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Mobile Games

Mobile Games. Professor I-fan Shen Lab of High Performance Visualization/Simulation Dept of Computer Science Fudan University. Introduction :. Research History Background Some works on 2D mobile games 3D Mobile Game Engine Future work. Research history:Digital Shadow play.

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Mobile Games

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  1. Mobile Games Professor I-fan Shen Lab of High Performance Visualization/Simulation Dept of Computer Science Fudan University

  2. Introduction: • Research History • Background • Some works on 2D mobile games • 3D Mobile Game Engine • Future work

  3. Research history:Digital Shadow play • Our lab produced a video-clip about the classic Chinese story-butterfly love • This video-clip has been shown on SIGGRAPH 2003

  4. Research history:DunHuang Mural • In 2004,our lab produced a video-clip about DunHuang Mural. • This video-clip has been shown on SIGGRAPH 2004

  5. Checkpoint • Research History • Background • Some works on 2D mobile games • 3D Mobile Game Engine • Future work

  6. Background • Mobile devices are more and more powerful. • But until now, most mobile games are 2D or 2.5D on mobile devices. • In the near future, 3D mobile games will be popular. Now, let’s come back to our Mobile Games

  7. Checkpoint • Research History • Background • Some works on 2D mobile games • 3D Mobile Game Engine • Future work

  8. 2D Mobile Games • Last year, we cooperated with Shanghai TrueColor Multimedia Co., Ltd. • The first commercial product is a RPG game named 《Chinese Cook God》.

  9. Successful Case 1 • Chinese Cook God (Bird E868/898 platform) • Combination of RPG, evolution game, cartoons and Chinese cooking

  10. Successful Case 2 • Golden Life Guard (Symbian60 platform)

  11. Checkpoint • Research History • Background • Some works on 2D mobile games • 3D Mobile Game Engine • Future work

  12. 3D Mobile Game Engine • “WinCE-Based Mobile Graphics Pipeline”---a project funded by Microsoft Research Asia. • We have implemented a sub-set of rendering pipeline on mobile devices.

  13. Main features of mobile devices • Most mobile CPUs doesn’t support floating point numbers. • Thus, we have to use fixed point numbers in stead of floating point numbers. • Most mobile CPUs’ work frequency are relatively low. • ROM’s capacity is limited.

  14. OpenGL ES • We referred to and implemented our own graphics pipeline on mobile devices. • Flow Chart

  15. Main Functions • Geometry Processing • Rasterization • Texture Compression (to be implemented) • Mipmap ( to be implemented ) • Pixel manipulation • Frame buffer operations/miscellaneous • Clear,read Pixels; • Alpha test; • Flush; • Get static stat • Results

  16. Geometry Processing • vertex arrays: Points, Lines, Triangles • vertex lighting

  17. Rasterization • Multi-sampling and anti-aliasing • Texturing • Environment mapping Average 4 samples per pixel But sample only 2 times per pixel

  18. Texture Compression( to be implemented ) • • Texture compression (S3TC Algorithm) • For every 4*4 blocks of texels: • First: Two reference colors encoded in 16 bits; • Then: Another two colors are computed by linear • interpolation. • Thus: each texel in the block can then index • into these four colors and requires only two bits.

  19. Mipmap( to be implemented ) Left: part of a mipmap pyramid with two levels shown. A texel in level n+1 is often computed as some average of four texels in level n. Right: If the four gray texels constitute the 2*2 neighborhood of the sample, our filtering technique (bilinear-average mipmapping) uses the average of those as a filtered value from level n+1.

  20. Pixel manipulation • Fog • Alpha Blending vs Dolphin in a fog Normal dolphin

  21. Terrain Wired Teapot with lighting Results • Now, let’s take a look at some pictures taken from a PDA using our own graphic-pipeline

  22. Results • More results:

  23. Website • Welcome to our website: www.scicomput.com

  24. Checkpoint • Research History • Background • Some works on 2D mobile games • 3D Mobile Game Engine • Future work

  25. Future Work • Fulfill the unimplemented functions • Performance Improvement • Mobile First Personal Shooting game engine • Including: scene management , collision detection , terrain generation and so on

  26. Thank you !

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