EditorGUIUtility.whiteTexture

Description

Get a white texture.

White texture in an Editor Window.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;

public class EditorGUITextures : EditorWindow
{
    Texture2D texture = null;
    static Texture2D invertedTexture;
    bool showInverted = false;

    [MenuItem("Examples/Texture Previewer")]
    static void Init()
    {
        EditorGUITextures window =
            EditorWindow.GetWindowWithRect<EditorGUITextures>(new Rect(0, 0, 410, 250));
        window.Show();
    }

    void OnGUI()
    {
        texture = (Texture2D)EditorGUI.ObjectField(new Rect(3, 3, 200, 50),
                "Add a Texture:",
                texture,
                typeof(Texture));


        if (GUI.Button(new Rect(250, 3, 100, 20), "Process Inverted"))
        {
            if (invertedTexture)
                DestroyImmediate(invertedTexture);

            //Copy the new texture
            invertedTexture = new Texture2D(texture.width,
                    texture.height,
                    texture.format,
                    (texture.mipmapCount != 0));

            for (int m = 0; m < texture.mipmapCount; m++)
                invertedTexture.SetPixels(texture.GetPixels(m), m);

            InvertColors();
            showInverted = true;
        }

        if (texture)
        {
            EditorGUI.LabelField(new Rect(25, 200, 100, 25), new GUIContent("Preview:"));
            EditorGUI.DrawPreviewTexture(new Rect(25, 70, 100, 100), texture);
            EditorGUI.LabelField(new Rect(150, 200, 100, 25), new GUIContent("Alpha:"));
            EditorGUI.DrawTextureAlpha(new Rect(150, 70, 100, 100), texture);
            EditorGUI.LabelField(new Rect(275, 200, 100, 25), new GUIContent("Inverted:"));

            if (showInverted)
            {
                EditorGUI.DrawPreviewTexture(new Rect(275, 70, 100, 100), invertedTexture);
            }

            if (GUI.Button(new Rect(3, position.height - 25, position.width - 6, 20), "Clear texture"))
            {
                texture = EditorGUIUtility.whiteTexture;
                showInverted = false;
            }
        }
        else
        {
            EditorGUI.PrefixLabel(
                new Rect(3, position.height - 25, position.width - 6, 20),
                0,
                new GUIContent("No texture found"));
        }
    }

    static void InvertColors()
    {
        for (int m = 0; m < invertedTexture.mipmapCount; m++)
        {
            Color[] c = invertedTexture.GetPixels(m);
            for (int i = 0; i < c.Length; i++)
            {
                c[i].r = 1 - c[i].r;
                c[i].g = 1 - c[i].g;
                c[i].b = 1 - c[i].b;
            }
            invertedTexture.SetPixels(c, m);
        }
        invertedTexture.Apply();
    }

    void OnInspectorUpdate()
    {
        this.Repaint();
    }
}