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Graphics Register Reference
TVP4020
Programmers Reference Manual
164
Bit8-11
Color Format:
Internal Color Channel
Format
Color Order
Name
R
G
B
A
0
BGR
8:8:8:8
8@0
8@8
8@16
8@24
1
BGR
5:5:5:1 Front
5@0
5@5
5@10
1@15
2
BGR
4:4:4:4
4@0
4@4
4@8
4@12
5
BGR
3:3:2 Front
3@0
3@3
2@6
0
6
BGR
3:3:2 Back
3@8
3@11
2@14
0
9
BGR
2:3:2:1 Front
2@0
3@2
2@5
1@7
10
BGR
2:3:2:1 Back
2@8
3@10
2@13
1@15
11
BGR
2:3:2 FrontOff
2@0
3@2
2@5
0
12
BGR
2:3:2 BackOff
2@8
3@10
2@13
0
13
BGR
5:5:5:1 Back
5@16
5@21
5@26
1@31
14
BGR
CI8
8@0
0
0
0
16
BGR
5:6:5 Front
5@0
6@5
5@11
0
17
BGR
5:6:5 Back
5@16
6@21
5@27
0
0
RGB
8:8:8:8
8@16
8@8
8@0
8@24
1
RGB
5:5:5:1 Front
5@10
5@5
5@0
1@15
2
RGB
4:4:4:4
4@8
4@4
4@0
4@12
5
RGB
3:3:2 Front
3@5
3@2
2@0
0
6
RGB
3:3:2 Back
3@13
3@10
2@8
0
9
RGB
2:3:2:1 Front
2@5
3@2
2@0
1@7
10
RGB
2:3:2:1 Back
2@13
3@10
2@8
1@15
11
RGB
2:3:2 FrontOff
2@5
3@2
2@0
0
12
RGB
2:3:2 BackOff
2@13
3@10
2@8
0
13
RGB
5:5:5:1 Back
5@26
5@21
5@16
1@31
14
RGB
CI8
8@0
0
0
0
16
RGB
5:6:5 Front
5@11
6@5
5@0
0
17
RGB
5:6:5 Back
5@27
6@21
5@16
0
Notes: The format column is also dependent on bit16. n@m means n bits starting at bit m.
Front and Back modes replicate the color value to assist with double buffering. CI values
are replicated into each byte to assist with double buffering. Offset modes have 64 added
to the 7 bit formatted value. If the format has no alpha bits, the alpha field defaults to 0xF8
Bit12
NoAlphaBuffer
0 = Alpha buffer present
1 = No alpha buffer present
Bit13
ColorOrder:
0 = BGR
1 = RGB
Bit14
BlendType:
0 = RGB
1 = Ramp
Bit16
Color Format Extension. Most significant bit extension to Color Format
held in bits8-11.
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 ...