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Simple Directmedia Layer
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diddily 1e492b2f6d Improve behavior of SDL_events_need_periodic_poll() and SDL_events_need_polling() 
SDL_events_need_periodic_poll() and SDL_events_need_polling() are intended to allow the event loop to update joysticks and/or sensors if needed, however those systems only update when the SDL_update_joysticks and/or SDL_update_sensors variables are true. This change brings the behavior of these functions in line with if work will actually need to be performed.

This change allows the hints for AUTO_UPDATE to influence the polling behavior of the event loop such that an app can choose to update joysticks/sensors itself and avoid the expense of constantly sleeping and waking the event loop. Additionally in makes these functions marginally faster in some situations by not searching the active events.
2022-07-25 09:00:31 -07:00
.github ci: don't use ANDROID_NDK_HOME environment variable in Android workflow 2022-07-25 15:08:33 +02:00
acinclude imported two libtool mainstream commits 28fbcb6a and b55b1cc8 2022-03-16 17:15:20 +03:00
android-project Added support for the 8BitDo Ultimate Wired Controller for Xbox 2022-07-20 11:05:55 -07:00
android-project-ant Added the old ant Android build project structure 2017-10-28 12:11:25 -07:00
build-scripts Revert 6fa7d62 and 856c99e5 2022-07-23 17:29:45 +02:00
cmake cmake: allow cmake re-configuration after installation of x11 library 2022-07-21 18:38:12 +02:00
docs Xbox GDKX support (#5869) 2022-07-01 13:59:14 -07:00
include video: Improve the SDL_WINDOW_ALLOW_HIGHDPI flag documentation 2022-07-22 13:01:57 -04:00
mingw/pkg-support/cmake Fix MinGW SDK redist: sdl2-config.cmake needs to set SDL2_FOUND 2022-06-03 21:05:55 -07:00
src Improve behavior of SDL_events_need_periodic_poll() and SDL_events_need_polling() 2022-07-25 09:00:31 -07:00
test testgamecontroller: Add battery reporting 2022-07-24 15:21:04 -05:00
VisualC Added a utility function to calculate the next power of 2 for a value 2022-07-17 08:31:16 -07:00
VisualC-GDK Added a utility function to calculate the next power of 2 for a value 2022-07-17 08:31:16 -07:00
VisualC-WinRT Added a utility function to calculate the next power of 2 for a value 2022-07-17 08:31:16 -07:00
visualtest remove all unnecessary stuff from visualtest configury. 2021-12-21 20:01:02 +03:00
wayland-protocols video: wayland: Use wp-viewporter for fullscreen with non-native resolutions 2022-03-28 13:18:26 -04:00
Xcode Enable bitcode by default for iOS and tvOS builds 2022-07-22 10:58:32 -07:00
Xcode-iOS Updated iOS build instructions 2021-11-30 12:19:26 -08:00
.clang-format Disable formatting not supported by Visual Studio 2019 2022-05-27 15:29:21 -07:00
.editorconfig Separated controller type data into a C file 2022-06-03 15:03:08 -07:00
.gitignore Xbox GDKX support (#5869) 2022-07-01 13:59:14 -07:00
.wikiheaders-options wikiheaders.pl: changes to make this usable with external projects. 2022-06-15 23:26:24 -04:00
Android.mk mark Android.mk as non-executable 2021-11-12 12:55:28 +03:00
autogen.sh Simplified autogen.sh, thanks to @smcv for the tip 2022-05-05 11:54:24 -07:00
BUGS.txt Cleaned up a few more Bugzilla mentions. 2021-02-12 14:46:49 -05:00
cmake_uninstall.cmake.in Fixed bug 3867 - Can't find install_manifest.txt when running 'uninstall' target 2017-10-12 08:44:45 -07:00
CMakeLists.txt Revert "cmake: don't add -mwindows to link flags in sdl2.pc" 2022-07-23 18:05:35 +02:00
configure Sort libraries by version and pick the shortest symlink (thanks @jpalus!) 2022-07-12 13:00:43 -07:00
configure.ac Sort libraries by version and pick the shortest symlink (thanks @jpalus!) 2022-07-12 13:00:43 -07:00
CREDITS.txt Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
INSTALL.txt INSTALL.txt: Say "macOS" instead of "Mac OS X" in modern times. 2022-03-15 13:07:55 -04:00
LICENSE.txt Updated copyright for 2022 2022-01-03 09:40:21 -08:00
Makefile.in We want to ship the CMake input file, not the generated file 2022-07-11 08:55:49 -07:00
Makefile.minimal build libSDL2_test too with Makefile.minimal 2021-11-14 01:10:32 +03:00
Makefile.os2 Added a utility function to calculate the next power of 2 for a value 2022-07-17 08:31:16 -07:00
Makefile.pandora more fixes to standalone makefiles. 2021-11-13 21:56:20 +03:00
Makefile.w32 Added a utility function to calculate the next power of 2 for a value 2022-07-17 08:31:16 -07:00
README-SDL.txt More HTTPS changes in the documentation. 2017-02-16 16:52:03 -05:00
README.md Update and rename README.txt to README.md 2021-03-20 18:46:37 -04:00
sdl2-config-version.cmake.in Add documentation to autotoo'ls sdl2-config-version.cmake.in 2022-05-31 00:10:55 +02:00
sdl2-config.cmake.in cmake: fix name+location of SDL2.dll in configure generated SDL2::SDL2 target 2022-06-28 23:09:28 +02:00
sdl2-config.in cmake+ci: fix+test sdl2-config + sdl2.pc for all supported platforms 2022-06-23 14:17:38 +02:00
sdl2.m4 acinclude & sdl2.m4 updates: 2020-12-22 17:00:28 +03:00
sdl2.pc.in rename PKG_CONFIG_LIBS_PRIV to PKGCONFIG_LIBS_PRIV 2021-04-14 21:40:50 +03:00
SDL2.spec.in license: Fixed references to COPYING.txt that are now LICENSE.txt. 2021-02-18 11:07:26 -05:00
SDL2Config.cmake.in ci: Test cmake build script on Android 2022-06-15 11:11:49 -07:00
TODO.txt Fixed up legacy MoinMoin URLs at wiki.libsdl.org 2021-04-01 12:20:33 -04:00
WhatsNew.txt better wording. 2022-07-22 20:37:28 +03:00

README.md

Simple DirectMedia Layer (SDL) Version 2.0

https://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)