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What to learn to be a graphics programmer
I get asked fairly often what people need to know to be hireable as a graphics programmer. I figured it was time to make a page to link instead of re-typing it each time. We are in a strange time w…
Alan Wolfe
Programming, Graphics, Gamedev, Exotic Computation, Audio Synthesis
- Popular posts
- 12
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Visit blog.demofox.org → RSS feedOn Hacker News Jun 2016 – Jul 2026
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Derivatives, Gradients, Jacobians and Hessians
This article explains how these four things fit together and shows some examples of what they are used for. Derivatives Derivatives are the most fundamental concept in calculus. If you have a funct…
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How to Make Your Own Spooky Magic Eye Pictures (Autostereograms)
The simple standalone C++ code that goes with this post and makes autostereograms, can be found at The 1990s! They felt like a wasteland of culture at the time, but looking back, there was hyper co…
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Why can’t you design noise in frequency space?
The python code that goes along with this blog post can be found at To evaluate the quality of a blue noise texture, you can analyze it in frequency space by taking a discrete Fourier transform. Wh…
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Granular Audio Synthesis
If you want to make a sound shorter, you can play it faster. Doing this also makes it higher pitch unfortunately. If you want to make a sound longer, you can play it more slowly. This also makes it…
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Synthesizing a Plucked String Sound with the Karplus-Strong Algorithm
If you are looking to synthesize the sound of a plucked string, there is an amazingly simple algorithm for doing so called the Karplus-Strong Algorithm. Give it a listen: KarplusStrong.wav Here it …
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Demystifying Floating Point Precision
Floating point numbers have limited precision. If you are a game programmer, you have likely encountered bugs where things start breaking after too much time has elapsed, or after something has mov…
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Casual Shadertoy Path Tracing 1: Basic Camera, Diffuse, Emissive
Posts in this series: Basic Camera, Diffuse, Emissive Image Improvement and Glossy Reflections Fresnel, Rough Refraction & Absorption, Orbit Camera Below is a screenshot of the shadertoy that g…
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When random numbers are too random: Low discrepancy sequences (2017)
Random numbers can be useful in graphics and game development, but they have a pesky and sometimes undesirable habit of clumping together. This is a problem in path tracing and monte carlo integrat…
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Dissecting "Tiny Clouds" shadertoy (2017)
There is an amazing shadertoy called “Tiny Clouds” by stubbe (twitter: @Stubbesaurus) which flies you through nearly photorealistic clouds in only 10 lines of code / 280 characters (2 o…
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Calculating the Distance Between Points in Wrap Around (Toroidal) Space
Let’s say you are trying to find the distance between two points in 2D, but that these points are in a universe that “wraps around” like old video games – leaving the screen…
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Fractional Factorial Experiment Design: There Are Too Many Experiments to Do
Have you ever found yourself in a situation where you had a bunch of parameters to tune for a better result, but there were just too many to exhaustively search all possibilities? I recently saw a …