private void InternalBegin(BlendState blendState, ref Matrix matrix)
{
if (inBatch || disposed)
{
throw new InvalidOperationException("SpriteBatch is in incorrect state");
}
inBatch = true;
// Set up OpenGL projection matrix (client to projection)
device.SetupClientProjection();
// Set up user matrix (world to client)
GL.MatrixMode(All.Modelview);
GL.LoadMatrix(ref matrix.M11); // would you believe that this is legal?
// Initialize OpenGL states
GL.Disable(All.DepthTest);
GL.TexEnv(All.TextureEnv, All.TextureEnvMode, (int)All.BlendSrc);
GL.EnableClientState(All.VertexArray);
blendState.Apply();
lastTexture = null;
}
