- added a ArgumentNullException to EffectParameter in DirectX 10 RenderSystem (was a unhandled exception) - fixed a issue in SpriteBatch when no draw call was made between begin and end calls (unhandled exception)
- added a ArgumentNullException to EffectParameter in DirectX 10 RenderSystem (was a unhandled exception) - fixed a issue in SpriteBatch when no draw call was made between begin and end calls (unhandled exception)