Abstract: Methods and associated systems that allow a plurality of real-time multimedia applications to operate concurrently within a computer system with constrained primary memory. In particular, the methods and systems of the present invention allow for a plurality of real-time multimedia applications to operate concurrently while adapting to changing memory constraints imposed by the dynamic allocation and release of primary memory in a shared primary memory space.

Abstract: Methods and associated systems for improving the visual quality of real-time interactive multimedia presentations, by blending 2-D image data derived from a plurality of 3-D scene views associated with one or more 3-D scenes in accordance with presentation data modifiable by user input in real-time. The 2-D image data rendered from the perspective of the individual scene views are blended together using an associated blend mode in a back to front order producing a 2-D composite image for projection on a display device to a user of the real-time interactive multimedia presentation.