ImageConversion.EncodeNativeArrayToJPG

Parameters

Description

Encodes this native array into JPG format.

This function returns a NativeArray<byte> which is the JPG data. Write this data to disk to get the data in the JPG file format.

The encoded JPG data will have no alpha channel, and for single-channel red textures ( R8, R16, RFloat and RHalf ) the encoded JPG data will be in 8-bit grayscale.

The native array that this function returns is allocated with the persistent allocator, so this function should only be called from the main thread.

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

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

    IEnumerator SaveScreenJPG()
    {
        // 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 JPG format
        NativeArray<byte> imageBytes = new NativeArray<byte>(tex.GetRawTextureData(), Allocator.Temp);
        var bytes = ImageConversion.EncodeNativeArrayToJPG(imageBytes, 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.jpg", bytes.ToArray());
    }
}

Additional resources: EncodeToJPG, EncodeArrayToJPG, EncodeNativeArrayToPNG, EncodeNativeArrayToTGA, EncodeNativeArrayToEXR.