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Frank Praznik 5b8ca05f1a wayland: Add a forced screen space scaling mode 
Add a mode that forces Wayland windows to output with scaling that forces 1:1 pixel mapping.

This is intended to allow legacy applications to be displayed without desktop scaling being applied, and may have issues with some display configurations, as this forces the window to behave in a way that Wayland desktops were not designed to accommodate (rounding errors can result from certain combinations of window/scale values, the window may be unusably small, jump in size at times, or appear to be larger than the desktop space, and cursor precision may be reduced).

Windows flagged as DPI-aware are not affected by this.

The automated video test suite passes with the hint turned on.
 		2024-01-28 13:31:42 -05:00
.github ci: bump actions version tag 2024-01-26 02:33:20 +01:00
VisualC Added the environment variable SDL_LOGGING to control default log output 2024-01-27 19:30:22 -08:00
VisualC-GDK Define SDL_PLATFORM_* macros instead of underscored ones (#8875) 2024-01-24 01:40:51 +00:00
VisualC-WinRT Allow optimizing memcpy and memset where possible 2024-01-21 06:55:29 -08:00
Xcode Added VisionOS as a supported target to the Xcode project 2024-01-27 11:07:21 -08:00
android-project Switched SDL_TouchID and SDL_FingerID to be Uint64 with 0 being an invalid value 2024-01-18 10:55:24 -08:00
build-scripts Only retain SDL_* + platform macro's in rename_macros.py 2024-01-26 18:05:49 +01:00
cmake Don't try to use SDL platform macros in configure-time checks 2024-01-24 14:12:50 +03:00
docs wayland: Add a forced screen space scaling mode 2024-01-28 13:31:42 -05:00
include wayland: Add a forced screen space scaling mode 2024-01-28 13:31:42 -05:00
mingw/pkg-support/cmake build: don't add SDL3 subfolder to include path for external projects 2022-11-27 14:33:13 -08:00
src wayland: Add a forced screen space scaling mode 2024-01-28 13:31:42 -05:00
test Fixed testautomation log callback calling convention 2024-01-27 22:44:13 -08:00
wayland-protocols wayland: Use the preferred order of displays exposed by KDE 2024-01-27 02:10:49 -05:00
.clang-format Commented out syntax that causes Visual Studio 2019 to complain on every edit 2022-12-02 00:43:01 -08:00
.clang-tidy Fix size of memcpy in SDL_AudioDeviceFormatChangedAlreadyLocked 2023-08-05 14:14:45 -04:00
.editorconfig Fixed formatting for Haiku cc files 2023-01-25 03:03:41 -08:00
.gitignore Make Xbox GDK code public (and fix some GDK code rot) (#8844) 2024-01-14 20:31:41 -08:00
.wikiheaders-options sdlwiki: SDL3 advises users to include through 'SDL3/SDL.h' 2023-03-21 02:19:19 +01:00
Android.mk Always provide an implementation for all SDL3 symbols 2023-10-12 14:00:47 +02:00
BUGS.txt Cleaned up a few more Bugzilla mentions. 2021-02-12 14:46:49 -05:00
CMakeLists.txt Re-enable C runtime with Mingw, and disable the problematic math test 2024-01-21 06:55:29 -08:00
CREDITS.md docs: Moved CREDITS and INSTALL to markdown format. 2023-11-29 12:31:27 -05:00
INSTALL.md docs: Moved CREDITS and INSTALL to markdown format. 2023-11-29 12:31:27 -05:00
LICENSE.txt Updated copyright for 2024 2024-01-01 13:15:26 -08:00
README-SDL.txt More HTTPS changes in the documentation. 2017-02-16 16:52:03 -05:00
README.md docs: Convert everything to Unix-style endlines. 2023-11-29 11:29:57 -05:00
WhatsNew.txt Added the environment variable SDL_LOGGING to control default log output 2024-01-27 19:30:22 -08:00

README.md

Simple DirectMedia Layer (SDL) Version 3.0

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. If you are migrating to SDL 3.0 from SDL 2.0, the changes are extensively documented in README-migration.md.

Enjoy!

Sam Lantinga (slouken@libsdl.org)