Select Shading > Hardware Texturing > 
(from the Panel menus) to open the Hardware Texture Display Options window.
- Texture Filter
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Select a texture filter for your hardware texture display when you are in High Quality Rendering mode. Select a filter from the drop-down list.
- High Quality Filtering
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When high quality filtering is turned on, the scene views are filtered in high quality by the hardware renderer. This lets you see a very good representation of the look of the final render.