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view docs/html/sdlvideoinfo.html @ 4106:12bb6311fd5d SDL-1.2

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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
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>SDL_VideoInfo</TITLE
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><H1
><A
NAME="SDLVIDEOINFO"
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>SDL_VideoInfo</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN3390"
></A
><H2
>Name</H2
>SDL_VideoInfo&nbsp;--&nbsp;Video Target information</DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3393"
></A
><H2
>Structure Definition</H2
><PRE
CLASS="PROGRAMLISTING"
>typedef struct{
  Uint32 hw_available:1;
  Uint32 wm_available:1;
  Uint32 blit_hw:1;
  Uint32 blit_hw_CC:1;
  Uint32 blit_hw_A:1;
  Uint32 blit_sw:1;
  Uint32 blit_sw_CC:1;
  Uint32 blit_sw_A:1;
  Uint32 blit_fill;
  Uint32 video_mem;
  SDL_PixelFormat *vfmt;
} SDL_VideoInfo;</PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3396"
></A
><H2
>Structure Data</H2
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN3398"
></A
><P
></P
><TABLE
BORDER="0"
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><TBODY
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><TT
CLASS="STRUCTFIELD"
><I
>hw_available</I
></TT
></TD
><TD
ALIGN="LEFT"
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>Is it possible to create hardware surfaces?</TD
></TR
><TR
><TD
ALIGN="LEFT"
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><TT
CLASS="STRUCTFIELD"
><I
>wm_available</I
></TT
></TD
><TD
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>Is there a window manager available</TD
></TR
><TR
><TD
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><TT
CLASS="STRUCTFIELD"
><I
>blit_hw</I
></TT
></TD
><TD
ALIGN="LEFT"
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>Are hardware to hardware blits accelerated?</TD
></TR
><TR
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><TT
CLASS="STRUCTFIELD"
><I
>blit_hw_CC</I
></TT
></TD
><TD
ALIGN="LEFT"
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>Are hardware to hardware colorkey blits accelerated?</TD
></TR
><TR
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><TT
CLASS="STRUCTFIELD"
><I
>blit_hw_A</I
></TT
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><TD
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>Are hardware to hardware alpha blits accelerated?</TD
></TR
><TR
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><TT
CLASS="STRUCTFIELD"
><I
>blit_sw</I
></TT
></TD
><TD
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>Are software to hardware blits accelerated?</TD
></TR
><TR
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><TT
CLASS="STRUCTFIELD"
><I
>blit_sw_CC</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Are software to hardware colorkey blits accelerated?</TD
></TR
><TR
><TD
ALIGN="LEFT"
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><TT
CLASS="STRUCTFIELD"
><I
>blit_sw_A</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Are software to hardware alpha blits accelerated?</TD
></TR
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><TT
CLASS="STRUCTFIELD"
><I
>blit_fill</I
></TT
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><TD
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>Are color fills accelerated?</TD
></TR
><TR
><TD
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><TT
CLASS="STRUCTFIELD"
><I
>video_mem</I
></TT
></TD
><TD
ALIGN="LEFT"
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>Total amount of video memory in Kilobytes</TD
></TR
><TR
><TD
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><TT
CLASS="STRUCTFIELD"
><I
>vfmt</I
></TT
></TD
><TD
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><A
HREF="sdlpixelformat.html"
>Pixel format</A
> of the video device</TD
></TR
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><P
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></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3446"
></A
><H2
>Description</H2
><P
>This (read-only) structure is returned by <A
HREF="sdlgetvideoinfo.html"
><TT
CLASS="FUNCTION"
>SDL_GetVideoInfo</TT
></A
>. It contains information on either the 'best' available mode  (if called before <A
HREF="sdlsetvideomode.html"
><TT
CLASS="FUNCTION"
>SDL_SetVideoMode</TT
></A
>) or the current video mode.</P
></DIV
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><A
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><H2
>See Also</H2
><P
><A
HREF="sdlpixelformat.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_PixelFormat</SPAN
></A
>,
<A
HREF="sdlgetvideoinfo.html"
><TT
CLASS="FUNCTION"
>SDL_GetVideoInfo</TT
></A
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