Creating/Editing a mesh's Attribute Table

[Equis1]

Hello,

 

I am loading mesh information from a file format other than .X. I have created the vertex and index buffers successfully but I would also like to create subsets for texturing. I have tried a couple routes, originally getting the GraphicsStream by locking the Attribute Buffer and writing to it, which always crashed at run time. Obviously I wasn't writing to the stream properly.

 

The second method -

 

int faceStart = 0;

int vertexStart = 0;

AttributeRange[] test = new AttributeRange[importer.mesh.PolygonList.Count];

GraphicsStream attributeStream = mesh.LockAttributeBuffer(LockFlags.None);

for (int i = 0; i < importer.mesh.PolygonList.Count; i++)

{

IMDPolygon currentPoly = ((IMDPolygon)importer.mesh.PolygonList);

//Loop through all IMDMeshes

//Note that these should probably be divided into a Dx Subset

test.AttributeId = i;

test.FaceCount = currentPoly.TriangleList.Count;

test.FaceStart = faceStart;

test.VertexCount = currentPoly.VertexList.Count;

test.VertexStart = vertexStart;

faceStart += currentPoly.TriangleList.Count;

vertexStart += currentPoly.VertexList.Count;

}

mesh.UnlockAttributeBuffer();

mesh.SetAttributeTable(test);

 

The examples I see in C++ (few and far between) simply lock the AttributeStream which returns a DWORD pointer which they then set for each indice.