Dear Andrea, Clemens, Dalibor, Jim & Phil,
As discussed recently, I am glad to contribute the Marlin renderer to the OpenJDK project as a new standalone Java2D rasterizer. This work is derived from OpenJDK's pisces rasterizer started since march 2013 (OpenJDK 8) and evolved a lot to become more and more efficient into my github repository: https://github.com/bourgesl/marlin-renderer I am the principal author of the code (OpenJDK's license = GPL2+CP) and got help from Andréa Aimée. Andrea Aimé contributed to on some marlin parts (CollinearSimpifier, optional) and provided the initial MapBench tool, a generic java2d benchmark based on serialized java2d command batches: https://github.com/bourgesl/mapbench This tool helped me a lot to run tons of benchmarks comparing rasterizers on several GIS Map workloads, but also to test rendering regressions... Andréa, could you confirm you want to contribute your marlin code to the the OpenJDK project too and have signed an OCA ? I made some code cleanup (line length ~ 80) but tried to keep it as close as the latest and fastest Marlin release 0.5.6 (yesterday) using sun.misc.Unsafe. I tested it with a full jdk9 build using the MapBench tool: it is working well except a bit slower than jdk8 (few percents). Maybe hotspot / JIT changed a lot ! openjdk version "1.9.0-internal" OpenJDK Runtime Environment (build 1.9.0-internal-bourgesl_2015_02_24_22_39-b00) OpenJDK 64-Bit Server VM (build 1.9.0-internal-bourgesl_2015_02_24_22_39-b00, mixed mode) To use it, just add the following argument: java -Dsun.java2d.renderer=sun.java2d.marlin.MarlinRenderingEngine ... If marlin is working, your should see the following lines in the standard output: INFO: =============================================================================== INFO: Marlin software rasterizer = ENABLED INFO: Version = [marlin-0.5.6-Unsafe-OpenJDK] INFO: sun.java2d.renderer = sun.java2d.marlin.MarlinRenderingEngine INFO: sun.java2d.renderer.useThreadLocal = true INFO: sun.java2d.renderer.useRef = soft INFO: sun.java2d.renderer.pixelsize = 2048 INFO: sun.java2d.renderer.subPixel_log2_X = 3 INFO: sun.java2d.renderer.subPixel_log2_Y = 3 INFO: sun.java2d.renderer.tileSize_log2 = 5 INFO: sun.java2d.renderer.useFastMath = true INFO: sun.java2d.renderer.useSimplifier = false INFO: sun.java2d.renderer.doStats = false INFO: sun.java2d.renderer.doMonitors = false INFO: sun.java2d.renderer.doChecks = false INFO: sun.java2d.renderer.useJul = false INFO: sun.java2d.renderer.logCreateContext = false INFO: sun.java2d.renderer.logUnsafeMalloc = false INFO: =============================================================================== INFO: AAShapePipe: overriding JDK implementation: marlin-renderer TILE patch enabled. As you can see, Marlin has many tuning parameters but also debugging flags: see https://github.com/bourgesl/marlin-renderer/wiki/Tuning-options Here is the initial webrev: http://cr.openjdk.java.net/~lbourges/marlin/marlin.0/ note: I included the AAShapePipe tile patch but it can be another one. Thanks for your review & testing this patch, PS: I plan to publish soon an up-to-date complete benchmark report comparing ductus, pisces & marlin (JDK8) and also several marlin settings (ThreadLocal vs ConcurrentLinkedQueue storage, with / without AAShapePipe tile patch ...) Laurent -- Laurent Bourgès
