switch from GDT_Float32 to GDT_Byte (simpler, fixes gcc warnings)
switch from GDT_Float32 to GDT_Byte (simpler, fixes gcc warnings)

nakijun/vtp,seanisom/vtp,nakijun/vtp,nakijun/vtp,markraz/vtp,markraz/vtp,seanisom/vtp,seanisom/vtp,nakijun/vtp,markraz/vtp,markraz/vtp,markraz/vtp,seanisom/vtp,nakijun/vtp,seanisom/vtp