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
This reverts commit afec64739a.
The commit introduces a regression where opening the Asset Browser opens
the File Browser instead, same for other editor sub-types, see
blender/blender#134630.
blender/blender!134642 proposes a different solution and reverts this,
which I prefer too. Better to the revert separately from trying a
different fix for the initial bug, makes reviewing easier too.
Node region is not tagged to redraw when animation slot is changed.
`action_slot` RNA prop has `NC_ANIMATION`notifier set, use the same in
`node_region_listener` to tag region redraw.
Pull Request: https://projects.blender.org/blender/blender/pulls/134435
When needing a friendly title and icon for windows and screen areas we
use SpaceType callbacks. For Node editors this could crash for custom
node trees that are unregistered. node_tree_type_find returns nullptr
since this custom tree type is not in the map. In this case just return
translated "Node Editor".
Pull Request: https://projects.blender.org/blender/blender/pulls/134692
This implements the memorization of the previous state of a space's
subtype for those that have multiple modes. Introduces an optional
space_subtype_prev_get callback, implemented for SPACE_ACTION,
SPACE_FILE, SPACE_GRAPH, SPACE_IMAGE and SPACE_NODE. This means we
can always return to the previous mode.
Pull Request: https://projects.blender.org/blender/blender/pulls/133846
This patch allows the compositor context to specify exactly which
outputs it needs, selecting from: Composite, Viewer, File Output, and
Previews. Previously, the compositor fully executed if any of those were
needed, without granular control on which outputs are needed exactly.
For the viewport compositor engine, it requests Composite and Viewer,
with no Previews or File Outputs.
For the render pipeline, it requests Composite and File Output, with
node Viewer or Previews.
For the interactive compositor, it requests Viewer if the backdrop is
visible or an image editor with the viewer image is visible, it requests
Compositor if an image editor with the render result is visible, it
requests Previews if a node editor has previews overlay enabled. File
outputs are never requested.
Pull Request: https://projects.blender.org/blender/blender/pulls/133960
This patch adds support for drag and dropping colors (from color buttons) into
the Compositing, Shading and Geometry node trees.
Additional support was added for dragging and dropping colors with an Alpha
component (which was previously ignored), both in the context of the Node Editor
and for Color Buttons in general. This handles cases like drag and dropping a
color from an RGB to an RGBA button, which recreates the color with a default
Alpha value of 1.0.
Pull Request: https://projects.blender.org/blender/blender/pulls/129026
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
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
This allows using C++ types in the region runtime data, which will
make it easier to move the remaining runtime data out of the
`ARegion` DNA type and improve code readability in these areas.
Pull Request: https://projects.blender.org/blender/blender/pulls/130196
This adds a new type of zone to Geometry Nodes that allows executing some nodes
for each element in a geometry.
## Features
* The `Selection` input allows iterating over a subset of elements on the set
domain.
* Fields passed into the input node are available as single values inside of the
zone.
* The input geometry can be split up into separate (completely independent)
geometries for each element (on all domains except face corner).
* New attributes can be created on the input geometry by outputting a single
value from each iteration.
* New geometries can be generated in each iteration.
* All of these geometries are joined to form the final output.
* Attributes from the input geometry are propagated to the output
geometries.
## Evaluation
The evaluation strategy is similar to the one used for repeat zones. Namely, it
dynamically builds a `lazy_function::Graph` once it knows how many iterations
are necessary. It contains a separate node for each iteration. The inputs for
each iteration are hardcoded into the graph. The outputs of each iteration a
passed to a separate lazy-function that reduces all the values down to the final
outputs. This final output can have a huge number of inputs and that is not
ideal for multi-threading yet, but that can still be improved in the future.
## Performance
There is a non-neglilible amount of overhead for each iteration. The overhead is
way larger than the per-element overhead when just doing field evaluation.
Therefore, normal field evaluation should be preferred when possible. That can
partially still be optimized if there is only some number crunching going on in
the zone but that optimization is not implemented yet.
However, processing many small geometries (e.g. each hair of a character
separately) will likely **always be slower** than working on fewer larger
geoemtries. The additional flexibility you get by processing each element
separately comes at the cost that Blender can't optimize the operation as well.
For node groups that need to handle lots of geometry elements, we recommend
trying to design the node setup so that iteration over tiny sub-geometries is
not required.
