Disambiguate:
- Rename "Near" to "Proximity" as a particle event type, because using
an adjective in this context is inconsistent and sounds
strange (even in English IMO).
Extract:
- "Skip" (Geometry nodes Simulation node output socket)
- "Bake" (Directory path to geometry nodes bake files in the modifier
UI)
- " (Recovered)" (File information in title bar)
Pull Request: https://projects.blender.org/blender/blender/pulls/112974
Sometimes .blend files have compatibility issues between Blender versions,
because .blend files depended on the specific order of geometry elements
generated by some nodes/modifiers (#112746, #113018). While we make
guarantees about the order in some places, that is relatively rare, because it
makes future improvements much harder. The functionality in this patch
makes it easier for users to notice when they depend on things that are not
expected to be stable between Blender builds.
This is achieved by adding a new global flag which indicates whether some
algorithms should randomize their output. The functionality can be toggled
on or off by searching for `Set Geometry Randomization`. If there are no
differences (or acceptable minor ones) when the flag is on or off, one can
be reasonably sure that one does not on unspecified behavior (can't be 100%
sure though, because randomization might be missing in some places). If
there are big differences, one should consider fixing the file before it comes
to an actual breakage in the next Blender version.
Currently, the setting is only available when `Developer Extras` is turned on,
because the setting is in no menu.
With this patch, if we get bug reports with compatibility issues caused by
depending on indices, one of the following three cases should always apply:
* We actually accidentally broke something, which requires a fix commit.
* Turning on geometry randomization shows that the .blend file depends on
things it shouldn't depend on. In this case the user has to fix the file.
* We are missing geometry randomization somewhere, which requires a fix
commit.
Pull Request: https://projects.blender.org/blender/blender/pulls/113030
A lot of Capture Attribute nodes in sequence can create a huge number of attributes.
If these attributes are not used, they should be removed.
The speed of the Capture Attribute and Store Named Attribute nodes is now identical
(for the better). There are also no extra RAM usage now.
Pull Request: https://projects.blender.org/blender/blender/pulls/113053
Previously, it was only possible to inspect the data from the first iteration. That
applied to both, the viewer node as well as socket inspection. Now, there is a
new `Inspection Index` setting in the zone properties. It specifies which iteration
should be used by the inspection features.
In theory we could support features like counting the index from the end, but
that can be done separately as well, as it likely requires more UI.
Pull Request: https://projects.blender.org/blender/blender/pulls/112818
Previously, it was only possible to bake all simulations at once. This is great
for simple use-cases that, but in more complex setups one can have independent
simulations that should also be baked independently. This patch allows baking
individual simulation zones.
Furthermore, each simulation zone can now also have its own bake path and
simulation frame range. By default the simulation frame range is the scene frame
range, but it can also be customized on the scene or simulation zone level. The
bake path is generated based on the modifier bake path by default, but can be
set to another absolute or relative (to the .blend file) path.
The timeline drawing has been modified as well to be able to show more information
in the case when some simulations are baked and others are not. Instead of showing
a line for every simulation, it shows a condensed view of the important information
using at most two lines:
Is something baked? Is something valid or invalid? Also see #112232.
Pull Request: https://projects.blender.org/blender/blender/pulls/112723
This keeps the behavior similar to the Disney BRDF, where 0.5
is neutral and lower/higher values respectively decrease/increase
the dielectric specular. But it's more correct in that it's not
an arbitrary scale on Fresnel, but rather adjusting the IOR.
Ref #99447
Ref #112848
Pull Request: https://projects.blender.org/blender/blender/pulls/112552
This patch implements the Inpaint node for the Realtime Compositor. The
inpainting region is filled by sampling the color of the nearest boundary pixel
if it is not further than the user supplied distance. Additionally, a lateral
blur is applied in the tangential path to the inpainting boundary to smooth out
the inpainted region.
The implementation is not identical to the existing CPU implementation due to
technical infeasibility. In particular, the CPU implementation uses a Manhattan
distance transform, while the GPU implementation uses an Euclidean one, which is
a consequence of the use of the Jump Flooding algorithm. Furthermore, the CPU
uses a serial convolution starting from the boundary outwards, while the GPU
uses a lateral Gaussian blur in the direction tangent to the boundary.
Pull Request: https://projects.blender.org/blender/blender/pulls/111792
This patch implements the Double Edge Mask node for the Realtime
Compositor. The implementation is primarily based on the 1+JFA Jump
Flooding algorithm, which was also introduced in this commit.
Pull Request: https://projects.blender.org/blender/blender/pulls/112223
Inlined sockets in the same vertical space are no longer supported.
This removes `input_output` socket declarations, the inlining feature in
node drawing, and the `Both` option for node group interface sockets.
Versioning code splits existing node group sockets into individual
sockets again. Unfortunately some links may get lost in versioning files
using the feature, because of an unnoticed bug: Socket identifiers have
to be unique in the node group items list but inlined input/output
sockets have the same identifier. This still works for most situations
because uniqueness is only required within input/output lists. Creating
proper unique identifiers will discard any link from the previous output
socket. This cannot easily be fixed without `after_linking` versioning
code, which should be avoided.
