[Virtualacorn-list] VRPC Suddenly Become Very Slow

[David J. Ruck]

On 22/07/2014 18:11, T.O.M.S. wrote:
> He normally runs in 32K colours, so he tried reducing to 256 colours,
> reducing screen resolution and so on, in the hope of speeding things up,
> but all to no avail.
>
> In desparation, he tried running in 16M colours - at which point RISC OS
> speeded up by "at least 5x".  :-)

All PC's run in 16M colour modes these days, there's no reason not to. 
So if VRPC is using a different colour depth, the screen has to be 
translated, and due to the different bit orders used by RISC OS, this 
may have to be done in software on the CPU rather than by the graphics 
card. If using the same colour depth as the PC, the graphics card can 
render it directly without using the CPU, which will be far quicker.

Cheers
---David
-- 
Email: druck at druck.org.uk
Phone: +44-(0)7974 108301