[Qgis-developer] Using the power of GPU/OpenCL

[Martin Dobias]

On Fri, Aug 12, 2011 at 2:07 PM,  <jr.morreale at enoreth.net> wrote:
>
> Since PAL is now more or less a QGIS only feature, would an
> opencl/multithread path be an improvment ?

Not really. PAL has a performant engine for label placement, but in
various places it implements naive versions of some algorithms used in
extraction of label candidates and that ruins the performance
completely. The answer is to use more sophisticated algorithms. Of
course one can try to optimize the speed of naive algorithms by
running them on GPU, but that is not the real solution.

Martin