Version 0.4 is available

Update increase nodes count up to 40+ nodes and fix AMD compatibility.
Now agama materials use DirectX 12 API instead of Vulkan API. Mostly it's needed for AMD support, switch between APIs will be added in future versions.

Increased nodes count up to 40+ nodes. New nodes:

Gradient nodes 

Gradient map - node remap input node by gradient pattern.

Crystal nodes - new crystal node generators.