Efficient Rendering with DirectX 12 on Intel Graphics

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Haswell/Broadwell Descriptor Tables Root Signature 0 Descriptor Table t1 b1 t4 t5 1 Descriptor Table u0 b2 ~2-<strong>12</strong> reserved slots and render targets HLSL binding u0 b2 t1 b1 t4 t5 … … Binding table index (BTI) 0 1 2 3 4 5 … … Shader compiler Emit proper BTIs Driver runtime Fill in binding tables Copyright © 2015, Intel Corporation. All rights reserv ed. *Other names and brands may be claimed as the property of others. 50
Haswell/Broadwell Descriptor Tables Example 64KB User descriptors Up to ~1 million, each 32 bytes (Gen7.5) 64 bytes (Gen8) Ring of Binding Tables … … UAV CBV … SRV CBV SRV SRV … Surface state base address DWORD 0 DWORD 1 DWORD 2 … DWORD 7 … DWORD 16376 DWORD 16377 DWORD 16378 … DWORD 16384 Copyright © 2015, Intel Corporation. All rights reserv ed. *Other names and brands may be claimed as the property of others. 51
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 and 48: Binding Example Root Signature 0 De
Page 49: Haswell/Broadwell Resource Binding
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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