This fixes T87666 and T83252.
The boolean modifier and geometry nodes can depend on the geometry
of an entire collection. Before, the modifiers had to manually create relations
to all the objects in the collection. This worked for the most part, but was
cumbersome and did not solve all issues. For example, the modifiers were not
properly updated when objects were added/removed from the referenced collection.
This commit introduces the concept of "collection geometry" in the depsgraph.
The geometry of a collection depends on the transforms and geometry of all
the objects in it. The boolean modifier and geometry nodes can now just depend
on the collection geometry instead of creating all the dependencies themselves.
Differential Revision: https://developer.blender.org/D11053
Though to my knowledge we haven't had a report about this yet, this
looks like a clear oversight-- the ids are just more data stored by the
instances component, and should be cleared and copied like other data.
This might have resulted in incorrect random IDs for instances in
renderers in some cases where the component had to be copied.
If an object named for example `Suzanne` is converted to Gpencil, a material called `Suzanne_Fill` will be created for the gpencil fill.
When this material already exists, the new material will be called `Suzanne_Fill.001` and the operator will not see that this material is already present the next iteration. This leads to a new material being created for every polygon.
This commit changes the code to search for a material starting with `ObjectName_Fill` instead of being equal to.
Reviewed By: filedescriptor, antoniov
Differential Revision: https://developer.blender.org/D11067
This reverts commit 9cce18a585.
rB9cce18a5858c broke the build in unforeseen ways, not easily fixable.
revert for now, so master will at least build again.
This is complex situation. Tagged ID deletion (used to delete several
data-blocks at once) removes IDs to be deleted from Main.
But when we remove deleted IDs' usages of other IDs (using
`BKE_libblock_relink_ex`), some specific post-process is required on
some types, like Collections. Those post-processes would in some cases
rely on data actually being in Main.
That failing condition would lead in existing code on missing processing
the very ID (collection) we were working on, leading to missing removing
some child collection pointers, leading to the crash (later on in
LayerCollection resync process).
For now we go with an optimization & fix that avoids processing all
collections in Main when we actually know which one we are working one
(case of `BKE_libblock_relink_ex`, but not of
`BKE_libblock_remap_locked`).
This is however yet another demonstration of the need to rework that
whole collection/layer resync process, since it is not only extremely
inneficient currently, but it also requires valid Main/ID state way too
deep into the remapping code.
NOTE: This fix may very well not catch/address all possible fail cases
here, dealing with the double parent/child relationships of collections
is challenging...
Issue reported by @eyecandy from the studio, thanks.
Previously we always had to set attribute values after creating
the attribute. This patch adds an initializer argument to
`attribute_try_create` which can fill it in a few ways, which
are explained in code comments.
This fixes T87597.
Differential Revision: https://developer.blender.org/D11045
Because we use virtual classes (and for other reasons), we had to do a
small allocation when simply retrieving the data type and domain of an
existing attribute. This happened quite a lot actually-- to determine
these values for result attributes.
This patch adds a simple function to retrieve this meta data without
building the virtual array. This should lower the overhead of every
attribute node, though the difference probably won't be noticible
unless a tree has very many nodes.
Differential Revision: https://developer.blender.org/D11047
The `bisect_distance` in the mirror modifier was hard-coded to `0.001`.
This would result in some unexpected behavior like vertices close
to the mirror plane being deleted or merged.
The fix now adds a parameter to the mirror modifier to expose the
bisect distance to the user. The default is set to the previous
hard-coded value to not "change" previous files.
Ref D10201
Python scripts can now define the reason it's poll function fails using:
`Operator.poll_message_set(message, ...)`
This supports both regular text as well as delaying message creation
using a callback which should be used in situations where constructing
detailed messages is too much overhead for a poll function.
Ref D11001
Some persistent data code was disable due to a deeper design issue, which
meant some updates were not communicated to renderers.
Dependency graph updates work in two passes, once where Blender scene
animation updates are done, then app handler scripts can run to make further
scene modifications, and then the depsgraph is updated again to take those
into account.
Previously the viewport would update renderers twice when such app handler
scripts were present. Now both viewport and persistent data rendering update
the renderers only once, accumulating updates from both passes.
This is a first iteration of a switch node. It can only switch between
two inputs values based on a boolean. A more sophisticated switch
node that has an integer selector will probably come later.
Currently, the geometry nodes evaluator does not support lazy evaluation
of individual inputs. Therefore, all inputs will be computed currently.
An improvement to the evaluator will be worked on separately.
Ref: T85374
Differential Revision: https://developer.blender.org/D10460
A virtual array is a data structure that is similar to a normal array
in that its elements can be accessed by an index. However, a virtual
array does not have to be a contiguous array internally. Instead, its
elements can be layed out arbitrarily while element access happens
through a virtual function call. However, the virtual array data
structures are designed so that the virtual function call can be avoided
in cases where it could become a bottleneck.
Most commonly, a virtual array is backed by an actual array/span or
is a single value internally, that is the same for every index.
Besides those, there are many more specialized virtual arrays like the
ones that provides vertex positions based on the `MVert` struct or
vertex group weights.
Not all attributes used by geometry nodes are stored in simple contiguous
arrays. To provide uniform access to all kinds of attributes, the attribute
API has to provide virtual array functionality that hides the implementation
details of attributes.
Before this refactor, the attribute API provided its own virtual array
implementation as part of the `ReadAttribute` and `WriteAttribute` types.
That resulted in unnecessary code duplication with the virtual array system.
Even worse, it bound many algorithms used by geometry nodes to the specifics
of the attribute API, even though they could also use different data sources
(such as data from sockets, default values, later results of expressions, ...).
This refactor removes the `ReadAttribute` and `WriteAttribute` types and
replaces them with `GVArray` and `GVMutableArray` respectively. The `GV`
stands for "generic virtual". The "generic" means that the data type contained
in those virtual arrays is only known at run-time. There are the corresponding
statically typed types `VArray<T>` and `VMutableArray<T>` as well.
No regressions are expected from this refactor. It does come with one
improvement for users. The attribute API can convert the data type
on write now. This is especially useful when writing to builtin attributes
like `material_index` with e.g. the Attribute Math node (which usually
just writes to float attributes, while `material_index` is an integer attribute).
Differential Revision: https://developer.blender.org/D10994
`ob->runtime.geometry_set_eval` can contain instances as well.
This only affected instances generated by geometry nodes.
We should probably have a separate function that tells us if an object
has instances or not..
In the past, custom attributes were rarely used in practice, because the
only way to use them was from Python. Since geometry nodes, more
users started to add their own attributes. Those attributes should not
be removed automatically. It is still possible to remove them in
geometry nodes explictly to improve performance.
This changes the following items:
- package name is now `blender-3.0.0-git.09eb04c0a865-windows64`
rather than `blender-3.00.0-git.09eb04c0a865-windows64`
- Fix version resource for blender.exe not building
- Data directories are now `3.0\...` rather than `3.00\....`
- User prefs are now in:
`c:\Users\users\AppData\Roaming\Blender Foundation\Blender\3.0\`
rather than:
`c:\Users\users\AppData\Roaming\Blender Foundation\Blender\3.00\`
- Updating startup & preferences from previous release
has a special exception for 3.0 to check for 3.93 and older.
See T87532
Ref D10986
Blender 3.0 is now in bcon1 (alpha).
There are likely a few places in Blender and the automated building pipeline
that may fail since we are switching our versioning number system.
For example, at the moment the splash and the status bar are showing
3.00.0, and it should show 3.1.0.
I suspect the Python API, version used to report a bug, buildname, are
all wrong too. These will be handled later.
