Mercurial > sdl-ios-xcode
annotate docs/html/sdlglsetattribute.html @ 2884:9dde605c7540
Date: Fri, 19 Dec 2008 20:17:35 +0100
From: Couriersud
Subject: Re: Aw: Experience using SDL1.3 in sdlmame/Proposal for api additions
> For consistency you'd probably want:
> SDL_SetRenderDrawColor(Uint8 r, Uint8 g, Uint8 b, Uint8 a);
> SDL_SetRenderDrawBlendMode(SDL_BlendMode blendMode);
> SDL_RenderLine(int x1, int y1, int x2, int y2);
> SDL_RenderFill(SDL_Rect *rect);
>
> You probably also want to add API functions query the current state.
>
I have implemented the above api for the opengl, x11, directfb and
software renderers. I have also renamed *TEXTUREBLENDMODE* constants to
BLENDMODE*. The unix build compiles. The windows renderer still needs to
be updated, but I have no windows development machine at hand. Have a
look at the x11 renderer for a sample.
Vector games now run at 90% both on opengl and directfb in comparison to
sdlmame's own opengl renderer. The same applies to raster games.
The diff also includes
a) Changed XDrawRect to XFillRect in x11 renderer
b) A number of changes to fix blending and modulation issues in the
directfb renderer.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sat, 20 Dec 2008 12:00:00 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_GL_SetAttribute</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_GetAttribute" | |
17 HREF="sdlglgetattribute.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_GL_SwapBuffers" | |
20 HREF="sdlglswapbuffers.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="sdlglgetattribute.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="sdlglswapbuffers.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="SDLGLSETATTRIBUTE" | |
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74 ></A |
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75 >SDL_GL_SetAttribute</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN2742" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_GL_SetAttribute -- Set a special SDL/OpenGL attribute</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN2745" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN2746" |
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_SetAttribute</B | |
108 ></CODE | |
109 >(SDL_GLattr 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="AEN2752" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Sets the OpenGL <A | |
124 HREF="sdlglattr.html" | |
125 >attribute</A | |
126 > <TT | |
127 CLASS="PARAMETER" | |
128 ><I | |
129 >attr</I | |
130 ></TT | |
131 > to <TT | |
132 CLASS="PARAMETER" | |
133 ><I | |
134 >value</I | |
135 ></TT | |
136 >. The attributes you set don't take effect until after a call to <A | |
137 HREF="sdlsetvideomode.html" | |
138 ><TT | |
139 CLASS="FUNCTION" | |
140 >SDL_SetVideoMode</TT | |
141 ></A | |
142 >. You should use <A | |
143 HREF="sdlglgetattribute.html" | |
144 ><TT | |
145 CLASS="FUNCTION" | |
146 >SDL_GL_GetAttribute</TT | |
147 ></A | |
148 > to check the values after a <TT | |
149 CLASS="FUNCTION" | |
150 >SDL_SetVideoMode</TT | |
151 > call.</P | |
152 ></DIV | |
153 ><DIV | |
154 CLASS="REFSECT1" | |
155 ><A | |
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156 NAME="AEN2763" |
0 | 157 ></A |
158 ><H2 | |
159 >Return Value</H2 | |
160 ><P | |
161 >Returns <SPAN | |
162 CLASS="RETURNVALUE" | |
163 >0</SPAN | |
164 > on success, or <SPAN | |
165 CLASS="RETURNVALUE" | |
166 >-1</SPAN | |
167 > on error.</P | |
168 ></DIV | |
169 ><DIV | |
170 CLASS="REFSECT1" | |
171 ><A | |
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172 NAME="AEN2768" |
0 | 173 ></A |
174 ><H2 | |
175 >Example</H2 | |
176 ><PRE | |
177 CLASS="PROGRAMLISTING" | |
178 >SDL_GL_SetAttribute( SDL_GL_RED_SIZE, 5 ); | |
179 SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, 5 ); | |
180 SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, 5 ); | |
181 SDL_GL_SetAttribute( SDL_GL_DEPTH_SIZE, 16 ); | |
182 SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 ); | |
183 if ( (screen=SDL_SetVideoMode( 640, 480, 16, SDL_OPENGL )) == NULL ) { | |
184 fprintf(stderr, "Couldn't set GL mode: %s\n", SDL_GetError()); | |
185 SDL_Quit(); | |
186 return; | |
187 }</PRE | |
188 ><DIV | |
189 CLASS="NOTE" | |
190 ><BLOCKQUOTE | |
191 CLASS="NOTE" | |
192 ><P | |
193 ><B | |
194 >Note: </B | |
195 >The <TT | |
196 CLASS="LITERAL" | |
197 >SDL_DOUBLEBUF</TT | |
198 > flag is not required to enable double buffering when setting an OpenGL video mode. Double buffering is enabled or disabled using the SDL_GL_DOUBLEBUFFER attribute.</P | |
199 ></BLOCKQUOTE | |
200 ></DIV | |
201 ></DIV | |
202 ><DIV | |
203 CLASS="REFSECT1" | |
204 ><A | |
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205 NAME="AEN2774" |
0 | 206 ></A |
207 ><H2 | |
208 >See Also</H2 | |
209 ><P | |
210 ><A | |
211 HREF="sdlglgetattribute.html" | |
212 ><TT | |
213 CLASS="FUNCTION" | |
214 >SDL_GL_GetAttribute</TT | |
215 ></A | |
216 >, | |
217 <A | |
218 HREF="sdlglattr.html" | |
219 >GL Attributes</A | |
220 ></P | |
221 ></DIV | |
222 ><DIV | |
223 CLASS="NAVFOOTER" | |
224 ><HR | |
225 ALIGN="LEFT" | |
226 WIDTH="100%"><TABLE | |
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227 SUMMARY="Footer navigation table" |
0 | 228 WIDTH="100%" |
229 BORDER="0" | |
230 CELLPADDING="0" | |
231 CELLSPACING="0" | |
232 ><TR | |
233 ><TD | |
234 WIDTH="33%" | |
235 ALIGN="left" | |
236 VALIGN="top" | |
237 ><A | |
238 HREF="sdlglgetattribute.html" | |
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239 ACCESSKEY="P" |
0 | 240 >Prev</A |
241 ></TD | |
242 ><TD | |
243 WIDTH="34%" | |
244 ALIGN="center" | |
245 VALIGN="top" | |
246 ><A | |
247 HREF="index.html" | |
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248 ACCESSKEY="H" |
0 | 249 >Home</A |
250 ></TD | |
251 ><TD | |
252 WIDTH="33%" | |
253 ALIGN="right" | |
254 VALIGN="top" | |
255 ><A | |
256 HREF="sdlglswapbuffers.html" | |
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257 ACCESSKEY="N" |
0 | 258 >Next</A |
259 ></TD | |
260 ></TR | |
261 ><TR | |
262 ><TD | |
263 WIDTH="33%" | |
264 ALIGN="left" | |
265 VALIGN="top" | |
266 >SDL_GL_GetAttribute</TD | |
267 ><TD | |
268 WIDTH="34%" | |
269 ALIGN="center" | |
270 VALIGN="top" | |
271 ><A | |
272 HREF="video.html" | |
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273 ACCESSKEY="U" |
0 | 274 >Up</A |
275 ></TD | |
276 ><TD | |
277 WIDTH="33%" | |
278 ALIGN="right" | |
279 VALIGN="top" | |
280 >SDL_GL_SwapBuffers</TD | |
281 ></TR | |
282 ></TABLE | |
283 ></DIV | |
284 ></BODY | |
285 ></HTML | |
286 > |