Intel 815 Manuel D’Utilisation
Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0
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13.28. GFXRENDERSTATE_DEST_BUFFER_VARIABLES
The GFXRENDERSTATE_DEST_BUFFER_VARIABLES instruction is used to specify the
information about the destination buffer. This information is used to initialize rendering hardware
parameters. The destination buffer contains the pixel color data for the scene being rasterized by the 3D
Rendering Engine. This is a non-pipelined state variable. Two examples of how the Origin BIAS works
are shown below.
information about the destination buffer. This information is used to initialize rendering hardware
parameters. The destination buffer contains the pixel color data for the scene being rasterized by the 3D
Rendering Engine. This is a non-pipelined state variable. Two examples of how the Origin BIAS works
are shown below.
0,0
Origin Bias (0.0, 0.0)
x
y
(0.0,0.0)
(1.0,1.25)
(1.75,0.25)
Sample Point
0,0
Origin Bias (0.5, 0.5)
x
y
(0.0,0.0)
(1.0,1.25)
(1.75,0.25)
Sample Point
origin.vsd
The format is:
DWord Bit
Description
0 31:29
Client : 03h – Rendering Engine
28:24
3DStateMWNP (Non-pipelined) : 1Dh
23:16
Opcode : 85h
15:0
DWORD_LENGTH : 0