How do I render a square? | The Fabric Project | Page 1

hushed moat May 10, 2025, 6:25 PM

#

I have this method and I need to use that VertexConsumer to render a square of the texture.

override fun render(
        poseStack: PoseStack,
        multiBufferSource: MultiBufferSource,
        i: Int,
        entityRenderState: HappyGhastRenderState,
        f: Float,
        g: Float
    ) {
        val vertexConsumer = multiBufferSource.getBuffer(RenderType.entityCutoutNoCull(RENDER_TYPE_ID))
    }

hushed moat May 11, 2025, 3:42 AM

#

bump

hushed moat May 11, 2025, 6:21 AM

#

Edit: Now I have this but the texture renders pure black, and I have no idea what uv1 and uv2 and normal are because chatgpt wrote it

override fun render(
        poseStack: PoseStack,
        multiBufferSource: MultiBufferSource,
        i: Int,
        entityRenderState: HappyGhastRenderState,
        f: Float,
        g: Float
    ) {
        val vertexConsumer = multiBufferSource.getBuffer(RenderType.entityCutoutNoCull(RENDER_TYPE_ID))
        val pose = poseStack.last()

        // Bottom-right vertex
        vertexConsumer.addVertex(pose, 0.0f, 0.0f, 0.0f)
            .setColor(255, 255, 255, 255)
            .setUv(0.0f, 1.0f)
            .setUv1(0, 240)
            .setNormal(0.0f, 0.0f, 1.0f)
            .setUv2(0, 0)

        // Top-right vertex
        vertexConsumer.addVertex(pose, 1.0f, 0.0f, 0.0f)
            .setColor(255, 255, 255, 255)
            .setUv(1.0f, 1.0f)
            .setUv1(0, 240)
            .setNormal(0.0f, 0.0f, 1.0f)
            .setUv2(0, 0)

        // Top-left vertex
        vertexConsumer.addVertex(pose, 1.0f, 1.0f, 0.0f)
            .setColor(255, 255, 255, 255)
            .setUv(1.0f, 0.0f)
            .setUv1(0, 240)
            .setNormal(0.0f, 0.0f, 1.0f)
            .setUv2(0, 0)

        // Bottom-left vertex
        vertexConsumer.addVertex(pose, 0.0f, 1.0f, 0.0f)
            .setColor(255, 255, 255, 255)
            .setUv(0.0f, 0.0f)
            .setUv1(0, 240)
            .setNormal(0.0f, 0.0f, 1.0f)
            .setUv2(0, 0)
    }

worldly thunder May 11, 2025, 3:12 PM

#

hushed moat Edit: Now I have this but the texture renders pure black, and I have no idea wha...

why are you drawing a square using vertexconsumer, 2. are you trying to have an outline or fill?

hushed moat May 11, 2025, 4:51 PM

#

worldly thunder 1. why are you drawing a square using vertexconsumer, 2. are you trying to have ...

I am trying to add a rendered texture to the happy ghast entity which i found out is done using RenderLayer
It's a texture

worldly thunder May 11, 2025, 4:52 PM

#

hushed moat 1. I am trying to add a rendered texture to the happy ghast entity which i found...

use drawcontext

hushed moat May 11, 2025, 4:57 PM

#

worldly thunder use drawcontext

where do i get one?

worldly thunder May 11, 2025, 4:59 PM

#

hushed moat where do i get one?

wait are trying to render a texture onto the ghast? or a gui texture?

hushed moat May 11, 2025, 5:01 PM

#

not onto a ghast, a bit beside it

#

but as part of it's renderer

hushed moat May 11, 2025, 5:02 PM

#

hushed moat I have this method and I need to use that `VertexConsumer` to render a square of...

this is the method i have access to

worldly thunder May 11, 2025, 5:03 PM

#

i have no idea

frail jay May 11, 2025, 5:19 PM

#

hushed moat this is the method i have access to

try getting a sprite of your texture

#

and do this

VertexConsumer vertexConsumer = multiBufferSource.getBuffer(RenderLayer.getEntityTranslucent(sprite.getAtlasId()));

instead of your current way of creating a vertex consumer

hushed moat May 12, 2025, 11:56 AM

#

I'm doing it how it is done in vanilla, and as I said, it does render the texture, but only a silhouette of it which likely means i set the wrong values for the vertices

frail jay May 12, 2025, 11:59 AM

#

try adding them in a counter clockwise order

#

i'm not sure

frail jay May 12, 2025, 12:11 PM

#

hushed moat I'm doing it how it is done in vanilla, and as I said, it does render the textur...

and can you maybe send a picture?

hushed moat May 12, 2025, 12:37 PM

#

frail jay and can you maybe send a picture?

#

(The texture id is ender pearl)

#

val RENDER_TYPE_ID: ResourceLocation = ResourceLocation.withDefaultNamespace("textures/item/ender_pearl.png")

hushed moat May 12, 2025, 12:41 PM

#

frail jay try adding them in a counter clockwise order

they are added counter clockwise, starting with bottom-right

frail jay May 12, 2025, 1:28 PM

#

maybe .light(i) on each vertex

frail jay May 12, 2025, 1:28 PM

#

hushed moat they are added counter clockwise, starting with bottom-right

ye mb i'm on my phone rn

frail jay May 12, 2025, 1:30 PM

#

frail jay maybe `.light(i)` on each vertex

maybe the texture isn't lit properly?

hushed moat May 12, 2025, 3:50 PM

#

frail jay maybe `.light(i)` on each vertex

good idea! I didn't see that method

frail jay May 12, 2025, 3:53 PM

#

so??

