Mercurial > sdl-ios-xcode
annotate docs/html/sdlwasinit.html @ 4106:12bb6311fd5d SDL-1.2
Hans de Goede fixed bug #495
When running boswars: http://www.boswars.org/ on a machine with intel
integrathed graphics it crashes when it tries to play the initial theora
splashscreen video:
X Error of failed request: BadAlloc (insufficient resources for operation)
Major opcode of failed request: 140 (XVideo)
Minor opcode of failed request: 19 ()
Serial number of failed request: 25
Current serial number in output stream: 26
boswars: xcb_xlib.c:41: xcb_xlib_lock: Assertion `!c->xlib.lock' failed.
Aborted
I recognized this problem from a few years back, when I encountered it while
working on the Xv blitter for xmame. The problem is that for some reason
creation the Xvport and XvImage succeeds, and failure (lack of resources / hw
capability?) is only indicated during the first XvPut[Shm]Image. I've written a
patch for SDL using the work around for this I developed for xmame (and which
is still used successfully in xmame after many years of usage).
I'll admit it isn't very pretty, but after investigating several possibilities
this was the best option, any other fixes would need changes to the SDL api and
abi.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 29 Dec 2007 02:23:48 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_WasInit</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="General" | |
| 14 HREF="general.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="SDL_Quit" | |
| 17 HREF="sdlquit.html"><LINK | |
| 18 REL="NEXT" | |
|
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19 TITLE="SDL_GetError" |
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20 HREF="sdlgeterror.html"></HEAD |
| 0 | 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="sdlquit.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 | |
|
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62 HREF="sdlgeterror.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="SDLWASINIT" | |
|
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74 ></A |
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75 >SDL_WasInit</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN617" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_WasInit -- Check which subsystems are initialized</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSYNOPSISDIV" | |
| 86 ><A | |
|
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87 NAME="AEN620" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Synopsis</H2 | |
| 91 ><DIV | |
| 92 CLASS="FUNCSYNOPSIS" | |
| 93 ><A | |
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94 NAME="AEN621" |
| 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 >Uint32 <B | |
| 106 CLASS="FSFUNC" | |
| 107 >SDL_WasInit</B | |
| 108 ></CODE | |
| 109 >(Uint32 flags);</CODE | |
| 110 ></P | |
| 111 ><P | |
| 112 ></P | |
| 113 ></DIV | |
| 114 ></DIV | |
| 115 ><DIV | |
| 116 CLASS="REFSECT1" | |
| 117 ><A | |
|
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118 NAME="AEN627" |
| 0 | 119 ></A |
| 120 ><H2 | |
| 121 >Description</H2 | |
| 122 ><P | |
| 123 ><TT | |
| 124 CLASS="FUNCTION" | |
| 125 >SDL_WasInit</TT | |
| 126 > allows you to see which SDL subsytems have been <A | |
| 127 HREF="sdlinit.html" | |
| 128 >initialized</A | |
| 129 >. <TT | |
| 130 CLASS="PARAMETER" | |
| 131 ><I | |
| 132 >flags</I | |
| 133 ></TT | |
| 134 > is a bitwise OR'd combination of the subsystems you wish to check (see <A | |
| 135 HREF="sdlinit.html" | |
| 136 ><TT | |
| 137 CLASS="FUNCTION" | |
| 138 >SDL_Init</TT | |
| 139 ></A | |
| 140 > for a list of subsystem flags).</P | |
| 141 ></DIV | |
| 142 ><DIV | |
| 143 CLASS="REFSECT1" | |
| 144 ><A | |
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145 NAME="AEN635" |
