Intel 815 manual Small Triangle Filter Enable Mask, Pixelization Rule Mask

Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0

R

DWord Bits Description

031:29 Client : 03h – Rendering Engine

28:24 3DState24 : 07h

23:13 Reserved: 0000h

12 Small Triangle Filter Enable Mask :

1 = Update ; 0 = Do Not Update

11Small Triangle Filter Enable: If Set then Small Triangles i.e triangles which donot cover

any pixels, and are either vertical or horizontal will be filtered out. Note: This should be enabled only in GFXPrimitive Mode when Pixelization Rule is enabled, and the “Horizontal & Vertical Bias” values (in the Dest Buffer Packet) are both the same and programmed to 1000 or 0000.

10Pixelization Rule Mask:

1 = Update ; 0 = Do Not Update

9Pixelization Rule: This bit should be set in GFXPRIMITIVE MODE for following the correct Pixelization Rules.

8Line Strip/List Flat Shaded Vertex Select Mask: 1 = update, 0 = Do Not Update

7:6 Line Strip/List Flat Shaded Vertex Select:

0h = Vertex 0

1h = Vertex 1

2h = Reserved

3h = Reserved

5Triangle Fan Flat Shaded Vertex Select Enable Mask: 1 = update, 0 = Do Not Update

4:3 Triangle Fan Flat Shaded Vertex Select:

0h = Vertex 0

1h = Vertex 1

2h = Vertex 2

3h = Reserved

2Triangle Strip/List Flat Shaded Vertex Select Enable Mask: 1 = update, 0 = Do Not Update

01:0 Triangle Strip/List Flat Shaded Vertex Select:

0h = Vertex 0

1h = Vertex 1

2h = Vertex 2

3h = Reserved

250