Am 10.03.2015 um 16:42 schrieb Paul Hartmann: > I would be very interested in a basic benchmark / proof of concept!
Here you go. Some hours of work, and JOGl renders basic lines. To make it fair, I removed everything except the line rendering from the Java2D renderer. Those are the results for a big area: Jogl: [1] > phase 1 (calculate styles): 5005 ms; phase 2 (draw): 1174 ms; total: 6179 ms > (scale: 13284.212039380947 zoom level: 10) > phase 1 (calculate styles): 4823 ms; phase 2 (draw): 1159 ms; total: 5982 ms > (scale: 13284.212039380947 zoom level: 10) > phase 1 (calculate styles): 4865 ms; phase 2 (draw): 1124 ms; total: 5989 ms > (scale: 13284.212039380947 zoom level: 10) Java2D: [2] > BENCHMARK: rendering phase 1 (calculate styles): 1277 ms; phase 2 (draw): > 12873 ms; total: 14150 ms (scale: 13284.212039380947 zoom level: 10) > BENCHMARK: rendering phase 1 (calculate styles): 1284 ms; phase 2 (draw): > 12793 ms; total: 14077 ms (scale: 13284.212039380947 zoom level: 10) > BENCHMARK: rendering phase 1 (calculate styles): 1275 ms; phase 2 (draw): > 12853 ms; total: 14128 ms (scale: 13284.212039380947 zoom level: 10) And a smaller area: Jogl: [3] > phase 1 (calculate styles): 298 ms; phase 2 (draw): 9 ms; total: 307 ms > (scale: 1224.6553582468273 zoom level: 13) > phase 1 (calculate styles): 285 ms; phase 2 (draw): 10 ms; total: 295 ms > (scale: 1224.6553582468273 zoom level: 13) > phase 1 (calculate styles): 290 ms; phase 2 (draw): 9 ms; total: 299 ms > (scale: 1224.6553582468273 zoom level: 13) Java2D: [4] > BENCHMARK: rendering phase 1 (calculate styles): 37 ms; phase 2 (draw): 562 > ms; total: 599 ms (scale: 1224.6553582468273 zoom level: 13) > BENCHMARK: rendering phase 1 (calculate styles): 41 ms; phase 2 (draw): 562 > ms; total: 603 ms (scale: 1224.6553582468273 zoom level: 13) > BENCHMARK: rendering phase 1 (calculate styles): 40 ms; phase 2 (draw): 576 > ms; total: 616 ms (scale: 1224.6553582468273 zoom level: 13) The Java2D phases are clear (have a look at the source). The JOGL phase 1 contains creating the line geometry (computing positions on screen, ordering by layer, ...). This can be cached and is a quick and dirty solution currently (some hashtables, lots of temporary objects and no nice line caps). I think I can get that down to be more like the old values, but probably not as low as those are (for a re-render. Unchanged objects could be skipped in this phase, changing of objects after zooming delayed). Phase 2 is the time required to collect all triangle buffers and send them to the graphic card (no VBOs/optimizations used at the moment, those would speed up phase 2 even more...) Here are the screen shots: [1] http://michael.fam-zangl.net/osm/josm-jogl.png [2] http://michael.fam-zangl.net/osm/josm-java2d.png [3] http://michael.fam-zangl.net/osm/josm2-jogl.png [4] http://michael.fam-zangl.net/osm/josm2-java2d.png Michael _______________________________________________ josm-dev mailing list josm-dev@openstreetmap.org https://lists.openstreetmap.org/listinfo/josm-dev
