Apply GLSL shader to only some letters

[csimlinger]

Hi,

I was wondering what solution would you recommend to apply a shader to only some letters?
So far I was generating each letter on a text mesh, so that I could apply a shader to individuell letters, but that was painfully slow, especially for longer text.

What approach is recommended?

Thanks!

[lojjic]

(Moved to a discussion)

I can't think of a good built-in way to do that; the nature of instanced rendering is that you can only have one material/shader applied to the whole thing.

If I needed to do that, I might try customizing the shader to apply the special effects to only certain characters, distinguishing them by gl_InstanceId (assuming webgl2).

Other ideas, anyone?