Const iterators

[Boudewijn Rempt]

On Monday 28 March 2005 22:41, Adrian Page wrote:

> Currently the process of blitting a 20x20 brush onto a layer updates a
> 64x64 square, which is about 10 times as many pixels as it needs to.
> This is one of the reasons painting is slower now than it was before,
> because of the tile based extents. An easy solution to that is to set
> the extent manually, but it shows that it's not just user interface code
> that's involved.

I wonder whether it wouldn't help to have a paint device that implements a 
simple, small framebuffer for things like brushes and other small things that 
don't need undo and won't grow big.

-- 
Boudewijn Rempt 
http://www.valdyas.org/fading/index.cgi
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