MB86296 Datasheet, PDF (144/352 Pages) Fujitsu Component Limited. – PCI Graphics Controller Specification

FUJITSU LIMITED PRELIMINARY AND CONFIDENTIAL
OverlapXYOfft (Format5)
31
24 23
16 15
0
OverlapXYOfft
Command
Reserved
Y Offset
X Offset
The OverlapXYOfft command sets the XY offset of the shade primitive relative to the body
primitive at shading drawing. Shadow shape is same as body.
Command:
Command
ShadowXY
ShadowXYcompsition
Code
0000_0000
0000_0001
Explanation
ShadowXY command sets the XY offset of the shade
primitive relative to the body primitive.
ShadowXYcomposition command sets the XY offset of
the shade synthetic primitive relative to the body
primitive.
It command synthesizes a shade from the relationship
between the XY offset set using ShadowXY and this
XY offset. This command is enabled for only lines.
OverlapZOfft (Format5)
31
24 23
16 15
0
OverlapZOfft
Command
Reserved
don’t care
Z Offset
Note: When MDR0 ZP = 1, only lower 8 bits are enabled.
31
24 23
16 15
0
OverlapZOfft
Packed_ONBS
Reserved
S_Z Offset
B_Z Offset
N_Z Offset
O_Z Offset
The OverlapZOfft command sets the Z offset of the shade primitive relative to the body primitive,
sets the Z-offset of the edge primitive relative to the body primitive, and sets the Z offset of the
interpolation primitive relative to the body primitive, with the top-left rule non-applicable in effect.
At this time, the following relationship must be satisfied when, for example, GREATER is specified
for the Z value comparison mode:
Body primitive > Top-left rule non-applicable interpolation primitive
> Edge primitive > Shade primitive
Command:
Command
Origin
NonTopLeft
Border
Shadow
Packed_ONBS
Code
0000_0000
0000_0001
0000_0010
0000_0011
0000_0111
Explanation
Origin command sets the Z offset of the body primitive.
When drawing one primitive below the other primitive (for
example, when drawing a solid intersection), this Z offset is
changed. When drawing an ordinary intersection, set the
same Z offset as other primitives.
NonTopLeft command sets the Z offset of the interpolation
primitive, with the top-left non- applicable.
Border command sets the Z offset of the edge primitive.
Shadow command sets the Z offset of the shade primitive.
Packed_ONBS command sets the above four types of Z
offsets.
MB86296S<Coral-PA>
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Specification Manual Rev0.1