$500 Bounty - 1.20.1 Custom Models on Player Body

[amber wraith]

what do you mean by render? You mean you want to add a model to the back of a player?

[void geyser]

yeah so in the same way that you can equip an item with custom model data on the head of a player to turn into cosmetics whatever, I'm needing the same thing but on the back/body of the player

[amber wraith]

don't you think $500 is too much for that sort of thing?

or do you want some professional lighting rendering done for an item?

[void geyser]

it's something that nobody has figured out whilst still keeping it server side thus far so i'm happy to pay that much

[amber wraith]

oh ok makes sense

[void geyser]

here is an example, the duck floatie is just a leather horse armour with custom model data but this was originally achieved with client side. it needs to be done now strictly server-side

[amber wraith]

oh it's stuck in the middle

and you want to flip it, and put it on the back?

[void geyser]

$500 Bounty - 1.20.1 Custom Models on Player Body

[void geyser]

no so the custom model just needs to be on the players body, i shouldn't have used the term rendering or back

that photo it is in the right spot, it needs to be attached to the players body without any delay in movement or lag

[amber wraith]

is the photo a clientside version? How do you get a model to show up in a serverside mod?

oh are you using a texturepack

you can use a tool to arrange it's position

[void geyser]

yes the photo is a clientside version

[amber wraith]

oh I bet you got it to work, but when you move, it jiggles around like it's in the player's hand

[amber wraith]

so you want to do this as a serverside?

you can use a texturepack and a serverside mod, or even a plugin to do this

you just have to force a texturepack in the server.properties of your server

and it should work

[void geyser]

i can't use hybrid servers as they are too unstable, and no server-side mods exist to place custom model data items onto a players back. if you do this normally, it will just not render the custom model

[amber wraith]

what if you use an armour stand, and a CustomModelData to assign it the rubberduck model, and use the serverside mod to keep it on the player's back

do you know what I mean

you need a texturepack though, which can be forced with a url

[void geyser]

the armour stand option has been explored but because it's just constantly teleporting the armour stand to the players pos, it has a delay in movement which is incredibly jarring, i need it to be seamless

[amber wraith]

I don't know how, but this server somehow made a plugin look like a mod

it's definitely possible

I don't know if I can help much though

[void geyser]

yeah hence why i need to find someone to make it possible

[amber wraith]

you have the duck as a model?

json file or something?

[void geyser]

yeah

[amber wraith]

you can make it equippable in the chestplate slot using your mod

[void geyser]

yeah the issue is it doesn't render though like it won't show anything

[amber wraith]

edit the model file using something like blockbench to position it how you want

[amber wraith]

it won't show up?

or is it in the wrong position

[void geyser]

it won't show because chestplates don't support custom models in the same way that head items do

[amber wraith]

oh

and equipping it as a head item won't be good enough because it takes up the slot

I think it might be dissapearing because you didn't position it right

the resource pack model

[night solar]

You could just check how the spigot plugins do it, afaik it's just an invisible armorstand (riding?)/following the player

[amber wraith]

no they're too laggy or something he said

@void geyser I think you're not using armour stands correctly

make the armour stand ride the player, like you can make mobs ride each other

it should fix the lag issue

good luck

[magic geyser]

are the models created by attaching display entities? if so then you can use polymer virtual entities to attach display entities on player with EntityAttachment

can even use that for animated models if you wanted to, like using nylon library for example

oh and for the "lag issue": interpolation can be applied to display entities for smooth looking animations

normally it would updates 20 times a second (aka 20 fps) but with interpolation, it will looks like it's being animated at your game's frame rate

[hard prairie]

it’d probably still be difficult to sync that up to the position of specific modelparts tho

if not impossible

so i see the issue here

[cedar stag]

Nylon may help with this. Not easy, but theoretically possible.

[winged aurora]

I assume a resource pack is okay?

[void geyser]

yeah that's how you'd get the model, but attaching it to the body is the hard part

[winged aurora]

Can’t you just make something ride the player, and the model to that?

Seems pretty simple

Although rotation may be tricky

Hmmmm, I’ll have to experiment

[void geyser]

rotation is the current limitation

[magic geyser]

im not sure what's the current problem with rotations

[winged aurora]

An entity riding ontop the player won’t match the rotation of the player exactly

Unless I’m mistaken

[magic geyser]

you can keep setting the yaw of the entity

[winged aurora]

Oh I guess so. Yeah you could probably get it pretty close. But I think there will always be a little lag between the body moving on the client and the server getting that and then sending the rotation packet back to the client. You could probably get it close with interpolation, but it would be tricky

[magic geyser]

i did thought of using vertex shader, but it couldn't be used for generating vertices for model because it is for transforming vertices only

[winged aurora]

Oh smart

[magic geyser]

if there is support for geometry shader in vanilla it would be really nice

[winged aurora]

Perhaps all the rotation could be handled via a shader?

Load the model in statically facing one direction and rotate it with the shader?

I don’t know nearly enough about shaders to know if that’s a real solution

[magic geyser]

how does one even do that 🤔

rn im modifying the armor cutout shader

[winged aurora]

I know it’s possible to rotate a mesh using just linear transforms, I watched a good video on it recently. But I’m not sure if that can be done in a shader

[magic geyser]

problem is: i couldn't find a way to get player's rotation when modifying the item model shader

[winged aurora]

Ah. That would be a problem

[magic geyser]

each component is completely separated from each other

[winged aurora]

Like the body parts?

[magic geyser]

i mean player and item

[winged aurora]

Ooo

Yeah I got nothing

[magic geyser]

overkill solution would be 1. make the vertex shader map vertices to a small square in screen space, and 2. emulate vertex + fragment shader in the fragment side (or use sdf magic idk tbh)

i have seen someone emulated the vertex + fragment shader pipeline with just fragment shader alone on shadertoy

[magic geyser]

ok so: with armor cutout shader, in theory you need a model for each part of the armor (legs, chest, hands, etc.)

and then we emulate the shader pipeline on fragment shader

the issue right now is: how do i make depth testing works as intended

for those that want to try implementing this: UV0 vertex attribute in armor_cutout_no_cull tell you the coordinates of the vertex on the armor texture so use that to identify which model part the game is trying to render, then use rasterizer like https://www.shadertoy.com/view/XdlGzn to generate model on fragment shader side

[magic geyser]

ok nvm you can just use this https://github.com/DartCat25/CEM-S

this one uses ray tracing so it's more or less the same as my intention to use rasterizer

[winged aurora]

Oh shoot

I guess it’s been done haha

[void geyser]

only issue with this is it won’t work with iris or optifine

[magic geyser]

i think it doesn't work with user's shaders because of vanilla-style lightning on the models

your best other option is to attach display entities on player

[void geyser]

like a display armor stand? only issue was it didn't track rotation

[magic geyser]

huh wait does 1.20.1 have display entities 🤔