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Unity - Scripting API: Shader.keywordSpace

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The local keyword space of this shader.

using UnityEngine;
using UnityEngine.Rendering;

// This example iterates over the local shader keywords in the local
// keyword space for a graphics shader. It determines whether each
// keyword is overridden by a global shader keyword and prints its
// state.
public class KeywordExample : MonoBehaviour
{
    public Material material;

    void Start()
    {
        CheckShaderKeywordState();
    }

    void CheckShaderKeywordState()
    {
        // Get the instance of the Shader class that the material uses
        Shader shader = material.shader;

        // Get all the local keywords that affect the Shader
        LocalKeywordSpace keywordSpace = shader.keywordSpace;

        // Iterate over the local keywords
        foreach (LocalKeyword localKeyword in keywordSpace.keywords)
        {
            // If the local keyword is overridable,
            // and a global keyword with the same name exists and is enabled,
            // then Unity uses the global keyword state
            if (localKeyword.isOverridable && Shader.IsKeywordEnabled(localKeyword.name))
            {
                Debug.Log("Local keyword with name of " + localKeyword.name + " is overridden by a global keyword, and is enabled");
            }
            // Otherwise, Unity uses the local keyword state
            else
            {
                string state = material.IsKeywordEnabled(localKeyword) ? "enabled" : "disabled";
                Debug.Log("Local keyword with name of " + localKeyword.name + " is " + state);
            }
        }
    }
}

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