Overview

Stereowrap is an emulation layer implementing stereoscopic OpenGL visuals on top of non stereo capable OpenGL implementations. To do that it overrides, using LD_PRELOAD, the GLX visual selection functions (glXChooseVisual and glXChooseFBConfig), glDrawBuffer, and glXSwapBuffers to capture and composite the two stereo images rendered by the application, in a number of ways.

Presentation Methods

Currently stereowrap supports presenting the stereo pair in the following ways:

• parallel side-by-side (-m parallel)
• side-by-side (-m cross)
• color anaglyph
• red-cyan (-m redcyan)
• red-blue (-m redblue)
• green-magenta (-m greenmagenta)
• colorcode3d, aka amber-blue (-m colorcode)
• sequential left/right sync-ed to vblank (-m sequential)

Notes

The sequential mode is there to support circuits that drive shutter glasses from the VGA vsync signal, like this one.

The ColorCode3D anaglyph method is patented (US Patent #6687003). I live in the EU so I don't give a shit, but if you care you may compile stereowrap with colorcode disabled. Just modify the Makefile and add -DNOCOLORCODE at the end of the CFLAGS line to do that.

Usage

Example:

$ stereowrap -m redcyan glxgears -stereo