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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.
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Caused by own rBcf2933c38a34 which changed the poll on this node to be
"shading-only", but this one is actually supported.
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This way we get a choice when we click on node links in the Properties
Editor.
This also changes some of the more permissive poll functions on some
nodes back to being "shading-only" (these were made permissive in
rBb78f2675d7e5 for simulation nodes, but have not found their way into
geometry nodes yet).
ref b279fef85d1a / T86416 / D10671
Maniphest Tasks: T86416
Differential Revision: https://developer.blender.org/D10673
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This is a complete rewrite of the derived node tree data structure.
It is a much thinner abstraction about `NodeTreeRef` than before.
This gives the user of the derived node tree more control and allows
for greater introspection capabilities (e.g. before muted nodes were
completely abstracted away; this was convenient, but came with
limitations).
Another nice benefit of the new structure is that it is much cheaper
to build, because it does not inline all nodes and sockets in nested
node groups.
Differential Revision: https://developer.blender.org/D10620
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Replace `NULL` with `nullptr` in C++ code.
No functional changes.
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This follows the GPU module naming of other buffers.
We pass name to distinguish each GPUUniformBuf in debug mode.
Also remove DRW_uniform_buffer interface.
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This also introduces the `blender::nodes` namespace. Eventually,
we want to move most/all of the node implementation files into
this namespace.
The reason for this file-move is that the code fits much better
into the `nodes` directory than in the `blenkernel` directory.
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This required a little bit of refactoring, because we were using c-only
syntax for the gpu shader names. All tests are still passing.
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