Blender Git Commits

Cleanup: style

Merge remote-tracking branch 'origin/master' into blender2.8

make.bat : restore msvc2015 support.

broke when i removed the 2013 support.

Cycles: increase volume stack to support 32 overlapping volumes.

This increases stack memory usage some, and ideally we'd support a dynamic
size. But this is quite difficult on the GPU and hopefully 32 is enough even
for very complex cases.

Fix E key in Python console not working after recent changes.

Icon/Render Preview: Fix Race condition with BKE_*_localize

When editing a Material the depsgraph can throw away the evaluated ID
before the preview job localized the said ID.

To fix this we localize the ID from the main thread.

Also fix WM_OT_previews_ensure crashing because of no depsgraph.

Fix/workaround T56019: memory leak with preview renders.

I would not expect the order of registration to matter, and ideally we want
to order the engines in the UI menu differently, but this helps for now.

Cleanup: remove debug comment.

Cycles: Fix missing nested particle systems when instanced multiple times

Was only visible when doing command line, since it was happening due to
cache-free policy which was aimed to bring memory usage down.

The issue is that if object with particle system is used as a nested
duplicator multiple times, it will only generate children first time,
and after that its caches are freed. After that duplication system
can not generate any instances, since the path cache is lost.

Now we delay caches free to after all objects are synchronized, which
ensures all instances are generated.

This will increase a memory peak a bit during object synchronization
time, but overall it shouldn't be that bad, since memory footprint
after synchronization will stay the same as before this change.

The ultimate thing to do here would be to drop the whole dependency
graph away, but this will require:

- API on engine side, to inform it to drop the dependency graph.
- Changes in Cycles report system to NOT use evaluated scene to get
scene name (evaluated scene will be gone with dependency graph).

Subsurf: Add subdivision code which uses new module

The code is ifdef-ed for now, since there is more work needed
to be done before we can officially switch to it.

Uses new subdiv module.

Subsurf: Begin new subdivision surface module

The idea is to use this as a replacement of old CCG, now it is
based on OpenSubdiv. The goal is to reduce any possible overhead
which was happening with OpenSubdiv used by CCG.

Currently implemented/supported:

- Creation from mesh, including topology on OpenSubdiv side,
its refinement.

- Evaluation of limit point, first order derivatives, normal,
and face-varying data for individual coarse position.

- Evaluation of whole patches.

Currently not optimized, uses evaluation of individual coarse
positions.

- Creation of Mesh from subdiv, with all geometry being real:
all mvert, medge, mloop, and mpoly.

This includes custom data interpolation, but all faces currently
are getting separated (they are converted to ptex patches, which
we need to weld back together).

Still need to support lighter weights grids and such, but this
is already a required part to have subsurf working in the middle
of modifier stack.

Annoying part is ifdef all over the place, to keep it compilable
when OpenSubdiv is disabled. More cleaner approach would be to
have stub API for OpenSubdiv, so everything gets ifdef-ed in a
much fewer places.

OpenSubdiv: Add API to evaluate face-varying data

There are move changes along the line to keep everything
working from from C.

Cleanup: style for GPU module

GPU: Fix build error on Mac and Windows.

Merge branch 'master' into blender2.8

3D View: show 3D axis-letter when pointing away

While only the positive axis is shown,
account for an exception when axis aligned.

Cycles: add Principled Hair BSDF.

This is a physically-based, easy-to-use shader for rendering hair and fur,
with controls for melanin, roughness and randomization.

Based on the paper "A Practical and Controllable Hair and Fur Model for
Production Path Tracing".

Implemented by Leonardo E. Segovia and Lukas Stockner, part of Google
Summer of Code 2018.

Cleanup: Cryptomatte node style tweaks.

Compositor: Cryptomatte compositing node.

This patch adds a new matte node that implements the Cryptomatte specification.
It also incluces a custom eye dropper that works outside of a color picker.
Cryptomatte export for the Cycles render engine will be in a separate patch.

Reviewers: brecht

Reviewed By: brecht

Subscribers: brecht

Tags: #compositing

Differential Revision: https://developer.blender.org/D3531

GWN: Port to GPU module: Replace GWN prefix by GPU