Blender Git Loki

Fix crash exiting edit-mode with an active basis shape key

Exposed by T71865, while the bug remains this resolves the crash.

Clay Brush: Input curves and update defaults

Updated defaults and pressure/size curves for the Clay brush.

Reviewed By: jbakker

Differential Revision: https://developer.blender.org/D6298

Sculpt: Sample Voxel Size

This adds support to the current sculpt sample detail operator to sample
a voxel size for the voxel remesher when sculpting on regular meshes.

It provides an approximation of a voxel size that is going to preserve
the sampled sculpt details after remeshing. It is not going to be 100%
accurate in all cases as it relies on having consistent edge length in
the whole sculpt, but it saves a lot of time and avoids guessing the
voxel size by trying different values.

Reviewed By: jbakker

Differential Revision: https://developer.blender.org/D6251

Sculpt/Paint: Remove Unified SIZE_PRESSURE and ALPHA_PRESSURE

The relation between the pressure/size and the pressure/alpha is a
fundamental property that defines the behavior of a brush, so it does
not make sense to have it unified across all brushes. This applies both
for sculpting and painting.

Some of the new 2.82 brushes need pressure/size or pressure/alpha to be
enabled to work propely, while others don't. Users should not be
switching on and off this property manually when changing brushes if they
want to use unified size. This is also causing that some users are using
the brushes with an incorrect configuration.

Reviewed By: jbakker

Differential Revision: https://developer.blender.org/D6291

Sculpt/Paint: Move Elastic Deform Kelvinlets to BKE

After this commit it should be possible to share the same deformation
formulas that are used in the Elastic Deform brush with other areas of
Blender such as Grease Pencil or proportional editing.

This also removes a lot of code from sculpt.c that is not direclty
related to sculpting.

Reviewed By: jbakker

Differential Revision: https://developer.blender.org/D6281

Fix T71667: Use the Sculpt Mesh API in the Multires Smooth brush

This removes all multires code from the smooth brush and replaces it
with a new implementation that uses the sculpt mesh API. This makes the
code much easier to understand and maintain.

We could unify all the smooth brushes into a single implementation, but
mesh smoothing has code to deal with open boundaries that I don't want
to remove yet.

Most bugs and artifacts related to access neighbor grids should be fixed
(like T71667). This also fixes performance bugs such as T70689, that were
related to grid stitching after applying the brush.

Reviewed By: jbakker

Maniphest Tasks: T71667

Differential Revision: https://developer.blender.org/D6277

Fix T71868: Clay Strips brush collapsed geometry

We are now modifying the relation between pressure and radius using
custom functions to improve the brushes, but dyntopo was not prepared
for this. This fix sends the unmodified radius to dyntopo so it modifies
the geometry correctly.

Reviewed By: jbakker

Maniphest Tasks: T71868

Differential Revision: https://developer.blender.org/D6299

Fix typo in versiong code

Text Object: change spacing now operates on selection

Without this, it's not practical to change spacing on large
blocks of text.

Cleanup: Remove BIF_gl.h

BIF_gl.h included hacks like redefining glew functions and a constant.
The named constant `GLA_PIXEL_OFS` has been moved to `GPU_viewport.h`

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D5860

Workbench: Performance

Small performance improvements by caching the world_ubo in the World.
It was detected that NVIDIA driver created threads to update the
world_ubo (304 bytes). This patch will reuse the previous created
ubo when not changed.

Reviewed By: fclem

Differential Revision: https://developer.blender.org/D6087

Curve: CurveMapping Extend Option

Extend options are currently stored per curve. This was not clearly
communicated to the user and they expected this to be a setting per
CurveMapping.

This change will move the option from `Curve` to `CurveMapping`. In
order to support this the API had to be changed.

BPY: CurveMap.evaluate is also moved to CurveMapping.evaluate what
breaks Python API. Cycles has been updated but other add-ons have
not. After release of 2.81 we can merge this to master and adapt
the add-ons.

Reviewed By: campbellbarton

Differential Revision: https://developer.blender.org/D6169

Add 'EDBM_selectmode_disable_multi' and use in knifeproject

As a followup to rB6f4e595e9ba9 and as per @campbellbarton suggestion,
this adds EDBM_selectmode_disable_multi, similar to
EDBM_mesh_deselect_all_multi & EDBM_mesh_deselect_all, so other similar
uses don't need to be done in a loop.

Also, selected_objects isn't a reliable way to handle this case - since
objects can be in edit-mode & not selected, use
BKE_view_layer_array_from_bases_in_edit_mode_unique_data instead

Differential Revision: https://developer.blender.org/D6317

RenderViewport: Texture Format

When doing viewport rendering the color management happens on the CPU.
This has overhead in downloading a float texture from the gpu and
performing color management on the CPU.

Based on the scene fileformat bit depth the result will be rendered to
a byte texture where the colormanagement happens on the GPU or a float
texture where the colormanagement happens on the CPU.

This is only done during `Viewport Render Animation` in other
cases a float texture is being used.

Baseline (HD render of wanderer.blend workbench engine no samples) 15.688038 s
After changes: 9.412880s

Reviewed By: fclem

Differential Revision: https://developer.blender.org/D6195

EEVEE: GLSL Renderpasses

Most of the renderpasses in EEVEE used post-processing on the CPU. For
final image rendering this is sufficient, but when we want to display
the data to the user we don't want to transfer to the CPU to do post
processing to then upload it back to the GPU to display the result.

This patch moves the renderpass postprocessing to a GLSL shader.

This is the first step to do, before we will enable the renderpasses in the viewport.

Reviewed By: fclem

Differential Revision: https://developer.blender.org/D6206

EEVEE: Renderlayer artifacts

When rendering the Subsurface scattering lighting render layer with high
sample count render artifacts can appear. This patch will remove these
render artifacts by using a more precise texture format when samples
will be larger than 128. As with the new eevee-shadows it is more common
to use higher number of samples.

The reason why it was visible in the subsurface scattering is that every
sample could change the color. Adding different values will reduce
precision over the number of samples.

The subsurface color render layer also has this issue, but it is not noticeable as
the colors tend to be close to each other so the colors would
most of the time just shift the precision and hold up better.

Reviewed By: fclem

Differential Revision: https://developer.blender.org/D6245

Cleanup: move space text vars into a runtime struct

Also use more descriptive names.

Fix T30941: Add cloth air pressure simulation

This adds some basic simulation of internal air pressure inside of
closed cloth mesh objects.

Reviewed By: Jacques Lucke

Differential Revision: https://developer.blender.org/D5473

Clean/Fix remaining cases of props assignments in resgistrable structs def.

We still had a few deprecated assignements of `bpy.props.xxx` to class
members in our API documentation and one of our py tests. Annotations
are to be used now.

Also remove the section about `register_module` utils, this has been
removed in 2.8.

Fix T71877: Python API overview sample code warning: class MyMaterialProps contains a property which should be an annotation!
Fix T71876: Python API overview references old bpy.utils.register_module function

Fix T71864: Broken 'Select' > 'More' in face mode in UV Editor

Caused by rBeead6a604602.

Above commit didnt account for different element types being tagged (face
select mode tagged faces, others tagged loops) and always flushed from
loops.

Now restore to flush from faces if we are in face select mode.

Maniphest Tasks: T71864

Differential Revision: https://developer.blender.org/D6315