If you're interested in what a DMA2D peripheral can do for graphics display in your microcontroller applications... this article from Francis Lamotte explains how it works:
Just for info... a new STM32F429 EvoPrimer is available with demo application featuring the STM32F429 DMA2D peripheral for accelerated handling of graphics. Examples include handling of bitmap econding/decoding, mutiple objects on the display, layering of objects and blending to include ...