Subtracting one from the evaluated index could make the index -1.
That was only necessary for Bezier curves due to the specifics of
the "bezier_evaluated_offsets".
Geometry Nodes (new) icon. So far we were using the generic node-tree
icon for geometry nodes, not anymore.
The new icon is composed of 4 spheres that is a reference to the
original pebbles demo. Scattering points was also the turning point for
the project (which originally was focusing on dynamic effects), and to
this day is one of the first steps for everything procedural such as
hair.
Note that the modifier icon is still showing as white in the outliner.
The alternative is to be blue everywhere.
Patch review and feedback by Hans Goudey.
Icon creation in collaboration with Pablo Vazquez.
This patches rewrites the GPU shaders of curve nodes for easier future
development. This is a non-functional change. The new code avoids code
duplication by moving common code into BKE curve mapping functions. It
also avoids ambiguous data embedding into the gradient vectors that are
passed to vectors and reduces the size of uniforms uploaded to the
shader by avoiding redundancies.
This is needed in preparation for the viewport compositor, which will
utilize and extend this implementation.
Reviewed By: fclem
Differential Revision: https://developer.blender.org/D14689
There are fancier possibilities for improvements, like taking ownership
of existing arrays in some cases, but this patch takes a simpler brute
force approach for now.
The first change is to move from the previous loop to using the new
`materialize_compressed_to_uninitialized` method on virtual arrays,
which adds only the selected values to the output. That is a nice
improvement in some cases, corresponding to the "Without Threading"
column in the chart below.
The next change is to call that function in parallel on slices of
the output. To avoid generating too much code, we can avoid
templating based on the type and devirtualizing completely.
The test input is a 4 million point grid, generated by the grid
primitive node. Color and 2D vector attributes were also transferred
to the points.
| Test | Before | Final No Threading | Final | Change |
| --------- | ------ | ------------------ | ------ | ------ |
| All Verts | 209 ms | 186 ms | 170 ms | 0.8x |
| 1% | 148 ms | 143 ms | 133 ms | 0.9x |
| All Faces | 326 ms | 303 ms | 87 ms | 0.27x |
| 1% Faces | 70 ms | 68 ms | 34 ms | 0.49x |
Differential Revision: https://developer.blender.org/D14661
This adds an input to the Subdivision node to specify a field to use
for controling vertex creases. Common code with edge creasing was
extracted into utility functions to avoid redundancy.
Differential Revision: https://developer.blender.org/D14199
Inspired by D12936 and D12929, this patch adds general purpose
"Combine Color" and "Separate Color" nodes to Geometry, Compositor,
Shader and Texture nodes.
- Within Geometry Nodes, it replaces the existing "Combine RGB" and
"Separate RGB" nodes.
- Within Compositor Nodes, it replaces the existing
"Combine RGBA/HSVA/YCbCrA/YUVA" and "Separate RGBA/HSVA/YCbCrA/YUVA"
nodes.
- Within Texture Nodes, it replaces the existing "Combine RGBA" and
"Separate RGBA" nodes.
- Within Shader Nodes, it replaces the existing "Combine RGB/HSV" and
"Separate RGB/HSV" nodes.
Python addons have not been updated to the new nodes yet.
**New shader code**
In node_color.h, color.h and gpu_shader_material_color_util.glsl,
missing methods hsl_to_rgb and rgb_to_hsl are added by directly
converting existing C code. They always produce the same result.
**Old code**
As requested by T96219, old nodes still exist but are not displayed in
the add menu. This means Python scripts can still create them as usual.
Otherwise, versioning replaces the old nodes with the new nodes when
opening .blend files.
Differential Revision: https://developer.blender.org/D14034
The issue was that the `NodeTreeRef` acceleration data structure was
rebuild much more often than necessary. That happened because the
Map Range node accidentally tagged the node tree for change even
though it did not actually change.
Differential Revision: https://developer.blender.org/D14842
Use `src` and `dst` instead of less common variable names,
less redundant logic, simpler use of const, and "typename"
for template arguments instead of "class".
Overwriting UV map or vertex color data in Geometry nodes will move the
layers to another CustomData channel, and as such, will make attribute
lookup fail from the UVMap and Vertex Color nodes in EEVEE as the
CustomDataType will also be modified (i.e. no longer `CD_MTFACE` or
`CD_MCOL`).
