Posted by JoglCoder on Dec 06, 2023; 9:01am
URL: https://forum.jogamp.org/Performance-tp4043199.html

Hello community,

I recently stumbled upon a project that uses JogAmp libraries for rendering graphics and using a bird's eye like perspective of objects in an old swing application.

We are currently using gluegen-rt-main and jogl-all-main in the version 2.3.2.

I tried to update to the version 2.5.0 as there seemed to be a problem with Citrix messing with the OpenGL32.dll or so I have read in another thread. This caused a problem, that the library did not work at all at computers running Citrix. Unfortunately the user feedback was, that the performance in relation to the 2.3.2 degraded.

If one applies the "NVIDIA Hardware Acceleration" instead of the "Integrated graphic driver" directly to the corresponding program, it is fast as before with the 2.3.2 version. However, as the software is used in quite old machines, we can not enforce customers upgrade their hardware.

So I tried to pinpoint the issue by trying out the 2.4.0 as well as the 2.5.0 version, but the result was the same.
The old one renders the objects "fluently" and the new versions judder.

As I am no expert with the library, I just used VisualVM to get a few methods we use quite often:

jogamp.opengl.gl4.GL4bcImpl.glNormal3f (float, float, float)
jogamp.opengl.gl4.GL4bcImpl.glVertex3f (float, float, float)
jogamp.opengl.gl4.GL4bcImpl.glBegin (int)
jogamp.opengl.gl4.GL4bcImpl.glBindTexture (int, int)
jogamp.opengl.gl4.GL4bcImpl.glEnd ()

The runtime environment is the Temurin release jdk-21.0.1+12. The issue has been reproduced with an Intel UDH Graphics 630.

Have there been any changes with regards to the nature of the graphics processing, that could explain this issue?

Thank you in advance!