Graphics Performance

[Thomas White]

On Sat, 4 Apr 2009 00:01:16 +1100
Carsten Haitzler (The Rasterman) <raster at rasterman.com> wrote:

> beware of jumping all over 3d as the solution. i have recently been
> working on a gles2 engine for evas. i have run it on 2 platforms
> (s3c6410 and omap3530). both with hardware opengles2 (and capable of
> high res etc.) and software beats gles2. yes - evas software
> rendering is faster. oddly enough the movial guys and trolltech (qt)
> guys see the exact same performance problems. gl is slower (i know
> that i and the trolls have seen about a 1/4 speed of gl vs software).

I'm really interested as to why this might be the case.  Do you have
any ideas?  Something like the increased overhead of the extra API and
latency associated with swapping contexts?

Tom