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List:       openjdk-2d-dev
Subject:    [OpenJDK 2D-Dev] =?utf-8?q?OpenGL_Pipeline?=
From:       neugens.limasoftware () gmail ! com (=?utf-8?B?bmV1Z2Vucy5saW1hc29mdHdhcmVAZ21haWwuY2
Date:       2011-06-07 10:30:56
Message-ID: 4dedfe10.9139e30a.43f2.1846 () mx ! google ! com
[Download RAW message or body]

I don't get any output on jdk 6 (fedora 15 default one) for some reason.

About the ogl pipeline, when I implemented one (gles - albeit more basic than what \
sun has of course) for aicas I was stuck on a fundamental problem: frequent updates \
to the drawing surface are killing performance more than caching the rendering ops \
and drawing the "frame" from scratch.

In my opinion is a fundamental design problem, and it's true that some drivers \
address this better than others when some specific extension is available, but in \
general all consumer hw is reliably sucking at this :)

Mario
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----- Reply message -----
Da: "Clemens Eisserer" <linuxhippy at gmail.com>
Data: mar, giu 7, 2011 11:55
Oggetto: [OpenJDK 2D-Dev] OpenGL Pipeline
A: "2d-dev" <2d-dev at openjdk.java.net>

Forgot to mention, the version included in openjdk6 is really old - I
recommend JDK7.

- Clemens

2011/6/7 Clemens Eisserer <linuxhippy at gmail.com>:
> Hi Mario,
> 
> Unfourtunatly the OpenGL pipeline suffers a lot from broken drivers.
> Drivers seem to be optimized a lot for the "game"-case, where a frame
> is repainted over and over again.
> 
> I remember I read somewhere in nvidia's release-notes that some bugs
> related to the opengl backend have been fixed in a recent nvidia
> driver version,
> maybe a driver update helps?
> 
> 
> > Enabling it with -Dsun.java2d.xrender=True doesn't produce any output,
> > although things appear to be faster (it may be a psychological thing
> > though, didn't do any benchmark :)
> 
> When True is written with a capital 'T', you should get something
> like: "XRender pipeline enabled"
> 
> lg
> 
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