An opposite point is true as well though. It can be faster to process more
medium sized geometries in parallel than fewer very large geometries because of
more multi-threading opportunities. The exact threshold between tiny, medium and
large geometries depends on a lot of factors though.
Overall, this initial version of the new zone does not implement all
optimization opportunities yet, but the points mentioned above will still hold
true later.
Pull Request: https://projects.blender.org/blender/blender/pulls/127331
Use snake style naming for all the kernel nodes functions.
Omit kernel prefix in the names since of the using namespace.
Use full forms of the terms
('iter' -> 'iterator', 'ntree' -> 'node_tree', 'rem' -> 'remove', ...).
Pull Request: https://projects.blender.org/blender/blender/pulls/126416
Previously, values for `ID.flag` and `ID.tag` used the prefixes `LIB_` and
`LIB_TAG` respectively. This was somewhat confusing because it's not really
related to libraries in general. This patch changes the prefix to `ID_FLAG_` and
`ID_TAG_`. This makes it more obvious what they correspond to, simplifying code.
Pull Request: https://projects.blender.org/blender/blender/pulls/125811
This commit moves generated `RNA_blender.h`, `RNA_prototype.h` and
`RNA_blender_cpp.h` headers to become C++ header files.
It also removes the now useless `RNA_EXTERN_C` defines, and just
directly use the `extern` keyword. We do not need anymore `extern "C"`
declarations here.
Pull Request: https://projects.blender.org/blender/blender/pulls/124469
Centralized method to obtain ScrArea icons. Areas can add an optional
space_icon_get callback to provide an icon that differs by subtype. If
not defined then ED_area_icon will return RNA UI icon, which is correct
in cases without area subtypes.
Pull Request: https://projects.blender.org/blender/blender/pulls/124556
Centralized method to obtain ScrArea names. Areas can add an optional
space_name_get callback to provide a name that differs by subtype. If
not defined then ED_area_name will return RNA UI name, which is correct
in cases without area subtypes. This eliminates the current use of
RNA_property_enum_name_gettexted using a temporary context, which
results in the reported (hard to duplicate) error.
Pull Request: https://projects.blender.org/blender/blender/pulls/124488
Calling `MEM_freeN` on data allocated with `MEM_new` is bad, since it
will not call a destructor matching the one invoked as part of
`MEM_new`.
While in practice cases fixed below were 'not a problem' currently, as
they are trivial Cpp types (and therefore their destructor is doing
nothing), `MEM_freeN` has no way to ensure it is dealing with such a
trivial data type, so allowing such mismatch is dirty and dangerous.
Note that almost all fixed cases look more like unintentional mistakes
(mis-usages of `MEM_new` instead of `MEM_cnew`).
NOTE: There is one more (known!) case in the asset code, which fix is
slightly less trivial, and will go through a separate PR.
NOTE: This is a by-product of some work to detect such invalid usages of
`MEM_freeN` on memory chunks allocated with `MEM_new`.
Pull Request: https://projects.blender.org/blender/blender/pulls/123691
This patch removes the Auto Render option from the compositor. This is
done for the following reason:
- The option didn't really work except in the case of transforming an
object. So it wasn't really reliable.
- It made little sense to use since the introduction of the Viewport
Compositor.
- It had a number of UX issues, including the fact that it can't be used
with animation playback, and the fact that rendering can get in the
way of the UI depending on the preferences for temporary editors.
Pull Request: https://projects.blender.org/blender/blender/pulls/123132
Blender crashes when duplicating a node editor with an active
compositor session. That's because the runtime data of the editor is
nullptr upon duplication. This is a regression in 51a7961e09, where the
runtime data was set to nullptr upon duplication, while it should be
assigned a newly allocated structure or duplicate the existing
structure. To fix this, we do the former and allocate a new structure
because that's what the developer intended in the original patch.
The crash is rare and went unnoticed because the runtime data is
initialized in the init method as well, which typically gets called
quickly right after the area is duplicated.
Pull Request: https://projects.blender.org/blender/blender/pulls/122506
This was a consequence of the work done in #106321, where this specific
'active in UI' case was not identified and properly handled.
Now, consider most ID usages from UI (editors) as 'weak links', i.e.
keep a reference to these IDs even if they are only indirectly used.
Note that missing weak links will not create placeholders if the source
data is not found in the library anymore on load. they are just silently
dropped.
