wi is the viewing direction, and wo is the illumination direction. Under this notation, BSDF sampling always samples from wi and outputs wo, which is consistent with most of the papers and mitsuba. This order is reversed compared with PBRT, although PBRT also traces from the camera.
In case there is only 1 key on the FCurve,
the operator can run into a situation where it divides by 0.
It now skips the curve in that case
Reviewed by: Sybren A. Stüvel
Differential Revision: https://developer.blender.org/D16982
Ref: D16982
Added an extrude mode enum to the trim operators to
control extrusion: "project" and "fixed." "Fixed" just
extrudes along a fixed normal and is the new default.
**Changes**
As described in T93602, this patch removes all use of the `MVert`
struct, replacing it with a generic named attribute with the name
`"position"`, consistent with other geometry types.
Variable names have been changed from `verts` to `positions`, to align
with the attribute name and the more generic design (positions are not
vertices, they are just an attribute stored on the point domain).
This change is made possible by previous commits that moved all other
data out of `MVert` to runtime data or other generic attributes. What
remains is mostly a simple type change. Though, the type still shows up
859 times, so the patch is quite large.
One compromise is that now `CD_MASK_BAREMESH` now contains
`CD_PROP_FLOAT3`. With the general move towards generic attributes
over custom data types, we are removing use of these type masks anyway.
**Benefits**
The most obvious benefit is reduced memory usage and the benefits
that brings in memory-bound situations. `float3` is only 3 bytes, in
comparison to `MVert` which was 4. When there are millions of vertices
this starts to matter more.
The other benefits come from using a more generic type. Instead of
writing algorithms specifically for `MVert`, code can just use arrays
of vectors. This will allow eliminating many temporary arrays or
wrappers used to extract positions.
Many possible improvements aren't implemented in this patch, though
I did switch simplify or remove the process of creating temporary
position arrays in a few places.
The design clarity that "positions are just another attribute" brings
allows removing explicit copying of vertices in some procedural
operations-- they are just processed like most other attributes.
**Performance**
This touches so many areas that it's hard to benchmark exhaustively,
but I observed some areas as examples.
* The mesh line node with 4 million count was 1.5x (8ms to 12ms) faster.
* The Spring splash screen went from ~4.3 to ~4.5 fps.
* The subdivision surface modifier/node was slightly faster
RNA access through Python may be slightly slower, since now we need
a name lookup instead of just a custom data type lookup for each index.
**Future Improvements**
* Remove uses of "vert_coords" functions:
* `BKE_mesh_vert_coords_alloc`
* `BKE_mesh_vert_coords_get`
* `BKE_mesh_vert_coords_apply{_with_mat4}`
* Remove more hidden copying of positions
* General simplification now possible in many areas
* Convert more code to C++ to use `float3` instead of `float[3]`
* Currently `reinterpret_cast` is used for those C-API functions
Differential Revision: https://developer.blender.org/D15982
(MacOS) only: In the System tab of the user preferences the user has the
ability to select a GPU backend that Blender will use. After changing
the GPU backend setting, the user has to restart Blender before the
setting is used.
It was added to start collecting feedback on the Metal backend without
using the command lines.
By default Blender will select OpenGL as backend. When Metal is selected
(via `--gpu-backend metal` or via user preferences) OpenGL will be used as
fallback when the platform isn't capable of running Metal.
When applying the "Bake Action" operator in pose mode
it could throw an error saying "Nothing to Bake"
even though bones are selected
That is because the code was looking for a selected armature
But in Pose Mode, clicking into empty space to de-select would also
deselect the armature.
Then box selecting would not make the armature selected again
Reviewed by: Sybren A. Stüvel
Differential Revision: https://developer.blender.org/D16593
Previously when using the "Jump To Keyframe" operator
in conjunction with subframes, the decimal part would be kept.
Meaning that it wouldn't jump exactly to the frame.
This fix also makes it so it is possible to jump to keyframes
that are on subframes.
Reviewed by: Sybren
Differential Revision: https://developer.blender.org/D16595
Replace our Noto Sans CJK with a version that has Simplified Chinese
set as the default script.
See D16426 for details and examples
Differential Revision: https://developer.blender.org/D16426
Reviewed by Brecht Van Lommel
Replacement of our Hebrew font, which has bad variable weight default.
See D15846 for more details.
Differential Revision: https://developer.blender.org/D15846
Reviewed by Brecht Van Lommel
When allocating new `CustomData` layers, often we do redundant
initialization of arrays. For example, it's common that values are
allocated, set to their default value, and then set to some other
value. This is wasteful, and it negates the benefits of optimizations
to the allocator like D15082. There are two reasons for this. The
first is array-of-structs storage that makes it annoying to initialize
values manually, and the second is confusing options in the Custom Data
API. This patch addresses the latter.
