void generateMultiple16bitMeshbuffers(int N)
{
Vertex3D[] vertices32bit;
uint[] indices32bit;
generateVerticesAndIndices(N, out vertices32bit, out indices32bit);
List <Vertex3D> verticesChunk = new List <Vertex3D>();
List <ushort> indicesChunk = new List <ushort>();
int totalCubes = N * N * N;
int indicesInCube = indices32bit.Length / totalCubes;
int verticesInCube = vertices32bit.Length / totalCubes;
int maximumVerticesPerChunk = ushort.MaxValue; // must not be more than 0xffff (because we use 16-bit indices)
int verticesIndexOffset = 0;
device.Logger.Log("Batching cubes into 16-bit meshbuffers...");
for (int cubeIndex = 0; cubeIndex < totalCubes; cubeIndex++)
{
// add vertices
for (int i = 0; i < verticesInCube; i++)
{
verticesChunk.Add(vertices32bit[cubeIndex * verticesInCube + i]);
}
// add indices
for (int i = 0; i < indicesInCube; i++)
{
indicesChunk.Add((ushort)(indices32bit[cubeIndex * indicesInCube + i] - verticesIndexOffset));
}
if (verticesChunk.Count + verticesInCube > maximumVerticesPerChunk || // if this chunk is full
cubeIndex == totalCubes - 1) // or this is last cube
{
// we create meshbuffer and add it to the main mesh
MeshBuffer mb = MeshBuffer.Create(VertexType.Standard, IndexType._16Bit);
mb.SetHardwareMappingHint(HardwareMappingHint.Static, HardwareBufferType.VertexAndIndex);
//mb.Append(verticesChunk.ToArray(), indicesChunk.ToArray());
mb.Append(verticesChunk.ToArray(), indicesChunk.ToArray());
mb.RecalculateBoundingBox();
mesh.AddMeshBuffer(mb);
mb.Drop();
// clean up vertex and index chunks
verticesIndexOffset += verticesChunk.Count;
verticesChunk.Clear();
indicesChunk.Clear();
device.Logger.Log(
(((cubeIndex + 1) * 100) / totalCubes) + "%: " +
mesh + ". ~" +
Program.MemUsageText);
GC.Collect();
}
}
}
void generateSingle32BitMeshbuffer(int N)
{
Vertex3D[] vertices32bit;
uint[] indices32bit;
generateVerticesAndIndices(N, out vertices32bit, out indices32bit);
MeshBuffer mb = MeshBuffer.Create(VertexType.Standard, IndexType._32Bit);
mesh.AddMeshBuffer(mb);
mb.Drop();
device.Logger.Log("Appending " +
vertices32bit.Length + " vertices and " +
indices32bit.Length + " indices to 32-bit meshbuffer...");
mb.Append(vertices32bit, indices32bit);
mb.SetHardwareMappingHint(HardwareMappingHint.Static, HardwareBufferType.VertexAndIndex);
}