This behavior allows for certain renderers to no longer be needed
(carpet floor) and for some rendering to be possible (CTM slabs).
A single version of marble slab has been implemented with CTM as an
example, we will move over the rest of the textures once this is
finalized.
- Fix RenderBlocksCTM ignoring the renderMin/Max values
- Add custom handler for carpet to avoid hardcoding
- TODO blocks that use existing blocks as icons, e.g. ice stairs