Learn 3D Computer Graphics Programming from Scratch

Course description

This is one of my favorites!

This course is a complete immersion into the fundamentals of computer graphics! You'll learn how a software 3D engine works under the hood, and use the C programming language to write a complete software renderer from scratch; including textures, camera, clipping, and loading complex OBJ files. Pixel per pixel, triangle per triangle, mesh per mesh.

3d programming from scratch

We'll review all the beautiful math that makes 3D computer graphics possible as we tackle all concepts from first principles. We'll also write a comprehensive software renderer that can display complex 3D objects on the screen without the help of any graphics API. No GPU, no OpenGL, no DirectX! Just a C compiler and a little bit of linear algebra is all we need to create a final project that is nothing short of amazing!

The tools you'll need

We'll simply use the command-line, a code editor, and a C compiler. All these tools are multi-platform, so you'll be able to code along on either Windows, macOS, or Linux!

operating system

Also, make sure you have pen and paper ready for the lectures. This course will probably be a little bit different than other programming courses you took before. We will take our sweet time and make sure we understand every formula we find along the way!

game math

Is this course for you?

3d programming tutorial

This is a self-contained course with no prerequisites. However, you will probably get the most out of it if you already know the basics of coding (if-else, loops, functions).

If you never programmed in C before, don't worry! Many successful students come from different languages like Java, Python, JavaScript, Swift, and others. We'll learn to work with the C language together.

About the instructor

gustavo pezzi

Gustavo Pezzi is a university lecturer in London, UK. He has won multiple education awards as a teacher and is also the founder of pikuma.com.

Gustavo teaches fundamentals of computer science and mathematics; his academic path includes institutions such as Pittsburg State University, City University of London, and University of Oxford.

teaching certification
higher education academy
pgclt teaching certification
bpp university award

Course content

35 hours total length 29 Chapters Last updated July 2022
  • Motivations & Learning Outcomes
  • How to Take This Course
  • Configuring Dependencies
  • Project Folder Structure
  • Configuring a Makfile
  • Compiling on Linux
  • Compiling on macOS
  • Configuring Visual Studio on Windows
  • Creating an SDL Window
  • Declaring a Color Buffer
  • Allocating and Freeing Memory
  • Quiz: Memory Allocation
  • SDL Texture
  • Fullscreen Window
  • Exercise: Drawing a Background
  • Drawing Rectangles
  • Quiz: Color Buffer
  • Defining Header Files
  • Quiz: Header Files
  • A Function to Draw Pixels
  • Vectors
  • Declaring a Vector Type
  • Declaring Structs
  • Array of Vector Points
  • Quiz: Vectors and Points
  • Orthographic Projection
  • Isometric Projection
  • Perspective Projection
  • Implementing the Perspective Divide
  • Coordinate System Handedness
  • Quiz: Perspective Projection
  • Transforming Vectors
  • Review of Sine, Cosine, and Tangent
  • Quiz: Trigonometric Functions
  • Rotating Vectors
  • Proof of Angle Sine Addition
  • Proof of Angle Cosine Addition
  • Quiz: Rotating Vectors
  • Fixing our Game Loop Timestep
  • Using a Delay Function
  • Constant Framerate and Variable Delta Time
  • 3D Triangles and Meshes
  • Vertices and Triangle Faces
  • Triangle Edges
  • Quiz: Joystick Input
  • Line Equation
  • DDA Line Drawing Algorithm
  • Do We Need Bresenham Lines?
  • Coding a Function to Draw Lines
  • Dynamic Arrays in C
  • Dynamic Mesh Vertices and Faces
  • Defining the Project Playfield Graphics
  • OBJ File Vertices and Faces
  • Exercise: Loading OBJ File Content
  • OBJ File Triangles and Quads
  • Introduction to Back-face Culling
  • Vector Magnitude
  • Vector Addition
  • Vector Subtraction
  • Vector Scaling
  • Vector Cross Product
  • Finding the Triangle Normal Vector
  • Dot Product
  • Implementing the Back-face Algorithm
  • Vector Normalization
  • Quiz: Vector Operations
  • Triangle Fill
  • Flat-Top & Flat-Bottom Technique
  • Flat-Top Triangle Code
  • Flat-Bottom Triangle Code
  • Avoiding Division by Zero
  • Exercise: Different Rendering Methods
  • Solid Color Triangle Faces
  • Painter's Algorithm
  • Exercise: Sorting Faces by Depth
  • A Simple Sorting Function
  • Matrices Review
  • Matrix Operations
  • Matrix Multiplication
  • Exercise: Matrix Multiplication
  • 2D Rotation Matrix
  • 3D Scale Matrix
  • 3D Translation Matrix
  • 3D Rotation Matrices
  • The World Matrix
  • Order of Matrix Transformations
  • Quiz: Matrix Transformations
  • Translation is Not a Linear Transformation
  • Defining a Projetion Matrix
  • Populating the Perspective Projection Matrix
  • Exercise: Projecting Negative Z Values
  • Projection in OpenGL & DirectX
  • Row-Major and Column-Major Order
  • Flat Shaded Triangles
  • Coding Flat Shading and Light
  • Smooth Shading
  • Gouraud Shading & Phong Shading
  • Representing Textures in Memory
  • Textured Triangles
  • Textured Flat-Top Triangle
  • Textured Flat-Bottom Triangle
  • Barycentric Coordinates
  • Barycentric Weights (α, β, γ)
  • Coding Textured Triangles
  • Quiz: Texture Mapping
  • Perspective Correct Interpolation
  • What Does "Affine" Mean?
  • 3D UV Coordinates
  • Decoding PNG Files
  • Loading PNG File Content
  • Freeing PNG Textures from Memory
  • Quiz: PNG Files
  • Loading OBJ Textures Attributes
  • Preventing Texture Buffer Overflow
  • Rasterization Rules
  • Visualizing Textured OBJ Files
  • Implementing a Z-Buffer
  • Exercise: Z-Buffer for Flat-Shaded Triangles
  • Z-Buffer for Flat-Shaded Triangles
  • Reviewing Dynamic Memory Allocation
  • Camera Space
  • LookAt Camera Model
  • LookAt Camera Transformations
  • Implementing a Variable Delta Time
  • Coding a Simple FPS Camera Movement
  • Quiz: Camera Transformations
  • Frustum Clipping
  • Frustum Planes
  • Exercise: Frustum Planes and Normals
  • Computing Points Inside and Outside Planes
  • Intersection Between Lines and Planes
  • Clipping Polygon Against a Plane
  • Coding the Function to Clip Polygons Against Planes
  • Visualizing Clipped Triangles
  • Horizontal and Vertical FOV
  • Clipping Texture UV Coordinates
  • Clipping Space
  • Quiz: 3D Clipping
  • Deciding What Not to Render
  • Working with Static Variables
  • Refactoring SDL Global Variables
  • Refactoring Light Code
  • Simulating Low-Resolution Display with SDL
  • Exercise: Camera Pitch Rotation
  • Implementing Camera Pitch Rotation
  • Declaring Multiple Meshes
  • Coding Multiple Meshes
  • Coding Multiple Textures
  • Finishing our Code
  • Bonus Lecture: Handedness & Orientation
  • Bonus Lecture: Dedicated Graphics Cards
  • Bonus Lecture: Modern Graphics APIs and Shaders
  • Modern 3D Hardware Techniques
  • Moving Forward

