Efficient Rendering with DirectX 12 on Intel Graphics

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Binding Example Root Signature 0 Descriptor Table 1 Descriptor Table 2 Shader Resource View t1 b1 t4 t5 u0 b2 t0 SRV Descriptor Heap UAV CBV 3 uint4 Constant b0 {1, 3, 3, 7} cmdList->SetGraphicsRootDescriptorTable(0, [srvGPUHandle]); cmdList->SetGraphicsRootDescriptorTable(1, [uavGPUHandle]); cmdList->SetGraphicsRootConstantBufferView(2, [srvCPUHandle]); cmdList->SetGraphicsRoot32BitConstants(3, {1,3,3,7}, 0, 4); SRV CBV SRV SRV Copyright © 2015, Intel Corporation. All rights reserv ed. *Other names and brands may be claimed as the property of others. 48
Haswell/Broadwell Resource Binding Root constants implemented <strong>with</strong> “push constants” – Buffer that hardware uses to prepopulate EU registers – When EU thread launches, values are immediately available – Can be a GPU performance win vs. loading buffer data Root descriptors also use push constants – Pointers passed as constants to the shader – Data read through general memory path Descriptor tables use “binding table” hardware – Each descriptor binding requires one binding table slot Copyright © 2015, Intel Corporation. All rights reserv ed. *Other names and brands may be claimed as the property of others. 49
Page 1 and 2: Efficient
Page 3 and 4: Decoder Cheat-sheet Intel 4 th Gen
Page 5 and 6: Graphics APIs and Overhead Most GP
Page 7 and 8: Thinner Intel Graphics Driver To a
Page 9 and 10: DirectX 12
Page 11 and 12: Commands and State Copyright © 201
Page 13 and 14: Commands in DirectX</strong
Page 15 and 16: DirectX 11 Deferre
Page 17 and 18: Commands in DirectX</strong
Page 19 and 20: Pipeline State Objects Create PSOs
Page 21 and 22: DirectX 12
Page 23 and 24: Multi-engine on Haswell/Broadwell
Page 25 and 26: GPU Memory in WDDM 1.x Previous AP
Page 27 and 28: Memory Residency Best Practices Al
Page 29 and 30: Typical Discrete GPU Memory Applica
Page 31 and 32: Haswell GPU Virtual Address Limit
Page 33 and 34: Resource Binding Copyright © 2015,
Page 35 and 36: Resource Descriptors Not an API ob
Page 37 and 38: Root Signature Think of it like a
Page 39 and 40: Root Constants Pass a small number
Page 41 and 42: Descriptor Tables Maps continuous
Page 43 and 44: Root Signature Example Root Signatu
Page 45 and 46: Root Signature Example (HLSL) Root
Page 47: Binding Example Root Signature 0 De
Page 51 and 52: Haswell/Broadwell Descriptor Tables
Page 53 and 54: Haswell/Broadwell Descriptor Tables
Page 55 and 56: Resource Binding Summary Minimize
Page 57 and 58: Summary Copyright © 2015, Intel Co
Page 59: Questions? Follow @DirectX

Efficient Rendering with DirectX 12 on Intel Graphics

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