Rasterization on Feynman's Blog

04 | Rasterization (Triangle Discretization and Anti-Aliasing)

Sun, 16 Aug 2026 12:00:00 +0800

Instructor: Lingqi Yan | UCSB Bilibili: https://www.bilibili.com/video/BV1X7411F744

Rasterization is the process of converting vector graphics (geometric descriptions) into pixel images (raster images).

Rasterization = drawing continuous geometry as discrete pixels. It is the foundational technique of real-time rendering.

This chapter corresponds to lectures 5-6 (the depth buffer part corresponds to the start of lecture 7).

Lecture 05 slides (PDF)

Lecture 06 slides (PDF)

Bilibili video

1 Perspective Projection Wrap-Up: fovY and Aspect Ratio

In the MVP transform, the perspective projection frustum is defined by $l, r, b, t$ (left, right, bottom, top bounds of the near clip plane), but in practice developers prefer vertical field of view (fovY) and aspect ratio (assuming symmetry, i.e. $l = -r$, $b = -t$):

01 | Overview & Rasterization

Mon, 20 Jul 2026 12:00:00 +0800

Instructor: Lingqi Yan | UCSB Course Link: https://www.bilibili.com/video/BV1X7411F744

1 What is Computer Graphics

Computer Graphics: The use of computers to synthesize and manipulate visual information.

The core task of computer graphics is to represent, process, render, and display graphics and images in computers.

Application Areas

Area	Examples
Video Games	Real-time rendering, 3D scenes
Film VFX	Offline rendering, visual effects
Animation	CG animation like Frozen, Zootopia
Design & CAD	Industrial design, architectural visualization
Data Visualization	Scientific, engineering, medical data
Virtual Reality	Immersive virtual environments
Augmented Reality	Real-virtual fusion (AR navigation)
Simulation	Physics, weather, black hole visualization

2 Four Core Topics

GAMES101 covers four core topics in modern computer graphics: