Mobilizing Call Of Duty - The Khronos Group Inc...' v o s µ o l v K ] u ] Ì ] } v Z v W ² D ] v ]...

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Mobilizing Call of Duty: Bringing a Blockbuster Title to Android Reboot Develop Red 2019 Benjamin Mitchell GameDev Engineer, Samsung Electronics

Transcript of Mobilizing Call Of Duty - The Khronos Group Inc...' v o s µ o l v K ] u ] Ì ] } v Z v W ² D ] v ]...

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Mobilizing Call of Duty:Bringing a Blockbuster Title to AndroidReboot Develop Red 2019

Benjamin MitchellGameDev Engineer, Samsung Electronics

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Galaxy GameDev : since 2016

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Bringing Call of Duty to Mobile

• Call of Duty Mobile

• Adaptive Performance

• Vulkan Optimizations

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Call of Duty Mobile

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Call of Duty Mobile

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Call of Duty Mobile

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Call of Duty Mobile

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Call of Duty Mobile

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Mobile Limitation

FPS

Core Freq

Temperature After Throttling• Temperature– No active cooling

– Performance Throttling

• Power– Limitation of Battery

• Performance– Hardware Fragmentation

• Optimization is out of the Developer’s control.

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Adaptive Performance

Galaxy Game SDK

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• Gather Data- Device Performance- Thermal Trends

• Adapt Performance- Adjust Quality Settings- Modify performance requirements

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Power Manager

Power Budget Control

Default Core Frequencies

With Frequency Cap

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Power Manager

Frame Time Tracking

1.0 ms

Bottleneck Detection

FrameTime

CPUTime

GPUTime

Target FPS

CPU

GPUGPUTime

CPUTime

FrameTime

Bottleneck Detection

FrameTime

CPUTime

GPUTime

Target FPS

CPU

GPU

1.0 ms

1.0 ms

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Default Power ManagerAuto Perf Control

Temp Trend

Target FPS

U/D CPU

U/D GPU

Value

U/D CPU

U/D GPU

Update Interval

CPU Level

CPU Level CPU Level

GPU Level

GPU Level GPU Level

TempTrend

Bottleneck Detection

FrameTime

CPU Time

GPUTime

Target FPS

CPU

GPU

Bottleneck

Mode Allow U/D CPU

Allow U/D GPU

GPUTime

CPUTime

FrameTime

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Adaptive Performance Quality Scaling

• Quality Scale Factors

• Shadow/Rendering Distance

• Texture LoD

• Animation LoD

• Target Frame Rate

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Power Manager + Dynamic Quality Scaling

30

15

200 10

Time [m]

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Adaptive Performance is now available

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Adaptive Performance is now available

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Adaptive Performance in Call of Duty Mobile

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Adaptive Performance in Call of Duty Mobile

• Quality Scale Factors

• Shadow Distance

• Foliage LoD

• Animation LoD

• Target Frame Rate

• Power Management

• Bottleneck Detection

• CPU/GPU Power Budget Control

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Adaptive Performance

Feature Parameter Scaling Impact

Shadow Distance 80 ~ 50 CPU 0~10% offloading

Foliage LOD 1 ~ 0.8 GPU 0~5% offloading

Animation LOD 0 ~ 2 CPU 0~3% offloadingGPU 0~1% offloading

Target Frame Rate 57 ~ 60 CPU 0~5% offloadingGPU 0~5% offloading

Shadow Distance(80 ~ 50)

Foliage LOD(1.0 ~ 0.8)

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Adaptive Performance

• Adaptive Performance

vs Normal Condition

Feature ADP Normal

FPS 58 54Stability (%) 100 100

CPU (%) 11.37 11.69

GPU (%) 80.08 87.85

FPS

ADP-FPS Normal-FPS

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Adaptive Performance

• Can save power and

manage thermal better

Feature ADP Normal

FPS 58 54Stability (%) 100 100

CPU (%) 11.37 11.69

GPU (%) 80.08 87.85

Temperature

Normal ADP 60 160 260 360 460

Max Freq

ADP-CPU ADP-GPU

Normal-CPU Normal-GPU

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General Vulkan Optimizations

• Pipeline Barriers

• Ensure most optimal stage masks

• Batch them!• Load/Store Ops

• You don’t always have to care!

