Blender Git Loki

GPU: Add HQ normals workaround.

This change makes it possible for platforms to only support high quality
normal rendering. This is part of {T82856} where current AMD drivers
running on the polaris architecture does not support the low quality
setting due to a driver bug.

In a next commit the work around will be enabled.

DrawManager: High quality normals for non meshes

This adds high quality normals for non meshes. These include

* Volumetric Object Wireframe
* Metaballs
* Extracted Curves
* Curves in edit mode

This is in preparation to fix a regression in recent AMD
drivers where the `GL_INT_2_10_10_10_REV` data type isn't
working in Polaris cards.

Version: Blender v2.91.1 beta

Fix T83300: constant scene refreshing in Cycles with empty volumes

This infinite loop is caused by a conflict between the volume mesh
creation which unintentionally clears the shaders before early exiting
when no grid is found, and the Blender exporter which adds back the
shaders causing us to reupdate as the shaders changed.

To fix this simply preserve the shaders on the Volume node.

(Backported bugfix with additional changes to make it work in 2.91)

Fix: Update normals when switching scene quality

Recent commits also updated normals for metaballs, curves and volumetric
objects. This change tags will tag to generate geometry for these new
types.

Fix T84397: Creating and removing many objects very quickly causes a crash

The root of the issue was caused by the dependency graph using ID pointer
to map evaluated state from old depsgraph to new one upon relations update.
This was failing when IDs were re-allocated rapidly: was possible that
Object ID's evaluated state assigned to Mesh and vice versa.

Now depsgraph uses Session UUID to identify which IDs to restore evaluated
state to. The session UUID is stored in the IDNode, so that id_orig is not
dereferenced on depsgraph update since the ID might be freed.

The root of the issue is identified by Campbell, original patch was done
by Bastien, thanks! Also thanks to Oliver and Ray and everyone else for
testing!

Fix T84459: Wireframe not displaying with AMD GPU

Issue appears to be caused by AMD graphics driver later than 20.11.1 and
affects older GPUs (Polaris/FIJI cards). Wireframe drawing uses the same
OpenGL data type for storing normals what is known to be faulty.

This patch enabled storing the normals using GPU_COMP_I16. It also
solves the normals drawing in edit mode for vertex and loop normals.

Merge branch 'master' into temp-gpencil-interpolate

Merge branch 'master' into greasepencil-object

Fix T84459: Face normals not displaying (AMD GPU)

This is part two of the fix for T84459.
Issue appears to be caused by AMD graphics driver later than 20.11.1 and
affects older GPUs (Polaris/FIJI cards). Drawing normals in edit mode
uses the same OpenGL data type for storing normals that is known to be
faulty.

This change fixes the face dot normals by using GPU_COMP_I16.

GPU: Enable HQ normal work around for AMD Polaris

THe high quality normals work around is enabled for Polaris cards using
the official drivers. Since driver version 2.11.2 they fail to render
using low quality normals.

The detection of polaris cards is done by matching the opengl renderer.
The renderer strings have been extracted from various reports linked to
{T82856} but isn't complete as some reports are missing the exact
renderer as users don't always report via the help menu.

GPU: Add HQ normals workaround.

This change makes it possible for platforms to only support high quality
normal rendering. This is part of {T82856} where current AMD drivers
running on the polaris architecture does not support the low quality
setting due to a driver bug.

In a next commit the work around will be enabled.

DrawManager: High quality normals for non meshes

This adds high quality normals for non meshes. These include

* Volumetric Object Wireframe
* Metaballs
* Extracted Curves
* Curves in edit mode

This is in preparation to fix a regression in recent AMD
drivers where the `GL_INT_2_10_10_10_REV` data type isn't
working in Polaris cards.

Fix T83625: Shading attribute names cause compilation error.

Some GPU platforms don't support having more than one underscore in
sequence in an attribute name. This change will remove the underscore
as a possible character when encoding to save names.

Fix crash sliding effect sequence strips

Off by one error in array access.

Fix T83280: Crash when deleting hair collision collection.

Root of the issue was missing management of ID pointers in the cloth
modifier data stored in ParticleSystem for hair physics, in the
'foreach_id' particle system code.

Using modifier's 'foreach_id' code in psys one unfortunately requires
some ugly conversion gymnastics, but this is still better than having
dedicated code for that case.

Note that this is actually a fairly critical issue, fix should be
backported to 2.91.1 should we do it, and to 2.83 LTS as well I think.

- apply changes to dependency patch

NLA: Strip Post-transform Vertical Shuffle and Auto-Grow Track List

**Not ready for review**

Differential Revision: https://developer.blender.org/D10103

Merge branch 'master' into experiment-point-distribution

rename back