CS 445: Topics for Sept 23/25, 2014

• Labs:

  • Complete: Lab 1: Building a Ray Tracer, Part 3
  • Begin: Lab 2: Getting Started with OpenGL

• What are OpenGL (Open Graphics Library) and OpenGL Shading Language (GLSL).
  GPU vs CPU taken from Video Graphics and Genomics: A Real Game Changer?

• One view of the pipeline/data flow

• A few additional libraries we are using:

  • GLUT
  • FreeGLUT
  • GLEW: The OpenGL Extension Wrangler Library (if site down, go here)

• References

  • Your textbook: OpenGL Programming Guide: The Official Guide to Learning OpenGL, Version 4.3, by Dave Shreiner, Graham Sellers, John M. Kessenich, Bill M. Licea-Kane
  • www.opengl.org and OpenGL Shading Language (GLSL)
  • Khronos
  • Reference pages for 3.3. We will be assuming 3.2 or later. Note, the latest version of OpenGL is 4.5 and GLSL is 4.5.
  • OpenGL 3.2 API Quick Reference Card
  • Also look on the links page.

• Tutorials

  • SIGGRAPH University, in particular, look at An Introduction to OpenGL Programming The associated slides may be found here. The tutorial is from 2013. Note, in 2014, they focused on WebGL.
  • Nate Robbins OpenGL tutorials. The functions he uses are deprecated but the concepts are still the same. (will put on gorr-classes)

• Graphics Pipeline:

  • Transformation View of the fixed Geometry Pipeline
  • Mike Bailey's Pipeline with shaders. Hardware View

• Scanline rendering: triangles, transformations, 2D projection, polygon fill, z-buffering...

  • Projection Types
  • View Frustum

• OpenGl Primitives

• Vertex Array Object and Vertex Buffer Object: READ CHAPTER 1 OF YOUR TEXTBOOK (Shreiner)

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