Windows
<<  Введение в Windows Forms Настройка параметров безопасности и обновления Windows  >>
Windows Graphics Overview
Windows Graphics Overview
Session Outline
Session Outline
Windows Graphics in Longhorn
Windows Graphics in Longhorn
Longhorn Display Driver Model
Longhorn Display Driver Model
Stability & Security
Stability & Security
Virtualization
Virtualization
Virtualization
Virtualization
Device Lost and Device Removed
Device Lost and Device Removed
Performance
Performance
Advanced Driver Model
Advanced Driver Model
Legacy APIs
Legacy APIs
Legacy APIs
Legacy APIs
Windows Graphics Foundation 1.0
Windows Graphics Foundation 1.0
Windows Graphics Foundation 1.0
Windows Graphics Foundation 1.0
OpenGL
OpenGL
OpenGL
OpenGL
Desktop Window Manager
Desktop Window Manager
Desktop Window Manager
Desktop Window Manager
Desktop Window Manager
Desktop Window Manager
Full-Screen Exclusive, Multimon, and DWM
Full-Screen Exclusive, Multimon, and DWM
Content Protection
Content Protection
Content Protection
Content Protection
Protected Video Path
Protected Video Path
Protected Video Path Roadmap
Protected Video Path Roadmap
Glitch-Free Media Support
Glitch-Free Media Support
Glitch-Free Media Support
Glitch-Free Media Support
Windows Graphics Foundation 2.0
Windows Graphics Foundation 2.0
Windows Graphics Foundation 2.0
Windows Graphics Foundation 2.0
Windows Graphics Foundation 2.0
Windows Graphics Foundation 2.0
Windows Graphics Foundation 2.0
Windows Graphics Foundation 2.0
Windows Graphics Foundation 2.0
Windows Graphics Foundation 2.0
Call To Action
Call To Action
Community Resources
Community Resources
Additional Resources
Additional Resources

Презентация на тему: «Windows Graphics Overview». Автор: . Файл: «Windows Graphics Overview.ppt». Размер zip-архива: 260 КБ.

Windows Graphics Overview

содержание презентации «Windows Graphics Overview.ppt»
СлайдТекст
1 Windows Graphics Overview

Windows Graphics Overview

David Blythe Architect Windows Graphics & Gaming Technologies dblythe @ microsoft.com Microsoft Corporation

2 Session Outline

Session Outline

Windows Graphics Big Picture Windows codenamed "Longhorn" Display Driver Model Basic, Advanced driver models Graphics APIs Legacy, Direct3D9, Windows Graphics Foundation, OpenGL Desktop Window Manager Content Protection & Protected Video Path Glitch-Free Media Support Windows Graphics Foundation 2.0

3 Windows Graphics in Longhorn

Windows Graphics in Longhorn

Microsoft- written code

IHV-written code

Avalon/DWM

Legacy D3D APIs

DX VA

D3D9

WGF 1.0

WGF 2.0

OpenGL32

OpenGL ICD

Common pipeline

OGL?D3D

User-Mode Driver

DXG Kernel

Kernel-Mode Driver

4 Longhorn Display Driver Model

Longhorn Display Driver Model

Graphics Just Works Fundamental principle New driver model delivers: Stability Security Availability (virtualization) Performance Staged introduction of driver model Basic model supports current hardware (planned for Longhorn) e.g., pre-Longhorn hardware Advanced model utilizes new hardware features (post-Longhorn) More efficient virtualization Old XP driver model still supported for compatibility No new features

5 Stability & Security

Stability & Security

Application graphics state isolated from other applications Surface data (textures, render targets, etc) Virtual address spaces Current rendering state Shaders, etc Command stream is validated Prevents access to unauthorized resources e.g., another application’s surfaces Prevents illegal command streams Avoid sending bad commands to hardware But, still have a watchdog timer Time out if not making forward progress Basic driver model does sw validation in kernel Advanced driver model does hw validation