#

does it work??

hushed moat May 12, 2025, 4:10 PM

#

nope

#

I think it might have something to do with the uv1, or overlay as it is called on yarn

frail jay May 12, 2025, 4:10 PM

#

do you plan on rendering an item on the ghast?

hushed moat May 12, 2025, 4:11 PM

#

no, i just didn't do the texture yet

frail jay May 12, 2025, 4:12 PM

#

maybe just make the texture an item

#

and use the builtin function

#

or just test it with the builtin function rn

hushed moat May 12, 2025, 4:13 PM

#

its going to be a propeller that is rendered on the back of the ghast but offset from it's body

#

maybe i should make an entity model for it and add that to my renderlayer

#

but I have no idea how that will work

#

Do you have any suggestions on a potentially easier way to do this?

frail jay May 12, 2025, 4:17 PM

#

maybe a last idea

#

for the setNormal

#

maybe try 0f, 1f, 0f

hushed moat May 12, 2025, 4:18 PM

#

ok

#

still same

#

maybe the uv1

#

idk what it is

#

chatgpt set it to some completely random number

frail jay May 12, 2025, 4:19 PM

#

do you know what setUv2 does??

hushed moat May 12, 2025, 4:19 PM

#

the lightmap apparently

frail jay May 12, 2025, 4:19 PM

#

huh

hushed moat May 12, 2025, 4:19 PM

#

its what the setLight method changes

frail jay May 12, 2025, 4:20 PM

#

try and remove it

#

i dunno bro honestly

hushed moat May 12, 2025, 4:20 PM

#

hmm in yarn uv1 is called overlay

#

it crashes if any of the values are missing

#

do you know what this is?

#

default VertexConsumer setOverlay(int i) { return this.setUv1(i & 65535, i >> 16 & 65535); }

frail jay May 12, 2025, 4:21 PM

#

yes

#

this is the method i know

#

okaaayyyy

hushed moat May 12, 2025, 4:21 PM

#

what is the parameter

frail jay May 12, 2025, 4:21 PM

#

try i

hushed moat May 12, 2025, 4:22 PM

#

i is the light though

#

i already used it for setLight()

frail jay May 12, 2025, 4:22 PM

#

but why aren't the arguments properly named??

hushed moat May 12, 2025, 4:22 PM

#

mojmap!

frail jay May 12, 2025, 4:22 PM

#

ooohhhh

#

wait im gonna see on yarn

hushed moat May 12, 2025, 4:23 PM

#

in yarn its not that much better as i can tell from linkie

#

bruh nothing is changing anything its still a black silhouette

frail jay May 12, 2025, 4:23 PM

#

even the setOverlay with i??

hushed moat May 12, 2025, 4:24 PM

#

yup

#

wait i found something

frail jay May 12, 2025, 4:24 PM

#

bruh

hushed moat May 12, 2025, 4:24 PM

#

OverlayTexture.NO_OVERLAY

#

IT WORKED!!!

frail jay May 12, 2025, 4:25 PM

#

NICEEEE

#

GGS BRO

hushed moat May 12, 2025, 4:25 PM

#

i saw that field in one of the things chatgpt wrote which didn't compile

frail jay May 12, 2025, 4:25 PM

#

do you know what an overlay is??

hushed moat May 12, 2025, 4:25 PM

#

Thanks for the help!

frail jay May 12, 2025, 4:25 PM

#

because bro

frail jay May 12, 2025, 4:25 PM

#

hushed moat Thanks for the help!

your welcome

hushed moat May 12, 2025, 4:26 PM

#

frail jay do you know what an overlay is??

i think it's like a color tint

frail jay May 12, 2025, 4:26 PM

#

ohh

#

okay i get it

#

nice find tho

hushed moat May 12, 2025, 4:26 PM

#

theres 3 other fields here

public static final int NO_WHITE_U = 0;
    public static final int RED_OVERLAY_V = 3;
    public static final int WHITE_OVERLAY_V = 10;
    public static final int NO_OVERLAY = pack(0, 10);

frail jay May 12, 2025, 4:26 PM

#

what were you using before?

hushed moat May 12, 2025, 4:27 PM

#

some random number chatgpt put

#

0, 240

#

now it's time for me to figure out pose stacks

frail jay May 12, 2025, 4:28 PM

#

good luck

hushed moat May 12, 2025, 4:29 PM

#

what does setNormal do though?

#

it works the exact same set to 0, 0, 0

frail jay May 12, 2025, 4:31 PM

#

do you know what a normal is?

hushed moat May 12, 2025, 4:31 PM

#

nope

#

this is my first time doing rendering

frail jay May 12, 2025, 4:31 PM

#

it's a vector that points straight up

hushed moat May 12, 2025, 4:31 PM

#

so the face to render on

frail jay May 12, 2025, 4:31 PM

#

that is perpendicular to the plane of the triangle

#

normally

#

and i say normally

hushed moat May 12, 2025, 4:33 PM

#

so it splits the set of 4 vertices into 2 triangles to render the quad?

frail jay May 12, 2025, 4:33 PM

#

frail jay and i say normally

it is used for light calculations

hushed moat May 12, 2025, 4:33 PM

#

hmm

frail jay May 12, 2025, 4:33 PM

#

but i don't know what it is used for in minecraft's rendering

frail jay May 12, 2025, 4:34 PM

#

hushed moat so it splits the set of 4 vertices into 2 triangles to render the quad?

basically a line that's at a 90 degrees angle to the triangle

main sorrel May 12, 2025, 8:20 PM

#

~~ItemRenderer go brrrrr~~

#How do I render a square?