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Sam Lantinga d3c21666de gamepad: Clarify range and direction of axes 
It would be easy to assume that all APIs that reference
SDL_JOYSTICK_AXIS_MAX work the same way, but they do not: triggers
generally use the full signed 16-bit range in the lower-level joystick
API, but are normalized to be non-negative by the higher-level gamepad
API.

We also never said explicitly which direction is positive here.
Experimentally, it's right (X), down (Y), and pressed (triggers).

Resolves: https://github.com/libsdl-org/SDL/issues/8793
Signed-off-by: Simon McVittie <smcv@collabora.com>

(cherry picked from commit 059fb560ba)
2024-01-08 09:48:04 -08:00
.github
ci: re-enable Intel compilers on ci
2023-11-09 18:07:10 +01:00
acinclude
autotools: revised and silenced esound detection a bit.
2022-09-24 20:01:04 +03:00
android-project
Added a runtime check for BLUETOOTH_CONNECT in addition to BLUETOOTH (thanks @perepujal!)
2023-12-24 06:51:48 -08:00
android-project-ant
Added the old ant Android build project structure
2017-10-28 12:11:25 -07:00
build-scripts
Updated copyright for 2024
2024-01-01 13:19:49 -08:00
cmake
cmake: check if CMP0087 exists before setting it (#8613)
2023-11-25 21:42:55 +00:00
docs
cmake: fix uses of undefined macro identifiers (-Wundef)
2023-11-17 03:06:26 +00:00
include
gamepad: Clarify range and direction of axes
2024-01-08 09:48:04 -08:00
mingw/pkg-support/cmake
cmake: else() does not need an argument
2022-10-20 13:29:35 +02:00
src
Updated documentation for SDL_HINT_SHUTDOWN_DBUS_ON_QUIT
2024-01-07 14:24:56 -08:00
test
Updated copyright for 2024
2024-01-01 13:19:49 -08:00
VisualC
Added Steam Input API support for game controllers
2023-12-20 13:29:57 -08:00
VisualC-GDK
Updated copyright for 2024
2024-01-01 13:19:49 -08:00
VisualC-WinRT
Added Steam Input API support for game controllers
2023-12-20 13:29:57 -08:00
visualtest
Remove unneeded semicolon
2022-11-17 10:43:45 +01:00
wayland-protocols
Support wayland fractional scale protocol
2022-11-29 16:37:02 -05:00
Xcode
Updated copyright for 2024
2024-01-01 13:19:49 -08:00
Xcode-iOS/Demos
[SDL2] pointer boolean (#8523)
2023-11-10 06:30:56 -08:00
.clang-format
Commented out syntax that causes Visual Studio 2019 to complain on every edit
2022-12-02 00:43:46 -08:00
.editorconfig
editorconfig: remove trailing whitespace in source code
2022-12-26 10:34:45 -08:00
.gitignore
cmake: use FindALSA.cmake to find ALSA library
2022-12-11 23:23:45 +01:00
.wikiheaders-options
wikiheaders: Bridge README files in the docs directory to wiki.
2023-02-28 11:46:46 -05:00
Android.mk
Fixed building with the 16.1.4479499 Android toolchain
2023-06-03 23:55:56 -07:00
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
Use common generic syscond for platforms with no cond implementation
2023-12-24 06:35:59 -08:00
configure
autotools: fix actually wrong use of AC_MSG_RESULT
2023-11-24 14:37:40 +03:00
configure.ac
autotools: fix actually wrong use of AC_MSG_RESULT
2023-11-24 14:37:40 +03:00
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 2024
2024-01-01 13:19:49 -08:00
Makefile.in
added missing FGREP to Makefile.in. fixed syntax. regenerated configure.
2022-11-24 17:00:20 +03:00
Makefile.minimal
Split up CFLAGS construction so it can be overridden
2023-03-29 07:26:34 -07:00
Makefile.os2
Makefile.os2: -DSDL_USE_LIBICONV to fix linkage for GNU libiconv option
2023-12-21 08:55:04 +03:00
Makefile.pandora
more fixes to standalone makefiles.
2021-11-13 21:56:20 +03:00
Makefile.w32
fix os/2 and watcom builds after commit 7bb0e839a6
2023-12-21 01:11:24 +03:00
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: allow users of sdl2-config.cmake to not add -mwindows to the link options
2023-04-18 14:10:12 -04:00
sdl2-config.in
Revert "sdl2-config.in: Deprecate sdl2-config"
2022-11-18 06:53:13 -08:00
sdl2.m4
sdl2.m4: Call $PKG_CONFIG rather than hard-coding pkg-config
2024-01-01 08:27:02 -08:00
sdl2.pc.in
cmake: use FindALSA.cmake to find ALSA library
2022-12-11 23:23:45 +01:00
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
cmake: use FindALSA.cmake to find ALSA library
2022-12-11 23:23:45 +01:00
TODO.txt
Fixed up legacy MoinMoin URLs at wiki.libsdl.org
2021-04-01 12:20:33 -04:00
WhatsNew.txt
Added patch note for SDL_GDKGetDefaultUser()
2023-11-02 09:59:25 -07:00

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)

Description
Simple Directmedia Layer
sdlsdl2sdl3
Readme 192 MiB
Languages
C 86.4%
C++ 5.8%
Objective-C 3.4%
CMake 1.6%
Perl 0.8%
Other 1.7%