1. Graphics, Modeling, and Textures Computer Game Design and Development

2. Graphics Considerations Frame and back buffers – Avoid artifacts (jitter and visible drawing) – Swap or copy? Depth and stencil buffer Triangles – Easily interpolate – Planarity Vertices & coordinate space

3. Depth Bits From http://www.agidev.com/articles/a.php?id=6&page=4

4. Limiting What we Render View frustrum – Near and far planes Clipping Cull when possible – Render Volume Partitioning

5. Backface Culling

6. Quadtree partitioning Collision detection Outdoor visibility checking Algorithm (2D): – X/Y : consider bits – Left shift at each level in tree – When at leaf, stop

7. Quadtree Visualized

8. Graphic Primitives

9. Mesh as Triangle Strip

10. Indexed Strips

11. Applying Textures

12. Lighting http://machinesdontcare.wordpress.com/2008/06/ http://www.directxtutorial.com/Tutorial9/B-Direct3DBasics/dx9B3.aspx

13. Modeling

14. Modeling (cont)

15. Using Normal Maps and Textures

16. Normal Maps and LOD http://www.inition.co.uk/inition/product.php?SubCatID_=38&URL_=product_ffhaptic_sensable_claytools

17. http://upload.wikimedia.org/wikipedia/commons/3/36/Normal_map_example.png

18. Level of Detail Hardware limits number of polys rendered Use high-level models when possible Drop to low poly models (LOD) when needed

19. Level Editing Target fixed poly count (thought allow for flexibility and customization)

20. Low-Poly Count Modeling

21. Final thoughts Major difference in modeling and using models Art & programming & level/character design Take graphics in summer!