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David Gow 84808ea4bb video: Add SDL_PremultiplySurfaceAlphaToARGB8888() 
A number of video backends need to get ARGB8888 formatted surfaces with
premultiplied alpha, typically for mouse cursors. Add a new function to
do this, based loosely on legacy_alpha_premultiply_ARGB8888() from the
KMSDRM backend.

The new function, SDL_PremultiplySurfaceAlphaToARGB8888() takes two
arguments:
- src: an SDL_Surface to be converted.
- dst: a buffer which is filled with premultiplied ARGB8888 data of the
  same size as the surface (assuming pitch = w).

This is not heavily optimised: it just repeatedly calls SDL_GetRGBA() to
do the conversion, but should do for now.
2021-10-22 05:50:00 -07:00
.github
Add MinGW-w64 builds to GitHub Actions
2021-09-20 08:58:43 -07:00
acinclude
acinclude/libtool.m4: Apply macos11 patch from libtool bug #44605
2021-01-09 00:11:20 +03:00
android-project
backout SDL_AndroidSetInputType()
2021-10-17 23:47:59 +02:00
android-project-ant
Added the old ant Android build project structure
2017-10-28 12:11:25 -07:00
build-scripts
wikiheaders.pl: Try to handle functions with multiple declarations better.
2021-10-08 20:50:30 -04:00
cmake
cmake: Move the old, global add_definitions (etc) to an interface library.
2021-10-05 12:34:29 -04:00
debian
Updated to version 2.0.17 for development
2021-08-10 15:02:36 -07:00
docs
enabled os2 joystick code (if anyone has actually a use for it...)
2021-10-15 08:51:02 +03:00
include
Added SDL_USE_BUILTIN_OPENGL_DEFINITIONS to avoid system OpenGL headers
2021-10-21 20:48:08 -07:00
src
video: Add SDL_PremultiplySurfaceAlphaToARGB8888()
2021-10-22 05:50:00 -07:00
test
Fix compiler warnings in testvulkan.c
2021-10-06 15:24:41 -07:00
VisualC
fix syntax error in SDL.vcxproj.filters
2021-09-27 14:10:02 +03:00
VisualC-WinRT
winrt: Update SDL-UWP to VS2019
2021-09-08 06:26:26 -10:00
visualtest
fix permissions of a few files
2021-02-22 15:44:32 +03:00
wayland-protocols
wayland: Add support for text-input-unstable-v3
2021-07-29 14:43:46 -07:00
Xcode
Removed X11 code from Apple Xcode project
2021-09-24 10:59:35 -07:00
Xcode-iOS
Xcode-iOS Demos: Add CFBundleShortVersionString to Info.plist
2021-09-29 16:39:31 -07:00
.gitignore
Added testgeometry to the git ignore file
2021-09-22 09:30:28 -07:00
Android.mk
minor watcom build fixes.
2021-05-15 00:22:50 +03:00
autogen.sh
bump minimum required autoconf version and revise autogen.sh
2021-04-14 23:20:40 +03:00
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
riscos: Implement SDL_GetPrefPath()
2021-10-12 13:07:52 -07:00
configure
riscos: Implement SDL_GetPrefPath()
2021-10-12 13:07:52 -07:00
configure.ac
riscos: Implement SDL_GetPrefPath()
2021-10-12 13:07:52 -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
development list has moved to forum
2021-06-01 16:49:13 -07:00
LICENSE.txt
license: Fixing the license file to be correctly scooped up by Github automation
2021-02-17 13:08:13 -05:00
Makefile.in
configure: Fixes to make SDL link as C++ on Haiku.
2021-08-06 14:08:50 -04:00
Makefile.minimal
Added a dummy sensor driver
2018-08-21 13:29:21 -07:00
Makefile.os2
minor update to os2 makefile.
2021-10-04 00:32:56 +03:00
Makefile.pandora
Added a dummy sensor driver
2018-08-21 13:29:21 -07:00
Makefile.psp
PSP: fixed build
2021-10-04 21:56:42 +02:00
Makefile.wiz
Added a dummy sensor driver
2018-08-21 13:29:21 -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
cmake: Forgot to add this file to revision control.
2020-02-25 14:52:03 -05:00
sdl2-config.cmake.in
sdl2-config.cmake.in: Make SDL2::SDL2 work with MinGW, fixes #3665
2021-07-08 14:55:33 -07:00
sdl2-config.in
build: Don't duplicate Libs in Libs.private in pkg-config file
2020-04-12 13:24:36 +01:00
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
Fix Debug-only builds with CMake
2021-10-05 18:45:53 -07:00
TODO.txt
Fixed up legacy MoinMoin URLs at wiki.libsdl.org
2021-04-01 12:20:33 -04:00
WhatsNew.txt
Enable AAUDIO driver for Android
2021-08-10 14:50:43 -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
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