ShaderLab

ShaderLab is a programming language created in 2000.

#702on PLDB	23Years Old	200Users
0Books	0Papers	59kRepos

There are at least 59,455 ShaderLab repos on GitHub
file extensions for ShaderLab include shader
The Google BigQuery Public Dataset GitHub snapshot shows 1k users using ShaderLab in 1k repos on GitHub
GitHub supports syntax highlighting for ShaderLab
Read more about ShaderLab on the web: 1.
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Example from Linguist:

// From https://github.com/Unity-Technologies/PostProcessing,
// licensed under MIT licence.

Shader "Hidden/Post FX/Depth Of Field"
{
    Properties
    {
        _MainTex ("", 2D) = "black"
    }

    CGINCLUDE
        #pragma exclude_renderers d3d11_9x
        #pragma target 3.0
    ENDCG

    SubShader
    {
        Cull Off ZWrite Off ZTest Always

        // (0) Downsampling, prefiltering & CoC
        Pass
        {
            CGPROGRAM
                #pragma multi_compile __ UNITY_COLORSPACE_GAMMA
                #pragma vertex VertDOF
                #pragma fragment FragPrefilter
                #include "DepthOfField.cginc"
            ENDCG
        }

        // (1) Pass 0 + temporal antialiasing
        Pass
        {
            CGPROGRAM
                #pragma vertex VertDOF
                #pragma fragment FragPrefilter
                #define PREFILTER_TAA
                #include "DepthOfField.cginc"
            ENDCG
        }

        // (2-5) Bokeh filter with disk-shaped kernels
        Pass
        {
            CGPROGRAM
                #pragma vertex VertDOF
                #pragma fragment FragBlur
                #define KERNEL_SMALL
                #include "DepthOfField.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
                #pragma vertex VertDOF
                #pragma fragment FragBlur
                #define KERNEL_MEDIUM
                #include "DepthOfField.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
                #pragma vertex VertDOF
                #pragma fragment FragBlur
                #define KERNEL_LARGE
                #include "DepthOfField.cginc"
            ENDCG
        }

        Pass
        {
            CGPROGRAM
                #pragma vertex VertDOF
                #pragma fragment FragBlur
                #define KERNEL_VERYLARGE
                #include "DepthOfField.cginc"
            ENDCG
        }

        // (6) Postfilter blur
        Pass
        {
            CGPROGRAM
                #pragma vertex VertDOF
                #pragma fragment FragPostBlur
                #include "DepthOfField.cginc"
            ENDCG
        }
    }

    FallBack Off
}

Feature	Supported	Token	Example
Comments	✓		// A comment
Line Comments	✓	//	// A comment
Semantic Indentation	X

ShaderLab - Programming language

Language features