Edit a small portion of a 2DTexture in a shader?

lethal-raptor-games

I'd like to update small parts of a large texture in my shader, I thought "glTexSubImage" might be what I should use but now I'm not sure. The texture is a heightmap and I'd like to edit a few pixels at a time if the terrain is modified by the player.

Calinou

You could use the LargeTexture class, which allows storing several smaller textures inside and combining them into a single texture.

lethal-raptor-games

It looks like the class is deprecated and will be removed in 4.0 though... if I did use it, I would still have to send the whole texture again to the GPU?

I thought I could maybe use a sampler2DArray, and edit a layer at a time. Would be much quicker than editing a few pixels and uploading a few hundred MB all over again...

Calinou

@"Lethal Raptor Games" said: It looks like the class is deprecated and will be removed in 4.0 though...

Indeed: https://github.com/godotengine/godot/pull/48269

As for the rest of the question, I'm not knowledgeable enough in that field to answer it.