
- set env.var TKSDL_FULLFRAME to force FPS precision to 1.0
   (workaround for buggy gettimeofday(), should usually not be needed)
 
- set env.var TKSDL_GLERROR=1 to enable GL error trace (call glError() after each GL call)


compile time options:

DX_GLES - Compile with OpenGL ES support

DX_GLES_GLEMU - Compile with Desktop OpenGL emulation support (must also be enabled in tkopengl)

DX_OMAP3 - Compile with OMAP3 support (init EGL, don't use SDL_OPENGL flag)

DX_DNX_POKY - Compile with DaveNX/PokyLinux support (minimal implementation that does not use SDL)
