Posted by Wade Walker on Apr 07, 2011; 1:18am
URL: https://forum.jogamp.org/refresh-problem-when-stereo-requested-but-not-available-on-Linux-64bit-tp2784744p2788005.html

blainebell wrote

I am definitely puzzled by the lack of responses towards my posts on this forum.  It could be that I am missing out on documentation that could help me get up to speed.  Forgive me for my ignorance about JoGL.  Any feedback would be much appreciated.

Hi Blaine,

My guess is that you're one of the few people experimenting with stereo rendering right now, so maybe no one feels qualified to comment  The maintainers are always swamped, so issues like yours that are more esoteric might not get as much attention as an outright crash.

One thing that would definitely get attention would be to write a JUnit test case for stereo rendering and submit it as a pull request (instructions at http://jogamp.org/wiki/index.php/How_to_Contribute). You could adapt your existing code into a JUnit test case pretty easily, and once it's added to the test suite, we could get some idea of how widespread this problem is.

One question I'd have is, does the distortion in your picture show up if you capture the contents of the GL framebuffer, or is it only visible on the screen? As long as it shows up in the framebuffer (you can write it out with com.jogamp.opengl.util.awt.Screenshot), it should be possible to write a unit test that checks the framebuffer for black pixel that shouldn't be there (the test com.jogamp.opengl.test.junit.jogl.demos.gl2.gears.TestGearsGLJPanelAWTBug450 checks pixels in the framebuffer in a way similar to what you'd have to do).