[Bf-committers] Proposal for unifying nodes

Thomas Dinges dingto at gmx.de
Sun Jun 14 21:15:05 CEST 2009

That is definetely a step into the right direction!

Robin Allen schrieb:
> Hi all, I hope this is the right list.
> After hearing Ton say that nodes might see a recode, and knowing that
> users are sometimes frustrated by Blender's strict separation of tree
> types, I thought about ways to change how nodes are evaluated to let
> users use any nodes in any tree. I've put my ideas up at
> http://wiki.blender.org/index.php/User:Frr/NodeThoughts . I'd be
> willing to take this project on if people feel the design is up to
> scratch, perhaps developing in a branch akin to bmesh.
> Main points:
> * Expand nodes' data types from (float, vector, color) to include
> functions and other types
> * Define a shader to be a function of a ShaderCallData
> * Define a texture to be a function of a TexCallData
> * Allow the user to specify any nodetree outputting a shader to be
> used as a material tree; any tree outputting a texture to be used as a
> texture tree; etc.
> * Define implicit conversions allowing nodes (e.g. Invert) to be
> defined once to work on colors, and then be automatically converted to
> work on textures and shaders (since both are defined as functions
> returning colors).
> * Results in an extensible node system: instead of defining a new tree
> type, just define a new data type and some nodes that work on it.
> * No more duplication of code with tiny changes (math, image...)
> I'd like to hear any comments or criticisms you might have.
> -Rob
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