RE: [ft] Speed/Quality adjustments

[Riede.Edward]

Unfortunately the ftcache.c locks up the compiler for my target. (it just 
hangs, no warnings or errors), so I am not caching the rendered bitmaps at the 
moment.  This is an option if I write my on cache or 'fix' the included one, 
but it obviously won't speed the first rendering. The depth of the cache I can 
have and available memory are not necessarily constant, so the subsequent 
renderings are questionalble.  I would also like something deterministic if I 
could get it.  I am considering pre-rendering to eprom at compile time, then 
copying the results without rendering on the target.   

Ed

-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Wenlin Institute
Sent: Friday, November 10, 2006 10:21 AM
To: address@hidden
Subject: Re: [ft] Speed/Quality adjustments

Are you caching the bitmaps produced by freetype? If not, that's  
probably the best way to make it faster.

Tom

On Nov 10, 2006, at 7:45 AM, Riede.Edward wrote:

> I have been investigating embedding freetype into one of our  
> platforms, and it looks great, but runs really slow.  I was  
> wondering if there are any adjustments that I could make to the  
> engine to speed it up a bit?  The rendering times on our platform  
> are unbearably slow.   I would like a speed improvement of about  
> x32. (I know it is a lot to ask.)
>
>
>
> I am thinking about changing the sub pixel resolution.  Our  
> platform only displays in 16 bit color, so it seems to me that the  
> 64x64 sub-pixel’s/pixel could be reduced.  64x64 would give 4096  
> units/pixel.  I would think that this could be reduced to 32 units/ 
> pixel for the 5 bit component, or 96 units/pixel for lcd  
> rendering.  32 units per pixel would need a 5x5, and 96 would need  
> a 10 x 10.
>
>
>
> It seems like this could give me the speed improvements that I  
> need.  Is this possible?
>
>
>
>
>
> Ed
>
>
>
>
>
> _______________________________________________
> Freetype mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/freetype


文林 Wenlin Institute, Inc.        Software for Learning Chinese
E-mail: address@hidden     Web: http://www.wenlin.com
Telephone: 1-877-4-WENLIN (1-877-493-6546)
☯







_______________________________________________
Freetype mailing list
address@hidden
http://lists.nongnu.org/mailman/listinfo/freetype