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Simple DirectMedia Layer https://libsdl.org
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Cameron Gutman 509a36db16 atomic: Fix missing full memory barrier on GCC/Clang 
__sync_lock_test_and_set() is designed for creating locks, not as
a general atomic exchange function. As a result, it only provides
an acquire memory barrier and isn't guaranteed to actually store
the provided value (though it does on architectures we care about).

__atomic_exchange_n() is supported on GCC/Clang for the last ~10
years, so let's use that instead if available. We will keep the
__sync_lock_test_and_set() fallback around for ancient platforms,
but add a full memory barrier to match the documented behavior.
2026-04-19 06:34:45 -04:00
.github policy: Clarify that "AI" means specific things. 2026-04-15 15:38:20 -04:00
android-project Use singleTop launchMode for SDLActivity on Android 2026-04-11 20:04:46 +02:00
build-scripts wikiheaders: Don't escape . chars in manpage's brief section. 2026-04-15 13:28:52 -04:00
cmake cmake: emscripten/clang does not support -Wformat* (anymore) 2026-04-07 00:53:56 +02:00
docs [N-Gage] Remove optimisations except for native texture handling prior to some rework of the rendering back-end 2026-04-18 19:54:30 +02:00
examples examples: Make source code and console tabs take 80% of browser page. 2026-02-16 14:26:51 -05:00
include Sync SDL3 wiki -> header 2026-04-05 18:33:22 +00:00
src atomic: Fix missing full memory barrier on GCC/Clang 2026-04-19 06:34:45 -04:00
test test: use SDL_test for event handling 2026-04-14 02:46:42 +02:00
VisualC testtray: created VS project and added new click callbacks 2026-02-05 11:08:05 -08:00
VisualC-GDK gdk: Update Suspend/Resume best practices. 2026-03-07 11:19:09 -05:00
wayland-protocols wayland: bind cursor-shape-v1 at protocol version 2 2026-04-14 10:22:48 -04:00
Xcode Hiding OpenGLES API deprecation since iOS 12.0 warning 2026-02-15 10:57:07 -08:00
.clang-format Add CHECK_PARAM as a conditional macro in clang-format 2026-04-03 11:47:41 -04:00
.clang-tidy Fix size of memcpy in SDL_AudioDeviceFormatChangedAlreadyLocked 2023-08-05 14:14:45 -04:00
.editorconfig .editorconfig: Remove excess apostrophe at *.cocci 2024-06-16 09:18:17 -07:00
.gitignore Updated .gitignore for png test data 2025-10-10 08:59:27 -07:00
.wikiheaders-options wikiheaders: Generate a current list of supported environment variables. 2025-09-02 15:49:52 -04:00
AGENTS.md AGENTS.md: Change "may not" to "must not". 2026-04-15 17:26:54 -04:00
Android.mk GPU: OpenXR integration (#14837) 2026-01-30 17:18:51 -05:00
BUGS.txt Added a Discord link to BUGS.txt 2025-01-13 16:42:50 -08:00
CLAUDE.md CLAUDE.md: Just copy the text from AGENTS.md in here for now. 2026-04-16 13:51:49 -04:00
CMakeLists.txt atomic: Fix missing full memory barrier on GCC/Clang 2026-04-19 06:34:45 -04:00
CREDITS.md Updated the credits for SDL 3.0 2025-01-13 16:42:50 -08:00
INSTALL.md Add a link to docs/INTRO-mingw.md 2025-03-06 16:25:17 -08:00
LICENSE.txt Updated copyright for 2026 2026-01-01 09:40:08 -08:00
README.md Revert "Update README.md" 2025-11-16 01:15:10 +03:00
WhatsNew.txt Added SDL_HINT_MOUSE_DPI_SCALE_CURSORS 2025-12-09 17:12:08 -08:00

README.md

Simple DirectMedia Layer (SDL for short) is a cross-platform library designed to make it easy to write multi-media software, such as games and emulators.

You can find the latest release and additional information at: https://www.libsdl.org/

Installation instructions and a quick introduction is available in INSTALL.md

This library is distributed under the terms of the zlib license, available in LICENSE.txt.

Enjoy!

Sam Lantinga (slouken@libsdl.org)