▲ Vice President Sungboem Park, a mobile processor design expert who oversees GPU development
In line with this, Samsung collaborated with AMD to develop a power efficient, console-level GPU for mobile devices. AMD’s GPUs are designed specifically for PCs or consoles, meaning they had to be redesigned to fit the mobile environment. Specifically, it was redesigned to accommodate the memory bandwidth of mobile, which is relatively limited, in addition to managing heat dissipation. “Based on our rich knowledge of low-power design, acquired from developing mobile SoCs, we were able to successfully achieve power efficiency and miniaturization in the first-generation product,” said Vice President Sungboem Park, a mobile processor design expert who oversees GPU development. “We focused heavily on minimizing heat, because mobile devices do not have fans like gaming consoles, while also maintaining performance so that the frames do not lag.”
The main role of the GPU in Exynos is to display objects in a 3D virtual space on a 2D smartphone screen, a role that is especially important when playing graphically demanding games on mobile devices. In particular, the Xclipse 920 is the first mobile GPU to support hardware-accelerated ray tracing (RT). Ray tracing is a technology which produces realistic lighting effects by simulating light rays reflected from 3D objects. By being accelerated by hardware rather than software, Xclipse 920 is able to perform real-time computations faster. In addition, variable rate shading (VRS) technology adjusts the amount of GPU computation depending on changes in color, shade, movement and other variables of the objects on screen to reduce GPU overload.