ImageConversion.EncodeArrayToPNG

Parameters

Description

Encodes this array into PNG format.

This function returns a byte array which is the PNG file data. You can store the encoded data as a file or send it over the network without further processing.

The encoded PNG data will contain alpha channel for RGBA32, ARGB32 textures, and no alpha channel for RGB24 textures. For single-channel red textures ( R8, R16, RFloat and RHalf ), the encoded PNG data will be in grayscale. PNG data will not contain gamma correction or color profile information.

This method is thread safe.

// Saves screenshot as PNG file.
using System.Collections;
using System.IO;
using UnityEngine;

public class PNGScreenSaver : MonoBehaviour
{
    // Take a shot immediately
    IEnumerator Start()
    {
        yield return SaveScreenPNG();
    }

    IEnumerator SaveScreenPNG()
    {
        // Read the screen buffer after rendering is complete
        yield return new WaitForEndOfFrame();

        // Create a texture in RGB24 format the size of the screen
        int width = Screen.width;
        int height = Screen.height;
        Texture2D tex = new Texture2D(width, height, TextureFormat.RGB24, false);

        // Read the screen contents into the texture
        tex.ReadPixels(new Rect(0, 0, width, height), 0, 0);
        tex.Apply();

        // Encode the bytes in PNG format
        byte[] bytes = ImageConversion.EncodeArrayToPNG(tex.GetRawTextureData(), tex.graphicsFormat, (uint)width, (uint)height);
        Object.Destroy(tex);

        // Write the returned byte array to a file in the project folder
        File.WriteAllBytes(Application.dataPath + "/../SavedScreen.png", bytes);
    }
}

Additional resources: EncodeToPNG, EncodeNativeArrayToPNG, EncodeArrayToJPG, EncodeArrayToTGA, EncodeArrayToEXR.