Before this patch attempting to remove a particle modifier programmatically
through Python would fail, because it deleted the modifier associated with
the currently active particle system instead of the one passed as an argument
to `bpy.types.ObjectModifiers.remove()`.
This fix adds an additional argument for the particle system to
`object_remove_particle_system`. This allows to specify which particle system
and its associated modifier shall be removed. In case of
`particle_system_remove_exec` it will remain the currently active particle
system, whereas `object_remove_particle_system` passes the particle system
of the modifier. Hence, the correct modifier will be removed.
Reviewed By: mont29
Differential Revision: https://developer.blender.org/D12234
We need to separate the flag telling duplicate code to not handle
remapping to new IDs etc., from the one telling the code that we are
currently duplicating a 'root' ID (i.e. not a dependency of another
duplicated ID).
This whole duplicate code/logic is still fairly unsatisfying, think it
will need further refactor, or maybe even re-design, at some point...
Add a string length argument to BLI_str_utf8_as_unicode_step to prevent
reading past the buffer bounds or the intended range since some callers
of this function take a string length to operate on part of the string.
Font drawing for example didn't respect the length argument,
potentially causing a buffer over-read with multi-byte characters
that could read past the end of the string.
The following command would read 5 bytes past the end of the input.
`BLF_draw(font_id, (char[]){252}, 1);`
In practice strings are typically null terminated so this didn't crash
reading past buffer bounds.
Nevertheless, this wasn't correct and could cause bugs in the future.
Clamping by the length now has the same behavior as a null byte.
Add test to ensure this is working as intended.
Simplify logic of speed effect frame calculation by using discrete math
where possible. Only `SEQ_SPEED_MULTIPLY` mode with animation requires
frame map to be built. Frame map building was simplified by removing
unused branches.
Functional change: Animating strip in negative range will reverse playback.
I assume this was limitation of previous system, where each frame map item
was limited to be within correct frame range. Now frame map can contain
values that point beyond usable range and they are limited by
`seq_speed_effect_target_frame_get`. This way it is possible to control
playback rate in both directions.
Mostly fixes T89120 apart from offset handling.
Reviewed By: mano-wii
Differential Revision: https://developer.blender.org/D11939
Changes the threshold comparison from absolute to relative.
Removes threshold for MLoopCol comparison.
Adds a compare relative threshold function.
Reviewed By: JacquesLucke
Differential Revision: https://developer.blender.org/D12273
Authored by Henrik Dick (weasel)
Reviewed By YimingWu (NicksBest), Antonio Vazquez (antoniov)
Differential Revision: https://developer.blender.org/D12284
The multi-function network system was able to compose multiple
multi-functions into a new one and to evaluate that efficiently.
This functionality was heavily used by the particle nodes prototype
a year ago. However, since then we only used multi-functions
without the need to compose them in geometry nodes.
The upcoming "fields" in geometry nodes will need a way to
compose multi-functions again. Unfortunately, the code removed
in this commit was not ideal for this different kind of function
composition. I've been working on an alternative that will be added
separately when it becomes needed.
I've had to update all the function nodes, because their interface
depended on the multi-function network data structure a bit.
The actual multi-function implementations are still the same though.
Several pure runtime data in this ID type were not properly cleared by
write/read processes.
Note that the initial undo step (the one leading back to initial read
file state) is still forcing re-load of image, for some reasons.
Common investigation together with Jeroen Bakker (@jbakker), thanks. See
also D12242.
This was not really useful, and added estra useless steps in case and ID
should not actually be written.
Further more, it prevented clearing the usercount on write, which can be
cause a false positive 'chanhged' detection in undo/redo case.
This patch exposes the Cycles Alembic Procedural through the MeshSequenceCache
modifier in order to use and test it from Blender.
To enable it, one has to switch the render feature set to experimental and
activate the Procedural in the modifier. An Alembic Procedural is then
created for each CacheFile from Blender set to use the Procedural, and each
Blender object having a MeshSequenceCache modifier is added to list of objects
of the right procedural.
The procedural's parameters derive from the CacheFile's properties which are
already exposed in the UI through the modifier, although more Cycles specific
options might be added in the future.
As there is currently no cache controls and since we load all the data at the
beginning of the render session, the procedural is only available during
viewport renders at the moment. When an Alembic procedural is rendered, data
from the archive are not read on the Blender side.
If a Cycles render is not active and the CacheFile is set to use the Cycles Procedural,
bounding boxes are used to display the objects in the scene as a signal that the
objects are not processed by Blender anymore. This is standard in other DCCs.
However this does not reduce the memory usage from Blender as the Alembic data
was already loaded either during an import or during a .blend file read.
This is mostly a hack to test the Cycles Alembic procedural until we have a
better Blender side mechanism for letting renderers load their own geometry,
which will be based on import and export settings on Collections (T68933).
