1. A method of multi-stage pipeline graphics processing, comprising: receiving a plurality of graphics processing tasks; determining respective contexts for each task, wherein each context is for a different application; performing, by a computer, a first graphics processing operation for each of said contexts using a first portion of a graphics memory, wherein the first portion of graphics memory is shared by each said first graphics processing operation for each of said contexts; and performing a second graphics processing operation on results of said performing a first graphics processing operation, wherein said performing a second graphics processing operation occurs using a different portion of said graphics memory for each context, wherein each different portion of said graphics memory for each context is separate from the first portion of graphics memory, and wherein each different portion of said graphics memory for each context is not shared memory while performing the respective second graphics processing operation.