GDEBUG levels:

Level   Description
-----   ------------------------------------------------
 80     init routines
 81     gu3df*
 82	grLfb*
 83	grSst*
 84	grSstStatus, grSstIsBusy, grSstVideoLine
 85	gr* misc state routines
 86	grBuffer*
 87	grDisableAllEffects, grGlide?etState
 88	grTex* attribute routines
 89	grTex* download routines
 90	grDrawPoint
 91	grDrawLine
 92	grDrawTriangle
 93	grDrawPolygon*
 94	grDrawAAPoint
 95	grDrawAALine
 96	grDrawAATriangle
 97	grDrawAAPolygon*
 98	guMP* routines
 99	gu* misc. routines
280	internal init routines
281	routine exit traces
282     dataList values

GLIDE_PLATFORM: 

        GLIDE_HARDWARE:
                Defined if GLIDE should use the actual SST hardware.

        GLIDE_HW_*:
        GLIDE_HW_SST1:
                This macro is for compiling 
        GLIDE_HW_SST96:
                This macro is for compiling Glide for SST96
        GLIDE_HW_H3:
                This macro is for compiling Glide for H3

