Intel 815 Manuel D’Utilisation
Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0
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13.23. GFXRENDERSTATE_SCISSOR_ENABLE
Only inclusive mode scissoring is supported.
Pixel Aligned
Drawing W indow
Pixel Aligned
Clipping Rectangle
Clipping Rectangle
Span Aligned Reference
Point Defined by the Back
Buffer Info Packet
Point Defined by the Back
Buffer Info Packet
“Inclusive”
Cli
Cli
i
Draw n 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)
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