How is this course different?

This course is not just a simple tutorial on how to use an existing graphics library or how to glue OpenGL or Vulkan code together. This course focus on the foundation of 3D graphics and provides a careful review of the math that underpins these concepts.

3d software renderer

If you want to understand how computers display 3D objects on the screen and also learn some of the techniques used in the development of retro 3D games, then buckle up! This is going to be a 35-hour journey of pure nerd fun!

What students are saying

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simgamedev
Game programmer
"The best (not one of the) 101 course on computer graphics! Anyone who wants to get serious about learning computer graphics, learn to write a software render first before trying anything with OpenGL/DX/Vulkan, you will have a much deeper and firm understanding of the pipeline."
05 Aug 2022
Tom Hulton-Harrop
Game Engine and Developer Services @ AWS
"Excellent introduction to 3D graphics!

I have a reasonable amount of experience in games development and 3D graphics programming but had never really gone back to first principles and thought of everything that's required to create a renderer from scratch. This course covers absolutely everything you need to know and is done so in an incredibly accessible way.

The course was easy to follow (each section is broken down into small chunks that make incremental progress a lot easier) and Gustavo's enthusiasm is infectious, making covering the material really enjoyable.

I highly recommend this course for beginners and even for people who are already familiar with rendering and graphics APIs as an effective refresher course. You'll no doubt learn something new along the way!"
24 Jul 2022
"Great course for intermediates. I'm a 3D artist + Tech artist with a year or so worth of C++ programming experience and I'm loving the course so far. Very Pedagogical! Each lecture are in manageable lengths and the pace is perfect for me."
21 Jul 2022
"Amazing course"
20 Jul 2022
Victor Osornio
"An amazing journey! Thanks Gustavo, I really enjoyed your teaching style and how you cover the fundamentals in a clear and easy to follow way. Your course is one of the most engaging and polished I've taken."
14 Jul 2022

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