CSU0021 Computer Graphics © Chun-Fa Chang CSU0021 Computer Graphics September 10, 2014

CSU0021 Computer Graphics © Chun-Fa Chang What is Computer Graphics?

CSU0021 Computer Graphics © Chun-Fa Chang Computer Games Real-time, at least 10 FPS (frames/second) Also stimulated the graphics hardware industry –such as NVIDIA and ATI, –Game consoles (Xbox 360, PS3…etc.)

Computer Games State-of-the-Art lighting and shader effects

CSU0021 Computer Graphics © Chun-Fa Chang Computer Animations Offline, photorealistic rendering based on accurate lighting simulation.

CSU0021 Computer Graphics © Chun-Fa Chang The Cars, by Pixar

Graphics Hardware GPUs are hundreds-core processors. –nVidia GTX 780 has 2304 CUDA cores CSU0021 Computer Graphics Image source: NVIDIA

CSU0021 Computer Graphics © Chun-Fa Chang What is 3D Graphics? (Note: No 3D glasses required)

CSU0021 Computer Graphics © Chun-Fa Chang What is Computer Graphics? More specifically, what is 3D graphics? We call this 2D graphics:

CSU0021 Computer Graphics © Chun-Fa Chang What is 3D? Is this 3D graphics?

CSU0021 Computer Graphics © Chun-Fa Chang And this?

CSU0021 Computer Graphics © Chun-Fa Chang Computer Graphics: Wireframe graphics Project Sketchpad Display Processors Storage tube

CSU0021 Computer Graphics © Chun-Fa Chang Raster Graphics Allow us to go from lines and wireframes to filled polygons

CSU0021 Computer Graphics © Chun-Fa Chang Computer Graphics: 1980s & 1990s Realism comes to computer graphics smooth shadingenvironmental mapping bump mapping

CSU0021 Computer Graphics © Chun-Fa Chang Computer Graphics: Photorealism Graphics cards for PCs dominate market –Nvidia, ATI, 3DLabs Game boxes and game players determine direction of market Computer graphics work flow in movie industry: Maya, 3D Studio, Lightwave

New Trend High Performance 3D Graphics –Global illumination and ray tracing –Heterogeneous computing with CPU+GPU (OpenCL) Parallel computing for the masses. 3D Graphics on Mobile Platforms –OpenGL ES shaders on Android or iOS –WebGL and HTML5 CSU0021 Computer Graphics

Programmer’s View: 1990s CSU0021 Computer Graphics Workstation: Silicon Graphics, HP, SUN, IBM X Windows OpenGL PC w/Intel CPU MS Windows Apple Macintosh Mac OS DirectX??

Programmer’s View: 2000s CSU0021 Computer Graphics Workstation: Silicon Graphics, HP, SUN, IBM X Windows OpenGL PC w/Intel CPU + NV or ATI GPU MS Windows MBP, MBA Mac OS DirectX, OpenGL OpenGL iPhone iOS OpenGL ES ARM Android OpenGL ES

Programmer’s View: 2010s CSU0021 Computer Graphics PC w/Intel CPU + NV or ATI GPU MS Windows MBP, MBA Mac OS DirectX, OpenGLOpenGL iPhone, iPad iOS OpenGL ES ARM, Intel Android OpenGL ES Game Engines: Unity, Unreal, CryEngine, Snowdop…etc.

What to Teach in a Computer Graphics Course? “I want to write a game ASAP!” – Unity –Pros: quick, cross platform (PC & mobile) –Cons: less flexibility, limited future WebGL  Our future choice OpenGL  Our choice now! Raster graphics – line drawing, polygon rasterization CSU0021 Computer Graphics

© Chun-Fa Chang 3D Graphics Programming Application Programming Level (Learning to Drive): 1.Describe the objects in 3D coordinates. 2.Set up the camera. 3.Call OpenGL (or any other 3D API). Implementation of a Renderer (Under the Hood): 1.Transform 3D coordinates to 2D. 2.Apply lighting. 3.Draw the dots (pixels).

CSU0021 Computer Graphics © Chun-Fa Chang Hands-On Approach We will look at both levels in parallel. –In some assignments, you will program in the application level. In the graphics pipeline assignments, we will create a 3D renderer. A lot of coding, but most of the design is already done for you. It should be fun!

CSU0021 Computer Graphics © Chun-Fa Chang Course Plan Draw something first Then make them look pretty or make them move really fast! Some 3D models from Internet: –

CSU0021 Computer Graphics © Chun-Fa Chang Some Advices This course involves a lot of programming in C or C++. Do not take this course if: –You are not confident about your programming skill –The ideal time is during your junior or senior year. (The same course will be offered again next year.)