Render buffers

General TouchDesigner Discussion
1

What buffers are rendering in Render Top?

Is it possible to skip rendering depth buffer in Render Top?
And is it possible to choose what buffers to render?

I need to optimize very heavy scene and i don’t need depth buffer.

2

You can skip writing to the depth buffer in your MATs, but not globally in the Render TOP yet. I"m not sure how much this will actually save you though since it’s a pretty cheap operation. By default only a single color buffer and the depth buffer are written to in a Render TOP.

3

Thanks a lot!

4

It seems like the depth buffer still present even if i turn it off in the only material that i’m using.

This conclusion i made because:

  1. If i turn depth test off/on in the MAT, memory used for Render TOP isn’t changing.
  2. If i’m changing depth buffer format from 24 to 32 bit in Render TOP(even with depth test turned off), memory amount used by Render TOP is changing.
5

Correct, it doesn’t avoid the buffer getting allocated, it only avoids writing to the buffer.