I have a simple method that converts RenderTexture data into Texture2D
public static Texture2D RenderTextureToTexture2D(RenderTexture renderTexture, int width, int height,
TextureFormat textureFormat = TextureFormat.RGB24, bool mipChain = false) {
Texture2D tex = new Texture2D(width, height, textureFormat, mipChain);
RenderTexture.active = renderTexture;
tex.ReadPixels(new Rect(0, 0, renderTexture.width, renderTexture.height), 0, 0);
tex.Apply();
RenderTexture.active = null;
// Here I want some way to release memory occupied by tex
// I want to release tex here because i believe everytime this method executes tex is not getting garbage collected and stays in memory
// Only problem is I cannot release it before, and after returning, it is obvious I cannot do that.
return tex;
}
The above mentioned method is working exactly as intended. However, if I call this method multiple times, or in update it starts using so much memory
How can I avoid this problem?
Edit I cannot share the entire code but this is minimal code to reproduce the issue
[SerializeField] private RenderTexture renderTexture;
private Texture2D mTexture;
private void Start() {
mTexture = new Texture2D(renderTexture.width, renderTexture.height, TextureFormat.BGRA32, false);
}
private void Update() {
mTexture = TextureUtils.RenderTextureToTexture2D(renderTexture, renderTexture.width, renderTexture.height, TextureFormat.BGRA32);
// Some agora sdk stuff to share the mTexture over the network for screen sharing
}