Performance Enhancements Set Pixel Zoom to 1.0 Disable Fragment operations (Chapter 10) Disable T&L Reduce the amount of data conversion to/from the framebuffer Unsigned image formats may be faster than unsigned  Large pixel rectangle operations are generally faster than several small operations Reduce the amount of data to transfer (use GL_UNSIGNED_BYTE if possible) Pixel transfer operations (scale/bias, offset) do have a performance cost - use only if necessary

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