Pull Request: https://projects.blender.org/blender/blender/pulls/112560
The goal is to make the evaluation of repeat zones more efficient by making
use of the lazy-function evaluation system. Performance is improved in two ways:
* Unnecessary nodes are not evaluated anymore. E.g. if a repeat zone outputs two
geometries but only one of those is actually used, the other one will not be
computed anymore.
* Support evaluating different iteration indices at the same time on different threads.
It is possible that some uses of repeat zones become slower with this refactor,
especially when each iteration does very little work and there are a lot of iterations.
The old implementation was not optimized for this use case either but now there
is a bit more overhead constant overhead per iteration than before.
On the bright side, this change can result in some very significant speedups when
some computations can be skipped. See #112421 for some example setups.
There is one todo comment for adding back-links for socket usages. Properly linking
those up can result in better (shorter) life-times for anonymous attributes. Even without
that, performance is already better than before.
The implementation reuses the existing lazy-function graph system for the repeat
zone, by building a dynamically sized graph based on the number of iterations.
Building a lazy-function graph makes it possible to use the lazyness and multi-threading
features of the lazy-function graph executor. This is much easier than reimplementing
this behavior for repeat zones specifically (hence there was only single-threaded eager
execution before).
Pull Request: https://projects.blender.org/blender/blender/pulls/112421
With a callback to node panels similar to the one for nodes. Used in the
Principled BSDF to place enums in the relevant panels.
Longer term we want to make enums into sockets, but even then there are
still potentially some types of buttons we want to have in panels.
Pull Request: https://projects.blender.org/blender/blender/pulls/112591
The issue was that the `user_data` pointer in the local user data
is not necessarily valid, because a different user-data might be
passed in when a lazy-function is called a second time (it's semantically
the same user-data but, might have a different pointer).
The solution is to not keep around the dangling pointer but to pass
it in when it is actually needed. I still keep the old constructor of the
local-user-data, because more stuff might be added to it, that needs
the user-data, as was the case in the past already (before 142541c27).
The goal is to reduce redundancy by abstracting over the different types of node
tree zones. This makes it easier to add new zone types and makes the intend of
code more clear. For example, now it is more obvious what code deals with zones
in general and what does simulation specific things.
Pull Request: https://projects.blender.org/blender/blender/pulls/112531
In #112326 the socket visibility functions were updated to take the
open/closed state of panels into account for visibility of the socket
icon. However, in "hidden" (collapsed) nodes the panels should be
ignored entirely, drawing all sockets on the root level. This requires
looking at the node flags to determine socket icon visibility, so a
simple method of `bNodeSocket` is not sufficient.
This patch moves the more complex visibility queries for sockets into
`bNode`, where both node and socket flags can be accessed. These should
be used for actual visibility rather than the plain flag accessors on
`bNodeSocket`.
Renamed `is_visible_or_panel_closed` back to just `is_visible`, the
other `is_visible` variant is now integrated in `bNode::is_socket_drawn`.
Pull Request: https://projects.blender.org/blender/blender/pulls/112520
Strings that include Latin1 encoding or corrupt UTF8 byte sequences
could read past the buffer bounds (stepping over the null terminator).
Resolve by passing in the string length.
Other changes to support non-UTF8 byte sequences:
- BLI_str_utf8_offset_{to/from}_index were accumulating
the UTF8 offset without accounting for non-UTF8 characters
which could cause a buffer underflow or enter an eternal loop.
- BLI_str_utf8_offset_to_index would read past the buffer bounds if the
offset passed in if it was in the middle of a UTF8 byte sequence.
The main goal of this refactor is to simplify how a geometry node group is executed.
Previously, there was duplicated logic that turned the lazy-function graph of a node
group into a single lazy-function. Now this is done only in one place and others can
just execute the lazy-function directly, without having to worry about the underlying graph.
Pull Request: https://projects.blender.org/blender/blender/pulls/112482
Goals of the refactor:
* Simplify adding (named) graph inputs and outputs.
* Add ability to refer to a graph input or output with an index.
* Get rid of the "dummy" terminology which doesn't really help.
Previously, one would add "dummy nodes" which can then serve as input
and output nodes of the graph. Now one directly adds input and outputs
using `Graph.add_input` and `Graph.add_output`. There is one interface
node that contains all inputs and another one that contains all outputs.
Being able to refer to a graph input or output with an index makes it
more efficient to implement some algorithms. E.g. one could have a
bit span for a socket that contains all the information what graph
inputs this socket depends on.
Pull Request: https://projects.blender.org/blender/blender/pulls/112474
This is a light weight solution to passing in some extra context into
a lazy-function that is invoked by the graph executor.
The new functionality is used by #112421.
This makes the code for creating a lazy-function for the body
of a zone more reusable. Currently, it is only used by the repeat
zone, but in the future the same could be used for simulations
and for-each zones.
Currently, we create a logger for every compute context that is evaluated,
even when we don't actually log anything in that context (due to other
optimizations). Now, the logger is not created eagerly anymore.
This can be especially benefitial when there are many compute contexts
that should not log anything, e.g. if there is a repeat zone with many iterations.
In an extrem case I measured a speedup for the modifier evaluation
from 24ms to 14ms.
