Texture to texture2D以及texture2D像素反转

最新推荐文章于 2025-06-30 09:48:44 发布

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最新推荐文章于 2025-06-30 09:48:44 发布

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CC 4.0 BY-SA版权

文章标签：游戏人工智能

原文链接：http://www.cnblogs.com/llstart-new0201/p/8359013.html

本文介绍了一种在Unity中将渲染纹理保存为PNG图片的方法。通过使用RenderTexture和Graphics.Blit进行图像数据的复制，并利用Texture2D将像素数据读取出来，最后将这些数据编码成PNG格式并保存到文件。

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    private void SaveRenderTextureToPNG(Texture inputTex, string file)
    {
        RenderTexture temp = RenderTexture.GetTemporary(inputTex.width, inputTex.height, 0, RenderTextureFormat.ARGB32);
        Graphics.Blit(inputTex, temp);
        Texture2D tex2D = GetRTPixels(temp);
        RenderTexture.ReleaseTemporary(temp);
        File.WriteAllBytes(file, tex2D.EncodeToPNG());
    }

    private Texture2D GetRTPixels(RenderTexture rt)
    {
        RenderTexture currentActiveRT = RenderTexture.active;
        RenderTexture.active = rt;
        Texture2D tex = new Texture2D(rt.width, rt.height);
        tex.ReadPixels(new Rect(0, 0, tex.width, tex.height), 0, 0);
        RenderTexture.active = currentActiveRT;
        return tex;
    }

            Color[] colors = tex.GetPixels(capx, capy, capwidth, capheight);
            System.Array.Reverse(colors, 0, colors.Length);


            Texture2D t = new Texture2D(capwidth, capheight, TextureFormat.RGB24, true);
            //Debug.Log("Pixel size:" + capx + " " + capy + " " + capwidth + " " + capheight);
            //t.ReadPixels(new Rect(capx, capy, capwidth, capheight), 0, 0, false);

            //for (int i = 0; i < capwidth; i++)
            //{
            //    for(int j=0;j<capheight;j++)
            //    {
            //        Color temp = t.GetPixel(i, j);
            //        t.SetPixel(i,j,)
            //    }
            //}

            t.SetPixels(colors);
            t.Apply();