MB86293 Datasheet, PDF (233/285 Pages) Fujitsu Component Limited. – Grraphiics Conttrrollllerr Speciiffiicattiions

FUJITSU LIMITED
PRELIMINARY and CONFIDENTIAL
GMDR1E (Geometry Mode Register for Line Extension)
Register address (SetGModeRegister)
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 P0
TC
BC UW BM TM
BP SP
BO EP
AA
R/W
W
W
W WWW
WW
WW W
Initial value 0
0
0 000
00
00 0
This register sets the geometry processing extended mode at line drawing.
The CORAL extended function can be used only when the C, Z, and ST fields of GMDR0 are “0”.
This register is sharing hardware with GMDR1, so that if GMDR1E is changed, the same bit of GMDR1
is also changed.
Bit31
P0 (Primitive Order control)
Sets the drawing control mode for the main, the border, and the shadow primitive.
Recommend to set main bit=1 in anti -aliasing and blending.
0 Draws the order of, main->border->shadow(performance is regarded as important)
1 ^{Draws the order of , shadow->border->main(blending affect is regarded as important)}
Bit30
LV (Line Version control)
Specify the Coral line’s algorithm version.
V2.0 is improvement version from V1.0. Recommend V2.0.
0 Version 1.0 ( for backward compatibility )
1 Version 2.0 (Recommended)
Bit 20
TC (Thick line Correct)
Sets the interpolation mode for the bold line joint
0 Interpolation of bold lien joint not performed
1 ^{Interpolation of bold line joint performed (valid for only CORAL line)}
Bit 16
BC (Broken line Correct)
Sets the interpolation mode for the dashed-line pattern
0 Interpolation not performed
1
Interpolation performed using dashed-line pattern reference address fixed mode
(valid for only CORAL line)
Bit 14
UW (Uniform line Width)
Sets the line width equalization mode
0 Equalization of line width not performed
1 Equalization of lien width performed (valid for only CORAL line)
Bit 13
BM (Broken line Mode)
Sets the dashed-line pattern mode
0 Dashed-line pattern pasted vertical to principal axis of line (compatible with
CREMSON) (valid for only CREMSON line)
1 Dashed-line pattern pasted vertical to theoretical line
Bit 12
TM (Thick line Mode)
MB86293 CORAL_LQ
Graphics Controller
233
Specifications Rev. 1.1