Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Last modification | View Log | RSS feed

  1. <HTML
  2. ><HEAD
  3. ><TITLE
  4. >SDL_GL_SetAttribute</TITLE
  5. ><META
  6. NAME="GENERATOR"
  7. CONTENT="Modular DocBook HTML Stylesheet Version 1.64
  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
  31. WIDTH="100%"
  32. BORDER="0"
  33. CELLPADDING="0"
  34. CELLSPACING="0"
  35. ><TR
  36. ><TH
  37. COLSPAN="3"
  38. ALIGN="center"
  39. >SDL Library Documentation</TH
  40. ></TR
  41. ><TR
  42. ><TD
  43. WIDTH="10%"
  44. ALIGN="left"
  45. VALIGN="bottom"
  46. ><A
  47. HREF="sdlglgetattribute.html"
  48. >Prev</A
  49. ></TD
  50. ><TD
  51. WIDTH="80%"
  52. ALIGN="center"
  53. VALIGN="bottom"
  54. ></TD
  55. ><TD
  56. WIDTH="10%"
  57. ALIGN="right"
  58. VALIGN="bottom"
  59. ><A
  60. HREF="sdlglswapbuffers.html"
  61. >Next</A
  62. ></TD
  63. ></TR
  64. ></TABLE
  65. ><HR
  66. ALIGN="LEFT"
  67. WIDTH="100%"></DIV
  68. ><H1
  69. ><A
  70. NAME="SDLGLSETATTRIBUTE"
  71. >SDL_GL_SetAttribute</A
  72. ></H1
  73. ><DIV
  74. CLASS="REFNAMEDIV"
  75. ><A
  76. NAME="AEN2323"
  77. ></A
  78. ><H2
  79. >Name</H2
  80. >SDL_GL_SetAttribute&nbsp;--&nbsp;Set a special SDL/OpenGL attribute</DIV
  81. ><DIV
  82. CLASS="REFSYNOPSISDIV"
  83. ><A
  84. NAME="AEN2326"
  85. ></A
  86. ><H2
  87. >Synopsis</H2
  88. ><DIV
  89. CLASS="FUNCSYNOPSIS"
  90. ><A
  91. NAME="AEN2327"
  92. ></A
  93. ><P
  94. ></P
  95. ><PRE
  96. CLASS="FUNCSYNOPSISINFO"
  97. >#include "SDL.h"</PRE
  98. ><P
  99. ><CODE
  100. ><CODE
  101. CLASS="FUNCDEF"
  102. >int <B
  103. CLASS="FSFUNC"
  104. >SDL_GL_SetAttribute</B
  105. ></CODE
  106. >(SDL_GLattr attr, int value);</CODE
  107. ></P
  108. ><P
  109. ></P
  110. ></DIV
  111. ></DIV
  112. ><DIV
  113. CLASS="REFSECT1"
  114. ><A
  115. NAME="AEN2333"
  116. ></A
  117. ><H2
  118. >Description</H2
  119. ><P
  120. >Sets the OpenGL <A
  121. HREF="sdlglattr.html"
  122. >attribute</A
  123. > <TT
  124. CLASS="PARAMETER"
  125. ><I
  126. >attr</I
  127. ></TT
  128. > to <TT
  129. CLASS="PARAMETER"
  130. ><I
  131. >value</I
  132. ></TT
  133. >. The attributes you set don't take effect until after a call to <A
  134. HREF="sdlsetvideomode.html"
  135. ><TT
  136. CLASS="FUNCTION"
  137. >SDL_SetVideoMode</TT
  138. ></A
  139. >. You should use <A
  140. HREF="sdlglgetattribute.html"
  141. ><TT
  142. CLASS="FUNCTION"
  143. >SDL_GL_GetAttribute</TT
  144. ></A
  145. > to check the values after a <TT
  146. CLASS="FUNCTION"
  147. >SDL_SetVideoMode</TT
  148. > call.</P
  149. ></DIV
  150. ><DIV
  151. CLASS="REFSECT1"
