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Welcome

Welcome. Alireza Moghaddam http://mycourses.humber.ca alireza@cse.yorku.ca alireza.moghaddam@humber.ca. Alireza Moghaddam Humber College. Lecture 1. Game 540. Course Material. Assignments, Labs, Practice Tests, Quiz, Exam .

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Welcome

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  1. Welcome Alireza Moghaddam http://mycourses.humber.ca alireza@cse.yorku.caalireza.moghaddam@humber.ca Alireza Moghaddam Humber College Lecture1 Game 540

  2. Course Material Assignments, Labs, Practice Tests, Quiz, Exam Extra Text: Wright, Richard S., 2011   OpenGL superbible : comprehensive tutorial and reference” Good to have, but not needed for this course.

  3. Course Material (2) • I’ll introduce some resources corresponding to each chapter: • Source codes, 3D models, examples, etc. • You are more than welcome to examine them at home to understand the material better. • But, never use them for your labs, assignments or projects. (No Copy & paste)

  4. Grading Scheme Assignments: 4 x 5% = 20% Project: 20% Mid-Term: 25% Final: 35% Do not wait for the deadlines to come. Sometimes, debugging may take lots of time.

  5. Practice • The best way to become an expert in OpenGL is: • To read and understand • To exercise • Try to understand the infrastructure. • Review matrices, Matrix operations, Rotation, Translation, etc.

  6. Office Hours • I’m always here to help you. • You can always contact me by email. • I try to be a fast responder  • You will get a reply by not more than a day. • My office hours will be ???????

  7. Together • Ask me anything! • Class material • Help YOU solve the assignment questions. • Material missed from previous courses

  8. Useful Learning Techniques Before reading the solutions to the assignments. • Work hard on solving them on your on. • Study the text and slides. • Get help, but not answers from friends, Instructor, …

  9. Useful Learning Techniques After reading the solutions to the assignments. • Study the solutions. • Understand the solutions. • Memorize the solutions. • The questions on the tests will be different. • But the answers will be surprisingly close.

  10. Useful Learning Techniques Please ask questions!

  11. OpenGL • Software Interface to graphics hardware • OpenGL library (200 commands) • Hardware independent interface • Contains geometric primitives: • Points • Lines • Polygons

  12. OpenGL Utility Library (GLU) • Sophisticated Library (extends OpenGL) • Contains 50 commands • Provides modeling features • Quadric surfaces • NURBS (Non-Uniform Rational B-Spline) • Standard part of every OpenGL library

  13. NURB

  14. OpenGL Rendering Pipeline

  15. Rendering Pipeline • Evaluators • Deriving vertices from basis functions • Vertices can be used to represent a surface • Per-Vertex Operations • Converts vertices into primitives i.e. line, polygon, etc. • Does mathematical operations, i.e. transformation, rotation, projection, etc.

  16. Rendering Pipeline • Rasterization: Conversion of geometric and pixel data into fragments. • Each fragment corresponds to a pixel in frame buffer. • When creating models, many parameters have to be considered, e.g. shading model, color, point size, etc.

  17. Fragment Operations • Before a fragment be placed in frame buffer, the following can be controlled: • Texture Mapping • Fog calculations • Alpha Test, depth buffer test • Blending, masking, etc.

  18. OpenGL Command Syntax • Start with glCaptial letter e.g. glVertex • Followed by the number of parameters, e.g. glVertex3 • Followed by type of parameters, e.g. glVertex3f(1.0, 2.0, 3.0) • Constants start with GL_, e.g. GL_COLOR_BUFFER_BIT

  19. Next Session OpenGL 2D Programming Introduction

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