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Cutting-Edge Rendering Techniques for Portable Devices

Explore state-of-the-art rendering techniques for small screens, like parallax mapping and fluid simulation, optimized for shared resources on portable devices. Dive into GPU implementation, self-shadows, texture compression, and the future of portable hardware evolution.

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Cutting-Edge Rendering Techniques for Portable Devices

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  1. State of the Art Rendering Techniques on Portable Devices Készítette Tömösközi Máté Ferenc Mérnök informatikus MSc. Konzulens Rajacsics Tamás Tanársegéd

  2. Motivation

  3. Limitations • Limited access func. • Shared resources • Small screen • Seperate GPU thread • Special dev. enviroment

  4. Basic texturing Normal mapping Parallax mapping

  5. Parallax Occlusion Mapping • Correct parallax • Self-occlusion • Self-shadows • Simple • Onepass Height profile sampling

  6. Whithout parallax With parallax

  7. Shortcomings of POM • Flattening • Aliasing • Texture overreading • Texture reads should be optimized Low sampling rates

  8. Apprx.Self-shadows Self-shadow Shadow sampling

  9. Height map creation Setup Maya

  10. Texture Compression • Decoding speed • Random access • Compression rate • Compression quality ETC1

  11. DXTn Uncompressed DXT5

  12. ATI2 Original & DXT1 ATI2

  13. Fluid Simulation Navier-Stokes equations Helmholtz-Hodge decomposition • Advection • Pressure • Diffusion • Forces

  14. GPU implementation • Extensive render target usage • Numeric methods • Iterative • Can be encorporated into existing texture based methods s

  15. Buffers Velocity Pressure

  16. Future • Portable hardwares will continoue to evolve • Greater resolutions (Retina Display) • Stereoscopic 3D (Nvidia Tegra 3D) • Multiple devices (Microsoft SmartGlass) Meanwhile at Epic Games

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