Create custom mipmap for custom GLSL shader

Questions
1

I am trying to create a mipmap texture load with my custom GLSL shader
here is what I got:
new BABYLON.Texture can provide the mipmap and I am able to load it with
vec4 cd= texture(myLoadTx, vec3(clamp_uv_inv, miplevel));
however I would like to replace the mipmap with certain levels, is there a way to handle it?
for example: get the mipmap data with javascript and replace it with another image

or is there way around it? but be able to customize the mipmap is needed!
I saw this one: https://sbcode.net/threejs/custom-mipmaps/

can I do something like that?

2

Babylon doesn’t directly allow providing custom mipmaps like three.js does. We mostly rely on GL’s generateMipmaps to create those. However, it is possible, though it requires calling internal functions:

Custom mipmaps using engine internal functions | Babylon.js Playground (babylonjs.com)

Zoom out to see the effect. I took the liberty to copy the texture creation function from the three.js demo :slight_smile:

2 Likes
3

Thank! I will check it out

1 Like