Left out initialization of 'surfacearea' shader global.  Add it so that 'testshade' may be used to test shaders that call it.
Left out initialization of 'surfacearea' shader global.  Add it so that
'testshade' may be used to test shaders that call it.

qdtk/openshadinglanguage,tectronics/openshadinglanguage,qdtk/openshadinglanguage,h3rb/openshadinglanguage,h3rb/openshadinglanguage,h3rb/openshadinglanguage,tectronics/openshadinglanguage,tectronics/openshadinglanguage,h3rb/openshadinglanguage,qdtk/openshadinglanguage,tectronics/openshadinglanguage,qdtk/openshadinglanguage