Intel 815 manual Gfxrenderstatescissorenable, 3DState16NP Non-pipelined 1Ch, Opcode 10h

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Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0

R

13.23.GFXRENDERSTATE_SCISSOR_ENABLE

Only inclusive mode scissoring is supported.

 

 

Pixel Aligned

Span Aligned Reference

“Inclusive”

Clipping Rectangle

Point Defined by the Back

Cli i

 

Buffer Info Packet

 

 

Pixel Aligned

Drawing W indow

Drawn Region

DWord

Bit

Description

 

 

 

0

31:29

Client : 03h – Rendering Engine

 

 

 

 

28:24

3DState16NP (Non-pipelined) : 1Ch

 

 

 

 

23:19

Opcode : 10h

 

 

 

 

18:17

Reserved: 00h (For Future Additional Scissor Rectangles)

 

 

 

 

16

Scissor Rectangle ID : This number must be 0 for this stepping since only one

 

 

clipping rectangle is allowed. (More clipping rectangles can be allowed in future

 

 

expansion)

 

 

 

 

15:2

Reserved: 00h

 

 

 

 

1

Scissor Rectangle Enable Mask : 1 = Update; 0 = Do Not Update

 

 

 

0

0

Scissor Rectangle Enable : 0 = Disable (default), 1 = Enable

 

 

 

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Page 245
Image 245
Intel 815 manual Gfxrenderstatescissorenable, 3DState16NP Non-pipelined 1Ch, Opcode 10h