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Simple Directmedia Layer
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Sam Lantinga f8839289b0 Potential fix for bug 5393 - KMSDRM: using atomic mode setting breaks GPU compatibility 
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I was trying the KMSDRM video backend with some very simple programs that were working ok on 2.0.12. The same code won?t work on the current dev branch and I get:

DEBUG: check_modesetting: probing ?/dev/dri/card0?
DEBUG: /dev/dri/card0 connector, encoder and CRTC counts are: 4 5 6
DEBUG: check_modesetting: probing ?/dev/dri/card0?
DEBUG: /dev/dri/card0 connector, encoder and CRTC counts are: 4 5 6
DEBUG: KMSDRM_VideoInit()
DEBUG: Opening device /dev/dri/card0
DEBUG: Opened DRM FD (3)
DEBUG: no atomic modesetting support.
DEBUG: Video subsystem has not been initialized
INFO: Using SDL video driver: (null)
DEBUG: Video subsystem has not been initialized

After carefully checking, the radeon driver doesn?t support atomic modesetting. That?s not the only problem : the same happens with the amdgpu driver if we disable Display Core (kernel parameter amdgpu.dc=0, which is required to get analogue outputs working).

This is a major regression in the KMSDRM driver.

Using atomic mode setting is great, but having no fallback to the "standard KMS" is bad.
2020-12-15 12:22:48 -08:00
acinclude minor cleanups to configure.ac to reduce autoconf-2.70 warnings a bit. 2020-12-14 08:11:40 +03:00
android-project Android: keep compatibility with older JDK 2020-10-28 14:03:05 +01:00
android-project-ant Added the old ant Android build project structure 2017-10-28 12:11:25 -07:00
build-scripts Updated SDL to 2.0.14 in preparation for release candidate 2020-12-08 18:56:06 -08:00
cmake Potential fix for bug 5393 - KMSDRM: using atomic mode setting breaks GPU compatibility 2020-12-15 12:22:48 -08:00
debian Updated SDL to 2.0.14 in preparation for release candidate 2020-12-08 18:56:06 -08:00
docs added documentation docs/README-os2.md (based on original readme.os2). 2020-10-14 23:01:06 +03:00
include fix bug #5395: handle old systems where inotify_init1 is not available 2020-12-13 15:32:24 +03:00
src Potential fix for bug 5393 - KMSDRM: using atomic mode setting breaks GPU compatibility 2020-12-15 12:22:48 -08:00
test test/acinclude.m4: rename SDL_CONFIG to SDL2_CONFIG, regenerate configure 2020-12-15 01:20:00 +03:00
VisualC fix bug #5384 -- define DLL_EXPORT in DLL builds and adjust begin_code.h 2020-12-09 12:01:10 +03:00
VisualC-WinRT fix bug #5384 -- define DLL_EXPORT in DLL builds and adjust begin_code.h 2020-12-09 12:01:10 +03:00
visualtest test: unify all the command line usage logging. 2019-05-28 17:39:13 -04:00
wayland-protocols wayland: ask xdg-decoration protocol extension to use server-side decorations if possible. 2018-11-04 21:08:40 +01:00
Xcode whitespace. 2020-12-15 00:11:10 +03:00
Xcode-iOS Added weak linking to hidapi framework 2020-11-17 10:29:36 -08:00
.hgignore Fixed bug 4965 - Update the .hgignore file 2020-02-03 16:38:07 -08:00
Android.mk minor whitespace fix 2020-10-09 03:28:30 +03:00
autogen.sh Don't use pushd/popd in autogen.sh; Ubuntu's /bin/sh doesn't support it. 2016-12-26 22:58:58 -05:00
BUGS.txt BUGS.txt: Changed mailing list link to discourse.libsdl.org. 2017-04-01 00:05:25 -04:00
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 fix bug #5395: handle old systems where inotify_init1 is not available 2020-12-13 15:32:24 +03:00
configure Potential fix for bug 5393 - KMSDRM: using atomic mode setting breaks GPU compatibility 2020-12-15 12:22:48 -08:00
configure.ac Potential fix for bug 5393 - KMSDRM: using atomic mode setting breaks GPU compatibility 2020-12-15 12:22:48 -08:00
COPYING.txt Updated copyright date for 2020 2020-01-16 20:49:25 -08:00
CREDITS.txt Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
INSTALL.txt More HTTPS doc tweaks. 2017-02-16 16:59:07 -05:00
Makefile.in Fixed bug 5399 - make install is broken as it depends on missing rule build 2020-12-15 00:42:17 -08:00
Makefile.minimal Added a dummy sensor driver 2018-08-21 13:29:21 -07:00
Makefile.os2 Updated SDL to 2.0.14 in preparation for release candidate 2020-12-08 18:56:06 -08:00
Makefile.pandora Added a dummy sensor driver 2018-08-21 13:29:21 -07:00
Makefile.psp added SDL_strtokr() as a replacement for POSIX strtok_r (bug #4046.) 2019-11-20 20:40:50 +03:00
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.txt readme: correct webpage URL to use HTTPS. 2017-02-16 13:30:34 -05:00
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 build: Merge pkg-config Libs.private into Libs for static-only builds 2020-04-11 23:38:34 +01:00
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 Fixed bug 4544 - SDL2.m4 SDL2.framework patch made it impossible to fail detection 2019-03-16 18:45:10 -07:00
sdl2.pc.in build: Merge pkg-config Libs.private into Libs for static-only builds 2020-04-11 23:38:34 +01:00
SDL2.spec.in Fixed bug 4615 - RPM Build fails due to unpackaged files 2019-06-11 19:58:10 -07:00
SDL2Config.cmake Fixed bug 3651 - CMake build does not install CMake package configuration 2017-08-09 19:03:10 -07:00
TODO.txt Fixed crash if initialization of EGL failed but was tried again later. 2015-06-21 17:33:46 +02:00
VisualC.html Fixed two typos in documentation. 2016-01-12 22:23:53 +01:00
WhatsNew.txt Fixed the name of the PS5 hint 2020-12-09 10:39:36 -08:00

README.txt 

                         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)