• LoadOpLoad and StoreOpStore• Cache Stuff

• PSOs

• Descriptor Sets

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General Vulkan Optimizations

• Pipeline Barriers

• Ensure most optimal stage masks

• Batch them!• Load/Store Ops

• You don’t always have to care!

• LoadOpLoad and StoreOpStore• Cache Stuff

• PSOs

• Descriptor Sets

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General Vulkan Optimizations• Pipeline Barriers

— Ensure optimal use of stage masks

— This is NOT optimal

Vertex Shader

Fragment Shader

Vertex Shader

...

Fragment Shader

Vertex Shader

...

Fragment Shader

...

SRC VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT

DST VK_PIPELINE_STAGE_VERTEX_SHADER_BIT

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General Vulkan Optimizations• Pipeline Barriers

— Ensure optimal use of stage masks

— This IS optimal

Vertex Shader

Fragment Shader

Vertex Shader

...

Fragment Shader

Vertex Shader

...

Fragment Shader

...

SRC VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT

DST VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT

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General Vulkan Optimizations• Pipeline Barriers

— Batch them!

vkCmdPipelineBarrier(…, 1, &barrier);

vkCmdPipelineBarrier(…, 1, &barrier);

vkCmdPipelineBarrier(…, 1, &barrier);

vkCmdPipelineBarrier(…, 1, &barrier);

vkCmdPipelineBarrier(…, 1, &barrier);

vkCmdPipelineBarrier(…, 5, &barriers.getData());

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General Vulkan Optimizations

• Pipeline Barriers

• Ensure most optimal stage masks

• Batch them!• Load/Store Ops

• You don’t always have to care!

• LoadOpLoad and StoreOpStore• Cache Stuff

• PSOs

• Descriptor Sets

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General Vulkan Optimizations• Load/Store Ops

— You don’t always have to care!

colorAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE

colorAttachment.storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE

colorAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_LOAD

colorAttachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE

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General Vulkan Optimizations

• Pipeline Barriers

• Ensure most optimal stage masks

• Batch them!• Load/Store Ops

• You don’t always have to care!

• LoadOpLoad and StoreOpStore• Cache Stuff

• Use VKPipelineCache

• Descriptor Sets

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General Vulkan Optimizations• Cache Stuff

— Use VkPipelineCache

— Descriptor Sets

vkCreateGraphicsPipelines(device, VK_NULL_HANDLE, …);

1st Run

vkCreateGraphicsPipelines(device, VK_NULL_HANDLE, …);

2nd Run

vkCreateGraphicsPipelines(device, pipelineCache, …);

2nd Run

vkCreateGraphicsPipelines(device, VK_NULL_HANDLE, …);

1st Run

vkCreatePipelineCache(device, &createInfo, NULL, &cache);

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General Vulkan Optimizations• Cache Stuff

— Use VkPipelineCache

— Descriptor Sets

vkUpdateDescriptorSets(device, …);

1st Frame

vkUpdateDescriptorSets(device, …);

All remaining Frames

descriptorSet = someDescriptorMap.find(resourceKey);

All remaining Frames

vkUpdateDescriptorSets(device, …);

1st Frame

someDescriptorMap.emplace(resourceKey, &descriptorSet);

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General Vulkan Optimizations

• Pipeline Barriers

• Ensure most optimal stage masks

• Batch them!• Load/Store Ops

• You don’t always have to care!

• LoadOpLoad and StoreOpStore• Cache Stuff

• PSOs

• Descriptor Sets

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General Vulkan Optimizations

• WaitForFence

• Try to avoid it!

• Use a pool of Command Buffers• RenderPasses

• Minimize switching

• Combine passes!• Threads

• Put stuff on other threads.

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General Vulkan Optimizations

• WaitForFence

• Try to avoid it!