6 Virtualization

Virtualization

Allow multiple applications to “time slice” the graphics hardware Scheduler determines which command stream to run Basic driver model schedules batches Batch = sequence of commands submitted by application Batch can’t be interrupted once started Advanced driver model schedules contexts Batches accumulated in application context Can interrupt a context and run a different one More responsive to input changes (new work, priority changes) Better user experience

7 Virtualization

Virtualization

Memory manager determines which memory resources need to be resident Unused resources can be paged out Application resources can be larger than video memory In Window Graphics Foundation APIs only No duplication of data Either in graphics memory, system memory, or page file Basic driver model All referenced surfaces must be present for application to run Can fail if too many surfaces (WGF 2.0 can be demanding) Pages for inactive surfaces can be paged out Advanced driver model Only referenced pages need to be resident Can fault pages in on demand More efficient utilization of physical memory

8 Device Lost and Device Removed

Device Lost and Device Removed

Virtualization eliminates “device lost” Eliminate notion of exclusive access to device However, device can be removed Low frequency, but possible Hot-plug “Device hang” followed by reset equivalent to: Removal + insertion Best to not have device hang at all (hint hint) Use to avoid reboot on driver install Remove device, add device with new driver Applications should be written to handle “device removed” events

9 Performance

Performance

New model designed with performance in mind Hardware command streams built directly in user mode New DDIs better match for modern hardware Support for renaming and other pipelining operations Both Basic and Advanced driver models Advanced model enables maximum performance Eliminates CPU processing Validation Handle mapping, patching

10 Advanced Driver Model

Advanced Driver Model

Advanced Driver Model is the Future More responsive scheduling More efficient memory management All future content protection, glitch free, etc. plans build on the Advanced Driver Model

11 Legacy APIs

Legacy APIs

Microsoft- written code

IHV-written code

User Mode

Kernel Mode

Avalon/DWM

Legacy D3D APIs

DX VA

D3D9

WGF 1.0

OpenGL32

WGF 2.0

OpenGL ICD

Common pipeline

OGL?D3D

User-Mode Driver

DXG Kernel

Kernel-Mode Driver

12 Legacy APIs

Legacy APIs

Older Direct3D immediate mode APIs supported D3DRM (retained mode) API retired Map older runtimes onto Direct3D9 DDIs e.g., runtimes ? Direct3D8 Fixed-function onto shaders, etc Direct3D9 interface matches DirectX 9.0c Device removed maps to device lost Memory virtualization “partially hidden” from Direct3D9 Application limited to size of video memory Avoids breaking existing applications Port to WGF 1.0 for full virtualization

13 Windows Graphics Foundation 1.0

Windows Graphics Foundation 1.0

Microsoft- written code

IHV-written code

User Mode

Kernel Mode

Avalon/DWM

Legacy D3D APIs

DX VA

D3D9

WGF 1.0

WGF 2.0

OpenGL32

OpenGL ICD

Common pipeline

OGL?D3D

User-Mode Driver

DXG Kernel

Kernel-Mode Driver

14 Windows Graphics Foundation 1.0

Windows Graphics Foundation 1.0

Enhanced version of Direct3D9 Also known as “DX9.L” Cross-process shared surfaces “Unlimited memory” All memory resources are “managed” Creation fails when run out of pagefile Resource management controls Prioritization of resources Antialiased text rendering support Monochrome texture filter with large kernel size More accurate gamma control Extended, higher resolution gamma tables Still support legacy 256x3 table for GDI No more “device lost”

15 OpenGL

OpenGL

Microsoft- written code

IHV-written code

User Mode

Kernel Mode

Avalon/DWM

Legacy D3D APIs

DX VA

D3D9

WGF 1.0

WGF 2.0

OpenGL32

OpenGL ICD

Common pipeline

OGL?D3D

User-Mode Driver

DXG Kernel

Kernel-Mode Driver

16 OpenGL

OpenGL

Continue OpenGL support Important component of the Windows platform, particularly for high-end workstation applications In-box hardware accelerated version of OpenGL Uses WGF 1.0 as common graphics pipeline Upgraded API support compared to XP OpenGL 1.4 Continue to support OpenGL ICDs Can be shipped by OEMs New ICDs required for LDDM Old XP ICDs work with XP driver model in Longhorn

