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Simple Directmedia Layer
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Eric Wasylishen d3b970d4d5 HighDPI: remove SWP_NOSIZE in WIN_SetWindowPosition 
If the move results in a DPI change, we need to allow the window to resize (e.g. AdjustWindowRectExForDpi frame sizes are different).

- WM_DPICHANGED: Don't assume WM_GETDPISCALEDSIZE is always called for PMv2 awareness - it's only called during interactive dragging.

- WIN_AdjustWindowRectWithStyle: always calculate final window size including frame based on the destination rect,
not based on the current window DPI.

- Update wmmsg.h to include WM_GETDPISCALEDSIZE (for WMMSG_DEBUG)

- WIN_AdjustWindowRectWithStyle: add optional logging

- WM_GETMINMAXINFO: add optional HIGHDPI_DEBUG logging

- WM_DPICHANGED: fix potentially clobbering data->expected_resize

Together these changes fix the following scenario:
- launch testwm2 with the SDL_WINDOWS_DPI_AWARENESS=permonitorv2 environment variable
- Windows 10 21H2 (OS Build 19044.1706)
- Left (primary) monitor: 3840x2160, 125% scaling
- Right (secondary) monitor: 2560x1440, 100% scaling

- Alt+Enter, Alt+Enter (to enter + leave desktop fullscreen), Alt+Right (to move window to right monitor). Ensure the window client area stays 640x480. Drag the window back to the 125% monitor, ensure client area stays 640x480.
 		2022-06-11 14:19:01 -07:00
.github ci: enable CMake test for Emscripten 2022-06-08 08:09:46 -07:00
VisualC DirectX 12 Renderer (#5761) 2022-06-06 17:42:30 -07:00
VisualC-WinRT Refactoring: move GUID operations out of Joystick 2022-06-04 17:22:13 -07:00
Xcode revert mode changes from commit d58d637ac 2022-06-08 21:58:10 +03:00
Xcode-iOS Updated iOS build instructions 2021-11-30 12:19:26 -08:00
acinclude imported two libtool mainstream commits 28fbcb6a and b55b1cc8 2022-03-16 17:15:20 +03:00
android-project Adjust gradle dependencies to enable the build to position assets for the APK 2022-03-15 21:57:25 -07:00
android-project-ant Added the old ant Android build project structure 2017-10-28 12:11:25 -07:00
build-scripts revert mode changes from commit d58d637ac 2022-06-08 21:58:10 +03:00
cmake Allow empty default values to the dep_option macro 2022-06-07 09:17:44 -07:00
docs cmake: install SDL2::SDL2test when configuring with SDL2_TEST enabled 2022-06-03 12:41:36 -07:00
include Support PMv2 DPI awareness, add SDL_HINT_WINDOWS_DPI_AWARENESS 2022-06-11 14:19:01 -07:00
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 HighDPI: remove SWP_NOSIZE in WIN_SetWindowPosition 2022-06-11 14:19:01 -07:00
test Updated to autoconf 2.71 2022-06-08 10:14:36 -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
.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 Initial support for building for Windows with OpenWatcom 2022-05-19 20:11:10 +03:00
Android.mk mark Android.mk as non-executable 2021-11-12 12:55:28 +03:00
BUGS.txt Cleaned up a few more Bugzilla mentions. 2021-02-12 14:46:49 -05:00
CMakeLists.txt Add missing library needed for locale functions on PS Vita 2022-06-09 11:07:06 -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 Refactoring: move GUID operations out of Joystick 2022-06-04 17:22:13 -07:00
Makefile.minimal build libSDL2_test too with Makefile.minimal 2021-11-14 01:10:32 +03:00
Makefile.os2 Refactoring: move GUID operations out of Joystick 2022-06-04 17:22:13 -07:00
Makefile.pandora more fixes to standalone makefiles. 2021-11-13 21:56:20 +03:00
Makefile.w32 DirectX 12 Renderer (#5761) 2022-06-06 17:42:30 -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.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: make SDL2Config.cmake compatible with autotools' sdl2-config.cmake 2022-06-03 12:41:36 -07:00
TODO.txt Fixed up legacy MoinMoin URLs at wiki.libsdl.org 2021-04-01 12:20:33 -04:00
WhatsNew.txt Switch versioning scheme to be the same as GLib and Flatpak 2022-05-04 09:55:35 -07:00
autogen.sh Simplified autogen.sh, thanks to @smcv for the tip 2022-05-05 11:54:24 -07:00
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
configure updated configury to silence ac2.7x warnings with minor rearrangement. 2022-06-08 20:51:04 +03:00
configure.ac updated configury to silence ac2.7x warnings with minor rearrangement. 2022-06-08 20:51:04 +03:00
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: rewrite autotools' sdl2-config.cmake.in with IMPORTED targets + no more -lmingw32 2022-06-03 12:41:36 -07:00
sdl2-config.in Add -Wl,-Bstatic to "sdl2-config --static-libs" output 2022-06-03 16:27:13 -07:00
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

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)