Windows Display Driver Model (WDDM) v2 And Beyond.ppt

Outline Introduction Trends in use of GPU(s) WDDM v1.0 overview WDDM v.2.x overview Scenarios that benefit Trends In Use Of GPU Windows XP: Single client at a time GDI desktop Video decoding Full screen game CAD/Workstation applications GPUs getting more flexible Direct3D pushing increased programmability, precision and performance Massive processing power, not fully utilized today Trends In Use Of GPU Windows Vista: Multiple clients together Desktop window manager WinFX APIs based on Direct3D 9 Picture, video playback, capture, encode, transcode, edit leverage GPUs In-box games Emerging General – Purpose-GPU trend Physics, image processing, etc. WDDM v1.0 Designed to work on existing GPUs Increase stability, robustness and security GPU scheduling Virtualized video memory Resource virtualization seamless across legacy API Ddraw, dx3, dx5, dx6, dx7, dx8, dx9, OGL Use new API to take full advantage of resource virtualization Direct3D 9Ex, Direct3D 10 WDDM v2.0 New generation of GPUs designed for multi-tasking Mid command buffer preemption Demand faulting of resources Surface fault (preferred mode for v2.0) Page fault (stall the GPU) Per process page tables Better multi-tasking than WDDM v1.0,still some client cooperation required WDDM v2.1 Everything WDDM v2.0 GPU can do Fine grained context switching Can preempt mid pixel Doesn’t stall GPU on page fault True preemptive multi-tasking Ultimate flexibility for the GPU GPU can be used for any scenarios without impact on the desktop WDDM Cheat Sheet WDDM 2.x Scheduling, Performance AndMulti-GPU Support Henry MoretonNVIDIA GPUs On The Desktop The power of the GPU is finally tapped Graphics Video Bandwidth and floating point (GPGPU) Applications are vying for this powerful resource The Vista Desktop Window Manager (DWM) Photo editing Video feeds Personal Video Recorder GPU Management Is Crucial Applications naturally see the processor as their own Great GPU tasks really exploit the power But... Some GPU operati