[Qgis-developer] Patch Proposal #1974 Render caching

[Andreas Neumann]

good - will test this next week.

Marco - do you think the separate QImages could help us with my layer 
masking proposal - to be discussed in Vienna or at one of the upcoming 
hackfests?

Thanks,
Andreas

Marco Hugentobler wrote:
> Hi Tim
>
> Wow, this is really cool and speeds up rendering in many situations.
>
> Now that every layer has its QImage to paint on, it might be a possibility to 
> render each in its own thread and have great performance on todays quad core 
> machines.
>
> Regards,
> Marco
>
> Am Samstag, 24. Oktober 2009 00.41:39 schrieb Tim Sutton:
>   
>> Hi Devs
>>
>> I've been working a little on implementing some render caching to make
>> QGIS feel more responsive and avoid unnecessary re-rendering of layers
>> when nothing has really changed.
>>
>> I've finished writing a simple caching mechanism and would like to ask
>> you to a) test and b) indicate if you are happy for this to go into trunk.
>>
>> The patch is here
>>
>> https://trac.osgeo.org/qgis/attachment/ticket/1974/qgis_rendercachepatch_v7
>> _23Oct2009.diff
>>
>> Note that caching is disabled by default - you need to enable it in the
>> Options dialog, rendering tab.
>>
>>
>> Regards,
>>     
>
>