The texture node system integrates a node-based texture generator into Blender.
- Texture nodes have been added as a new tree type, known internally as NTREE_TEXTURE. Each Tex object has new 'use_nodes' and 'nodetree' members, like the ones in Materials.
- The current procedural textures have been implemented as nodes. Each procedural node has two input colours, which are mapped to the intensity output of the texture.
- Procedural nodes each have their own set of parameters, mirroring those available in the texture buttons panel. Where appropriate, parameters can be controlled by node inputs.
- Animation works the same way as it does for the Compositor nodes, i.e. with a Time node. IPO integration would be nice, but that's another project.
- No sampling.