Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0

R

DWord

Bit

Description

031:29 Client : 03h – Rendering Engine

28:24

3DState16 : 1Ch

23:19

Opcode : 1h

 

 

18:17

Reserved: 00h (Additional Coordinate Sets)

 

 

16

Update Coordinate Set Index : The valid range is 0–1.

 

 

15

Normalized Coordinate Set Mask : 0 = Do not update; 1 = Update

14Normalized Coordinate Set :

0 = Coordinates are not normalized.

1 = Coordinates are normalized.

13:12 Reserved: 00h

11:8 Reserved: 00h (3 Dimensional Coordinates)

7 Address V State Variable Mask : 0 = Do not update; 1 = Update

6 Reserved: 00h

5:4 Address V : Valid values are : 0h = Wrap

1h = Mirror

2h = Clamp

3h = Wrap Shortest

3 Address U State Variable Mask : 0 = Do not update; 1 = Update

2 Reserved: 00h

1:0 Address U : Valid values are : 0h = Wrap

1h = Mirror

2h = Clamp

3h = Wrap Shortest

216

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Image 216
Intel 815 manual Opcode 1h, Update Coordinate Set Index The valid range is, Normalized Coordinate Set