Ref T79174, D3089
Reviewed By: brecht, sybren
Maniphest Tasks: T79174
Differential Revision: https://developer.blender.org/D10197
Embedded IDs (root nodetrees, master collection, etc.) pointer itself is
not editable, but their content may be overridden.
LibOverride code is supposed to know how to handle those embedded IDs.
Removes the artificial requirement that UDIM tile sets start at 1001.
Blender was already capable of handling sparse tile sets (non-contiguous
tiles) so the restriction around starting at 1001 was unnecessary in
general.
This required fixing a few UDIM-related python bugs around manually
updating the `tile_number` field on images as well. See the differential
for details. No script changes are necessary but they will now work,
correctly, in many more cases.
Differential Revision: https://developer.blender.org/D11859
There was an unreported bug that switch direction would not switch the order of the vertex group weights. This caused join to do it wrong as well.
Changed to use `BLI_array_reverse` function here to reverse both the normal points and the weights, therefore simplifying the code.
Differential Revision: https://developer.blender.org/D12251
This patch adds the missing ability to keep the vertex groups when converting to a grease pencil object. This is increadible useful to create rigged grease pencil objects which move together with rigged meshes.
Differential Revision: https://developer.blender.org/D12249
When adding a range of tiles, the operator could incorrectly calculate
the end_tile. It would not account for the start_tile itself and the
IMA_UDIM_MAX value was 1 too small. This is most noticeable when
attempting to fill the entire supported range of tiles.
Differential Revision: https://developer.blender.org/D11857
The duration and start time for audio strips were not correctly read in
audaspace.
Some video files have a "lead in" section of audio that plays before the
video starts playing back. Before this patch, we would play this lead in
audio at the same time as the video started and thus the audio would not
be in sync anymore.
Now the lead in audio is cut off and the duration should be correctly
calculated with this in mind.
If the audio starts after the video, the audio strip is shifted to
account for this, but it will also lead to cut off audio which might not
be wanted. However we don't have a simple way to solve this at this
point.
Differential Revision: http://developer.blender.org/D11917
Before we didn't encode the audio up until the current frame.
This lead to us not encoding the last video frame of audio.
Reviewed By: Richard Antalik
Differential Revision: http://developer.blender.org/D11918
We didn't flush audio after encoding finished which lead to audio
packets being lost.
In addition to this the audio timestamps were wrong because we
incremented the current audio time before using it.
Reviewed By: Richard Antalik
Differential Revision: http://developer.blender.org/D11916
Add color data type comparison for meshes, adding it as
part of comparing meshes with geometry nodes applied.
Reviewed By: JacquesLucke
Differential Revision: https://developer.blender.org/D12192
Add a debug-only check regarding consistency of the cache (mapping from
objects to their bases) for a given ViewLayer.
Issues can happen otherwise when some code does remapping of objects,
and forgets to call `BKE_main_collection_sync_remap()` (which clears
those caches) instead of `BKE_main_collection_sync()`.
This reverts commit 41e6509818.
This broke "CubeMaskFirst" test.
Any value even slightly outside the [-1.0..1.0] range
caused the result to be nan, which can happen when calculating
the dot-product between two unit length vectors.
This was left over from when these scripts were loaded as modules,
where their names needed to be compatible with Pythons module naming.
Version patch existing files so text with register enabled
without a `.py` extension wont start executing on startup.
Resolves T89532.
This supported calculating normals for MPoly array which was copied to
an MFace aligned array.
Remove the functions entirely since MFace use is being phased out and
these function isn't used anywhere.
Use BKE_mesh_calc_normals instead of
BKE_mesh_calc_normals_mapping_simple for curve modifier calculation.
This only made sense for derived-mesh which is no longer used.
Remove the 'only_face_normals' argument.
- BKE_mesh_calc_normals_poly for polygon normals.
- BKE_mesh_calc_normals_poly_and_vertex for poly and vertex normals.
Order arguments logically:
- Pair array and length arguments.
- Position normal array arguments (to be filled) last.
Optimize mesh normal calculation.
- Remove the intermediate `lnors_weighted` array, accumulate directly
into the normal array using a spin-lock for thread safety.
- Remove single threaded iteration over loops
(normal calculation is now fully multi-threaded).
- Remove stack array (alloca) for pre-calculating edge-directions.
Summary of Performance Characteristics:
- The largest gains are for single high poly meshes, with isolated
normal-calculation benchmarks of meshes over ~1.5 million showing
2x+ speedup, ~25 million polygons are ~2.85x faster.
- Single lower poly meshes (250k polys) can be ~2x slower.
Since these meshes aren't normally a bottleneck,
and this problem isn't noticeable on large scenes,
we considered the performance trade-off reasonable.
- The performance difference reduces with larger scenes,
tests with production files from "Sprite Fight" showing
the same or slightly better overall performance.
NOTE: tested on a AMD Ryzen TR 3970X 32-Core.
For more details & benchmarking scripts, see the patch description.
Reviewed By: mont29
Ref D11993
