MIRRORS/meta-raspberrypi
1
0
Fork 0
mirror of git://git.yoctoproject.org/meta-raspberrypi.git synced 2025-07-19 21:09:03 +02:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

rpi-config,README: Add option to enable offline image compositing

Browse Source 
Set this variable to enable support for dispmanx offline compositing
DISMANX_OFFLINE = "1"

This will enable the firmware to fall back to off-line compositing of
Dispmanx elements. Normally the compositing is done on-line, during scanout,
but cannot handle too many elements. With off-line enabled, an off-screen
buffer is allocated for compositing. When scene complexity (number and sizes
of elements) is high, compositing will happen off-line into the buffer.

Heavily recommended for Wayland/Weston.

See: http://wayland.freedesktop.org/raspberrypi.html

Change-Id: I722b20ff5bdba1bdd0683d30bee07c3934c95a1f
Signed-off-by: Alex J Lennon <ajlennon@dynamicdevices.co.uk>
This commit is contained in:
Alex J Lennon 2014-06-14 14:38:13 +01:00 committed by Andrei Gherzan
parent e598f63fbb
commit 6a8c859c2f
2 changed files with 29 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
README
View File

@ -35,9 +35,10 @@ Contents:
2.D. Disable overscan 2.D. Disable overscan
2.E. Set overclocking options 2.E. Set overclocking options
2.F. Optional - Video camera support with V4L2 drivers 2.F. Optional - Video camera support with V4L2 drivers
2.G. Images 2.G. Optional - Enable offline compositing support
2.H. Boot to U-Boot 2.H. Images
2.I. Image with Initramfs 2.I. Boot to U-Boot
2.J. Image with Initramfs
3. Extra apps 3. Extra apps
3.A. omxplayer 3.A. omxplayer
4. Source code and mirrors 4. Source code and mirrors
@ -138,7 +139,23 @@ OVER_VOLTAGE = "6"
Set this variable to enable support for the video camera (Linux 3.12.4+ required) Set this variable to enable support for the video camera (Linux 3.12.4+ required)
VIDEO_CAMERA = "1" VIDEO_CAMERA = "1"
2.G. Images 2.G. Optional - Enable offline compositing support
==================================================
Set this variable to enable support for dispmanx offline compositing
DISMANX_OFFLINE = "1"
This will enable the firmware to fall back to off-line compositing of
Dispmanx elements. Normally the compositing is done on-line, during scanout,
but cannot handle too many elements. With off-line enabled, an off-screen
buffer is allocated for compositing. When scene complexity (number and sizes
of elements) is high, compositing will happen off-line into the buffer.
Heavily recommended for Wayland/Weston.
See: http://wayland.freedesktop.org/raspberrypi.html
2.H. Images
=========== ===========
* rpi-hwup-image * rpi-hwup-image
Hardware up image Hardware up image
@ -148,7 +165,7 @@ VIDEO_CAMERA = "1"
Image based on rpi-basic-image which includes most of the packages in this Image based on rpi-basic-image which includes most of the packages in this
layer and some media samples. layer and some media samples.
2.H. Boot to U-Boot 2.I. Boot to U-Boot
=================== ===================
To have u-boot load kernel image, set in your local.conf To have u-boot load kernel image, set in your local.conf
KERNEL_IMAGETYPE = "uImage" KERNEL_IMAGETYPE = "uImage"
@ -156,7 +173,7 @@ KERNEL_IMAGETYPE = "uImage"
This will make kernel.img be u-boot image which will load uImage. This will make kernel.img be u-boot image which will load uImage.
By default, kernel.img is the actual kernel image (ex. Image). By default, kernel.img is the actual kernel image (ex. Image).
2.I. Image with Initramfs 2.J. Image with Initramfs
========================= =========================
To build an initramfs image : To build an initramfs image :
* Set this 3 kernel variables (in linux-raspberrypi.inc for example) * Set this 3 kernel variables (in linux-raspberrypi.inc for example)

6
recipes-bcm/bootfiles/rpi-config_git.bb
View File

@ -60,6 +60,12 @@ do_deploy() {
echo "# Enable video camera" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt echo "# Enable video camera" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
echo "start_x=1" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt echo "start_x=1" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
fi fi
# Offline compositing support
if [ -n "${DISPMANX_OFFLINE}" ]; then
echo "# Enable offline compositing" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
echo "dispmanx_offline=1" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
fi
} }
addtask deploy before do_package after do_install addtask deploy before do_package after do_install