Override layers are a standard feature of Alembic, where archives can override
data from other archives, provided that the hierarchies match.
This is useful for modifying a UV map, updating an animation, or even creating
some sort of LOD system where low resolution meshes are swapped by high resolution
versions.
It is possible to add UV maps and vertex colors using this system, however, they
will only appear in the spreadsheet editor when viewing evaluated data, as the UV
map and Vertex color UI only show data present on the original mesh.
Implementation wise, this adds a `CacheFileLayer` data structure to the `CacheFile`
DNA, as well as some operators and UI to present and manage the layers. For both
the Alembic importer and the Cycles procedural, the main change is creating an
archive from a list of filepaths, instead of a single one.
After importing the base file through the regular import operator, layers can be added
to or removed from the `CacheFile` via the UI list under the `Override Layers` panel
located in the Mesh Sequence Cache modifier. Layers can also be moved around or
hidden.
See differential page for tests files and demos.
Reviewed by: brecht, sybren
Differential Revision: https://developer.blender.org/D13603
This is a first part of the Shader Create Info system could be.
A shader create info provides a way to define shader structure, resources
and interfaces. This makes for a quick way to provide backend agnostic
binding informations while also making shader variations easy to declare.
- Clear source input (only one file). Cleans up the GPU api since we can create a
shader from one descriptor
- Resources and interfaces are generated by the backend (much simpler than parsing).
- Bindings are explicit from position in the array.
- GPUShaderInterface becomes a trivial translation of enums and string copy.
- No external dependency to third party lib.
- Cleaner code, less fragmentation of resources in several libs.
- Easy to modify / extend at runtime.
- no parser involve, very easy to code.
- Does not hold any data, can be static and kept on disc.
- Could hold precompiled bytecode for static shaders.
This also includes a new global dependency system.
GLSL shaders can include other sources by using #pragma BLENDER_REQUIRE(...).
This patch already migrated several builtin shaders. Other shaders should be migrated
one at a time, and could be done inside master.
There is a new compile directive `WITH_GPU_SHADER_BUILDER` this is an optional
directive for linting shaders to increase turn around time.
What is remaining:
- pyGPU API {T94975}
- Migration of other shaders. This could be a community effort.
Reviewed By: jbakker
Maniphest Tasks: T94975
Differential Revision: https://developer.blender.org/D13360
For an upcoming refactoring of library remapping we want to be able to test if the logic won't change.
It also increased my experience inside the remapping codebase and find out what exactly needed to
be refactored.
This patch adds test cases for the core functionality of `foreach_libblock_remap_callback`. The test cases
don't cover of all the branches. Also pre-, post-processing, referencing and proxies are not tested.
Reviewed By: mont29
Differential Revision: https://developer.blender.org/D13815
Allows conveniently selecting an inverse of a collection.
Reviewed By: Antonio Vazquez (antoniov)
Differential Revision: https://developer.blender.org/D13846
This patch improves conversion method from NURBS to Bezier curves,
resulting in exact shape between those two types when provided with
a 3rd degree NURBS curve. Part of T86086.
See the differential revision for more comparisons.
The node still cannot account properly for a NURBS "order" other
than 4 and it does not take into account control point weights.
Differential Revision: https://developer.blender.org/D13546
Fix the description for WORKSPACE_OT_reorder_to_back to say "last" in
list rather than "first"
See D13696 for more details.
Differential Revision: https://developer.blender.org/D13696
Reviewed by Aaron Carlisle
The crash is due to the fact that GPU subdivision extraction routines
for edit data (including UVs) only worked for BMesh. However, a Mesh
based version is still needed for texture painting. This adds the
missing components. This also ensures all data are properly initialized
(at least the ones revealed by the bug).
This puts the loop over the final subdivision quads outside of the mesh
iteration callback. This can also allow for easier parallel execution in
the future if need be.
Conceptually, this is the geometry that data is taken from,
not the target of an operation, so rename it from "Target"
to "Source". This was common user feedback and agreed
on in a recent sub-module meeting.
Before rB644e6c7a3e99ae1d43ed, `fill` was used in the error
cases, but now `fill_indices` is used, which doesn't work when
the span is empty (when only one output is used). The fix is just
to check for that case.
The search list only displayed the "Result" output socket in this
case, which is unexpected since dragging from an input gives the
operations in the list as well. Also use integer mode when
connecting to boolean sockets.
I noticed these when doing final cleanup on rBcfa53e0fbeed.
One use was removed in that commit, the others were unused
going further back a few years.
Differential Revision: https://developer.blender.org/D13834
`TreeElement` isn't a trivial type anymore, so `MEM_delete()` should be
called, which calls the destructor.
AFAICS this would cause a memory leak, since the contained `unique_ptr`
is allocated but not destructed correctly - but it's not using the
guarded allocator so woudn't be reported.
Smart pointers should be the default choice for C++ owning pointers,
since they let you manage memory using RAII.
Also moved type factory methods into static class functions.
Basically this removes any C <-> C++ glue code. C++ types are accessed
directly via the public C++ APIs.
Contains some related changes like, moving functions that were
previously declared in a now removed header to a different file, whose
header is the more appropriate place (and the source file as well).
But generally I tried to avoid other changes.
The switch to how normals are kept has led to tiny differences in
the normal output values on different platforms. Disabling the failing
tests while working on a solution to this problem.
Part of a5cb7c1e62 is reverted since it
created unknown pragma warning on windows.
