Blender Git Loki

build_environment: ffmpeg support x86 builds on windows.

build_environment: mingw32 fix repeated unpack of gcc tarball

build_environment: osl work around shutdown issues.

there is an issue with objects destructing in a non deterministic way during process shutdown, temporary work around this until osl has a fix in place.

Cloth: Fix mistake in big matrix multiplication

Only the upper triangle of the block matrix is stored, thus when
executing operations on the lower triangle, each block must be
transposed. This transposition was not ocurring in the matrix-vector
multiplication function, which is fixed by this commit.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D3619

Cycles Denoiser: Allocate a single temporary buffer for the entire denoising process

With small tiles, the repeated allocations on GPUs can actually slow down the denoising quite a lot.
Allocating the buffer just once reduces rendertime for the default cube with 16x16 tiles and denoising on a mobile 1050 from 22.7sec to 14.0sec.

Cycles: Add Denoising Clean to the debugging denoising passes

GP: Select color in Brush or in Properties

After some artist feedback the material selection was not clear.

Now, the material can be selected in the top bar or in the properties panel.

1) If the material is selected in properties panel, all Brushes except pinned will be assigned to this material.

2) If the material is selected in the brush, the properties panel is updated to set the active material.

Added a new Pin icon to keep locked the material to one brush

Transform: Use grid_scale to configure the incremental snapping.

`gridview` is no longer being set and also does not match the new grid's drawing.

Cleanup: Remove debug printf

Fix MESH_OT_shortest_path_pick

It was working only for REDO.

The reason was that we were not tagging our beloved
new multi-threaded depedency graph.

GP: Fix unreported error drawing polygons

As the polygon drawing is handled using a buffer that is converted to stroke inmediately, the drawing engine was not drawing the buffer stroke because it was empty, and the stoke was not visible becaus eit was in fast drawing mode.

Now there is a special flag to indicate the polygon mode is enabled and force the drawing engine to draw strokes and disable fast drawing.

Multires: Fix wrong apply deform results when multires has sculpt already

Sculpt: Optimize Mask Overlay drawing

* Remove support for diffuse color in the pbvh buffers.
* Upload raw data to GPU.
* Only draw nodes that have mask data when drawing the overlay.

This should fix T56466

Multi-Objects: MESH_OT_select_axis

Now that this operator is working properly (in world space axis), it can
be ported for multi object support.

The issue of only running on redo is still present though, to be investigated
later.

MESH_OT_select_axis: Make it work with world axis, not local ones

Not, I tried using `dist_signed_squared_to_plane_v3` but profiling showed that
it is 50% slower than using regular `mul_v3_m4v3` for the verts.

I managed to get this number closer when manually inlining all the functions
called by `dist_signed_squared_to_plane_v3`. But still `mul_v3_m4v3` was better
and it makes the code simpler to understand.

Also I'm changing the default mode to positive, no idea why it was negative as
default in the first place.

Last but not least, the operator only works well on redo. This was a problem
before, not introduced by this patch.

MESH_OT_select_axis: cleanup (use enum instead of hardcoded values)

GP: Add arrange strokes to edit specials menu

Cycles: Cleanup, style

I wouldn't mind changing style to have space after keyword, but there was
no official code style change proposed.

Cycles: Fix wrong looking voronoi of second 2nd closest

Was only happening for release builds made with GCC-8. Probably some
optimization strtegy was confused by uninitialized variable.

Remove annotations lock to axis function

The lock to axis is only used by grease pencil object and can produce weird results in annotations.

This lock to axis function was kept by error when the annotation code was splitted from general grease pencil code.