private void DrawHardwareInstancing(Matrix[] matrix, int vertexCount, int primitiveCount)
{
const int sizeofMatrix = sizeof(float) * 16;
int instanceDataSize = sizeofMatrix * matrix.Length;
DynamicVertexBuffer instanceDataStream = new DynamicVertexBuffer(game.GraphicsDevice,
instanceDataSize,
BufferUsage.WriteOnly);
instanceDataStream.SetData(matrix, 0, matrix.Length, SetDataOptions.Discard);
VertexStreamCollection vertices = game.GraphicsDevice.Vertices;
vertices[0].SetFrequencyOfIndexData(matrix.Length);
vertices[1].SetSource(instanceDataStream, 0, sizeofMatrix);
vertices[1].SetFrequencyOfInstanceData(1);
game.GraphicsDevice.DrawIndexedPrimitives(PrimitiveType.TriangleList,
0, 0, vertexCount, 0, primitiveCount);
vertices[0].SetSource(null, 0, 0);
vertices[1].SetSource(null, 0, 0);
}
public void SetUp()
{
vsc = game.GraphicsDeviceManager.GraphicsDevice.Vertices;
}
