Christina_Coffin_Programming_SPU_Based_Deferred - Dice

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Past: Frostbite 1 Tuesday, March 8, 2011 Before getting into the lowlevel bits of <strong>SPU</strong> based deferred shading in the frostbite 2 engine, I want to briefly cover the motivations behind this. Past History: Frostbite 1 (Bad Company 2 / Medal of Honor MP) Forward rendered Limitations with Night time and indoor lighting Limited Light sources
Past: Frostbite 1 Forward Rendered + Destruction + Limited Lighting Tuesday, March 8, 2011 Before getting into the lowlevel bits of <strong>SPU</strong> based deferred shading in the frostbite 2 engine, I want to briefly cover the motivations behind this. Past History: Frostbite 1 (Bad Company 2 / Medal of Honor MP) Forward rendered Limitations with Night time and indoor lighting Limited Light sources
Page 1 and 2: SPU-based Deferred Shading for Batt
Page 3: Introduction Maxxing out mature con
Page 7 and 8: Precomputed + Static = L Tuesday, M
Page 9 and 10: Why SPU-based Deferred Shading Want
Page 11 and 12: Multiple lighting models + material
Page 13 and 14: Rendering Frame Timeline Note: Siz
Page 15 and 16: Setup Rendering Data Flow Cell Memo
Page 17 and 18: Setup Rendering Data Flow Cell Memo
Page 19 and 20: SPU Tile Based Shading work units T
Page 21 and 22: SPU Shading Flow Overview For each
Page 23 and 24: Getting the Tile Data onto SPUs....
Page 25 and 26: SPU LIGHT TILE CULLING Tuesday, Mar
Page 27 and 28: SPU SHADING LOOP Tuesday, March 8,
Page 29 and 30: Core shading components 3MRT + Z =
Page 31 and 32: Gbuffer data expansion to SoA for s
Page 33 and 34: DMA output finished pixels Finished
Page 35 and 36: ALGORITHMIC OPTIMIZATIONS Tuesday,
Page 37 and 38: Tile Light Culling 2 Light Culling
Page 39 and 40: SubTile Light Culling SPU LS FB Til
Page 41 and 42: Lights per 64x64 pixel tile Tuesday
Page 43 and 44: The upside of all of this culling w
Page 45 and 46: Algorithmic optimization #0 Tuesday
Page 47 and 48: Algorithmic optimization #0 Materia
Page 49 and 50: Algorithmic optimization #1 Normal
Page 51 and 52: Tuesday, March 8, 2011
Page 53 and 54: Algorithmic optimization #2 Support
Page 55 and 56:
Algorithmic optimization #4 Branch
Page 57 and 58:
Branching if attenuation for 16 pix
Page 59 and 60:
Branching if attenuation for 16 pix
Page 61 and 62:
Algorithmic optimization #5 No Ligh
Page 63 and 64:
Algorithmic Optimization # 6 Spheri
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CODE OPTIMIZATIONS Tuesday, March 8
Page 67 and 68:
Code optimization #1: Loop Unrollin
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Code optimization #3 Instruction Pi
Page 75 and 76:
Specular power LUT From a GPU shade
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Code Optimization # 5 SPU Shading C
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BEST PRACTICES Tuesday, March 8, 20
Page 81 and 82:
Possible Code Permutations Material
Page 83 and 84:
’SPA’ (SPU ASSEMBLER) Tuesday,
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’SPA’ (SPU ASSEMBLER) SPA is go
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Conclusions SPUs are more than capa
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Special Thanks ›Johan Andersson
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References A Bizarre Way to do Real
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Christina_Coffin_Programming_SPU_Based_Deferred - Dice

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