Convert RenderTexture to Texture2D

Question

I need to save a RenderTexture object to a .png file that will then be used as a texture to wrap about a 3D object. My problem is right now I can\'t save a RenderTexture obj

Answer 1

Create new Texture2D, use RenderTexture.ReadPixels to read the pixels from RenderTexture into the new Texture2D. Finally, Call Texture2D.Apply(); to apply the changed pixels.

Texture2D toTexture2D(RenderTexture rTex)
{
    Texture2D tex = new Texture2D(512, 512, TextureFormat.RGB24, false);
    RenderTexture.active = rTex;
    tex.ReadPixels(new Rect(0, 0, rTex.width, rTex.height), 0, 0);
    tex.Apply();
    return tex;
}

Usage:

public RenderTexture tex;
Texture2D myTexture = toTexture2D(tex);

---

You can make it an extension method:

public static class ExtensionMethod
{
    public static Texture2D toTexture2D(this RenderTexture rTex)
    {
        Texture2D tex = new Texture2D(512, 512, TextureFormat.RGB24, false);
        RenderTexture.active = rTex;
        tex.ReadPixels(new Rect(0, 0, rTex.width, rTex.height), 0, 0);
        tex.Apply();
        return tex;
    }
}

Usage:

public RenderTexture tex;
Texture2D myTexture = tex.toTexture2D();