Use a trick to do self-assigning.
Reviewed by Jacques Lucke in chat.
`BKE_layer_collection_sync` was missing a specific handling for one of
those pre-master collection cases,
NOTE: It is a bit unfortunate to have to do 'do-version' code in BKE...
At some point might look into moving this into actual `do_version` file,
but this is not fully trivial not critical improvement for now.
Caused by rBa5c59fb90ef9.
Since Group Input and Output sockets happen to be of type `SOCK_CUSTOM`
[and since rBa5c59fb90ef9 custom py defined sockets are too :)] a check
introduced in rB513066e8ad6f that prevents connections for `SOCK_CUSTOM`
triggered.
Now refine the check, so it specifically looks for NODE_GROUP_INPUT /
NODE_GROUP_OUTPUT, too (this keeps the intention intact to not connect
group inputs to group outputs and vice versa, but allows custom py
defined sockets to connect again) and put it in new utility function.
Maniphest Tasks: T94827
Differential Revision: https://developer.blender.org/D13817
Fix assignment warning
source/blender/blenlib/tests/BLI_any_test.cc:56:5: warning: explicitly
assigning value of variable of type 'blender::Any<void, 8, 8>'
to itself [-Wself-assign-overloaded]
c = c;
Reviewed By: JacquesLucke
Differential Revision: https://developer.blender.org/D13835
2-point-curves are treated separately from 3plus-point-curves (assume a
lot of the twisting reduction can be skipped, so there is a dedicated
function for single segment curves).
And while using the 3plus-point-curves function [`make_bevel_list_3D`]
would actually work in this case, the dedicated function
`make_bevel_list_segment_3D` would only consider the tilt of the second
point and would just copy over the quat to the first point as well. Dont
see a reason for this, now consider the first point's tilt as well.
Maniphest Tasks: T94837
Differential Revision: https://developer.blender.org/D13813
The mask is only used if it's not zero. Adding the normal mask made
it not zero, but it didn't include anything else, so all custom data
layers except normals were removed. The fix is to only add normals
to the mask when it should be used.
As described in T91186, this commit moves mesh vertex normals into a
contiguous array of float vectors in a custom data layer, how face
normals are currently stored.
The main interface is documented in `BKE_mesh.h`. Vertex and face
normals are now calculated on-demand and cached, retrieved with an
"ensure" function. Since the logical state of a mesh is now "has
normals when necessary", they can be retrieved from a `const` mesh.
The goal is to use on-demand calculation for all derived data, but
leave room for eager calculation for performance purposes (modifier
evaluation is threaded, but viewport data generation is not).
**Benefits**
This moves us closer to a SoA approach rather than the current AoS
paradigm. Accessing a contiguous `float3` is much more efficient than
retrieving data from a larger struct. The memory requirements for
accessing only normals or vertex locations are smaller, and at the
cost of more memory usage for just normals, they now don't have to
be converted between float and short, which also simplifies code
In the future, the remaining items can be removed from `MVert`,
leaving only `float3`, which has similar benefits (see T93602).
Removing the combination of derived and original data makes it
conceptually simpler to only calculate normals when necessary.
This is especially important now that we have more opportunities
for temporary meshes in geometry nodes.
**Performance**
In addition to the theoretical future performance improvements by
making `MVert == float3`, I've done some basic performance testing
on this patch directly. The data is fairly rough, but it gives an idea
about where things stand generally.
- Mesh line primitive 4m Verts: 1.16x faster (36 -> 31 ms),
showing that accessing just `MVert` is now more efficient.
- Spring Splash Screen: 1.03-1.06 -> 1.06-1.11 FPS, a very slight
change that at least shows there is no regression.
- Sprite Fright Snail Smoosh: 3.30-3.40 -> 3.42-3.50 FPS, a small
but observable speedup.
- Set Position Node with Scaled Normal: 1.36x faster (53 -> 39 ms),
shows that using normals in geometry nodes is faster.
- Normal Calculation 1.6m Vert Cube: 1.19x faster (25 -> 21 ms),
shows that calculating normals is slightly faster now.
- File Size of 1.6m Vert Cube: 1.03x smaller (214.7 -> 208.4 MB),
Normals are not saved in files, which can help with large meshes.
As for memory usage, it may be slightly more in some cases, but
I didn't observe any difference in the production files I tested.
**Tests**
Some modifiers and cycles test results need to be updated with this
commit, for two reasons:
- The subdivision surface modifier is not responsible for calculating
normals anymore. In master, the modifier creates different normals
than the result of the `Mesh` normal calculation, so this is a bug
fix.
- There are small differences in the results of some modifiers that
use normals because they are not converted to and from `short`
anymore.
**Future improvements**
- Remove `ModifierTypeInfo::dependsOnNormals`. Code in each modifier
already retrieves normals if they are needed anyway.
- Copy normals as part of a better CoW system for attributes.
- Make more areas use lazy instead of eager normal calculation.
- Remove `BKE_mesh_normals_tag_dirty` in more places since that is
now the default state of a new mesh.
- Possibly apply a similar change to derived face corner normals.
Differential Revision: https://developer.blender.org/D12770
Some of the message-bus macros are not safe to use in C++. This has come
up before, but no good solution was found. Now @LazyDodo, @HooglyBoogly
and I concluded this is the best duct tape "solution" for the moment.
The message-bus API should address this.
