private void CreateVertexBuffer(List <MyRenderBatchPart> batchParts, int vbSize)
{
if (m_vertexBuffer == null || m_vertexBuffer.Description.SizeInBytes < vbSize)
{
if (m_vertexBuffer != null)
{
m_vertexBuffer.Dispose();
}
m_vertexBuffer = new VertexBuffer(MyRender.GraphicsDevice, vbSize, Usage.WriteOnly, VertexFormat.None, Pool.Default);
}
// Transform and copy vertices
int vbOffset = 0;
for (int i = 0; i < batchParts.Count; i++)
{
var part = batchParts[i];
var model = MyRenderModels.GetModel(part.Model);
var matrix = part.ModelMatrix;
var modelVb = model.VertexBuffer.Lock(0, model.GetVBSize, LockFlags.ReadOnly);
var compoundVb = m_vertexBuffer.Lock(vbOffset, model.GetVBSize, LockFlags.None);
for (int v = 0; v < model.GetVerticesCount(); v++)
{
var vertexPos = v * model.GetVertexStride();
modelVb.Seek(vertexPos, System.IO.SeekOrigin.Begin);
var position = modelVb.Read <HalfVector4>();
Vector3D pos = (Vector3D)VF_Packer.UnpackPosition(ref position);
var transformedPos = Vector3D.Transform(pos, matrix);
m_localAABB = m_localAABB.Include(ref transformedPos);
var transformedPos2 = (Vector3)transformedPos;
compoundVb.Write <HalfVector4>(VF_Packer.PackPosition(ref transformedPos2)); // Transform and copy position
compoundVb.WriteRange(modelVb.PositionPointer, model.GetVertexStride() - (modelVb.Position - vertexPos)); // Copy rest
}
m_vertexBuffer.Unlock();
model.VertexBuffer.Unlock();
vbOffset += model.GetVBSize;
}
BoundingSphereD.CreateFromBoundingBox(ref m_localAABB, out m_localVolume);
m_localVolumeOffset = m_localVolume.Center;
SetDirty();
}
public Vector3 GetVertexInt(int vertexIndex)
{
return(VF_Packer.UnpackPosition(ref m_vertices[vertexIndex].Position));
}