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Adjacency Data

Started by brekehan Aug 27, 2008 at 11:05 PM 0 replies 850+ views

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Aug 27, 2008 at 11:05 PM

I have seen the word "adjacency" appear both in ID3DX10MESH, and in the D3D10_PRIMITIVE_TOPOLOGY, however in both places it is simply described as "adjacency data". Well, gee that tells me alot. I know what the word adjacent means, but what does this data look like, how is it used?

jollyjeffers

245

jollyjeffers

Aug 28, 2008 at 3:55 AM

From memory it's adjacent faces. In the material buffer you can get an index for each face, and the adjacency buffer has three times this number of indices - for each face it lists the 3 adjacent faces to that triangle.

The D3D9 docs have some information and as far as I'm aware it hasn't changed for D3D10.

hth
Jack

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