Advanced Metal Shader Optimization

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<strong>Shader</strong> Performance Fundamentals Conclusion Pick appropriate address spaces for arguments Structure your data/rendering to leverage buffer preloading Use early fragment tests to reduce shading of objects with resource writes Do enough work in each compute thread to amortize launch overhead
<strong>Shader</strong> Performance Fundamentals Conclusion Pick appropriate address spaces for arguments Structure your data/rendering to leverage buffer preloading Use early fragment tests to reduce shading of objects with resource writes Do enough work in each compute thread to amortize launch overhead Use the smallest-scoped barrier you can
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Graphics and Games #WWDC16 Advanced
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Metal at WWDC This Year A look at t
Page 5 and 6:
Optimizing Shaders An overview Ther
Page 7 and 8:
Metal Pipeline Buffer Buffer Textur
Page 9 and 10:
Shader Performance Fundamentals
Page 11 and 12: Address Spaces Comparison GPUs have
Page 13 and 14: Address Spaces Constant memory Read
Page 15 and 16: Address Spaces Example: vertex data
Page 17 and 18: Address Spaces Example: projection
Page 19 and 20: Address Spaces Example: skinning ma
Page 21 and 22: Address Spaces Example: per-instanc
Page 23 and 24: Buffer Preloading Buffer loads can
Page 25 and 26: Constant Buffer Preloading Direct l
Page 27 and 28: Constant Buffer Preloading Use cons
Page 33 and 34: Constant Buffer Preloading A practi
Page 39 and 40: Vertex Buffer Preloading Fixed-func
Page 41 and 42: Fragment Function Resource Writes N
Page 43 and 44: Compute Kernel Organization Per-thr
Page 45 and 46: kernel void sobel_1_1(/* ... */ ush
Page 53 and 54: continue to pixel 2... dstCoord.x++
Page 55 and 56: continue to pixel 2... dstCoord.x++
Page 57 and 58: Compute Kernel Organization NEW Con
Page 59 and 60: Shader Performance Fundamentals Con
Page 61: Shader Performance Fundamentals Con
Page 65 and 66: GPU Architecture Focus on the bottl
Page 67 and 68: Optimization Opportunities Data typ
Page 69 and 70: Data Types Using half and short ari
Page 77 and 78: Arithmetic Built-ins Use built-ins
Page 79 and 80: Arithmetic A8 and later GPUs are sc
Page 81 and 82: Arithmetic ILP (Instruction Level P
Page 83 and 84: Arithmetic A8 and later GPUs have v
Page 85 and 86: Arithmetic A8 and later GPUs have v
Page 87 and 88: Arithmetic Integer divisions Avoid
Page 89 and 90: Arithmetic Fast-math If you absolut
Page 91 and 92: Control Flow Control flow uniform a
Page 93 and 94: Memory Access Stack access Avoid dy
Page 95 and 96: Memory Access Stack access Avoid dy
Page 97 and 98: Memory Access Loads and stores One
Page 99 and 100: Memory Access Loads and stores One
Page 101 and 102: Memory Access Loads and stores Use
Page 103 and 104: Memory Access Loads and stores Use
Page 105 and 106: Latency/Occupancy The more latency,
Page 107 and 108: Memory Access Latency-hiding: False
Page 109 and 110: Memory Access Latency-hiding: False
Page 111 and 112: Summary Pick correct address spaces
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Summary Pick correct address spaces
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More Information https://developer.
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Labs Xcode Open Hours Metal Lab Xco
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Advanced Metal Shader Optimization

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