#1926: g.gui.animation: parallel rendering with d.rast and d.vect
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Reporter: huhabla | Owner: grass-dev@…
Type: enhancement | Status: new
Priority: normal | Milestone: 7.0.0
Component: wxGUI | Version: svn-trunk
Keywords: animation | Platform: All
Cpu: All |
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I would suggest to use d.rast and d.vect to create the render images in
parallel in g.gui.animation.
At the moment r.out.ppm is used to create the render images which is IMHO
insufficient. There is no way to support vector maps with this approach.
In addition, the size of the render images should not depend on the
current region settings. It should be dependent on the size of the
animation render window. This can not be archived with the current
approach without tweaking the region settings.
Using d.rast and d.vect lets specify the size of the render images using
GRASS_WIDTH and GRASS_HEIGHT in the render process and allows the parallel
rendering of several images at the same time.
I have attached a patch to enable the parallel rendering of raster and
vector maps in the BitmapProvider class. It seems to me that this approach
is much faster on a multicore system then the current approach.
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Ticket URL: <http://trac.osgeo.org/grass/ticket/1926>
GRASS GIS <http://grass.osgeo.org>
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