Blender Git Loki

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 T82591: Performance regression when rendering at very high resolution

This patch introduces a partial update of GPUTexture. When rendering
a large image the GPUTexture could have been scaled. The old implementation
would rescale the image on CPU and create a new GPUTexture. This
resulted in flooding the PCI bus.

The new solution would only scale and upload the parts of the GPUTexture
that has been changed. It does this by keeping track of areas of 256x256
pixels. When something changes the tiles that cover that changes will be
rescaled and uploaded the next time the GPUTexture is requested.

Test situation: Default Cube, 4 samples, 19200x10800 tile size 512.

Blender 2.83.9: 4m27s.
Blender 2.91: 20+m (regression)
This patch: 1m01s.

There is still room for more optimizations:
* Reduce the time that an image is locked.
** Use task scheduling to update the tiles of an image.
** Generic optimization of the ImBuf scale method.

Maniphest Tasks: T82591

Differential Revision: https://developer.blender.org/D9591

Outliner: Set active modifier on click

The outliner already expands the panel for the modifier you click on,
this just extends that idea to also set it active, which is consistent
with behavior of active and selected items elsewhere in Blender.

Cleanup: Various clang tidy warnings

There are more in the new mesh fairing code and in the poisson
distribution code, this commit doesn't fix those.

Fix T82960: Inaccurate selection on collapsed outliner rows

After rB15083d9e1 the outliner tree is not rebuilt after expanding or
collapsing rows. Because the tree is no longer rebuilt the positions
and flags of the elements are not cleared when collapsing a row. This
caused hover highlights and selections on the collapsed child icons to
be incorrect in many cases.

For example, only the direct children of a collapsed element are drawn
inline. If any grandchild elements had been previously icon row flagged
they would continue to be evaluated as icon row elements despite being
hidden. In this case the x coordinates of the child and grandchild would
overlap causing selection to appear erratic.

Now the flags for inline row icons are explicitly cleared, which was
previously only done because the tree was rebuilt on collapsing rows.

Cleanup: Use LISTBASE_FOREACH macro in outliner code

No functional changes.

Fix T82288 Wintab walk navigation erratic.

Walk navigation relies on tablet data being set to detect if motion is
absolute. This patch sets tablet data in Ghost to dummy values when a
tablet pen is in range and not handled by Wintab processing.

UI: Don't use abbreviations in label text

Expand abbreviations for words like "Bright" (instead of "Brightness"),
"Premul", "Lib", "Dir", etc.

Differential Revision: https://developer.blender.org/D9862

Merge branch 'master' into sculpt-dev

Cleanup: Use abstraction for attribute math node input

Since creating the attribute node, a helper function has been added to
automatically get the input attribute or a constant value, depending on
the "input type" values for the node. This commit replaces the specific
implementation of that behavior with the new helper function.

The versioning is necessary since the node now has a "storage" struct.

Cleanup: renaming and code deduplication for color space clarity in picker

Ref T68926

Color Management: use scene linear HSV for number buttons in color pickers

Previously these HSV values were in the color picking space, which meant the
relation to the scene linear RGB values was confusing.

The new situation:
* RGB number buttons: scene linear color space
* HSV number buttons: scene linear color space
* Picker widgets: color picking color space
* Hex: sRGB color space

Fixes T69562, T83853, Ref T68926

Fix crash in combine proxies

Geometry Nodes: Point separate and attribute compare nodes

This patch adds two related nodes, a node for separating points
and mesh vertices based on a boolean attribute input, and a node
for creating boolean attributes with comparisons.

See the differential for an example file and video.

Point Separate (T83059)
The output in both geometries is just point data, contained in the mesh
and point cloud components, depending which components had data in the
input geometry. Any points with the mask attribute set to true will be
moved from the first geometry output to the second. This means that
for meshes, all edge and face data will be removed. Any point domain
attributes are moved to the correct output geometry as well.

Attribute Compare (T83057)
The attribute compare does the "Equal" and "Not Equal" operations by
comparing vectors and colors based on their distance from each other.
For other operations, the comparison is between the lengths of the
vector inputs. In general, the highest complexity data type is used
for the operation, and a new function to determine that is added.

Differential Revision: https://developer.blender.org/D9876

Merge branch 'master' into sculpt-dev

Merge remote-tracking branch 'origin/master' into geometry-nodes

Updated and extended Regression Testing frameworks (Gsoc 2020)

This revision contains the following changes-

- Updated the existing testing framework for Modifiers for Regression
Testing.
- Tests for Physics modifiers and remaining Generate and Deform modifiers are added.
- The existing `ModifierSpec` is updated with backward compatibility to support Physics Modifiers.
- Now there is support for frame number and giving nested parameters for attributes.
- Some Deform modifiers required Object Operators, e.g. "Bind" in Mesh Deform, so a new class was added to support that functionality.
- A separate class for holding Particles System, they are tested by converting all the particles to mesh and joining it to the mesh they were added.
- Updated the format to add tests for Bevel, Boolean and Operators as
well.

Reviewed By: zazizizou, mont29, campbellbarton

Differential Revision: https://developer.blender.org/D8507

Merge branch 'master' into soc-2020-testing-frameworks

Merge branch 'master' into greasepencil-object

Fix T83888: Ctrl F in Asset Browser crashes blender

In case of being in Asset browsing mode, the search field is located in
the header (RGN_TYPE_HEADER not RGN_TYPE_UI as for file browsing mode).
To be future proof, now iterate all regions and act if the
"filter_search" can be activated.

Maniphest Tasks: T83888

Differential Revision: https://developer.blender.org/D9882