Is there a way to bypass max fragment samplers in OpenGL ES?

Question

I'm quite new to OpenGL ES but I'm trying to render multiple 2D images on the screen at once (uniform sampler2D and texImage2D, ...) however when I try to render more than 16 textures at once I get:

The number of fragment samplers (21) is greater than the maximum number allowed (16).

which I've learned from here and by looking at this there's a hard limit to the number of textures I can bind at once. However, for my particular application, I need to render about ~30 images at once. Is there any workaround and is there any particular way I can render that many images?

Edit: Combining several images into one big image doesn't work very well in my case.

"*I need to render about ~30 images at once.*" What is your fragment shader actually doing that you need to index so many images in the same draw call? — Nicol Bolas, Sep 15 '20 at 13:32

score 0 · Answer 1 · answered Sep 15 '20 at 15:04

0

The only bypass I know is to put multiple images in one and bind this large texture and extract this images via texture coordinates.

answered Sep 15 '20 at 15:04

phil

21
3

Thanks but this doesn't really work for my particular use case – SSBakh Sep 15 '20 at 15:14
Why is this not working in your particular use case? – phil Sep 15 '20 at 15:21
It's not very viable for my particular application – SSBakh Sep 16 '20 at 10:27

Is there a way to bypass max fragment samplers in OpenGL ES?

1 Answers1