An image you have to draw to, or return that nothing has changed. The location of this image is given before-hand by onResized. recomputeDirtyAreas() MUST have been called before. The pixel format cannot change over the lifetime of the window.
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An image you have to draw to, or return that nothing has changed. The location of this image is given before-hand by onResized. recomputeDirtyAreas() MUST have been called before. The pixel format cannot change over the lifetime of the window.