Highlights

Optimizations to improve performance in scenes with many operators and reduce GPU memory usage.
Usability improvements in customRender make it easier to use RayTK operators in your own shaders.
(raytkVolumes) New combineVolumes operator to combine two volumes with different blending modes.
(raytkVolumes) Depth compositing support in volumetricRaymarchRender3d to combine with other types of rendering.
Assorted smaller bug fixes.

Details

Improvements / additions
- New OPs
  - (raytkVolume) combineVolumes - combine two volumes with different blending modes
- New OP features
  - customRender - more detailed explanations in the default shader, custom parameter support, primary input TOP support (#1258)
  - iteratedTransform - support volumes (requires raytkVolumes)
  - radialClone - support baking in the combine mode to improve performance
  - (raytkVolumes) texture3dVolume - support assigning color from a 3D texture
  - (raytkVolumes) volumetricRaymarchRender3d - support depth compositing to combine with other types of rendering.
- Snippets
  - customRender
Fixes
- customRender - fix errors related to output buffers (#1258)
- terrainNoiseField - fix parameters not disabling when inputs are attached to replace them (#1255)
- torusGridSdf - fix broken combine mode baking optimization (#1246)
- triangleSdf2d - fix scaling for equilateral mode (#1260)
- Fix UI tooltips in palette (#1253)
Changes (potentially breaking)
- All renderers now default to using separate uniform arrays per ROP for parameters, which should improve internal CHOP performance in scenes with a lot of operators/parameters. (#907)
Infrastructure / internals
- Reduce OP image resolution to reduce tox size and GPU memory usage