User's Manual

Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0
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13.2. GFXRENDERSTATE_VERTEX_FORMAT
Flexible Vertex Format Packet
DWord Bit Description
0 31:29 Client : 03h – Render Processor
28:24 3DState24 : 05h
23:12 Reserved : 00h
11:8 Texture Coordinate Count: This field identifies how many coordinates are present in
the vertex. The valid range is 0–2.
7 Specular Color and Fog Factor Present
6 Diffuse Color and Alpha Present
5 Z-Offset Present
4 Reserved: 00h (DX6 Normal Vector Present Bit)
3:1 Position Mask:
0h = Invalid
1h = XYZ Present, RHW not present
2h = XYZRHW Present
3h = XY Present, RHW and Z not present
4h = XYRHW Present, Z not present
5h–7h = Reserved
0 Reserved: 00h