About Shader Graph Plus

This is a shrimple fork of shadergraph that is serving as my testbed of sorts . This may become obsolete in the future.

Major Changes

• Graph asset extension was changed from .shdrgrph to .shrph. ( Don't want you opening vanilla shadergraph files ).

• You can switch between lit & unlit shading models now. Do note that the ports on the material node that are unused in unlit mode are not greyed out yet.

• Nodes can have there own bundled hlsl functions. See Editor\ShaderGraphPlus\Nodes\Effects\Gerstner.cs as an example of this functionality being used.

• Post Processing Shader Support. (Might be a lil buggy with the preview window)

• Matrix Constants . ( float2x2, float3x3 & float4x4 )

• Gradient Node & Sample Gradient Node.

Custom Node Example

Below is an example of a custom node. Of which contains a bundled hlsl function. ( Cant make your own nodes within your editor project yet due to this : https://github.com/Facepunch/sbox-issues/issues/6284)

namespace Editor.ShaderGraphPlus.Nodes;



[Title( "Box Shape" ), Category( "Procedural" )]

public sealed class BoxShapeNode : ShaderNodePlus

{

	[Hide]

	public string BoxShape => @"

float BoxShape( float2 UV, float Width, float Height )

{

	float2 d = abs(UV * 2 - 1) - float2(Width, Height);

    d = 1 - d / fwidth(d);

	return saturate(min(d.x, d.y));

}

";



	[Title( "UV" )]

	[Input( typeof( Vector2 ) )]

	[Hide]

	public NodeInput Coords { get; set; }



	[Title( "Width" )]

	[Input( typeof( float ) )]

	[Hide]

	public NodeInput Width { get; set; }



	[Title( "Height" )]

	[Input( typeof( float ) )]

	[Hide]

	public NodeInput Height { get; set; }



	public float DefaultWidth { get; set; } = 0.5f;

	public float DefaultHeight { get; set; } = 0.5f;



	[Output( typeof( float ) )]

	[Hide]

	public NodeResult.Func Result => ( GraphCompiler compiler ) =>

	{

		var incoords = compiler.Result( Coords );



        // use defaults if no input is connected to either Width or Height.

		var width = compiler.ResultOrDefault( Width, DefaultWidth );

		var height = compiler.ResultOrDefault( Height, DefaultHeight );



		var coords = "";



        // Handle PostProcessing Shaders texture coords.

		if ( compiler.Graph.MaterialDomain is MaterialDomain.PostProcess )

		{

			coords = incoords.IsValid ? $"{incoords.Cast( 2 )}" : "CalculateViewportUv( i.vPositionSs.xy )";

		}

		else

		{

			coords = incoords.IsValid ? $"{incoords.Cast( 2 )}" : "i.vTextureCoords.xy";

		}



        // Avalible Result Types

        /*

			ResultType.Bool

			ResultType.Float

			ResultType.Vector2

			ResultType.Vector3

			ResultType.Color

			ResultType.Float2x2

			ResultType.Float3x3

			ResultType.Float4x4

			ResultType.Sampler

			ResultType.TextureObject

        */

		return new NodeResult( ResultType.Float , compiler.ResultFunction( BoxShape, args: $"{coords}, {width}, {height}" ) );

	};



}

Source

https://github.com/QuackCola/ShaderGraphPlus