Mercurial > sdl-ios-xcode
annotate src/events/SDL_expose.c @ 940:bb1588ebe47b
Date: Sat, 10 Jul 2004 21:02:33 +0200
From: "Philippe Plantier (ayin)"
Subject: [SDL] Problems allocating large surfaces
There are problems when allocating large surfaces using SDL_CreateRGBSurface.
When, for example, we try to allocate a surface wider than 16384 pixels,
the calculation of the pitch overflows; this leads to a surface that
has the w and h flags correctly set, but whose "pixels" buffer is too
small. That may lead to heap corruption.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 21 Aug 2004 05:29:45 +0000 |
| parents | b8d311d90021 |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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b8d311d90021
Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
parents:
297
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changeset
|
3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* Refresh event handling code for SDL */ | |
| 29 | |
| 30 #include "SDL_events.h" | |
| 31 #include "SDL_events_c.h" | |
| 32 | |
| 33 | |
| 34 /* This is global for SDL_eventloop.c */ | |
| 35 int SDL_PrivateExpose(void) | |
| 36 { | |
| 37 int posted; | |
| 38 SDL_Event events[32]; | |
| 39 | |
| 40 /* Pull out all old refresh events */ | |
| 41 SDL_PeepEvents(events, sizeof(events)/sizeof(events[0]), | |
| 42 SDL_GETEVENT, SDL_VIDEOEXPOSEMASK); | |
| 43 | |
| 44 /* Post the event, if desired */ | |
| 45 posted = 0; | |
| 46 if ( SDL_ProcessEvents[SDL_VIDEOEXPOSE] == SDL_ENABLE ) { | |
| 47 SDL_Event event; | |
| 48 event.type = SDL_VIDEOEXPOSE; | |
| 49 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { | |
| 50 posted = 1; | |
| 51 SDL_PushEvent(&event); | |
| 52 } | |
| 53 } | |
| 54 return(posted); | |
| 55 } |