[Qgis-developer] Re: Value tool plugin makes QGIS crash

[Radim Blazek]

On Mon, Mar 28, 2011 at 10:12 AM, Jürgen E. <jef at norbit.de> wrote:
> Hi Radim,
>
> On Mon, 28. Mar 2011 at 09:31:24 +0200, Radim Blazek wrote:
>> Can GRASS developers give us any suggestion how to solve this?
>
> Wouldn't it be possible to do the request on the cached image of the last draw
> request?

That would be possible. Do you mean a cache on driver level? Is it a
cache used  in QGIS for rendering somewhere at this moment? Is it
desired? 1000x800x8 = 64MB / layer, 10 layers ~ 0.6GB. What about
threads (map composer, globe)?

Rasters in fact, are not drawn as a single block, the picture is split
into more pieces, and that would also complicate caching.

Radim

> Jürgen
>
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