VR (I) ATW ASW

ATW Track the user's head movements while rendering the picture , And second project the last complete picture onto the viewpoint corresponding to the last head position of the user . This can ensure that when the system cannot complete the rendering of a new complete picture in time , The latest picture is still displayed in the head display .

Oculus Rift Used in head display ATW Technology has been proved to be effective in reducing latency and providing users with more comfortable VR Experience , But there are still some limitations . In particular, it can only compensate for the rendered scene caused by head movement , It cannot compensate for the actions that occur in the rendered scene . Moving objects are only re rendered in their last location , This will significantly reduce the quality of experience to a certain extent .

AMD Asynchronous space warps have been announced （ASW） Support for ,ASW By Oculus Proposed to complement ATW And strengthen the effect of Technology .ASW Detect the previous action information through the previously rendered picture , And use this information to predict the position of scene elements in the next frame . This technology can make the secondary projection picture more accurate after being completely rendered .

ASW The necessary motion detection requires a huge amount of computation , And it must be completed within a few milliseconds before the next frame is presented . Latest version LiquidVR Provides connectivity to powerful VR Graphics processing hardware （AMD Radeon GPU） The interface of , They can generate the necessary motion vectors without overburdening the graphics engine .