Right now /dev/fb0 is hardcoded. This is not ideal. Therefore
QT_QPA_EGLFS_FB is introduced. This environment variable can be set to
a different framebuffer device. Once it is set, eglfs will use the
specific device. This is similar to linuxfb's fb=... plugin parameter.
The actual behavior depends on the board-specific implementations.
For now only iMX6 has real support. It extracts the index from the
device name as bind the EGL display to the corresponding framebuffer
using the vendor-specific fbGetDisplayByIndex(). Other hooks can
follow suit later on.
With this patch eglfs is at least on par with linuxfb, meaning that,
if the board supports it, different apps can run on different screens.
Task-number: QTBUG-36113
Change-Id: Ia3c88bd06e108bc668433e3c5c3fce34a5a0e73d
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
Enabling vsync and double buffering improves the overall impression.
Enabling by default helps to get the best "out of the box"
If not desired, one can disable this behavior via:
export QT_EGLFS_IMX6_NO_FB_MULTI_BUFFER=1
Change-Id: I21ce5366ea5829140d8103cf2dbd8c487d079db6
Reviewed-by: Donald Carr <sirspudd@gmail.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
Return the native display created in QEglFSImx6Hooks in
platformDisplay().
Change-Id: I2b28ac66dce12a1054fc2f78dbfad0723f8e5688
Reviewed-by: Andy Nichols <andy.nichols@digia.com>
Change copyrights and license headers from Nokia to Digia
Change-Id: If1cc974286d29fd01ec6c19dd4719a67f4c3f00e
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
