Intel announces PixelSync and InstantAccess for upcoming HD Graphics platforms
At GDC 2013 Intel announced two new DirectX extensions which aim to help game developers take advantage of Haswell’s upcoming GPUs. The first of the new extensions is called PixelSync and it allows developers greater opportunities when dealing with transparencies. Smoke, hair, leaves and windows are just a few of the examples Intel used as complex transparent geometries set to benefit from PixelSync. The Santa Clara engineers claim this is achieved by eliminating the need for sorting operations.
The second new real-time rendering extension is called InstantAccess and allows physical memory to be accessed or read by both the CPU and the GPU. While this may sound obvious, it was not the case up until now. Instead what happened was the CPU or GPU would have to make a copy of whatever information both processors needed.
Intel also announced that its hardware-accelerated Quick Sync Video is being adopted by the HandBrake team. Testing is still in early stages, but the open-source team claims especially reduced CPU usage in mobile and low-power processors.