Replace `bNodeInstanceHash` with a `Map`. Move it to the node tree
runtime data. Simplify some code by removing the tag from the hash
value and collecting unused previews directly. Then just remove a
bunch of code that's now unused.
Note that texture node previews haven't been working for a while
anyway, and the experimental shader node previews seem to use
a different system (this one is a remnant of Blender Internal).
Pull Request: https://projects.blender.org/blender/blender/pulls/135310
Adds the option to create a boolean socket that can be used as a panel toggle.
This allows creating simpler and more compact node group UIs when a panel
can be "disabled".
The toggle input is a normal input socket that is just drawn a bit differently in
the UI. Whether a boolean is a toggle input or not does not affect evaluation.
Also see #133936 for guides on how to add and remove panel toggles.
Pull Request: https://projects.blender.org/blender/blender/pulls/133936
Currently, when selecting a file path using the file browser opened from the
node socket, there is no filter active making it harder than necessary to find
the correct file. This patch adds the proper filter. Something similar is done
when using e.g. the gltf import from the menu.
Supporting this requires changes in a bunch of places:
* `StringPropertyRNA` now has a callback that returns the file path pattern.
This has to be a callback, because the same property is used on all file path
sockets, but the valid extension depends on the node.
* The string socket declaration also has the optional path pattern. This can be
set in the node declarations.
Pull Request: https://projects.blender.org/blender/blender/pulls/134931
Previously, the code would assert in `BLI_fopen` when the path is relative.
There are two main options to make the path absolute:
1. Always use the path of the current .blend file as base.
2. Is the path of the .blend file "owns" the current node as base. So when
the Import node is part of a linked node tree, the path of the linked .blend
file is used as base.
Both options are useful depending on the specific use-case, but the latter
seems more consistent with other places in Blender. For more advanced
functionality, we might need nodes that give the current .blend file path
and one node to join paths.
Pull Request: https://projects.blender.org/blender/blender/pulls/134794
Restriction of the nodes api to clearly define never-null function arguments.
Side effects: some assertions and null-check (with early return) were removed.
On the caller side is ensured to never derefer null to pass argument (mainly in RNA).
In addition, one pointer argument now actually a return type.
By-reference return types instead of pointers going to be separate kind of
change since also imply of cleaning up variables created from reference.
Also good future improvement would be to mark a copy-constructor as
explicit for DNA node types.
Pull Request: https://projects.blender.org/blender/blender/pulls/134627
Collapsing curves to a single point when just resampling is unexpected. This
patch changes it so that non-zero-length curves keep at least one segment.
The fix is fairly straight forward, but a bunch of additional code is added to
support the legacy option to avoid breaking backward compatibility.
Pull Request: https://projects.blender.org/blender/blender/pulls/133659
In setups where only very few elements are processed at once, the lazy-threading
hints that come from `parallel_for` are not triggered. However, often it can
still be worth to use multi-threading in such cases. Therefore, we need to find
additional places where the lazy-threading hints are sent. There are many
possibilities and we probably have to add them step by step as we find .blend
files that show missing multi-threading.
In this patch I choose to send the hint at the beginning of evaluating a repeat
zone if it has 10 or more iterations. The exact number here is just a guess and
could be fine tuned over time if necessary.
A slightly modified version of the file in #134230 speeds up from ~1100ms to
~100ms with this change. The exact speedup changes quite a bit each run, but is
always between 5 and 20x, so it's quite noticable.
Pull Request: https://projects.blender.org/blender/blender/pulls/134408
Move `Library.runtime` to be a pointer, move the related
`LibraryRuntime` struct to `BKE_library.hh`. Similar to e.g.
Mesh.runtime, that pointer is expected to always be valid, and is
allocated at readtime or when creating a new Library ID.
Related smaller changes:
* Write code now uses standard ID writing codepath for Library IDs too.
* Runtime pointer is reset to nullptr before writing.
* Looking up a library by its absolute path is now handled through a
dedicated utils, `search_filepath_abs`, instead of using
`BLI_findstring`.
Pull Request: https://projects.blender.org/blender/blender/pulls/134188
Currently UI code always has to use char pointers when interacting with
the translation system. This makes benefiting from the use C++ strings
and StringRef more difficult. That means we're leaving some type safety
and performance on the table. This PR adds StringRef overloads to the
translation API functions and removes the few calls to `.c_str()` that
are now unnecessary.
Pull Request: https://projects.blender.org/blender/blender/pulls/133887
The issue was that the code did not handle input sockets that are fields
implicitly correctly. It just retrieved a single from them, instead of
treating them as having an unknown value.
The new Object and Collection constant geometry nodes do not register their dependency on their targets.
This causes the graph not to update properly when they are modified.
Pull Request: https://projects.blender.org/blender/blender/pulls/133784
The File Output node sometime ignores the transformations of their
inputs. That's due to the fact that transforms are now delayed and the
File Output node does not realize its inputs on its domain in case it
was not multi-layer.
To fix this, add another realization mode for transforms only. And use
that in the File Output node, as well as the Bokeh Blur, UV Map, and
Plane Track Deform, which also need this fix.
Pull Request: https://projects.blender.org/blender/blender/pulls/133850
Previously, there was a `StringRef.copy` method which would copy the string into
the given buffer. However, it was not defined for the case when the buffer was
too small. It moved the responsibility of making sure the buffer is large enough
to the caller.
Unfortunately, in practice that easily hides bugs in builds without asserts
which don't come up in testing much. Now, the method is replaced with
`StringRef.copy_utf8_truncated` which has much more well defined semantics and
also makes sure that the string remains valid utf-8.
This also renames `unsafe_copy` to `copy_unsafe` to make the naming more similar
to `copy_utf8_truncated`.
