2D rigged sprite rendered into a 3D viewport causing immense lag

[modern depot]

I've actually already mentioned this back in #animation, but I'm unable to find solutions on my own so here am I

I want to make a two dimensional sprite that can be rigged display in a 3d space (something like how Limbus Company does it)

It does technically work, but it slows my game from a constant 60fps to 30 with just one Unit

I did also notice that my gpu is not doing any work, so maybe its related to that, but i have no experience with with it

I do hope it's just one of those problems where i don't know how to ask and thus can't find the solution

[patent dagger]

first of all, your rig is pretty complex, and unlike regular Sprite2Ds, Polygon2Ds won't be batched even when using the same texture. So that can make it much less performant, but if it isn't an issue just rendering the Rig on its own i doubt that would be the problem.

Secondly, what resolution is the Subviewport set to? Maybe it's a lot higher than you would need given how big the ViewportTexture will then be rendered in the 3d world.

[modern depot]

1. If i just run the rig in a 2d space it runs perfectly fine, so I doubt that is the case

2. Ive tried shrinking the sprite down and displaying the shrunk sprite, but it brought minimal improvements

[patent dagger]

how exactly have you tried to shrink the sprite down?

can you show a screenshot of the SubViewport's settings?

[modern depot]

Literally scaled them down via manual transforms and cropping out the empty space for the subview

I'm outside rn so it gotta be later

Apologies

[patent dagger]

okay, that should be equivalent to the method i had in mind. Subviewport have the size_2d_override-settings that allow you to change the resolution it renders to without having to adjust the scale of nodes or the visible area of the Viewport.

I remember that there are certain performance-caveats to using subviewports, but that shouldn't be that extreme in my experience.

[modern depot]

Is whatever i set for that the exact number of pixels it outputs?

[patent dagger]

size override will render to a texture with the dimensions you give them if that's what you are asking

[karmic forum]

Technically speaking, Limbus doesn't do that, actually

[modern depot]

I've realised, yes

But i do want to try a 3d approach

[karmic forum]

It's not exactly what I mean

they have an animated idle sprite + a set of sprites for moving/Dodging/attacking/Hurt

You can just pre-render a set of motions and use them as animated sprites

[modern depot]

Even the idle animation?

The look pretty smooth from what i remember

[modern depot]

I see i see

[karmic forum]

yep. You can find an animated sprite on the wiki

just as an example

[modern depot]

Dang

Ive been bamboozled

[patent dagger]

you sure this is really just a single animated sprite? because i have often seen wiki's just show those, but the game internally still uses Rigs for animation.

[karmic forum]

yeah, I am pretty sure. The animations of skills themselves are choppy for ease of animation, and all smoothness is added by other effects, like fire flashes and such

[patent dagger]

i mean that could just have been a stylistic choice

[karmic forum]

https://limbuscompany.wiki.gg/images/Molar_Office_Fixer_Yi_Sang_Skill_1.gif

[patent dagger]

but yeah, that's definitely not done wiht a rig

[karmic forum]

I think it is done with a rig - the weapon is definetely skewed

just not in-game

[patent dagger]

yeah, prerendered

[modern depot]

Honestly i can see prerenders working in my favour

[karmic forum]

maybe in something like Illustrator or equivalent program

[patent dagger]

but i mean doing it in real-time should still be feasible.

[modern depot]

Godots animation editor is pretty wacky ..

[karmic forum]

AFAIK Godot isn't really fit for animation

that could work though for when you need dynamic animatons

like if your char is walking AND holding a gun while looking in the aiming direction

[modern depot]

Well, feels unlikely im gonna need that

Im not making a system where they can wield different weapons

At most those dynamic stuff is probably just hair or cloth physica

[karmic forum]

also I looked up - you most probably wuld need to use GPU for all that, it will 100% improve your fps

[modern depot]

How do i do that is the question

[karmic forum]

Uhhh... Idk, lol

never looked into that until now

[pulsar ingot]

from having used subviewports into textures for many objects like cards... might be worth looking into making a 3d rig (that's plain like a 2d object)

[modern depot]

thats also fair

i think im considering just going with the pre-rendered Sprites

more editable for an artist like me anyways

but for the sake of resolving this for whatever next person that needs it

[patent dagger]

okay that does look like correct settings...

[modern depot]

and i take back what i said, even in 2D my frames are getting tanked

[patent dagger]

okay in that case it seems like the rig itself is already too demanding

[modern depot]

looks like this is a no bueno

[patent dagger]

could you maybe check how the fps react to you hiding the rig?

[modern depot]

idk if this counts but hiding the entire rig makes my editor smoother

[patent dagger]

okay, that means the issue should be the rendering and not the logic of the skeleton deforming the polygons.

although of course only if that logic would still be executed even when the rig is hidden. Alternatively you could see how the fps react when you reduce the render resolution a lot.

could you maybe show how the polygons look like structurally?