Presentation GS-4112, Mantle: Empowering 3D Graphics Innovation, by Guennadi Riguer and Brian Bennett, at the AMD Developer Summit (APU13) November 11-13, 2013.

1. MANTLE: EMPOWERING 3D GRAPHICS
INNOVATION
GUENNADI RIGUER – MANTLE CHIEF ARCHITECT
BRIAN BENNETT – MANTLE ARCHITECT

2. What Is Mantle?
Mantle is innovation
Just the right abstraction level
Feature set for modern GPUs
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3. Why Mantle?
Developers want it
Performance and control
Excitement and innovation
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4. Mantle isn’t for Everyone
Do you care about performance?
Do you want control?
Do you care about bridging multiple platforms?
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5. Solutions for Performance
Designed for GPU efficiency
Unlocking new performance features
“Small batch” problem is history
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6. “Small batch” Today
3-5K
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7. Amazing Developers
3-5K
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10K

8. Mantle Target
100K
10K
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9. Current Issues
API overhead
Lack of proper threading
Memory management
Lack of direct GPU control
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10. Design Philosophy
Performance
Simplicity
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Features

11. API Design Fundamentals
Pre-build and reuse data
Control memory management
Control command generation and execution
Application controls rendering
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12. Putting Developer in the Driver Seat
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13. Image courtesy of Brian Bennett
… or in the Driver Developer Seat 
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14. Mantle Core
Features

15. Execution Model
Graphics
Compute
DMA
...
GPU
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16. Execution Model
Graphics
Compute
DMA
...
Queues
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GPU

17. Execution Model
App thread
App thread
Graphics
App thread
Compute
App thread
DMA
...
App thread
Queues
Application
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GPU

18. Decoupled GPU Memory
Other APIs
Mantle
Memory
Memory
State
State
API object
API object
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19. Memory Management
Application controls memory
… both GPU and CPU
Leverages GPU Memory Virtualization
Much more general than other APIs
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20. GPU Page Table Remapping
GPU Virtual Address space
Page N
“Virtual”
allocation
“Real”
allocation
Page 1
Page 0
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Remapping table

21. Monolithic Pipelines
Pipeline state
DB
IA
VS
HS
DS
GS
RS
PS
CB
Tessellator
Index Data
Resources
Dynamic state
Graphics pipeline example
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Targets

22. Generalized Resources
Other APIs
Index buffers
Vertex buffers
Constant buffers
Staging resources
Textures
Texture Arrays
UAVs
...
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Mantle
Memory
Images

23. New Binding Model
Pipeline
Memory
Image
Image
Memory
Best of traditional and bindless paradigms
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24. Resource Preparation
Application manages resource/memory state
Application manages hazards (e.g. RAW, WAW)
Represents translation of usage model
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25. Preparation Example
Cache flush
Decompression
...
Render target
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Shader resource

26. … and Much More
Pipeline
serialization
Advanced MSAA
features
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Advanced
control flow

27. Wait,
There Is
More…

28. Multi-device
App thread
App thread
Graphics
App thread
Compute
App thread
DMA
App thread
...
Application
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GPU

29. Multi-device
App thread
Graphics
App thread
Graphics
Compute
App thread
Compute
DMA
App thread
DMA
...
App thread
...
GPU 0
Application
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GPU 1

30. CrossFire Unleashed
Going beyond AFR rendering
Flexible workload scaling and partitioning
Asymmetric configurations (APU+dGPU)
Unlocking novel usage scenarios
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31. Debugging & Tools
Tools are very important
Built-in debugging and validation
Extensive multi-level checking
Controls to stress-test application
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32. Summary of Benefits
Empowering lower spec systems
More predictable performance and behavior
Sharing PC optimizations with next gen consoles
Opportunity for novel techniques
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33. Want to Know More?
Beta program starts soon
Talk to AMD ISV Team
See more cool presentations today
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34. Big thanks to
Mantle dev team!
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35. DISCLAIMER & ATTRIBUTION
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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.
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