Graphics Register Reference
TVP4020
Programmers Reference Manual
166
Name:
Area Stipple Mode
Unit:
Scissor/Stipple
Region: 0
Offset:
0x0000.81A0
Tag:
0x0034
Reset Value:
Undefined
Read/write
0
8
16
24
31
Reserved
Enable Unit
Not used
Invert Stipple Pattern
Reserved
MirrorX
MirrorY
ForceBackgroundColor
XOffset
YOffset
Not used
Controls Area Stippling. Both the AreaStippleEnable bit in the Render command and the
enable in the AreaStippleMode register must be set to enable the area stipple test.
Bit0
Unit Enable
0 = Disable
1 = Enable
Bit7-9
XOffset
Bit12-14
YOffset
Bit17
Invert Stipple Pattern
0 = No Invert
1 = Invert
Bit18
Mirror X
0 = No Mirror in X
1 = Mirror stipple pattern in X direction
Bit19
Mirror Y
0 = No Mirror in Y
1 = Mirror stipple pattern in Y direction
Bit20
ForceBackgroundColor. Controls operation of the stipple test. If disabled
any fragment failing the test is discarded. If enabled any fragment failing
the test is drawn (other tests allowing) but the color is taken from the
Texel0 register. Used to support foreground and background colors.
0 = Disable
1 = Enable
AreaStippleMode
Summary of Contents for TVP4020 PERMEDIA 2
Page 1: ...Texas Instruments TVP4020 PERMEDIA 2 Programmer s Reference Manual Issue 4 ...
Page 284: ...TVP4020 Programmers Reference Manual A Gouraud Shaded Triangle 275 ...
Page 292: ...TVP4020 Programmers Reference Manual Register Tables 283 ...
Page 314: ...TVP4020 Programmers Reference Manual Index 305 ...
Page 315: ...Index TVP4020 Programmers Reference Manual 306 Index ...
Page 323: ...Index TVP4020 Programmers Reference Manual 314 ...