WebGL2 sampler2DArray

[AlexB 9]

One of the killer new features in WebGL2 is the "sampler2DArray" uniform type. Apparently, we can use it to:

 

Quote

Texture arrays

A texture array is very similar to a 3D texture except that each slice is considered a separate texture. All the slices have to be the same size but this is a great way to give a shader access to hundreds of textures even though it only has a relatively small number of texture units. You can select the slice in your shader

EX: vec4 color = texture(someSampler2DArray, vec3(u, v, slice));

This would be a game changer for a project I'm working on, as it uses a shader which needs many textures as uniforms and we're hitting the limit regularly. Any thoughts on implementing this feature?

[Deltakosh 4315]

We will  But if you feel ok to implement it, please do:)

 

[AlexB 9]

1 minute ago, Deltakosh said:

We will  But if you feel ok to implement it, please do:)

 

We could look into it. Can you give a little clue into where that would happen in the code? The current project is using ThreeJS but this could be the reason to switch :-)

[Deltakosh 4315]

If webgl2 is supported (check engine.webGLVersion), you should do something like this:

https://github.com/BabylonJS/Babylon.js/blob/master/src/Materials/babylon.effect.ts

and also update (and do the actual call) inside engine like here:

https://github.com/BabylonJS/Babylon.js/blob/master/src/babylon.engine.ts#L3669