[1.12.2] Binding texture to GlStateManager

[DavidM]

I am trying to render a sphere (with 3 layers) with textures as such: https://github.com/DanielHeEGG/RapidOxidation/blob/e5736a1eb97db41727802883dfc0906bd33507a3/src/main/java/com/daniel_egg/rapidoxidation/client/render/RenderFireball.java#L28-L50

The texture I used look like:

 

However, the sphere in-game looks like:

 

This is not desired; I would like the sphere to have the texture in picture one.

My current guess is that the texture on the sphere is scaled too large, resulting in only a tiny fraction of the texture is displayed.

How would I fix this problem?

[V0idWa1k3r]

Likely whatever GLU is doing to create the sphere either doesn't include UV coordinates at all or they are setup incorrectly.

The correct answer here is to not use GLU. I don't believe it is even included in lwjgl3 anyway(and 1.13 will use lwjgl3) so yeah. 

The easies option to render a sphere then to me would be to create and render a wavefront(obj) model instead.

[DavidM]

19 minutes ago, V0idWa1k3r said:

The easies option to render a sphere then to me would be to create and render a wavefront(obj) model instead.

I haven't really rendered wavefront models in Minecraft before; how would I bind textures to wavefront models via code?

Is it still through TextureManager#bindTexture (Minecraft.getMinecraft().renderEngine.bindTexture)?

[V0idWa1k3r]

Binding a texture is an action that is model-independent. Regardless of what and how you are rendering the binding of texture will always be the same.

[DavidM]

20 minutes ago, V0idWa1k3r said:

Binding a texture is an action that is model-independent. Regardless of what and how you are rendering the binding of texture will always be the same.

AFAIK wavefront models already contain the UV data in it; does that mean I'll have to create a new model for every texture?

[V0idWa1k3r]

UVs are just texture coordinates. You can bind whatever teture you'd like, the coordinates tell OpenGL where to get the colour from