GS-4112, Mantle: Empowering 3D Graphics Innovation, by Guennadi Riguer and Brian Bennett

MANTLE: EMPOWERING 3D GRAPHICS INNOVATION

GUENNADI RIGUER – MANTLE CHIEF ARCHITECT BRIAN BENNETT – MANTLE ARCHITECT

2 | MANTLE: EMPOWERING 3D GRAPHICS INNOVATION | NOVEMBER 19, 2013 | CONFIDENTIAL

What Is Mantle? Mantle is innovation

Just the right abstraction level

Feature set for modern GPUs


Why Mantle? Developers want it

Performance and control

Excitement and innovation


Mantle isn’t for Everyone Do you care about performance?

Do you want control?

Do you care about bridging multiple platforms?


Solutions for Performance Designed for GPU efficiency

Unlocking new performance features

“Small batch” problem is history


“Small batch” Today

3-5K


Amazing Developers

3-5K 10K


Mantle Target

10K

100K


Current Issues API overhead

Lack of proper threading

Memory management

Lack of direct GPU control


Design Philosophy

Simplicity Features

Performance


API Design Fundamentals Pre-build and reuse data

Control memory management

Control command generation and execution

Application controls rendering


Putting Developer in the Driver Seat


… or in the Driver Developer Seat

Image courtesy of Brian Bennett

Mantle Core Features


Execution Model

Graphics

Compute

DMA

GPU

. . .


Execution Model

Graphics

Compute

DMA

GPU

. . .

Queues


Execution Model

Graphics

Compute

DMA

GPU

. . .

Queues Application

App thread

App thread

App thread

App thread

App thread


Decoupled GPU Memory

Memory

State

API object

Other APIs Mantle

Memory

State

API object


Memory Management Application controls memory

… both GPU and CPU

Leverages GPU Memory Virtualization

Much more general than other APIs


GPU Page Table Remapping

Page N

Page 1

Page 0

GPU Virtual Address space Remapping table

“Virtual”

allocation

“Real”

allocation


Monolithic Pipelines

Graphics pipeline example

IA VS HS DS

Tessellator

GS RS PS

DB

CB

Pipeline state

Index Data Resources Targets Dynamic state


Generalized Resources Other APIs

Index buffers

Vertex buffers

Constant buffers

Staging resources

Textures

UAVs

Texture Arrays

. . .

Memory

Mantle

Images


New Binding Model

Best of traditional and bindless paradigms

Pipeline Memory

Image

Memory

Image


Resource Preparation

Application manages resource/memory state

Application manages hazards (e.g. RAW, WAW)

Represents translation of usage model


Preparation Example

Render target Shader resource

Cache flush

Decompression

. . .


… and Much More

Pipeline

serialization

Advanced MSAA

features

Advanced

control flow

Wait, There Is More…


Multi-device

Application

App thread

App thread

App thread

App thread

App thread

Graphics

Compute

DMA

GPU

. . .


Multi-device

Application

App thread

App thread

App thread

App thread

App thread

Graphics

Compute

DMA

GPU 1

. . .

Graphics

Compute

DMA

GPU 0

. . .


CrossFire Unleashed Going beyond AFR rendering

Flexible workload scaling and partitioning

Asymmetric configurations (APU+dGPU)

Unlocking novel usage scenarios


Debugging & Tools

Tools are very important

Built-in debugging and validation

Extensive multi-level checking

Controls to stress-test application


Summary of Benefits Empowering lower spec systems

More predictable performance and behavior

Sharing PC optimizations with next gen consoles

Opportunity for novel techniques


Want to Know More?

Beta program starts soon

Talk to AMD ISV Team

See more cool presentations today


Big thanks to

Mantle dev team!


DISCLAIMER & ATTRIBUTION

The information presented in this document is for informational purposes only and may contain technical inaccuracies, omissions and typographical errors.

The information contained herein is subject to change and may be rendered inaccurate for many reasons, including but not limited to product and roadmap changes, component and motherboard version changes, new model and/or product releases, product differences between differing manufacturers, software changes, BIOS flashes, firmware upgrades, or the like. AMD assumes no obligation to update or otherwise correct or revise this information. However, AMD reserves the right to revise this information and to make changes from time to time to the content hereof without obligation of AMD to notify any person of such revisions or changes.

AMD MAKES NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE CONTENTS HEREOF AND ASSUMES NO RESPONSIBILITY FOR ANY INACCURACIES, ERRORS OR OMISSIONS THAT MAY APPEAR IN THIS INFORMATION.

AMD SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. IN NO EVENT WILL AMD BE LIABLE TO ANY PERSON FOR ANY DIRECT, INDIRECT, SPECIAL OR OTHER CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF ANY INFORMATION CONTAINED HEREIN, EVEN IF AMD IS EXPRESSLY ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

ATTRIBUTION

© 2013 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD Arrow logo and combinations thereof are trademarks of Advanced Micro Devices, Inc. in the United States and/or other jurisdictions.

GS-4112, Mantle: Empowering 3D Graphics Innovation, by Guennadi Riguer and Brian Bennett

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Transcript of GS-4112, Mantle: Empowering 3D Graphics Innovation, by Guennadi Riguer and Brian Bennett