The `CustomData` "alloc type" options are rearranged. Now, besides
the options that use existing layers, there are two remaining:
* `CD_SET_DEFAULT` sets the default value.
* Usually zeroes, but for colors this is white (how it was before).
* Should be used when you add the layer but don't set all values.
* `CD_CONSTRUCT` refers to the "default construct" C++ term.
* Only necessary or defined for non-trivial types like vertex groups.
* Doesn't do anything for trivial types like `int` or `float3`.
* Should be used every other time, when all values will be set.
The attribute API's `AttributeInit` types are updated as well.
To update code, replace `CD_CALLOC` with `CD_SET_DEFAULT` and
`CD_DEFAULT` with `CD_CONSTRUCT`. This doesn't cause any functional
changes yet. Follow-up commits will change to avoid initializing
new layers where the correctness is clear.
Differential Revision: https://developer.blender.org/D15617
This introduces a new `UI_MT_button_context_menu` class which is
registered at startup. Addons can append/prepend draw functions to this
class, in order to add their custom context menu entries.
The new class replaces the old `WM_MT_button_context` class, thus
requiring a small change in addons using this feature. This is done
because addons were previously required to register the class
themselves, which caused addons to override each other's context menu
entries.
Now the class registration is handled by Blender, and addons need only
append their draw functions. The new class name ensures that addons
using the old method don't override menu entries made using the new
class.
Menu entries added with the legacy `WM_MT_button_context` class are
still drawn for backwards compatibility, but this class must not be used
going forward, as any addon using it still runs the risk of having its
menu entries overridden, and support for the legacy class is subject to
removal in a future version.
Reviewed By: campbellbarton
Maniphest Tasks: T100423
Differential Revision: https://developer.blender.org/D15702
Remove "Material Icons" font file, mistakenly added.
See D15627 for details
Differential Revision: https://developer.blender.org/D15627
Reviewed by Brecht Van Lommel
Replace our existing two fonts with a stack of new fonts to increase
and improve language coverage and to add many new symbols and icons.
Covers glyphs of top 44 languages - 1.5 billion more potential users.
See D10887 for lots of details.
Differential Revision: https://developer.blender.org/D10887
Reviewed by Brecht Van Lommel
openSubdiv_init() would detect available evaluators before any OpenGL context
exists, causing a crash with libepoxy. This test however is redundant as we
already check the requirements on the Blender side through the GPU API.
To simplify things, completely remove the device detection in the opensubdiv
module and reduce the evaluators to just CPU and GPU. The plan here is to move
to the GPU module abstraction over OpenGL/Metal/Vulkan and so all these
different backends no longer make sense.
This also removes the user preference for OpenSubdiv compute device, which was
not used for the new GPU subdivision implementation.
Ref D15291
Differential Revision: https://developer.blender.org/D15470
The scene spacing code was failing to
check if a raycast failed, which can happen
when sculpting the edges of objects in negative
mode.
Note I removed what I suspect was a hack put
in to fix this, spacing was clamped
to 0.001 scene units.
Scene spacing mode is actually quite broken,
so it will be fixed in a series of phases.
Adds a better name that describes when it is used.
The GPU_SHADER_BUILDER is a buildtime tool for developers
to pre-validate GLSL (and in the overseen future pre-compile to
SpirV). We don't see that this needs to become a required
step in the future so WITH_GPU_BUILDTIME_SHADER_BUILDER
is more descriptive name.
The objects making up each icon are placed in a group named after the icon
coordinates in the grid. This change has no impact on the current pipeline used
to include icons in a Blender build, but lays the foundation to explore other
workflows to do that, and tidies up the file.
Differential Revision: https://developer.blender.org/D15251
By now I'm not aware of any serious regressions or missing functionality
in the C++ based OBJ importer/exporter. They have more features (vertex colors
support), and are way faster than the Python based importer/exporter.
Reviewed By: Thomas Dinges, Howard Trickey
Differential Revision: https://developer.blender.org/D15360
This commit adds a new face nearest snapping mode, adds new snapping
options, and (lightly) refactors code around snapping.
The new face nearest snapping mode will snap transformed geometry to the
nearest surface in world space. In contrast, the original face snapping
mode uses projection (raycasting) to snap source to target geometry.
