Well, my patch-foo seems week as I can't seem to generate a good diff.
At any rate, here's what I'm proposing:
Using a fully patched source tree, open hw/xmir/xmir-input.c. Find the
xmir_handle_input_in_main_thread() function. In the
mir_event_type_resize case add the following after the ErrorF() line:
xmir_output_handle_resize(ctx->xmir_window,
mir_resize_event_get_width(mir_event_get_resize_event(ev)),
mir_resize_event_get_height(mir_event_get_resize_event(ev)));
such that the code block looks like:
case mir_event_type_resize:
ErrorF("Resize requested to %ix%i\n",
mir_resize_event_get_width(mir_event_get_resize_event(ev)),
mir_resize_event_get_height(mir_event_get_resize_event(ev)));
xmir_output_handle_resize(ctx->xmir_window,
mir_resize_event_get_width(mir_event_get_resize_event(ev)),
mir_resize_event_get_height(mir_event_get_resize_event(ev)));
if (ctx->xmir_window->damage)
DamageDamageRegion(&ctx->xmir_window->window->drawable,
&ctx->xmir_window->region);
break;
I'm thinking since xmir_output_handle_resize() is being called, we might
be able to remove some subsequent calls to it to avoid some overhead.
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which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1491071
Title:
Xmir doesn't update the screen size until something is actually
rendered
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https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1491071/+subscriptions
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