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Simple Directmedia Layer
890 commits 1 branch 28 tags 96 MiB
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Sam Lantinga 4905cd9c09 Fixed bug 3340 - SDL_BlitScaled causes access violation in some cases. 
Simon Hug

The SDL_BlitScaled function runs into an access violation for specific blit coordinates and surface sizes. The attached testcase blits a 800x600 surface to a 1280x720 surface at the coordinates -640,-345 scaled to 1280x720. The blit function that moves the data then runs over and reads after the pixel data from the src surface causing an access violation.

I can't say where exactly it goes wrong, but I think it could have something to do with the rounding in SDL_UpperBlitScaled. final_src.y is 288 and final_src.h is 313. Together that's 601, which I believe is one too much, but I just don't know the code enough to make sure that's the problem.

Sylvain

I think this patch fix the issue, but maybe it's worth re-writing "SDL_UpperBlitScaled" using SDL_FRect.
2016-11-30 22:06:05 -08:00
acinclude Fixed bug 3481 - Configure fails to detect dynamic library support on powerpc64le 2016-11-06 20:26:48 -08:00
android-project Fixed bug 3444 - Android-TV: no more handling of back button on remote 2016-10-17 22:09:22 -07:00
build-scripts checker-buildbot.sh: Disable warnings that aren't explicitly static analysis. 2016-11-25 14:16:27 -05:00
cmake cmake: Now generates Wayland protocol source bits like the configure script. 2016-10-11 16:36:40 -04:00
debian Added fcitx-libs-dev to debian build dependencies, for Fcitx IME support 2016-11-28 08:05:45 -08:00
docs Fixed outdated info in README. 2016-10-30 21:01:33 +01:00
include Updated documentation in header file. 2016-11-30 23:31:36 +01:00
src Fixed bug 3340 - SDL_BlitScaled causes access violation in some cases. 2016-11-30 22:06:05 -08:00
test Added an API to iterate over game controller mappings 2016-11-29 06:36:57 -08:00
VisualC Fixed compiler option warning for 64-bit builds on Visual Studio 2008 2016-10-14 08:56:04 -07:00
VisualC-WinRT Merge audio capture work back into the mainline. 2016-08-28 13:36:13 -04:00
visualtest Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
Xcode Build SDL as universal binary 2016-10-12 18:46:17 -07:00
Xcode-iOS iOS: Updated demo README. 2016-10-09 20:30:49 +02:00
.hgignore wayland: Build own version of core protocol 2016-06-23 18:39:05 +08:00
Android.mk Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
autogen.sh Fix running autogen.sh out-of-tree 2016-10-01 10:39:03 -07:00
BUGS.txt BUGS.txt: Bugzilla supports SSL; changed link to https:// ... 2016-08-01 13:36:43 -04:00
cmake_uninstall.cmake.in Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
CMakeLists.txt cpuinfo: first attempt at SDL_HasNEON() implementation. 2016-11-17 01:15:16 -05:00
configure Avoid conflicts with multiple versions of udev by first trying the library that is linked with the executable, if any, and then picking the one that is in the build environment. 2016-11-29 05:34:20 -08:00
configure.in Avoid conflicts with multiple versions of udev by first trying the library that is linked with the executable, if any, and then picking the one that is in the build environment. 2016-11-29 05:34:20 -08:00
COPYING.txt Updated copyright to 2016 2016-01-02 10:10:34 -08:00
CREDITS.txt Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
INSTALL.txt Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
Makefile.in wayland: Build own version of core protocol 2016-06-23 18:39:05 +08:00
Makefile.minimal Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
Makefile.pandora Pandora: Fixed referring to no more existing atomic source file in Makefile. 2016-07-19 21:01:13 +02:00
Makefile.psp PSP: Added missing object for generic TLS to Makefile. 2016-02-13 17:34:14 +01:00
Makefile.wiz Pandora: Updated SDL version in Makefile. 2016-07-19 21:01:30 +02:00
README-SDL.txt Another commit to test revision control. 2016-03-08 20:26:26 -05:00
README.txt Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
sdl2-config.cmake.in Applied Ubuntu patch bug_822210_fix_sdl2-config.cmake_whitespace.patch 2016-10-07 15:08:37 -07:00
sdl2-config.in Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
sdl2.m4 Fixed bug 3429 - Update AM_PATH_SDL2() to also check for SDL2.framework 2016-09-29 16:37:08 -07:00
sdl2.pc.in Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
SDL2.spec.in Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
TODO.txt Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
VisualC.html Fixed two typos in documentation. 2016-01-12 22:23:53 +01:00
WhatsNew.txt Added note for David Carlier's work on OpenBSD 2016-10-12 18:57:12 -07:00

README.txt 

                         Simple DirectMedia Layer

                                  (SDL)

                                Version 2.0

---
http://www.libsdl.org/

Simple DirectMedia Layer is a cross-platform development library designed
to provide low level access to audio, keyboard, mouse, joystick, and graphics
hardware via OpenGL and Direct3D. It is used by video playback software,
emulators, and popular games including Valve's award winning catalog
and many Humble Bundle games.

More extensive documentation is available in the docs directory, starting
with README.md

Enjoy!
	Sam Lantinga				(slouken@libsdl.org)