Standard Shader

Add a Gradient Property to Standard Shader

The gradient property is a Texture2D. This means that you need to add a Texture2D property to your shader.

1. Add a Texture2D property to your shader.

2. You must include "GradientTexture" anywhere in the reference name (letter case doesn't matter).

3. Add the [GradientGUI] attribute flag.

Shader "GPFS/Demo/Sample"
{
    Properties
    {
        [GradientGUI] _Gradient_gradienttexture ("Gradient", 2D) = "white" {}
    }
    SubShader
    {
        ...
    }
    FallBack "Diffuse"
}

1. The package includes a helper method to sample the gradient from the Texture2D property. Make sure to include; #include "Assets/Gradient Property for Shader/Assets/Sample Gradient.hlsl"

2. Now, you can use the float4 SampleGradient(sampler2D gradient, float t) method to sample the graident at point t (clamped 0-1).

Shader "GPFS/Demo/Sample"
{
    Properties
    {
        [GradientGUI] _Gradient_gradienttexture ("Gradient", 2D) = "white" {}
    }
    SubShader
    {
        Tags { "RenderType"="Opaque" }
        LOD 200

        CGPROGRAM
        #pragma surface surf Standard fullforwardshadows
        #pragma target 3.0

        #include "Assets/Gradient Property for Shader/Assets/Sample Gradient.hlsl"

        sampler2D _Gradient_gradienttexture;

        struct Input
        {
            float2 uv_Gradient_gradienttexture;
        };

        void surf (Input IN, inout SurfaceOutputStandard o)
        {
            fixed4 c = SampleGradient(_Gradient_gradienttexture, IN.uv_Gradient_gradienttexture.x);
            o.Albedo = c.rgb;
            o.Alpha = c.a;
        }
        ENDCG
    }
    FallBack "Diffuse"
}