17 Desktop Window Manager

Desktop Window Manager

New desktop presentation built using Avalon and DirectX Uses new WGF 1.0 interfaces Desktop Window Manager (DWM) Composited desktop Window movement without repainting underlying windows No more dragging garbage Client areas from applications GDI, Direct3D, Windows Graphics Foundation, Avalon Video Non-client areas from the Window Manager Allows different views of application windows

18 Desktop Window Manager

Desktop Window Manager

Supports high-dpi displays Composition with magnification Supports video playback Takes advantage of Direct3D9 shaders For non-client areas, transitions Animated transitions, etc. New WGF 1.0 cross-process shared surfaces Allows DWM to access application back buffers Turns off when certain application types running Overlay planes, front buffer rendering, …

19 Desktop Window Manager

Desktop Window Manager

Avalon Application

WGF/DX Application

GDI Application

surface

surface

surface

Desktop Window Manager

20 Full-Screen Exclusive, Multimon, and DWM

Full-Screen Exclusive, Multimon, and DWM

So, what happens to full-screen exclusive? Replaced with exclusive output control Full-screen application owns the display output Video mode, gamma, etc. Desktop window manager disappears Other applications can continue to run Doesn’t trigger device lost, etc. May bump the priorities of the output-exclusive app Applications should recognize case where client area is occluded Background processing on the GPU Multiple monitors independent Composited desktop image per monitor Exclusive output independent for each monitor

21 Content Protection

Content Protection

Microsoft- written code

IHV-written code

User Mode

Kernel Mode

Avalon/DWM

Legacy D3D APIs

DX VA

D3D9

WGF 1.0

WGF 2.0

OpenGL32

OpenGL ICD

Common pipeline

OGL?D3D

User-Mode Driver

DXG Kernel

Kernel-Mode Driver

22 Content Protection

Content Protection

Preparing the PC for HD-DVD Prevent “high-value” content from escaping Work with content providers on protection rules Two areas of protection While content being processed on CPU While content being transmitted to GPU and processed on GPU Supported by Protected Media Path (PMP) and Protected Video Path (PVP)

23 Protected Video Path

Protected Video Path

Protection requirements Ensure that graphics device is trusted Driver authenticates graphics chip, OS authenticates driver Protect content transmitted to graphics card Special case for data crossing a “user-accessible bus” (UAB) Encrypt content crossing UABs with an approved cipher E.g., AES128 in counter mode Encryption requires initialization using Diffie-Hellman algorithm Protect content transmitted from graphics card to display device Use “standard” output protection mechanisms (HDCP, etc) Control using Output Protection Manager (OPM)

24 Protected Video Path Roadmap

Protected Video Path Roadmap

Non-UAB systems planned for Longhorn: Small set of driver DDIs Driver authentication OPM Updates to DirectX Video Acceleration (DXVA) Authentication of cross-process shared surfaces Basic driver model UAB systems require Advanced driver model Support for paging with encrypted transfers New DDIs Initialization, encrypted transfers, key management, paging

25 Glitch-Free Media Support

Glitch-Free Media Support

Microsoft- written code

IHV-written code

User Mode

Kernel Mode

Avalon/DWM

Legacy D3D APIs

DX VA

D3D9

WGF 1.0

WGF 2.0

OpenGL32

OpenGL ICD

Common pipeline

OGL?D3D

User-Mode Driver

DXG Kernel

Kernel-Mode Driver

26 Glitch-Free Media Support

Glitch-Free Media Support

Multi-faceted plans to address causes of glitches Several graphics-related initiatives Memory, scheduler controls Statistics & feedback Video sync & flip counts with timestamps Method to calibrate GPU timestamps against CPU timestamps Compute current frame being displayed Hardware “flip” buffering Hardware-supported “flip queue” Allow playback to get several frames ahead Provide elasticity to cover unexpected delays Hardware support eliminates all software delays Comes at “modest” increase in latency Comes at a cost in additional memory

