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authorMarius Vlad <marius.vlad@collabora.com>2020-08-14 14:33:21 +0300
committerJan-Simon Moeller <jsmoeller@linuxfoundation.org>2020-08-25 11:54:19 +0000
commitf2fd22f0e9555c609d6d79a9e7a6f8718f9859b6 (patch)
tree293ddf49617c3a7b256cbf4058709cabc5547f20 /meta-app-framework/classes
parente238a444dc7ea5c72d20ea38cf693f70d4539623 (diff)
qtwayland-config: Do not enable by default resize after swap env variable
In our use-cases applications do not specify a size for the windows, leaving qtwayland itself to create an initial size for the surface (a 500 by 500 size). The compositor will send a configure event back to the application with the available/actual geometry area, resulting in resize performed by the application. This, in tandem with the fact that we tweaked qtwayland to perform the resize (due to SPEC-3334) after a buffer swap results in a short flicker -- the application does an initial commit with that initial size but with no background or any information attached to it. The environmental variable tunes the repainting mechanism in qtwayland affecting the way the resize is performed and was added when multiple or split surfaces are in use. Destroying one of them will not cause a scale back to the original area. We therefore disable by default that environment variable and leave it to the applications to enable it at start-up, if they still want to use split type of surfaces. Added a rather big comment about why that might necessary giving some clues and some mention that qtwayland doesn't make a distinction for the value of the environmental variable itself. Bug-AGL: SPEC-3522 Signed-off-by: Marius Vlad <marius.vlad@collabora.com> Change-Id: Ib0dcda6382dd52677a0768afe3948ab62955c9f8 Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/25120 Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org> Tested-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
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