Update of bug #18765 (project mypaint):
Status: None => Confirmed
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Follow-up Comment #1:
The size limitation comes from X11. The alternative is to draw the cursor on
the canvas ourselves, see
https://gitorious.org/~maxy/mypaint/maxy-experimental/commits/cursor_fun for
an experiment with that. This allows to visualize other interesting things
like intuos tilt.
The main problem is that it is slow; for the large ones the lag can become
very irritating while painting. We already use the GPU indirectly through
Cairo for zooming/rotating if it is available, but in general the code that
displays the canvas is rather slow. You notice when dragging the canvas while
zoomed out.
If you can figure out a way to get the FPS high enough to draw an interactive
cursor even when zoomed out, that would be very welcome.
A "cheaper" alternative would to draw the cursor shape on-canvas only while
you resize it.
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