Mercurial > sdl-ios-xcode
view docs/html/sdlgetmodstate.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 |
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<HTML ><HEAD ><TITLE >SDL_GetModState</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="SDL Library Documentation" HREF="index.html"><LINK REL="UP" TITLE="Event Functions." HREF="eventfunctions.html"><LINK REL="PREVIOUS" TITLE="SDL_GetKeyState" HREF="sdlgetkeystate.html"><LINK REL="NEXT" TITLE="SDL_SetModState" HREF="sdlsetmodstate.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFF8DC" TEXT="#000000" LINK="#0000ee" VLINK="#551a8b" ALINK="#ff0000" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >SDL Library Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="sdlgetkeystate.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdlsetmodstate.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLGETMODSTATE" ></A >SDL_GetModState</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN5721" ></A ><H2 >Name</H2 >SDL_GetModState -- Get the state of modifier keys.</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN5724" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN5725" ></A ><P ></P ><PRE CLASS="FUNCSYNOPSISINFO" >#include "SDL.h"</PRE ><P ><CODE ><CODE CLASS="FUNCDEF" >SDLMod <B CLASS="FSFUNC" >SDL_GetModState</B ></CODE >(void);</CODE ></P ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN5731" ></A ><H2 >Description</H2 ><P >Returns the current state of the modifier keys (CTRL, ALT, etc.).</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN5734" ></A ><H2 >Return Value</H2 ><P >The return value can be an OR'd combination of the SDLMod enum.</P ><P ><A NAME="AEN5738" ></A ><BLOCKQUOTE CLASS="BLOCKQUOTE" ><P ><B >SDLMod</B ></P ><PRE CLASS="PROGRAMLISTING" >typedef enum { KMOD_NONE = 0x0000, KMOD_LSHIFT= 0x0001, KMOD_RSHIFT= 0x0002, KMOD_LCTRL = 0x0040, KMOD_RCTRL = 0x0080, KMOD_LALT = 0x0100, KMOD_RALT = 0x0200, KMOD_LMETA = 0x0400, KMOD_RMETA = 0x0800, KMOD_NUM = 0x1000, KMOD_CAPS = 0x2000, KMOD_MODE = 0x4000, } SDLMod;</PRE ></BLOCKQUOTE > SDL also defines the following symbols for convenience: <A NAME="AEN5741" ></A ><BLOCKQUOTE CLASS="BLOCKQUOTE" ><PRE CLASS="PROGRAMLISTING" >#define KMOD_CTRL (KMOD_LCTRL|KMOD_RCTRL) #define KMOD_SHIFT (KMOD_LSHIFT|KMOD_RSHIFT) #define KMOD_ALT (KMOD_LALT|KMOD_RALT) #define KMOD_META (KMOD_LMETA|KMOD_RMETA)</PRE ></BLOCKQUOTE ></P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN5743" ></A ><H2 >See Also</H2 ><P ><A HREF="sdlgetkeystate.html" ><TT CLASS="FUNCTION" >SDL_GetKeyState</TT ></A ></P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sdlgetkeystate.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sdlsetmodstate.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDL_GetKeyState</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="eventfunctions.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_SetModState</TD ></TR ></TABLE ></DIV ></BODY ></HTML >