Added "[sheet" to the texture special commands.

[sofar]

"[sheet:W:H:X:Y" assumes the base image is a tilesheet with W*H tiles
on it and crops to the tile at position X,Y. Basically it works
like "[verticalframe" but in 2d.

For testing, I combined the four default_chest images into one.

[sofar]

This is a rebased, and tested #1686.

[sofar]

This had one 👍 from @sfan5? @nerzhul ok with this rebase?

[est31]

Blocked by feature freeze.

[maikerumine]

Dang. I really like this feature, use one image for many nodes. Or locate a mob face in a texture to make a head. This would be a great resource saver.

[HybridDog]

Does sheet work faster than verticalframe?
And is it possible to improve performance by applying multiple modifiers at once instead of one after another?

[sfan5]

And is it possible to improve performance by applying multiple modifiers at once instead of one after another?

I'm assuming you mean the code, it makes absolutely zero difference. Additionally this would cause inefficiencies with textures already partially generated in the past.

[pithydon]

Cool, I could use this for my rdis mod.

[paramat]

This PR now included in #4952