1. A method comprising: determining whether an image stored in at least a portion of a system memory that is accessible via a system bus is a static image or a non-static image; retrieving, with a graphics processing unit (GPU), the static image from the portion of the system memory via the system bus when the image is determined to be the static image; scaling, with the GPU, the static image, based on an amount of available storage space in a local memory, to generate a reduced spatial resolution version of the static image; storing, with the GPU and without using the system bus, the reduced spatial resolution version of the static image in the local memory of the GPU that is external to the system memory; retrieving, with a display processor coupled to a display and without using the system bus, the reduced spatial resolution version of the static image from the local memory; rescaling, with the display processor, the reduced spatial resolution version of the static image to generate a rescaled image; outputting, with the display processor, the rescaled image to the display for presentation; and when the image is determined to be the non-static image, retrieving, with the display processor, the non-static image from the portion of the system memory via the system bus for presentation on the display.