How to clear a render texture to transparent color?

 How to do :

In Unity, you can clear a render texture to transparent by using the ClearRenderTarget method and passing in Color.clear as the clear color. Here is an example of how you could do this:

// Get a reference to the render texture

RenderTexture renderTexture = GetComponent<RenderTexture>();

// Clear the render texture to transparent

Graphics.ClearRenderTarget(renderTexture, Color.clear);

In the code above, we first get a reference to the render texture that we want to clear. Then, we call the ClearRenderTarget method and pass in the render texture and the clear color (Color.clear) as arguments. This will clear the render texture to transparent.

Note that you can also specify a different clear color by using a different Color value instead of Color.clear. For example, to clear the render texture to black, you could use the following code:

Graphics.ClearRenderTarget(renderTexture, Color.black);