Welcome to the Library of Shaders

The Library of Shaders is an open-source project that intends to release copyright and license free examples and explanations of miscellaneous shader effects, in order to empower developers to learn and develop shader effects themselves.

All shader code here is written in valid GLSL or OpenGL Shading Language.

Variables

We define a few variables that match the ShaderToy environment for ease of testing, but they can be easily adapted if you use another shader language (e.g. Godot's shader language) as needed.

// ShaderToy uniforms
uniform vec3      iResolution;           // viewport resolution (in pixels)
uniform float     iTime;                 // shader playback time (in seconds)
uniform float     iTimeDelta;            // render time (in seconds)
uniform float     iFrameRate;            // shader frame rate
uniform int       iFrame;                // shader playback frame
uniform float     iChannelTime[4];       // channel playback time (in seconds)
uniform vec3      iChannelResolution[4]; // channel resolution (in pixels)
uniform vec4      iMouse;                // mouse pixel coords. xy: current (if MLB down), zw: click
uniform samplerXX iChannel0..3;          // input channel. XX = 2D/Cube
uniform vec4      iDate;                 // (year, month, day, time in seconds)

If ShaderToy does not have a uniform for a certain thing that the shader requires, it will be explained in the article, and the uniforms will still follow the naming convention for ShaderToy. An example of this is vertex shaders. Because ShaderToy is mainly a playground for fragment shaders, there's nothing like uniform mat4 iModel;. However, we still have a section for vertex shaders, they just won't be able to run in the ShaderToy environment.

Articles will explain any uniforms not available in ShaderToy.

Contributing

All contributions are welcomed, and the contribution guide can be viewed on the GitHub repository. This library is built by developers for developers, and we appreciate everyone's help.

We strive to follow the principals of the 5 Wikipedian Pillars.

This entire library, and all work inside of it, is licensed under Creative Commons Zero. You can read the full text here.