Xpra: Ticket #693: scaling rendering is broken with opengl

Not sure when this started, tested with vpx. (found thanks to #692)

The opengl window renders the update only on the top-left portion of the screen which corresponds to the downscaled dimensions. The non-opengl rendering works fine.

Thu, 25 Sep 2014 04:21:54 GMT - Antoine Martin:

Good news: v0.14.x is not affected by this, but trunk r7803 is.

Bisecting by visual inspection (..) using a server running like this:

XPRA_SCALING_HARDCODED=1:3 xpra start :10 --start-child=glxspheres --no-mmap

Hardcoding the scaling to ensure it is enabled, and disabling mmap which bypasses encodings.

r7500 good
r7600 bad (with some other opengl errors thrown in..)
r7550 good
r7575 good
r7587 good
r7594 good
r7597 good
r7599 good
r7600 bad!

So this was caused by #679.

Thu, 25 Sep 2014 04:27:43 GMT - Antoine Martin: status changed; resolution set

status changed from new to closed
resolution set to fixed

Fixed in r7804: we must paint the screen using the unscaled dimensions!

Sat, 23 Jan 2021 05:03:10 GMT - migration script:

this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/693