• Use a pool of Command Buffers• RenderPasses

• Minimize switching

• Combine passes!• Threads

• Put stuff on other threads.

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General Vulkan Optimizations• WaitForFences

— Try to avoid it!

— Make use of pools of command buffers

…

vkWaitForFences(device, 1, &fence, true, timeout);

…if(!fencePool.empty())

fence = fencePool.pop_back();

Else

fence = vkCreateFence(…, &fenceToUse);

result = vkGetFenceStatus(device, fence);

if(result == VK_STATUS_NOT_READY)

fencePool.push_back(fence);

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General Vulkan Optimizations

• WaitForFence

• Try to avoid it!

• Use a pool of Command Buffers• RenderPasses

• Minimize switching

• Combine passes!• Threads

• Put stuff on other threads.

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General Vulkan Optimizations• RenderPasses

— Minimize switching

vkCmdBeginRenderPass(commandBuffer, &beginInfo, contents);

vkCmdEndRenderPass(commandBuffer);

vkCmdBeginRenderPass(commandBuffer, &beginInfo, contents);

DrawObjects2();

DrawObjects1();

vkCmdEndRenderPass(commandBuffer);

vkCmdBeginRenderPass(commandBuffer, &beginInfo, contents);

DrawObjects2();

DrawObjects1();

vkCmdEndRenderPass(commandBuffer);

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General Vulkan Optimizations

• WaitForFence

• Try to avoid it!

• Use a pool of Command Buffers• RenderPasses

• Minimize switching

• Combine passes!• Threads

• Put stuff on other threads.

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General Vulkan Optimizations• Threads

Task 1 Task 2 Task 3 Task 1

Task 1 Task 2

Task 3

Original

Multi-Threaded

Thread 1

Thread 2

Thread 1

Task 3

Task 1 Task 2

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General Vulkan Optimizations

• WaitForFence

• Try to avoid it!

• Use a pool of Command Buffers• RenderPasses

• Minimize switching

• Combine passes!• Threads

• Put stuff on other threads.

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Vulkan Optimizations in Call of Duty Mobile

• Single Scratch Buffer

• Low Priority Destroy Thread

• Descriptor Set Batching/Caching

• RenderPass Load/Store

• Threaded Present

• VB, IB Binding Optimization

• Direct Buffer Access

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• Single Scratch Buffer

• Low Priority Destroy Thread

• Descriptor Set Batching/Caching

• RenderPass Load/Store

• Threaded Present

• VB, IB Binding Optimization

• Direct Buffer Access

Vulkan Optimizations

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Vulkan Optimizations

— Ring buffer for all needs

— Usually recreated only during first load

Allocate Allocate Allocate

offset offset offset

Allocate

Free Memory

Allocate

Not enough memoryLarger buffer

• Single Scratch Buffer

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Vulkan Optimizations

• Single Scratch Buffer

• Low Priority Destroy Thread

• Descriptor Set Batching/Caching

• RenderPass Load/Store

• Threaded Present

• VB, IB Binding Optimization

• Direct Buffer Access

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Vulkan Optimizations

Signal

DestroyThread

• Low Priority Destroy Thread

Render thread Destroy thread

Delayed Destroy

Delayed Destroy

Delayed Destroy

Garbage Collect

vkDestroy***

vkDestroy***

vkDestroy***

Wait

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Vulkan Optimizations

• Single Scratch Buffer

• Low Priority Destroy Thread

• Descriptor Set Batching/Caching

• RenderPass Load/Store

• Threaded Present

• VB, IB Binding Optimization

• Direct Buffer Access

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Vulkan Optimizations• Descriptor Set Batching/Caching

vkUpdateDescriptorSets

vkUpdateDescriptorSets

vkUpdateDescriptorSets

vkUpdateDescriptorSets

vkUpdateDescriptorSets

vkUpdateDescriptorSets

— Combine separate Update calls into one

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Vulkan Optimizations• Descriptor Set Batching/Caching

