Accumulation buffer

OpenGL OpenGL: Advanced Coding
1

Hi,

I recently started to test accumulation buffer for antialiasing, motion blur and depth field purposes.

I’ve noticed that code is very slow (1-3 fps!! - I render a teapot in a display list of about 1000 triangles). Am I using wrong accumulation buffer or it’s slow itself? How games get fast motion blur?

Thanks,

2

The accumulation buffer is very powerfull, but in 90% of the cases its done in software, so its very, very slow. I only know of very few cards that have hardware accumulation buffer, and all are $2000+.
If performance is important, you must use alternative techniques, like doing multipass tricks in the back buffer or something else.

3

ok, thanks. Then I wont work with accumulation buffer.