What buffers to use for stereo in Qt using QOpenGLWidget?

Question

I'm trying to do a stereoscopic visualization in Qt. I have found some tutorials but all of them use the older QGLWidget and the buffers GL_FRONT_LEFT and GL_FRONT_RIGHT .

AS I'm using the newer QOpenGLWidget I tried drawing images to the same buffers but the call to glDrawBuffer(GL_FRONT_LEFT) is generating a GL_INVALID_ENUM .

I also saw that the default buffer is GL_COLOR_ATTACHMENT0 instead of GL_FRONT_LEFT so I imagine I need to use a different set of buffers to enable stereo.

Which buffers should I use?

Answer 1

you should use

glDrawBuffer(GL_BACK_RIGHT); glDrawBuffer(GL_BACK_LEFT);

look this link

I am working on the same thing with Nvidia Quadro 4000 . No luck yet, I got 2 images slightly offset, the IR tansmitter light up BUT the screen flicker!

GOT IT: the sync was 60hz, I put it to 120 and everything works fine I still need work on the right/left frustrum to say eureka.