OptiPainting

OptiPainting

_Optimized painting rendering_

What’s this mod do?

• This mod optimizes the rendering of paintings, by not rendering the sides of the painting that are never visible.
• In 24w18a, Mojang added data-driven paintings, which allows for custom paintings to be added to the game, up to 16×16 in size. This mod removes that limit and allows you to have paintings of any size.

How’s it optimized?

If you have a look at a painting, you’ll notice that on the sides there is a 2px indented frame,
so it sticks out from the wall. In vanilla, these faces are rendered for every single block that the painting is made of.
This is a waste of resources, as the faces are never visible. This mod fixes that by not rendering these faces.

This may seem like a small optimization, but these tiny faces are equivalent to the full block face, so:

• Front – 4 vertices
• Back – 4 vertices
• Top – 4 vertices
• Bottom – 4 vertices
• Left – 4 vertices
• Right – 4 vertices

Makes a total of 24 vertices per block on vanilla. And 8 vertices per block on OptiPainting.

That’s a 66% reduction in vertices!

• If you have a 16×16 painting, that’s 256 blocks, which is 6144 vertices in vanilla, and 2048 vertices in OptiPainting.
• If you have a super-large 64×64 painting, that’s 4096 blocks, which is 98304 vertices in vanilla, and 32768 vertices in OptiPainting.

| With OptiPainting | Without OptiPainting |
|——————————————————————————————————————————–|———————————————————————————————————————————–|
| | |

_This example is rendered without the back face to demonstrate what the mod does.
You can see the back of the painting in vanilla and with the mod. (For now!!)_

Obviously, if you only have the occasional painting in your world, you won’t notice much of a difference, but it
is free optimization none-the-less!