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TVP4020
Programmers Reference Manual
Graphics Register Reference
197
Name:
Depth Derivative Y Dominant - Upper
Unit:
Stencil/Depth
Region: 0
Offset:
0x0000.89D0
Tag:
0x013A
Reset Value:
Undefined
Read/write
0
8
16
24
31
Not Used
16 bit integer
Sign
This register holds part of the depth derivative per unit in Y used for the dominant edge of
a trapezoid, or along a line. dZdyDomU holds the most significant bits, and dZdyDomL the
least significant bits. The value is in 2's complement 17.11 fixed point format.
Name:
Framebuffer Block Fill Color
Unit:
FramebufferWrite
Region: 0
Offset:
0x0000.8AC8
Tag:
0x0159
Reset Value:
Undefined
Read/write
0
8
16
24
31
32 bit value
Note that this register should not be updated immediately after a Render command which
performs a block write.
Contains the color (and optionally alpha value) to be written to the framebuffer during block
writes. Note the format is the raw data format of the framebuffer.
If the framebuffer is used in 8 bit packed mode, then data should be repeated in all 4 bytes
of the register.
If the framebuffer is in 16 bit packed mode then the data must be repeated in both halves
of the register.
dZdyDomU
FBBlockColor
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 ...