Texture2D.EncodeToPNG 的 Unity 帮助页面有一个完整的示例,用于捕获和上传屏幕截图。
http://docs.unity3d.com/ScriptReference/Texture2D.EncodeToPNG.html
// Saves screenshot as PNG file.
using UnityEngine;
using System.Collections;
using System.IO;
public class PNGUploader : MonoBehaviour {
// Take a shot immediately
IEnumerator Start () {
yield return UploadPNG();
}
IEnumerator UploadPNG() {
// We should only read the screen buffer after rendering is complete
yield return new WaitForEndOfFrame();
// Create a texture the size of the screen, RGB24 format
int width = Screen.width;
int height = Screen.height;
Texture2D tex = new Texture2D(width, height, TextureFormat.RGB24, false);
// Read screen contents into the texture
tex.ReadPixels(new Rect(0, 0, width, height), 0, 0);
tex.Apply();
// Encode texture into PNG
byte[] bytes = tex.EncodeToPNG();
Object.Destroy(tex);
// For testing purposes, also write to a file in the project folder
// File.WriteAllBytes(Application.dataPath + "/../SavedScreen.png", bytes);
// Create a Web Form
WWWForm form = new WWWForm();
form.AddField("frameCount", Time.frameCount.ToString());
form.AddBinaryData("fileUpload",bytes);
// Upload to a cgi script
WWW w = new WWW("http://localhost/cgi-bin/env.cgi?post", form);
yield return w;
if (w.error != null) {
Debug.Log(w.error);
} else {
Debug.Log("Finished Uploading Screenshot");
}
}
}