27 Windows Graphics Foundation 2.0

Windows Graphics Foundation 2.0

Microsoft- written code

IHV-written code

User Mode

Kernel Mode

Avalon/DWM

Legacy D3D APIs

DX VA

D3D9

WGF 1.0

WGF 2.0

OpenGL32

OpenGL ICD

Common pipeline

OGL?D3D

User-Mode Driver

DXG Kernel

Kernel-Mode Driver

28 Windows Graphics Foundation 2.0

Windows Graphics Foundation 2.0

Next Version of Direct3D Supported in Longhorn Proposed Gold Logo requirement Major improvements in Hardware consistency Clearest, most detailed specification Elimination of capability bits Programmer expressiveness Unified shader programming model More capable shader unit Flexible memory model New pipeline stages LDDM + WGF 2.0 are fundamental improvement to the Windows Gaming Platform

29 Windows Graphics Foundation 2.0

Windows Graphics Foundation 2.0

Performance improvements Applications limited by state change performance LDDM helps by eliminating extra processing WGF 2.0 refactors state for efficient management Enable GPU processing without CPU intervention More flexible memory model Stream output from middle of pipeline Feedback to front of pipeline, with predication Efficiency improvements Multiple samples from textures, integer addressing Compact surface formats (scenario-specific) HDR, normal map compression, … Arrayed resources

30 Windows Graphics Foundation 2.0

Windows Graphics Foundation 2.0

Geometry shader stage “Sees” entire primitive (3 vertices of triangle) Can have adjacent vertices too (6 vertices total) Limited amplification Extrude edges, expand points, generate shells, … Per-primitive processing Generate extra per-primitive constant data for pixel shaders Constant colors, normals, etc Compute plane equations, barycentric parameters, etc. Combine with stream output or arrayed resources Render to cube map Render multiple shadow maps

31 Windows Graphics Foundation 2.0

Windows Graphics Foundation 2.0

fixed

programmable

memory

Constant

Constant

Constant

Input Assembler

Vertex Shader

Geometry Shader

Setup Rasterizer

Pixel Shader

Output Merger

Sampler

Sampler

Stream out

Sampler

Memory

Vertex Buffer

Index Buffer

Texture

Texture

Stream Buffer

Texture

Depth Stencil

Render Target

32 Call To Action

Call To Action

Longhorn Display Driver Basic model for Longhorn launch Future Advanced model Support Windows Graphics Foundation 2.0 Comprehensive hardware spec for next generation content Support Protected Video Path features Output protection management, for Longhorn launch Protected transfers (discrete cards) for validation in 2006 Support Glitch Free features Counters, timestamps, flip queue ASAP Advanced driver model

33 Community Resources

Community Resources

Windows Hardware & Driver Central (WHDC) www.microsoft.com/whdc/default.mspx Technical Communities www.microsoft.com/communities/products/default.mspx Non-Microsoft Community Sites www.microsoft.com/communities/related/default.mspx Microsoft Public Newsgroups www.microsoft.com/communities/newsgroups Technical Chats and Webcasts www.microsoft.com/communities/chats/default.mspx www.microsoft.com/webcasts Microsoft Blogs www.microsoft.com/communities/blogs

34 Additional Resources

Additional Resources

Email directx @ microsoft.com Related Sessions Avalon Technologies “Advances in Display and Composition Architecture for Windows” PMP and PVP “Protected Media Path & Driver Interoperability Requirements” “Longhorn Output Content Protection” WAVE “Windows Audio Video Excellence”

«Windows Graphics Overview»
http://900igr.net/prezentacija/informatika/windows-graphics-overview-126353.html
cсылка на страницу

Windows

30 презентаций о Windows
Урок

Информатика

130 тем
Слайды