pc_textureBomb is vex shader that uses a pointcloud to drive texture stamping/bombing onto an object. It will be released eventually. There are a few artifacting bugs I’m still trying to work out. It features:

• Does not require tileable maps
• Use up to 5 maps that can be randomly picked, or driven by a Cd attribute on the points. You can layer as many together as you’d like.
• Overlaps are handled by fading out from the center of the point outwards
• Can use the Alpha from bombed image or just use built in fade by distance
• Angle based fading (dot product) can also be used to control stretching over sharp edges
• 2 sops to help generate and preview the pointcloud. Includes simple pcfilter function on the normals so you can get a better projection from the points.
• Can be used directly for full renders as it does not require uvs.
  • I would suggest baking it to a map first — very lazy and quick uv unwraps work well for baking in most cases
• Art directable rotations (shader will read N and up from pointcloud)

More on texture bombing here: http.developer.nvidia.com/GPUGems/gpugems_ch20.html

Single map – randomly rotated and stamped onto the grid

Same map, enlarged and blended

3 non tileable rock maps rendered with a small radius

Same 3 non-tilable maps made larger and mixed together

Same 3 maps mixed together, but the displacement map (generated in awesomebump) bombed with the same settings and exported as well.

Render of baked map

Dirt Map – Tiled

Dirt Map – Texture Bombed – notice lack of repeating pattern. You can use more maps to make it even less obvious

More examples – All were made with non-tileable maps.

Works well over sharp edges, though this one could be improved as it still has some stretching on the bottom.

Multiple non-tileable maps mixed

Works on Complex Geometry

Here’s a video of the recursive growth in action, as well as a high res still (dif sim/lighting).

Also, here’s the hip file:  www.fx-td.com/content/misc/recursive_growth_v2.hiplc

Recursive Growth

Nice to see the vorticity and rest field stuff at 1:01… it’s very similar to my VHUG presentation and it’s great to have it all built in now!

Some recursive growth stuff.  Pretty fun to see what it gives you.

www.fx-td.com/content/misc/recursive_growth.hip  (be warned, this file has always been pretty crashy for me).

This was my entry into the Houdini 15 Splash Contest