#2403: cairo driver fails to create surface ----------------------------------------+----------------------------------- Reporter: martinl | Owner: martinl Type: defect | Status: assigned Priority: major | Milestone: 7.0.0 Component: Display | Version: unspecified Keywords: cairo, resolution, surface | Platform: Linux Cpu: x86-64 | ----------------------------------------+-----------------------------------
Comment(by martinl): Replying to [comment:7 glynn]: > The PNG driver resamples each row and stores it directly in the image. Thanks for the hint. Could you please review attachment:cairo_down_sampling.diff which do down-sampling for Cairo in similar as already does PNG driver? Down-sampling has of course a significant speed effect when rendering larger rasters using their original region, eg. {{{ g.region rast=dmt -p ... rows: 11682 cols: 18913 cells: 220941666 ... # cairo: no down-sampling time GRASS_RENDER_IMMEDIATE=cairo d.rast dmt real 0m40.797s # cairo: down-sampling (patch applied) time GRASS_RENDER_IMMEDIATE=cairo d.rast dmt real 0m1.400s }}} -- Ticket URL: <http://trac.osgeo.org/grass/ticket/2403#comment:8> GRASS GIS <http://grass.osgeo.org> _______________________________________________ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev