Hi, thanks for answer!
I wanted to make a block with three different sprites with different indexes metadata. But I got three of the same block with the same sprite.
I do not understand why the unit inherited from class "Block" with established RenderType: "1", in three blocks with different indices Metadata uses the same sprite for texture.
I wrote the code at the example taken here:
https://bitbucket.org/godshawk/isis/src/d4ed632ec2b69e93bbd5ab1865491e4e6f1090c2/minecraft/net/minecraft/block/BlockTallGrass.java?at=master