[2/5] d3dx9: Implement D3DXMESHOPT_COMPACT for ID3DXMesh::OptimizeInplace.

[Matteo Bruni]

2011/5/6 Dylan Smith <dylan.ah.smith at gmail.com>:

...
> +        new_vertex_buffer_size = This->numvertices;
...
> +        new_vertex_buffer_size *= vertex_size;
> +        hr = IDirect3DDevice9_CreateVertexBuffer(This->device, new_vertex_buffer_size,
> +                vertex_desc.Usage, This->fvf, vertex_desc.Pool, &vertex_buffer, NULL);
...
+        for (i = 0; i < new_num_vertices; i++)
+            CopyMemory(new_vertices + i * vertex_size, orig_vertices
+ vertex_remap_ptr[i] * vertex_size, vertex_size);

Is this correct, i.e. should the new vertex buffer be big as much as
the old one? I expected it to be just big enough to keep all the
remaining vertices (new_num_vertices). Maybe this is so to match some
native behavior?