Duplicate a D3DXMESH?

[danielkw]

How do I duplicate a D3DXMESH?

First, I load an X file into Mesh1:
Set Mesh1 = D3DX.LoadMeshFromX ...

Then I want Mesh2 to be an exact copy Mesh1. I don't use the
Set Mesh2 = Mesh1
since Mesh2 will only point to Mesh1 and not become and individual copy.

Any suggestions?

[Zaei]

Im thinking that you will have to write a function yourself. It just isnt functionality that is required much...

Z.

[danday1974]

cant you draw the mesh, transform it then draw it again or am I getting the wrong idea here?

[Zaei]

That is what most people would do.

Z.

[danielkw]

No, that's what I am doing right now. Drawing, transforming, drawing new etc...

The problem is that, with this method, I have to apply the transformation every time I draw the mesh since it may have been altered in the previous loop. So if I had one instance of the mesh per object that I want to draw, then I would only have to apply transformations when needed, not on every frame.

Is this understandable? I'm not too good at explaining things in english *lol* =)

[Zaei]

Performance says that changing your matrices will be FAR faster then changing your mesh.

Consider. Setting a world matrix involves copying 16 Single values into an internal Matrix. Setting a mesh involves change a Vertex buffer, Copying 4*Len(Vertex)*numVerts, and an index buffer, which is indexSize*numIndices.

Besides, that is what matrices are for, so you dont have to duplicate geometry.

Z.

[danielkw]

Okedoki! Thanx for your answer! Sounds clever to me! I will try that as soon as I get time...