How do I create an empty struct for Texture2D without throwing Unity into a river?

Unity Engine
1

I have byte series that contain data for a structure, I’m planning to read from these bytes to recreate an image. Problem is that I get following error:

JsonSerializationException: Unable to find a constructor to use for type UnityEngine.Texture2D.

I did what I always do, go look it up, aaaaaand.

1st: c# - JsonSerializationException: Unable to find a constructor to use for type ... Path 'data', line 1, position 83 - Stack Overflow
No answer.

2nd: JSON .NET for Unity page-4
It’s because the JSON was invalid.

3rd: c# - "Newtonsoft.Json.JsonSerializationException unable to find constructor to use for types" error when deserializing class - Stack Overflow
Finally an answer. I get a mention of empty constructor, post below tells me how to do it, but I don’t know which method/class to place it on, further more I’m afraid that if I put something inside Texture2D’s class that it will permanently modify every Texture2D’s behavior and I will get errors/complications that I wouldn’t otherwise get.

So the question is, how do I give Texture2D an “empty construct” without it snapping on me? Or otherwise how do I turn binary data into Texture2D data?

2

Not sure if I understand your issue here, but usually you create a Texture2D with correct dimensions and texture format, then use SetPixel/SetPixels/SetPixels32 to insert the image data to the texture. Just get your binary data to Unity first, then write the data content to the texture. Wouldn’t this work for you?

3

That’s exactly what I’m trying to do and this fails:

return JsonConvert.DeserializeObject<T>(data);
Where T is Texture2D.
Where data is the data.

And then:

        Texture2D t2d = new Texture2D(mapData.mapRenderMeta.width, mapData.mapRenderMeta.height);
        t2d.LoadImage(mapData.mapRenderData);

But that’s after, the StackTrace points directly to the first piece of code.

4

Note however that the mapRenderData doesn’t look pure binary to me, it gives me impresson of base64:

iVBORw0KGgoAAAANSUhEUgAAH6AAAB+gCAYAAAAnV7sHAAAgAElEQVR4AezdwQ0AIAwDMWBo1geJJbiHO0Hk9J859jnDESBAgAABAgQIECBAgAABAgQIECBAgAABAgQIECBAgAABAgQIECBAgAABAgQIECBAgAABAgQIECBAgAABAgQIECBAgAABAgQIECBAgAABAgQIECBAgAABAgQIECBAgAABAgQIECBAgAABAgQIECBAgAABAgQIECBAgAABAgQIECBAgAABAgQIECBAgMB3gfU9gQAECBAgQIAAAQIECBAgQIAAA

This is just a sample. I encoded it using:

byte[] bytes = File.ReadAllBytes($"{_demoDataDir_}/demomap.png");
        Texture2D trueData = new Texture2D(8096, 8096);
        trueData.LoadImage(bytes);

        ND nd = new ND
        {
            mapRenderData = trueData.EncodeToPNG(),
            mapRenderMeta = trueData,
            mapSize = 130
        };

For a reason its unnecessary to explain, I take a working image, then write its binaries down in a file, then want to read that file back, which now fails.

if you read this post, I wrote another one above it as well