Face snapping therefore only works with what is visible, while nearest
face snapping can snap geometry to occluded parts of the scene. This new
mode is critical for retopology work, where some of the target mesh
might be occluded (ex: sliding an edge loop that wraps around the
backside of target mesh).
The nearest face snapping mode has two options: "Snap to Same Target"
and "Face Nearest Steps". When the Snap to Same Object option is
enabled, the selected source geometry will stay near the target that it
is nearest before editing started, which prevents the source geometry
from snapping to other targets. The Face Nearest Steps divides the
overall transformation for each vertex into n smaller transformations,
then applies those n transformations with surface snapping interlacing
each step. This steps option handles transformations that cross U-shaped
targets better.
The new snapping options allow the artist to better control which target
objects (objects to which the edited geometry is snapped) are considered
when snapping. In particular, the only option for filtering target
objects was a "Project onto Self", which allowed the currently edited
mesh to be considered as a target. Now, the artist can choose any
combination of the following to be considered as a target: the active
object, any edited object that isn't active (see note below), any non-
edited object. Additionally, the artist has another snapping option to
exclude objects that are not selectable as potential targets.
The Snapping Options dropdown has been lightly reorganized to allow for
the additional options.
Included in this patch:
- Snap target selection is more controllable for artist with additional
snapping options.
- Renamed a few of the snap-related functions to better reflect what
they actually do now. For example, `applySnapping` implies that this
handles the snapping, while `applyProject` implies something entirely
different is done there. However, better names would be
`applySnappingAsGroup` and `applySnappingIndividual`, respectively,
where `applySnappingIndividual` previously only does Face snapping.
- Added an initial coordinate parameter to snapping functions so that
the nearest target before transforming can be determined(for "Snap to
Same Object"), and so the transformation can be broken into smaller
steps (for "Face Nearest Steps").
- Separated the BVH Tree getter code from mesh/edit mesh to its own
function to reduce code duplication.
- Added icon for nearest face snapping.
- The original "Project onto Self" was actually not correct! This option
should be called "Project onto Active" instead, but that only matters
when editing multiple meshes at the same time. This patch makes this
change in the UI.
Reviewed By: Campbell Barton, Germano Cavalcante
Differential Revision: https://developer.blender.org/D14591
Part of T98560.
See https://wiki.blender.org/wiki/Source/Interface/Views
Adds all the basic functionality needed for grid views. They display
items in a grid of rows and columns, typically with a preview image and
a label underneath. Think of the main region in the Asset Browser.
Current features:
- Active item
- Notifier listening (also added this to the tree view)
- Performance: Skip adding buttons that are not scrolled into view
(solves performance problems for big asset libraries, for example).
- Custom item size
- Preview items (items that draw a preview with a label underneath)
- Margins between items scale so the entire region width is filled with
column, rather than leaving a big empty block at the right if there's
not enough space for another column (like the File and current Asset
Browser does it).
- "Data-View Item" theme colors. Not shown in the UI yet.
No user visible changes expected since the grid views aren't used for
anything yet.
This was developed as part of a rewrite of the Asset Browser UI
(`asset-browser-grid-view` branch), see T95653. There's no reason to
keep this part in a branch, continuing development in master makes
things easier.
Grid and tree views have a lot of very similar code, so I'm planning to
unify them to a degree. I kept things separate for the start to first
find out how much and what exactly makes sense to override.
I'm using the tool icons for the brush themselves.
Note: This includes a few brushes that are only defined in D15134.
Those are simply the icons rendered with a world background of #282828.
More information in the svn log. But basically the smooth brush
is re-using the previous one we had for hair, and the density is
representing the hair root points that are removed to reach the
desired density.
Those brushes are used by D15134.
A typical use case is when you want to render with the Filmic view transform, but
composite an existing image in the background that should not be affected by the
view transform.
With this colorspace it's possible to do an inverse Filmic transform, render
everything in scene linear space, and then apply the Filmic transform again.
This is pretty basic in that this is not going to take into account the full view
transform including looks, curves and exposure. But it can be helpful anyway.
Ref T68926
It can be assumed that all scripts comply with basic pep8 formatting
regarding white-space, indentation etc.
Also remove note in best practices page & update `tests/python/pep8.py`.
If we want to exclude some scripts from make format,
this can be done by adding them to `ignore_files` in:
source/tools/utils_maintenance/autopep8_format_paths.py
Or using `# nopep8` for to ignore for individual lines.
Ref T98554
Removed OPTYPE_UNDO flags from the swap brush colors and
sample color operators. These types of operators are
not supposed to be undoable in the first place. Also
memfile undo is too buggy for it.
