="33%" | |
214 ALIGN="right" | |
215 VALIGN="top" | |
216 ><A | |
217 HREF="sdlglsetattribute.html" | |
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218 ACCESSKEY="N" |
0 | 219 >Next</A |
220 ></TD | |
221 ></TR | |
222 ><TR | |
223 ><TD | |
224 WIDTH="33%" | |
225 ALIGN="left" | |
226 VALIGN="top" | |
227 >SDL_GL_GetProcAddress</TD | |
228 ><TD | |
229 WIDTH="34%" | |
230 ALIGN="center" | |
231 VALIGN="top" | |
232 ><A | |
233 HREF="video.html" | |
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234 ACCESSKEY="U" |
0 | 235 >Up</A |
236 ></TD | |
237 ><TD | |
238 WIDTH="33%" | |
239 ALIGN="right" | |
240 VALIGN="top" | |
241 >SDL_GL_SetAttribute</TD | |
242 ></TR | |
243 ></TABLE | |
244 ></DIV | |
245 ></BODY | |
246 ></HTML | |
247 > |