Pull Request: https://projects.blender.org/blender/blender/pulls/133677
The issue is that the localized node tree has an invalid type if the linked file
is not available. So we essentially ended up with a geometry node group that
contains a group node that points to a non-geometry nodes group.
Pull Request: https://projects.blender.org/blender/blender/pulls/133650
This builds on top of 80441190c6 to gray output
unused inputs of the Mix and Mix Shader node. These nodes have unused inputs if
their mix factor is 0 or 1 (+ some special cases for non-uniform vector mixing
and blend modes).
Pull Request: https://projects.blender.org/blender/blender/pulls/133369
This patch automatically grays out input values which can't affect the output
currently. It works with inputs of group nodes, geometry nodes modifiers and
node tools.
To achieve this, it analyses the node tree and partially evaluates it to figure
out which group inputs are currently not linked to an output or are disabled by e.g.
some switch node.
Original proposal: https://devtalk.blender.org/t/dynamic-socket-visibility/31874
Related info in blog post:
https://code.blender.org/2023/11/geometry-nodes-workshop-november-2023/#dynamic-socket-visibility
Follow up task for designing a UI that allows hiding sockets: #132706
Limitations:
* The inferencing does not update correctly when a socket starts being
animated/driven. I haven't found a good way to invalidate the cache in a good
way reliably yet. It's only a very short term problem though. It fixes itself
after the next modification of the node tree and is only noticeable when
animating some specific sockets such as the switch node condition.
* Whether a socket is grayed out is not exposed in the Python API yet. That will
be done separately.
* Only a partial evaluation is done to determine if an input affects an output.
There should be no cases where a socket is found to be unused when it can actually
affect the output. However, there can be cases where a socket is inferenced to be used
even if it is not due to some complex condition. Depending on the exact circumstances,
this can either be improved or the condition in the node tree should be simplified.
Pull Request: https://projects.blender.org/blender/blender/pulls/132219
This uses the following accessor methods in more places in more places:
`is_group()`, `is_group_input()`, `is_group_output()`, `is_muted()`,
`is_frame()` and `is_reroute()`.
This results in simpler code and reduces the use of `bNode.type_legacy`.
Pull Request: https://projects.blender.org/blender/blender/pulls/132899
Main goals of this refactor:
* Make it more obvious which update function should be used.
* Make it more obvious which parameters are required by using references instead
of pointers.
* Support passing in multiple modified trees instead of just a single one.
No functional changes are expected.
Pull Request: https://projects.blender.org/blender/blender/pulls/132862
The new description for `bNode.type_legacy`:
```
/**
* Legacy integer type for nodes. It does not uniquely identify a node type, only the `idname`
* does that. For example, all custom nodes use #NODE_CUSTOM but do have different idnames.
* This is mainly kept for compatibility reasons.
*
* Currently, this type is also used in many parts of Blender, but that should slowly be phased
* out by either relying on idnames, accessor methods like `node.is_reroute()`.
*
* A main benefit of this integer type over using idnames currently is that integer comparison is
* much cheaper than string comparison, especially if many idnames have the same prefix (e.g.
* "GeometryNode"). Eventually, we could introduce cheap-to-compare runtime identifier for node
* types. That could mean e.g. using `ustring` for idnames (where string comparison is just
* pointer comparison), or using a run-time generated integer that is automatically assigned when
* node types are registered.
*/
```
Pull Request: https://projects.blender.org/blender/blender/pulls/132858
This removes the second to last usage of `NOD_static_types.hh` which we intend
to remove. A nice benefit is that the idname is now finally more explicit when a
node is registered. Previously it was difficult to search for the definition of
a node in the code when one had only the idname, which is the main identifier
for nodes.
The main change is in `node_type_base`.
Pull Request: https://projects.blender.org/blender/blender/pulls/132815
As part of an effort to remove this header, reducing the need for macro/
include magic and making node definitions more independent, move
the node UI name and description definitions to each node's file.
The UI name, description, and idname are also moved to std::string
instead of char arrays.
Similar to b43e2168e3.
Pull Request: https://projects.blender.org/blender/blender/pulls/132708
Two places had to be fixed to support this:
* `RNA_property_enum_get_default` needs to handle the case when the property is
backed by an `IDProperty`. This is just like in
`RNA_property_float_get_default`.
* The default value has to be copied from the node group interface to the
geometry nodes modifier inputs.
Pull Request: https://projects.blender.org/blender/blender/pulls/132740
Make the type structs non-trivial, use new and delete for allocation and
freeing, and use std::string for most strings they contain. Also use
StringRef instead of char pointers in a few places. Mainly this improves
ergonomics when working with the strings.
Pull Request: https://projects.blender.org/blender/blender/pulls/132750
Any reroute can be connected only to single source, or can be not connected at
all. So reroutes usually form trees. It is possible that there will be a cycle,
but such cycle can be only single in strongly connected set of reroutes. To
propagate a types from some certain target to all the reroutes in such a tree we
need to know all such a trees and all possible targets for each tree.
Before its was done with a stack-base breath first search and with implicit aim
to a targets of types to propagate.
Now everything is done explicitly, with grouping all reroutes to a strongly
connected sets. All source targets are handled now explicitly, which lets us to
use additional function to define priority between types later. Large number of
loops can be parallel, and as-is code 2-3 times faster for large node trees like
main tree in `Erindale_Flower_Shop` file.
Now possible change of the behavior:
1. For multiple targets use function to decide the most priority type.
2. In case of merge non-connected rerouted sets use statistic to decide the most
popular type.
3. Change behavior in case there is no explicit targets (dangling reroutes set).
Pull Request: https://projects.blender.org/blender/blender/pulls/131910
