Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Mods Editing GR2 meshes finally possible

Here is the short version:

In the material editor window: File -> Regenerate Materials ...


Select Mods\%yourMod%\Assets\Materials
Click "Generate HLSL and GLSL"


After generation is complete, select Add Resource -> Material ... in the Resource Manager window.
Select the <materialName>.lsb file that was generated in the previous step, select a package from your mod. (You can leave the "Data mod" empty).
For some reason, the editor forgets the name of my material the first time I do this, so I end up with an unnamed material in the content browser. If you have the same issue, right click -> Rename/Move... and click OK. It'll fix the name issue.

If you have tex/scalar/etc parameters, you should also specify those in the next window.