Software rendering in 500 lines of bare C++
A technical guide explains how to build a software renderer from scratch using 500 lines of C++ without third-party libraries. The goal is to help students understand the underlying mechanics of 3D graphics APIs like OpenGL and Vulkan.
Why it matters
Understanding low-level graphics programming is essential for developers to write efficient applications and grasp how modern GPU-accelerated software functions.
In this series of articles, I aim to demonstrate how OpenGL, Vulkan, Metal, and DirectX work by writing a simplified clone from scratch. Surprisingly, many people struggle with the initial hurdle of learning a 3D graphics API. To help with this, I have prepared a short series of lectures, after which my students are able to produce quite capable renderers.
The task is as follows: using no third-party libraries (especially graphics-related ones), we will generate an image like this:
Warning: This is a training material that loosely follows the structure of modern 3D graphics libraries. It is a software renderer . I do not intend to show how to write GPU applications — I want to show how they work. I firmly believe that understanding this is essential for writing efficient applications using 3D libraries.
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