  152. ><A
  153. NAME="AEN2344"
  154. ></A
  155. ><H2
  156. >Return Value</H2
  157. ><P
  158. >Returns <SPAN
  159. CLASS="RETURNVALUE"
  160. >0</SPAN
  161. > on success, or <SPAN
  162. CLASS="RETURNVALUE"
  163. >-1</SPAN
  164. > on error.</P
  165. ></DIV
  166. ><DIV
  167. CLASS="REFSECT1"
  168. ><A
  169. NAME="AEN2349"
  170. ></A
  171. ><H2
  172. >Example</H2
  173. ><PRE
  174. CLASS="PROGRAMLISTING"
  175. >SDL_GL_SetAttribute( SDL_GL_RED_SIZE, 5 );
  176. SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, 5 );
  177. SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, 5 );
  178. SDL_GL_SetAttribute( SDL_GL_DEPTH_SIZE, 16 );
  179. SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 );
  180. if ( (screen=SDL_SetVideoMode( 640, 480, 16, SDL_OPENGL )) == NULL ) {
  181.  fprintf(stderr, "Couldn't set GL mode: %s\n", SDL_GetError());
  182.  SDL_Quit();
  183.  return;
  184. }</PRE
  185. ><DIV
  186. CLASS="NOTE"
  187. ><BLOCKQUOTE
  188. CLASS="NOTE"
  189. ><P
  190. ><B
  191. >Note: </B
  192. >The <TT
  193. CLASS="LITERAL"
  194. >SDL_DOUBLEBUF</TT
  195. > 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
  196. ></BLOCKQUOTE
  197. ></DIV
  198. ></DIV
  199. ><DIV
  200. CLASS="REFSECT1"
  201. ><A
  202. NAME="AEN2355"
  203. ></A
  204. ><H2
  205. >See Also</H2
  206. ><P
  207. ><A
  208. HREF="sdlglgetattribute.html"
  209. ><TT
  210. CLASS="FUNCTION"
  211. >SDL_GL_GetAttribute</TT
  212. ></A
  213. >,
  214. <A
  215. HREF="sdlglattr.html"
  216. >GL Attributes</A
  217. ></P
  218. ></DIV
  219. ><DIV
  220. CLASS="NAVFOOTER"
  221. ><HR
  222. ALIGN="LEFT"
  223. WIDTH="100%"><TABLE
  224. WIDTH="100%"
  225. BORDER="0"
  226. CELLPADDING="0"
  227. CELLSPACING="0"
  228. ><TR
  229. ><TD
  230. WIDTH="33%"
  231. ALIGN="left"
  232. VALIGN="top"
  233. ><A
  234. HREF="sdlglgetattribute.html"
  235. >Prev</A
  236. ></TD
  237. ><TD
  238. WIDTH="34%"
  239. ALIGN="center"
  240. VALIGN="top"
  241. ><A
  242. HREF="index.html"
  243. >Home</A
  244. ></TD
  245. ><TD
  246. WIDTH="33%"
  247. ALIGN="right"
  248. VALIGN="top"
  249. ><A
  250. HREF="sdlglswapbuffers.html"
  251. >Next</A
  252. ></TD
  253. ></TR
  254. ><TR
  255. ><TD
  256. WIDTH="33%"
  257. ALIGN="left"
  258. VALIGN="top"
  259. >SDL_GL_GetAttribute</TD
  260. ><TD
  261. WIDTH="34%"
  262. ALIGN="center"
  263. VALIGN="top"
  264. ><A
  265. HREF="video.html"
  266. >Up</A
  267. ></TD
  268. ><TD
  269. WIDTH="33%"
  270. ALIGN="right"
  271. VALIGN="top"
  272. >SDL_GL_SwapBuffers</TD
  273. ></TR
  274. ></TABLE
  275. ></DIV
  276. ></BODY
  277. ></HTML
  278. >