
FUJITSU LIMITED
PRELIMINARY and CONFIDENTIAL
MB86277 MINT
Graphics Controller
78
Specifications Rev. 1.0
Ys
Y coordinates start position of long edge in drawing triangle
Xs
X coordinates start position of long edge corresponding to Ys
XUs
X coordinates start position of upper edge
XLs
X coordinates start position of lower edge
Zs
Z coordinates start position of long edge corresponding to Ys
Rs
R color value of long edge corresponding to Ys
Gs
G color value of long edge corresponding to Ys
Bs
B color value of long edge corresponding to Ys
Ss
S coordinate of textures of long edge corresponding to Ys
Ts
T coordinate of textures of long edge corresponding to Ys
Qs
Q perspective correction value of texture of long edge corresponding to Ys
dXdy
X DDA value of long edge direction
dXUdy
X DDA value of upper edge direction
dXLdy
X DDA value of lower edge direction
dZdy
Z DDA value of long edge direction
dRdy
R DDA value of long edge direction
dGdy
G DDA value of long edge direction
dBdy
B DDA value of long edge direction
dSdy
S DDA value of long edge direction
dTdy
T DDA value of long edge direction
dQdy
Q DDA value of long edge direction
USN
Count of spans of upper triangle
LSN
Count of spans of lower triangle
dZdx
Z DDA value of horizontal direction
dRdx
R DDA value of horizontal direction
dGdx
G DDA value of horizontal direction
dBdx
B DDA value of horizontal direction
dSdx
S DDA value of horizontal direction
dTdx
T DDA value of horizontal direction
dQdx
Q DDA value of horizontal direction
·
8.2.4
Anti-aliasing function
MINT GDC performs anti-aliasing to make jaggies less noticeable and smooth on line edges.
To use this
function at the edges of primitives, redraw the primitive edges with anti-alias lines.
·
(The edge of line is blended with a frame buffer color at that time. Ideally please
draw sequentially from father object.)