| 0 | 146 ></A |
| 147 ><H2 | |
| 148 >Return Value</H2 | |
| 149 ><P | |
| 150 ><TT | |
| 151 CLASS="FUNCTION" | |
| 152 >SDL_WasInit</TT | |
| 153 > returns a bitwised OR'd combination of the initialized subsystems.</P | |
| 154 ></DIV | |
| 155 ><DIV | |
| 156 CLASS="REFSECT1" | |
| 157 ><A | |
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158 NAME="AEN639" |
| 0 | 159 ></A |
| 160 ><H2 | |
| 161 >Examples</H2 | |
| 162 ><PRE | |
| 163 CLASS="PROGRAMLISTING" | |
| 164 > /* Here are several ways you can use SDL_WasInit() */ | |
| 165 | |
| 166 /* Get init data on all the subsystems */ | |
| 167 Uint32 subsystem_init; | |
| 168 | |
| 169 subsystem_init=SDL_WasInit(SDL_INIT_EVERYTHING); | |
| 170 | |
| 171 if(subsystem_init&SDL_INIT_VIDEO) | |
| 172 printf("Video is initialized.\n"); | |
| 173 else | |
| 174 printf("Video is not initialized.\n"); | |
| 175 | |
| 176 | |
| 177 | |
| 178 /* Just check for one specfic subsystem */ | |
| 179 | |
| 180 if(SDL_WasInit(SDL_INIT_VIDEO)!=0) | |
| 181 printf("Video is initialized.\n"); | |
| 182 else | |
| 183 printf("Video is not initialized.\n"); | |
| 184 | |
| 185 | |
| 186 | |
| 187 | |
| 188 /* Check for two subsystems */ | |
| 189 | |
| 190 Uint32 subsystem_mask=SDL_INIT_VIDEO|SDL_INIT_AUDIO; | |
| 191 | |
| 192 if(SDL_WasInit(subsystem_mask)==subsystem_mask) | |
| 193 printf("Video and Audio initialized.\n"); | |
| 194 else | |
| 195 printf("Video and Audio not initialized.\n"); </PRE | |
| 196 ></DIV | |
| 197 ><DIV | |
| 198 CLASS="REFSECT1" | |
| 199 ><A | |
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200 NAME="AEN642" |
| 0 | 201 ></A |
| 202 ><H2 | |
| 203 >See Also</H2 | |
| 204 ><P | |
| 205 ><A | |
| 206 HREF="sdlinit.html" | |
| 207 ><TT | |
| 208 CLASS="FUNCTION" | |
| 209 >SDL_Init</TT | |
| 210 ></A | |
| 211 >, | |
| 212 <A | |
| 213 HREF="sdlinitsubsystem.html" | |
| 214 ><TT | |
| 215 CLASS="FUNCTION" | |
| 216 >SDL_Subsystem</TT | |
| 217 ></A | |
| 218 ></P | |
| 219 ></DIV | |
| 220 ><DIV | |
| 221 CLASS="NAVFOOTER" | |
| 222 ><HR | |
| 223 ALIGN="LEFT" | |
| 224 WIDTH="100%"><TABLE | |
|
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225 SUMMARY="Footer navigation table" |
| 0 | 226 WIDTH="100%" |
| 227 BORDER="0" | |
| 228 CELLPADDING="0" | |
| 229 CELLSPACING="0" | |
| 230 ><TR | |
| 231 ><TD | |
| 232 WIDTH="33%" | |
| 233 ALIGN="left" | |
| 234 VALIGN="top" | |
| 235 ><A | |
| 236 HREF="sdlquit.html" | |
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237 ACCESSKEY="P" |
| 0 | 238 >Prev</A |
| 239 ></TD | |
| 240 ><TD | |
| 241 WIDTH="34%" | |
| 242 ALIGN="center" | |
| 243 VALIGN="top" | |
| 244 ><A | |
| 245 HREF="index.html" | |
|
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246 ACCESSKEY="H" |
| 0 | 247 >Home</A |
| 248 ></TD | |
| 249 ><TD | |
| 250 WIDTH="33%" | |
| 251 ALIGN="right" | |
| 252 VALIGN="top" | |
| 253 ><A | |
|
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254 HREF="sdlgeterror.html" |
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255 ACCESSKEY="N" |
| 0 | 256 >Next</A |
| 257 ></TD | |
| 258 ></TR | |
| 259 ><TR | |
| 260 ><TD | |
| 261 WIDTH="33%" | |
| 262 ALIGN="left" | |
| 263 VALIGN="top" | |
| 264 >SDL_Quit</TD | |
| 265 ><TD | |
| 266 WIDTH="34%" | |
| 267 ALIGN="center" | |
| 268 VALIGN="top" | |
| 269 ><A | |
| 270 HREF="general.html" | |
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271 ACCESSKEY="U" |
| 0 | 272 >Up</A |
| 273 ></TD | |
| 274 ><TD | |
| 275 WIDTH="33%" | |
| 276 ALIGN="right" | |
| 277 VALIGN="top" | |
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278 >SDL_GetError</TD |
| 0 | 279 ></TR |
| 280 ></TABLE | |
| 281 ></DIV | |
| 282 ></BODY | |
| 283 ></HTML | |
| 284 > |