SVGA3dVertexBuffer
SVGA3dVertexBuffer *vbs = (SVGA3dVertexBuffer *) &cbs->bind_cmd_buffer;
set_vb_size = cbs->bind_cmd_count*sizeof(SVGA3dVertexBuffer);
BUILD_BUG_ON(SVGA3D_DX_MAX_VERTEXBUFFERS*sizeof(SVGA3dVertexBuffer) >
SVGA3dVertexBuffer buf[];
sizeof(SVGA3dVertexBuffer);