As discussed in T93179, the solution is to use `CD_PROP_AUTO_FROM_NAME`
so that the render engine is able to find the attributes. This also makes
EEVEE emulate Cycles behaviour in this regard. `attr_load_uv` and
`attr_load_color` are also removed in favor of the generic attribute
API in the various GLSL shaders.
Although `CD_PROP_AUTO_FROM_NAME` is now used even for UV maps, the
active UV map is still used in case the attribute name is empty, to
preserve the old behavior.
Differential Revision: https://developer.blender.org/D13730
This commit implements copying of materials and material indices from
all of the boolean node's input meshes. The materials are added to the
final mesh in the order that they appear when looking through the
materials of the input meshes in the same order of the multi-socket
input node.
All material remapping is done with mesh-level materials. Object-level
materials are not considered, since the meshes don't come from objects.
Merging all materials rather than just the materials on the first mesh
requires a change to the boolean-mesh conversion. This subtly changes
the behavior for object linked materials, but in a good way I think;
now the material remap arrays are respected no matter the number
of materials on the first mesh input.
Differential Revision: https://developer.blender.org/D14788
At least on the Mac, `std::sort` sometimes passes the same value in the
`a` and `b` parameters.
The `true` return is only for cases where `a` is less than `b`.
Goals:
* Better high level control over where devirtualization occurs. There is always
a trade-off between performance and compile-time/binary-size.
* Simplify using array devirtualization.
* Better performance for cases where devirtualization wasn't used before.
Many geometry nodes accept fields as inputs. Internally, that means that the
execution functions have to accept so called "virtual arrays" as inputs. Those
can be e.g. actual arrays, just single values, or lazily computed arrays.
Due to these different possible virtual arrays implementations, access to
individual elements is slower than it would be if everything was just a normal
array (access does through a virtual function call). For more complex execution
functions, this overhead does not matter, but for small functions (like a simple
addition) it very much does. The virtual function call also prevents the compiler
from doing some optimizations (e.g. loop unrolling and inserting simd instructions).
The solution is to "devirtualize" the virtual arrays for small functions where the
overhead is measurable. Essentially, the function is generated many times with
different array types as input. Then there is a run-time dispatch that calls the
best implementation. We have been doing devirtualization in e.g. math nodes
for a long time already. This patch just generalizes the concept and makes it
easier to control. It also makes it easier to investigate the different trade-offs
when it comes to devirtualization.
Nodes that we've optimized using devirtualization before didn't get a speedup.
However, a couple of nodes are using devirtualization now, that didn't before.
Those got a 2-4x speedup in common cases.
* Map Range
* Random Value
* Switch
* Combine XYZ
Differential Revision: https://developer.blender.org/D14628
Remembering the number of curves of every type makes it fast to know
whether processing specific to a single curve type has to be done.
This information was accessed in quite a few places, so this should be
an overall reduction in overhead for the new curves type.
The cache is computed eagerly, in other words every time after changing
the curve types. In order to reduce verbosity I added helper functions
for some common ways to set the types.
Differential Revision: https://developer.blender.org/D14732
* If removing an attribute failed (even though it exists), don't log it as being used.
* Make warning message a bit more informative.
Differential Revision: https://developer.blender.org/D14750
Since cbf033c055 the `matte_id` will be allocated in the node
storage for the forward compatibility purposes. However, this
field was never freed, leading to memory leak.
Causes annoying popup on macOS when running Cycles tests,
for example render_passes_cryptomatte_asset.blend
Differential Revision: https://developer.blender.org/D14728
Since {rBeae36be372a6b16ee3e76eff0485a47da4f3c230} the distinction
between float and byte colors is more explicit in the ui. So far, geometry
nodes couldn't really deal with byte colors in general. This patch fixes that.
There is still only one color socket, which contains float colors. Conversion
to and from byte colors is done when read from or writing to attributes.
* Support writing to byte color attributes in Store Named Attribute node.
* Support converting to/from byte color in attribute conversion operator.
* Support propagating byte color attributes.
* Add all the implicit conversions from byte colors to the other types.
* Display byte colors as integers in spreadsheet.
Differential Revision: https://developer.blender.org/D14705
This is mostly a cleanup to avoid hardcoding the eager calculation of
normals it isn't necessary, by reducing calls to `BKE_mesh_calc_normals`
and by removing calls to `BKE_mesh_normals_tag_dirty` when the mesh
is newly created and already has dirty normals anyway. This reduces
boilerplate code and makes the "dirty by default" state more clear.
