MB86296 Datasheet, PDF (310/352 Pages) Fujitsu Component Limited. – PCI Graphics Controller Specification

FUJITSU LIMITED PRELIMINARY AND CONFIDENTIAL
GMDR2 (Geometry Mode Register for Triangle)
Register
address
GeometryBaseAddress + 48H
Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit field name
FD CF
R/W
Initial value
WW
00
This register sets the geometry processing mode when a triangle is drawn.
Drawing performed using commands in range from G_Begin to G_End
Bit 2
FD (Face Definition)
Sets the face definition
0 Face defined as state with vertexes arranged clockwise
1 Face defined as state with vertexes arranged counterclockwise
Bit 0
CF (Cull Face)
Sets the drawing mode of the back
0 Back drawn
1 Back not drawn (value disabled for polygons)
MB86296S<Coral-PA>
300
Specification Manual Rev0.1