Shaders

General

• https://en.wikipedia.org/wiki/Shading_language - a graphics programming language adapted to programming shader effects (characterizing surfaces, volumes, and objects). Such language forms usually consist of special data types, like "vector", "matrix", "color" and "normal". Due to the variety of target markets for 3D computer graphics, different shading languages have been developed.

• The Book of Shaders - by Patricio Gonzalez Vivo and Jen Lowe. This is a gentle step-by-step guide through the abstract and complex universe of Fragment Shaders.
  • https://github.com/patriciogonzalezvivo/thebookofshaders

• Inigo Quilez - fractals, computer graphics, mathematics, shaders, demoscene and more

• Interactive Shader Format - a file format used to describe GLSL shaders for use in interactive applications. It can be used to create image filters or generative video sources. Learn more about ISF, check out the spec or check out the examples below.
  • https://github.com/jcelerier/libisf

• https://github.com/Gargaj/Bonzomatic - a live-coding tool, where you can write a 2D fragment/pixel shader while it is running in the background.

Shaders

• https://github.com/mckennapsean/wood-shader - based on the original paper (by Marschner et al.) which established a new sub-surface reflection component to the bidirectional reflectance distribution function (BRDF) that creates a sub-surface highlight distinct to the appearance of actual, finished wood. The key features of this process include identifying the direction/angle of the sub-surface wooden fibers, refracating and reflecting the incoming light ray along this angled wooden fiber, and producing a Gaussian-spread along a cone in the direction of this angled reflection ray. All of these features were coded and ported into GLSL. A sample, rendered image of tiger wood is presented below.

• https://github.com/kbinani/colormap-shaders - A collection of shaders to draw color maps.

• Flat Surface Shader
  • https://github.com/wagerfield/flat-surface-shader

• https://github.com/lettier/3d-game-shaders-for-beginners - video_game A step-by-step guide on how to implement SSAO, depth of field, lighting, normal mapping, and more for your 3D game. [1]

• Dissecting a Shader Quine - [2]

• GL Transitions - The open collection of GL Transitions
  • https://github.com/gl-transitions/gl-transitions

• https://github.com/kosua20/opengl-skydome - A fragment-shader skydome implementation

Tools

ShaderTool

• https://github.com/Chabloom/ShaderTool - a source-level shader translation tool for translating between GLSL, HLSL and MSL (Metal Shading Language).

• https://www.shadertoy.com
  • Wolfenstein's original rendering engine as 450 line shader with no external data [3]

sre_glsl_editor

• https://github.com/mortennobel/sre_glsl_editor - allows you to play with shaders without having to set up everything in OpenGL. The editor is build using SimpleRenderEngine

gpuc

• https://github.com/garettbass/gpuc - A header-only C-like shading language compiler that writes Metal, HLSL, GLSL

gpuc

• Shdr - an online GLSL (ESSL) shader editor, viewer and validator written in CoffeeScript/WebGL that I decided to code while working on HexGL. Indeed, I've been looking for a tool to help me quickly iterate over shader development and didn't find any that would fit my needs.
  • http://bkcore.com/blog/3d/shdr-online-glsl-shader-editor-viewer-validator.html [4]

SHADERed

• SHADERed - free and open source shader editor - an IDE that makes developing advanced shaders easier. With this tool, you are not limited to vertex and pixel shaders - your projects can also use compute and geometry shaders.SHADERed also comes with a built-in shader debugger (check out the ShaderDebugger project). The debugger currently only supports pixel and vertex shaders but the support for geometry and compute shaders is coming soon.Besides those two prominent features, SHADERed also supports: render textures, render states (blend, stencil, etc...), buffers, 3D & 2D textures, cubemaps, instancing, 3D models & geometry, live preview, plugin API, etc...
  • https://github.com/dfranx/SHADERed

GLSL Sandbox Gallery

• GLSL Sandbox Gallery - Online live editor for fragment shaders.
  • https://github.com/mrdoob/glsl-sandbox

Shadertweak

• https://github.com/warrenm/Shadertweak - an iPad app that allows you to rapidly prototype fragment shaders in the Metal shading language.

PixelSpirit

• PixelSpirit - Each Pixel Spirit card presents a visual element together with the GLSL shader code that generates it. Ultimately, these elements can be reused and combined to compose an infinite visual language. This deck is a tool for learning, a library, and an oracle.The cards are ordered as an unfolding continuum that goes from simplicity to complexity, from darkness to light, so they can be learned and memorized easily. Through this progression, the cards present new functions, creating a library of functions that can be reused and combined like a portable book of spells. Within the 50 cards of this deck you will find the 22 major arcana, the ancestral archetypes of the traditional Tarot deck: the wisdom of these powerful cards will guide you.
  • https://github.com/patriciogonzalezvivo/PixelSpiritDeck

CrossShader

• https://alain.xyz/libraries/crossshader - A tool for cross compiling shaders. Convert between GLSL, HLSL, Metal Shader Language, or older versions of GLSL.
  • https://github.com/alaingalvan/CrossShader

glslViewer

• glslViewer - a flexible console-base OpenGL Sandbox to display 2D/3D GLSL shaders without the need of an UI. You can definitely make your own UI or wrapper using the Python Module (include) or any other tool that communicates back/forth with glslViewer thought the standard POSIX console In/Out or OSC.GlslViewer support both 2D shaders and/or 3D shaders when a geometry (PLY, OBJ or GLTF) is provided.
  • https://github.com/patriciogonzalezvivo/glslViewer

tosort

• https://shaderoo.org

• https://github.com/dancrn/shade - a quick-and-dirty glsl prototyping tool. it's like shader-toy, but with basically no features of shader-toy. but you can run it off-line, and not in a browser. it has only one dependency - SDL2. this is not intended to be a standalone tool per se, but rather just something that you can easily modify (and extend, if required) to prototype a shader. [5]

• https://github.com/polymonster/pmfx-shader - Cross platform shader system targetting HLSL, GLSL, Metal and SPIR-V. Offline compilation, reflection, metadata +so much more.

• https://github.com/podgorskiy/ShaderBoiler - Aimed to eliminate preprocessor hell in shaders and kernels.

• https://github.com/radixzz/awesome-glsl - sparkler Compilation of the best resources to learn programming OpenGL Shaders

• https://github.com/KhronosGroup/glslang - Khronos-reference front end for GLSL/ESSL, partial front end for HLSL, and a SPIR-V generator.