The-OpenROAD-Project
Narrowing layout view turns blockages into checkerboard
Describe the bug
Minor issue but filing for tracking.
When viewing macro placement blockages in the GUI, the stippling causes the blockage shapes to become a checkerboard-like pattern that doesn't surround the macro:
If you continue to narrow the widget, it cycles through a couple of different visual representations before becoming checkerboard again:
A little narrower (this looks as expected):
A little narrower still (starting to get checkerboardy but shapes still surround macro):
I uploaded a video: https://drive.google.com/file/d/1m45glTVljXfBoTJrAEWOHoXTcXholIo7/view?usp=sharing
Note that when you zoom in, the blockages are drawn correctly.
Expected Behavior
Some other indication that the blockage is there
Environment
OpenROAD v2.0-16787-gcd519bb5e
To Reproduce
untar https://drive.google.com/file/d/1vBCqT6eZNc4hQky2EKP3htb7aXHH1CYt/view?usp=sharing
Run ./run-me-ICache-asap7-base.sh gui to bring up GUI Start narrowing the layout widget
Relevant log output
No response
Screenshots
No response
Additional Context
No response
@maliberty I don't have time right now, but I suspect it has to do with some aliasing (when I looked at it before, there are references to this behavior on Qts issues as well.)