Pull Request: https://projects.blender.org/blender/blender/pulls/122207
Move all header file into namespace.
Unnecessary namespaces was removed from implementations file.
Part of forward declarations in header was moved in the top part
of file just to do not have a lot of separate namespaces.
Pull Request: https://projects.blender.org/blender/blender/pulls/121637
Use `FileHandlers` to handle file drag-n-drop in Node Editors. Drop-boxes
still remain since they handle Images ID drag-n-drop.
This also allows to open/drag-n-drop multiple files at once.
Also this will allow add-ons to also support drag-n-drop for images and
movies in node editors while still providing access to Blender's native
support since File Handlers let users choose which to invoke if there's
multiple configured.
Pull Request: https://projects.blender.org/blender/blender/pulls/121051
This makes the read and write API functions match more closely, and adds
asserts to check that the data size is as expected.
There are still a few places remaining that use BLO_read_data_address
and similar generic functions, these should eventually be replaced as well.
Pull Request: https://projects.blender.org/blender/blender/pulls/120994
The ID remapper code was already largely defined in a CPP struct
(IDRemapper). Make this an actual class, and remove the C API wrapper
around.
This makes the code cleaner, easier to follow, and easier to extend or
modify in the future.
Pull Request: https://projects.blender.org/blender/blender/pulls/118146
- Use unique_ptr instead of raw pointers
- Use Vector instead of a linked list
- Use a destructor instead of a free function
- Remove the space type template-- it's much clearer to copy functional code
Pull Request: https://projects.blender.org/blender/blender/pulls/117766
Most of the `WM_DRAG_PATH` poll functions include
unknown file types (`0`) as fallback, preventing file handlers
from being used with explicit defined file extensions.
Pull Request: https://projects.blender.org/blender/blender/pulls/117189
`UUID` generally stands for "universally unique identifier". The session identifier that
we use is neither universally unique, nor does it follow the standard. Therefor, the term
"session uuid" is confusing and should be replaced.
In #116888 we briefly talked about a better name and ended up with "session uid".
The reason for "uid" instead of "id" is that the latter is a very overloaded term in Blender
already.
This patch changes all uses of "uuid" to "uid" where it's used in the context of a
"session uid". It's not always trivial to see whether a specific mention of "uuid" refers
to an actual uuid or something else. Therefore, I might have missed some renames.
I can't think of an automated way to differentiate the case.
BMesh also uses the term "uuid" sometimes in a the wrong context (e.g. `UUIDFaceStepItem`)
but there it also does not mean "session uid", so it's *not* changed by this patch.
Pull Request: https://projects.blender.org/blender/blender/pulls/117350
There are operators in Blender that allow the user to import multiple
files at the same time, however this functionality is only implemented
when importing with blender's file browser, drag and drop files only
takes first selected file.
The patch adds support for drag and drop multiple files.
Notes:
* The files are filtered according to the extension of the first
selected file.
* Not all operators that import files support importing multiple files,
so they will still import one.
* Changes must be made to allow importers to read all file paths.
This will be used in upcoming drag & drop import.
Pull Request: https://projects.blender.org/blender/blender/pulls/107230
The compositor doesn't run when changing node tree options. That was due
to a nullptr notifier reference for RNA node tree edits.
This patch uses the node tree ID for the notifier reference.
Additionally, the listener code was extended to always tag the node tree
when the reference is null, which converts missing updates issues like
this one to superfluous updates, since it is safer.
Pull Request: https://projects.blender.org/blender/blender/pulls/115532
The goal here is to make it easier to make node links. Previously, it was quite
easy to accidentally start box selection or to trigger the link-drag-search when
that was not intended.
Now, the tolerances are a bit easier to work with. Also, instead of trying to use
the first socket that is close enough, it will find the closest socket instead. It feels
much better in my testing already, but obviously the values can be tuned more
with some testing.
Also we have to make sure to not accidentally make other things like resizing
nodes harder.
Pull Request: https://projects.blender.org/blender/blender/pulls/115010
`GroupNodeComputeContext` is the more correct name because it's
specifically about a group node that invokes another node tree.
The old name makes it sound like it should be used because a node group
is invoked but does not tell anything about what invoked it.
For example, the current context in a node group can also be a
`ModifierComputeContext` if that's what invoked it.
