Computer systems and methods may provide a projection display as a primary visual output. In particular, a computer system may include an integrated projector output. Such a computer system may be substantially or even entirely externally wire-free. Methods of image processing may involve a computer system with an integrated projector output. Such methods may involve using raw presentation data for image processing, including adjustment and/or correction for brightness, color and/or geometry artifacts generated from aspects of the projection surface (such as geometry, texture, color or the like), the surroundings (such as ambient light), the relation of the computer system (or integrated projector output) to the projection surface (such as distance, orientation or the like), and/or the relation of a user/viewer to the projection surface (such as viewing angle, distance or the like).