// Find index buffer with its position (for a given model, it has to be the same as its vertex buffer position)
public NVRIndexBuffer GetIndexBuffer(int position)
{
if (IndexBuffers.Count > position)
{
return(IndexBuffers[position]);
}
else
{
NVRIndexBuffer newBuffer = new NVRIndexBuffer(D3DFORMAT.D3DFMT_INDEX16);
IndexBuffers.Add(newBuffer);
return(newBuffer);
}
}
// Generate buffers for writing
private NVRBuffers GenerateBuffers()
{
NVRBuffers buffers = new NVRBuffers();
// Material buffer
foreach (NVRMesh mesh in Meshes)
{
if (!buffers.Materials.Contains(mesh.Material))
{
buffers.Materials.Add(mesh.Material);
}
}
// Creating complex buffers first
foreach (NVRMesh mesh in Meshes)
{
NVRDrawIndexedPrimitive complexMesh = mesh.IndexedPrimitives[0];
NVRVertexType type = complexMesh.Vertices[0].GetVertexType();
NVRVertexBuffer vertBuffer = buffers.GetVertexBuffer(complexMesh.Vertices.Count, type);
int bufferIndex = buffers.VertexBuffers.IndexOf(vertBuffer);
NVRIndexBuffer indBuffer = buffers.GetIndexBuffer(bufferIndex);
complexMesh.IndexBuffer = bufferIndex;
complexMesh.VertexBuffer = bufferIndex;
complexMesh.FirstVertex = vertBuffer.Vertices.Count;
complexMesh.FirstIndex = indBuffer.Indices.Count;
complexMesh.IndexCount = complexMesh.Indices.Count;
complexMesh.VertexCount = complexMesh.Vertices.Count;
vertBuffer.Vertices.AddRange(complexMesh.Vertices);
int indBufferMax = indBuffer.CurrentMax + 1;
foreach (int index in complexMesh.Indices)
{
indBuffer.AddIndex(index + indBufferMax);
}
}
// Then do simple ones
foreach (NVRMesh mesh in Meshes)
{
NVRDrawIndexedPrimitive simpleMesh = mesh.IndexedPrimitives[1];
NVRVertexType type = simpleMesh.Vertices[0].GetVertexType();
NVRVertexBuffer vertBuffer = buffers.GetVertexBuffer(simpleMesh.Vertices.Count, type);
int bufferIndex = buffers.VertexBuffers.IndexOf(vertBuffer);
NVRIndexBuffer indBuffer = buffers.GetIndexBuffer(bufferIndex);
simpleMesh.IndexBuffer = bufferIndex;
simpleMesh.VertexBuffer = bufferIndex;
simpleMesh.FirstVertex = vertBuffer.Vertices.Count;
simpleMesh.FirstIndex = indBuffer.Indices.Count;
simpleMesh.IndexCount = simpleMesh.Indices.Count;
simpleMesh.VertexCount = simpleMesh.Vertices.Count;
vertBuffer.Vertices.AddRange(simpleMesh.Vertices);
int indBufferMax = indBuffer.CurrentMax + 1;
foreach (int index in simpleMesh.Indices)
{
indBuffer.AddIndex(index + indBufferMax);
}
}
NVRNode parentNode = this.CreateRootNode();
// Making mesh buffer
buffers.GenerateMeshBuffer(parentNode);
foreach (NVRMesh mesh in buffers.Meshes)
{
mesh.MaterialIndex = buffers.Materials.IndexOf(mesh.Material);
}
// Making node buffer
buffers.Nodes.Add(parentNode);
buffers.GenerateNodeBuffer(parentNode);
foreach (NVRNode node in buffers.Nodes)
{
if (node.Children.Count > 0)
{
node.FirstChildNode = buffers.Nodes.IndexOf(node.Children[0]);
}
else
{
node.FirstChildNode = -1;
}
}
return(buffers);
}