view include/SDL_quit.h @ 1240:3b8a43c428bb

From Bug #36: There are a couple of issues with the selection of Altivec alpha-blitting routines in CalculateAlphaBlit() in src/video/SDL_Blit_A.c. 1) There's no check for the presence of Altivec when checking if the Blit32to565PixelAlphaAltivec() routine can be selected. 2) Altivec cannot be used in video memory, and there's no check if the destination surface is a hardware surface. (Alpha-blitting to a hardware surface with GPU support is a bad idea, but somebody's bound to do it anyway.) Patch to fix these attached.
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 08 Jan 2006 21:18:15 +0000
parents b8d311d90021
children c9b51268668f
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2004 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    slouken@libsdl.org
*/

#ifdef SAVE_RCSID
static char rcsid =
 "@(#) $Id$";
#endif

/* Include file for SDL quit event handling */

#ifndef _SDL_quit_h
#define _SDL_quit_h

/* 
  An SDL_QUITEVENT is generated when the user tries to close the application
  window.  If it is ignored or filtered out, the window will remain open.
  If it is not ignored or filtered, it is queued normally and the window
  is allowed to close.  When the window is closed, screen updates will 
  complete, but have no effect.

  SDL_Init() installs signal handlers for SIGINT (keyboard interrupt)
  and SIGTERM (system termination request), if handlers do not already
  exist, that generate SDL_QUITEVENT events as well.  There is no way
  to determine the cause of an SDL_QUITEVENT, but setting a signal
  handler in your application will override the default generation of
  quit events for that signal.
*/

/* There are no functions directly affecting the quit event */
#define SDL_QuitRequested() \
        (SDL_PumpEvents(), SDL_PeepEvents(NULL,0,SDL_PEEKEVENT,SDL_QUITMASK))

#endif /* _SDL_quit_h */