1. Graphics, Modeling, and Textures

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

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/

13. Modeling

14. Modeling (cont)

15. Using Normal Maps and Textures

16. Normal Maps and LOD

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. Animation Models consists of multiple meshes
Each mesh has it’s own local coordinates for the vertices in the mesh
Meshes can be “connected” relative to each other via skeletons/bones (rigging)
Render each mesh & position them correctly
Animating a model involves transformations on a per-mesh basis

22. Final thoughts Major difference in modeling and using models
Art & programming & level/character design are of primary consideration