Where olpc machine spending time when using web broswer

[Carl Worth]

On Thu, 15 Mar 2007 16:38:05 -0400, Adam Jackson wrote:
> There's just no making software texture interpolation fast enough.

It didn't sound like the use case being profiled here needed arbitrary
transformations, (or even bilinear filtering). It sounded to me like
just integer scaling, (which, as you touched on later, should allow us
plenty of ways to cheat). And yes, the code should be asking for
nearest neighbor filtering if that's all it needs.

> That Render includes transforms and filters is very nearly academia
> levels of solipsism.  You just can't make them go fast in software, and
> we already had a working API for doing them in hardware.  Using Render
> for untransformed alpha blending is at least reasonable to do in
> software; Render ought to have stopped there.

I think getting worked up about the Render interface isn't
worthwhile. No applications that I'm aware of are coding directly to
Render---none. The interface that is being used in applications is
cairo, so all we have to do is make sure that cairo hits the right
paths.

And yes, cairo is currently calling into Render for transformations.

Are you saying that cairo should be using something else instead and
it will get better performance today? If so, I'm all ears. What should
I be using instead to make cairo go faster?

-Carl
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