Blender Git Loki

Gawain: update comments to match latest API

Fix T50906 and T49361, bevel didn't curve in plane sometimes.

Background Fit could set inf zoom

Fix T51657: ID user count error when deleting a newly created object with an assigned dupli_group

Stupid RNA accessor was not handling usercount at all on Object.dupli_group...

Fix own mistake with NULL materials in particles

Rename Eevee post process effects

No need to have "Enable" in their names.

Gawain: Add support for rendering using an instance batch (for particles)

Fix T51390: Blender 2.78c will freeze or force close when adding particles at random.

DM evaluation code was simply never clearing the `deformedOnly` flag
when evaluating a generative modifier...

Quite astonishing this never got catched before, a lot of particle code
relies on valid value of this flag!!!

Eevee : fix light colors

Eevee: Remove non-ltc area light code + optimisation.

Reduce size ShadingData struct leads to some improvement even with more computation.

3D grid: Fix precision issue 2/2

We now floor the corner position and use this position as origin.
This gives us perfect derivatives in all cases even if very far from the origin.
Unfortunately this won't fix the low precision of coordinates used for computing the actual grid size, resulting in thick, non-smoothed lines.

Also did a bit of refactor how the axes are drawn.

3D grid: only draw if needed.

Object Mode Engine: Fixing the 3D grid 1/2

Do not use the inverse perspective matrix inside the shader to recover world positions.
That leads to severe float imprecision leading to nasty artifacts.

Instead we compute the world view vector for each pixels and do a ray to plane intersection.
We are still getting low precision derivatives when going far away from the origin, and thus artifacts.

This commit also fixes the non-appearing negative Z axis in 3D view.

Revert "Remove MTexPoly layers"

This reverts commit c6e92b4947945e3c1238d936f7954a5b4688c195.

Move particle cache population to a dedicated function

Should help readability of switch statement which becomes far too big now.

Node Backdrop Manipulator

From custom-manipulator branch, usable when viewer node is selected.

This might need some changes but works on basic level.

Fix leak with texture-paint shaders

Fix T51625: fix impossibility to delete uninstantiated objects from Outliner.

The fact that we can end with uninstantiated objects is not expected
currently, but would rather not start chasing all corner cases that may
lead to that situation.

User shall be able to delete uninstantiated objects from Outliner, though!

Fix texture paint crash when there are no UV's

Missing check in own recent commits,
also only use texture-paint drawing on active object.

Fix T51520: Broken vertex weights after two mesh joining.

Take Two, did not detect that dynapaint was also creating named vgroup cdlayer!