WaitForEndOfFrame

説明

スクリーン上のレンダリングが完了するまで待ちます。

ディスプレイをテクスチャに読み込み、画像イメージファイルとしてエンコードして（ Texture2D.ReadPixels や Texture2D.EncodeToPNG ）、どこかに送信するために使用できます。

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    IEnumerator Example() {
        yield return new WaitForEndOfFrame();
    }
}

他の例:

using System.IO;
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    // Take a shot immediately
    IEnumerator Start() {
        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();
        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)
            print(w.error);
        else
            print("Finished Uploading Screenshot");
    }
}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    // A script that shows destination alpha channel in the game view.

    Material mat;

    void CreateMaterial ()
    {
        // Unity has a built-in shader that is useful for drawing
        // simple colored things. In this case, we just want to use
        // a blend mode that inverts destination colors.			
        var shader = Shader.Find ("Hidden/Internal-Colored");
        mat = new Material (shader);
        mat.hideFlags = HideFlags.HideAndDontSave;
        // Set blend mode to show destination alpha channel.
        mat.SetInt ("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.DstAlpha);
        mat.SetInt ("_DstBlend", (int)UnityEngine.Rendering.BlendMode.Zero);
        // Turn off backface culling, depth writes, depth test.
        mat.SetInt ("_Cull", (int)UnityEngine.Rendering.CullMode.Off);
        mat.SetInt ("_ZWrite", 0);
        mat.SetInt ("_ZTest", (int)UnityEngine.Rendering.CompareFunction.Always);
    }


    public IEnumerator Start ()
    {
        CreateMaterial ();
        while (true)
        {
            // Wait until all rendering + UI is done.
            yield return new WaitForEndOfFrame ();
            // Draw a quad that shows alpha channel.
            GL.PushMatrix ();
            GL.LoadOrtho ();
            mat.SetPass (0);
            GL.Begin (GL.QUADS);
            GL.Vertex3 (0, 0, 0);
            GL.Vertex3 (1, 0, 0);
            GL.Vertex3 (1, 1, 0);
            GL.Vertex3 (0, 1, 0);
            GL.End ();
            GL.PopMatrix ();
        }
    }

}

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