84 lines
2.5 KiB
C#
84 lines
2.5 KiB
C#
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using UnityEngine;
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using UnityEngine.UI;
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using System.IO;
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public class ImageBlender : MonoBehaviour
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{
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[Header("绑定设置")]
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public Image imageA; // 底图
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public Image imageB; // 顶图
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public Shader blendShader;
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[Header("导出设置")]
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public string fileName = "Blended_Result";
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public string saveFolder = "Exports";
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void Start()
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{
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// 自动获取Shader（可选）
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if (!blendShader) blendShader = Shader.Find("Custom/SimpleBlend");
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}
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[ContextMenu("执行混合导出")]
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public void ExecuteBlendExport()
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{
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// 获取原始纹理
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Texture2D texA = GetImageTexture(imageA);
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Texture2D texB = GetImageTexture(imageB);
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// 创建临时RenderTexture
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RenderTexture rt = new RenderTexture(texA.width, texA.height, 24);
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// 创建混合材质
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Material blendMat = new Material(blendShader);
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blendMat.SetTexture("_MainTex", texA);
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blendMat.SetTexture("_BlendTex", texB);
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// 执行混合
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Graphics.Blit(null, rt, blendMat);
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// 转换为Texture2D
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Texture2D output = RenderTextureToTexture2D(rt);
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// 保存文件
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SaveTextureAsPNG(output);
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// 清理资源
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DestroyImmediate(rt);
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DestroyImmediate(output);
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}
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Texture2D GetImageTexture(Image image)
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{
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// 从Image组件获取纹理
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Sprite sprite = image.sprite;
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Texture2D originTex = sprite.texture;
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// 创建可读写副本
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Texture2D copyTex = new Texture2D(originTex.width, originTex.height, originTex.format, false);
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copyTex.SetPixels(originTex.GetPixels());
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copyTex.Apply();
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return copyTex;
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}
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Texture2D RenderTextureToTexture2D(RenderTexture rt)
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{
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RenderTexture.active = rt;
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Texture2D tex = new Texture2D(rt.width, rt.height, TextureFormat.ARGB32, false);
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tex.ReadPixels(new Rect(0, 0, rt.width, rt.height), 0, 0);
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tex.Apply();
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RenderTexture.active = null;
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return tex;
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}
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void SaveTextureAsPNG(Texture2D tex)
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{
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byte[] bytes = tex.EncodeToPNG();
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string dirPath = Path.Combine(Application.streamingAssetsPath, saveFolder);
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if (!Directory.Exists(dirPath)) Directory.CreateDirectory(dirPath);
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string filePath = Path.Combine(dirPath, fileName + ".png");
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File.WriteAllBytes(filePath, bytes);
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Debug.Log($"导出成功：{filePath}");
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}
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}
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