Any regressions from this commit should be easy to fix, though the
lazy calculation is solid enough that none are expected.
This is to make the codegen and shading nodes object type agnostic. This
is essential for flexibility of the engine to use the nodetree as it see
fits.
The essential volume attributes struct properties are moved to the
`GPUMaterialAttribute` which see its final input name set on creation.
The binding process is centralized into `draw_volume.cc` to avoid
duplicating the code between multiple engines. It mimics the hair attributes
process.
Volume object grid transforms and other per object uniforms are packed into
one UBO per object. The grid transform is now based on object which simplify
the matrix preparations.
This also gets rid of the double transforms and use object info orco factors
for volume objects.
Tagging @brecht because he did the initial implementation of Volume Grids.
Preserve multi socket link order when copying nodes or adding a new
group input sockets by linking directly to multi inputs from the group
input node's extension socket.
This is done by also copying the `multi_input_socket_index` when
the new links are created by copying existing or temporary links.
Reviewed By: Hans Goudey
Differential Revision: http://developer.blender.org/D14535
`rna_NodeSocket_refine` and `rna_Node_refine` take significant time
when building the `NodeTreeRef` acceleration data structure, but they
aren't used at all. This commit removes their eager calculation and
instead creates them on-demand in the `rna()` functions. They also
aren't inlined to avoid including `RNA_prototypes.h` in the header.
Differential Revision: https://developer.blender.org/D14674
This commit changes the Curve to Mesh node to work with `Curves`
instead of `CurveEval`. The change ends up basically completely
rewriting the node, since the different attribute storage means that
the decisions made previously don't make much sense anymore.
The main loops are now "for each attribute: for each curve combination"
rather than the other way around, with the goal of taking advantage
of the locality of curve attributes. This improvement is quite
noticeable with many small curves; I measured a 4-5x improvement
(around 4-5s to <1s) when converting millions of curves to tens of
millions of faces. I didn't obverse any change in performance compared
to 3.1 with fewer curves though.
The changes also solve an algorithmic flaw where any interpolated
attributes would be evaluated for every curve combination instead
of just once per curve. This can be a large improvement when there
are many profile curves.
The code relies heavily on a function `foreach_curve_combination`
which calculates some basic information about each combination and
calls a templated function. I made assumptions about unnecessary reads
being removed by compiler optimizations. For further performance
improvements in the future that might be an area to investigate.
Another might be using a "for a group of curves: for each attribute:
for each curve" pattern to increase the locality of memory access.
Differential Revision: https://developer.blender.org/D14642
This commit removes all EEVEE specific code from the `gpu_shader_material*.glsl`
files. It defines a clear interface to evaluate the closure nodes leaving
more flexibility to the render engine.
Some of the long standing workaround are fixed:
- bump mapping support is no longer duplicating a lot of node and is instead
compiled into a function call.
- bump rewiring to Normal socket is no longer needed as we now use a global
`g_data.N` for that.
Closure sampling with upstread weight eval is now supported if the engine needs
it.
This also makes all the material GLSL sources use `GPUSource` for better
debugging experience. The `GPUFunction` parsing now happens in `GPUSource`
creation.
The whole `GPUCodegen` now uses the `ShaderCreateInfo` and is object type
agnostic. Is has also been rewritten in C++.
This patch changes a view behavior for EEVEE:
- Mix shader node factor imput is now clamped.
- Tangent Vector displacement behavior is now matching cycles.
- The chosen BSDF used for SSR might change.
- Hair shading may have very small changes on very large hairs when using hair
polygon stripes.
- ShaderToRGB node will remove any SSR and SSS form a shader.
- SSS radius input now is no longer a scaling factor but defines an average
radius. The SSS kernel "shape" (radii) are still defined by the socket default
values.
Appart from the listed changes no other regressions are expected.
This adds a new node editor overlay that helps users to see where
named attributes are used. This is important, because named
attributes can have name collisions between independent node
groups which can lead to hard to find issues.
Differential Revision: https://developer.blender.org/D14618
Solves compilation warning with Clang, and moves manipulation with
DNA structures to the designed way for C++.
The tests and few other places are update to the new code by Jacques.
Ref T96847
Maniphest Tasks: T96847
Differential Revision: https://developer.blender.org/D14625