— Cache and reuse sets with same resources

AllocateDS+

UpdateDS

BindDS+

Draw…

AllocateDS+

UpdateDS

BindDS+

Draw…

AllocateDS+

UpdateDS

BindDS+

Draw… …

AllocateDS+

UpdateDS

BindDS+

Draw…

BindDS+

Draw……

BindDS+

Draw…

Allocate and update Descriptor Sets before each draw call

Reuse Descriptors Sets from cache

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Vulkan Optimizations• Descriptor Set Batching/Caching

— Cache and reuse sets with same resources

BindDS+

Draw…

BindDS+

Draw…

BindDS+

Draw… …

AllocateDS+

UpdateDS

BindDS+

Draw…

BindDS+

Draw……

BindDS+

Draw…

AllocateDS+

UpdateDS

AllocateDS+

UpdateDS

AllocateDS+

UpdateDS

Allocate and update Descriptor Sets before each draw call

Reuse Descriptors Sets from cache

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Vulkan Optimizations• Descriptor Set Batching/Caching

— Cache and reuse sets with same resources

AllocateDS+

UpdateDS

BindDS+

Draw…

Allocate and update Descriptor Sets before each draw call

Reuse Descriptors Sets from cache

AllocateDS+

UpdateDS

BindDS+

Draw…

AllocateDS+

UpdateDS

BindDS+

Draw… …

BindDS+

Draw…

BindDS+

Draw……

BindDS+

Draw…

AllocateDS+

UpdateDS

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Vulkan Optimizations

• Single Scratch Buffer

• Low Priority Destroy Thread

• Descriptor Set Batching/Caching

• RenderPass Load/Store

• Threaded Present

• VB, IB Binding Optimization

• Direct Buffer Access

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Vulkan Optimizations• RenderPass Load/Store

When render target is being fully redrawn there is no need to load previous data.

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Vulkan Optimizations

• Single Scratch Buffer

• Low Priority Destroy Thread

• Descriptor Set Batching/Caching

• RenderPass Load/Store

• Threaded Present

• VB, IB Binding Optimization

• Direct Buffer Access

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Vulkan Optimizations• Threaded Present

Prepare Render Present Prepare

Prepare Render Prepare

Present

Original

Threaded present

Render thread

Present thread

Render thread

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Vulkan Optimizations

• Single Scratch Buffer

• Low Priority Destroy Thread

• Descriptor Set Batching/Caching

• RenderPass Load/Store

• Threaded Present

• VB, IB Binding Optimization

• Direct Buffer Access

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Vulkan Optimizations• VB, IB Binding Optimization

As buffers are same there is no need to bind them every draw call.

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Vulkan Optimizations

• Single Scratch Buffer

• Low Priority Destroy Thread

• Descriptor Set Batching/Caching

• RenderPass Load/Store

• Threaded Present

• VB, IB Binding Optimization

• Direct Buffer Access

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Vulkan Optimizations

Upload(vertex/index/uniform data)

Main thread

Copy

Device bufferRender thread

Memory

Memory

Copy

Upload(vertex/index/uniform data)

Main thread

Copy

Device buffer

Render thread

• Direct Buffer Access

Original

Direct access

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Top 3 Takeaways

1: Use Adaptive Performance!

[email protected]

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Top 3 Takeaways

1: Use Adaptive Performance!2: Check your barriers!

[email protected]

Page 69: Mobilizing Call Of Duty - The Khronos Group Inc...' v o s µ o l v K ] u ] Ì ] } v Z v W ² D ] v ] u ] Ì Á ] Z ] v P YN&PG%HJLQ5HQGHU3DVV FRPPDQG%XIIHU EHJLQ,QIR FRQWHQWV YN&PG(QG5HQGHU3DVV

Top 3 Takeaways

1: Use Adaptive Performance!2: Check your barriers!3: Check your load/store ops!

[email protected]

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Top 3 Takeaways

1: Use Adaptive Performance!2: Check your barriers!3: Check your load/store ops!3.5: Thread stuff!

[email protected]

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Thank You!

[email protected]

[email protected]


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