[compiz] Blur is incredibly slow on the intel i915

[David Reveman]

On Sun, 2007-11-25 at 20:15 +0900, Sam Spilsbury wrote:
> I'm getting about 1 frame every 7 seconds with alpha or focus blur
> enabled. Is this normal? I get around 30-40 FPS when using water on
> high settings.

Yes, that's expected. The driver need to accelerate glCopyTexSubImage2D
for blur plugin to be usable.

> 
> Would framebuffer_object support for the driver be of any use? Would
> it make things faster?

Framebuffer object support itself isn't going to help but a driver that
supports framebuffer objects is also very likely to accelerate
glCopyTexSubImage2D so switching to such a driver might very well help.

-David