The shader is way simpler and run way faster on lower end hardware
(2x faster on intel HD5000) but did not notice any improvement on AMD Vega.
This also adds a few changes to the way the wireframes are drawn:
- the slider is more linearly progressive.
- optimize display shows all wires and progressively decrease "inner" wires
intensity. This is subject to change in the future.
- text/surface/metaballs support is pretty rough. More work needs to be done.
This remove the optimization introduced in f1975a4639.
This also removes the GPU side "sharpness" calculation which means that
animated meshes with wireframe display will update slower.
The CPU sharpness calculation has still room for optimization. Also
it is not excluded that GPU calculation can be added back as a
separate preprocessing pass (saving the computation result [compute or
feedback]).
The goal here was to have more speed for static objects and remove
the dependency of having buffer textures with triangle count. This is
preparation work for multithreading the whole DRW manager.
Right now does not add padding at the end of the buffer.
This seems not necessary but may cause problem on some platform. If needed
we will add this padding (only 2 more vertices).
Using listener here, although I suspect we should be using message
subscriber only. That said, this mimics the behaviour of the buttons
main region.
As for the original bug report what was happening was that when
switching between viewlayers (or when creating one) we may not get the
same active object. So the context breadcrumbs are different.
And the bug itself was that we were missing a redraw on view layer
change.
Aka all the thousand of reports duplicated here.
I should have seen this coming, since I had to add a hack in the first
place because things were "not working".
I should have figured out earlier that COW handles base in a really
special way, with its own special object_runtime_backup hack.
Other software uses this to define UV islands, so we can't just merge
any UVs with the same coordinate. They have to share a vertex too.
Contributed by Maxime Robinot, with changes by me.
Differential Revision: https://developer.blender.org/D4006
