How to make gameobject match the source texture's size?

Questions & Answers
1

I have a gameobject with the standard mesh renderer/quad/collider etc and it’s using a texture to display an image. Is there a way for the object to match the source texture’s resolution or ratio at least?

Or is there an easier way to do this? I tried using a image component and sprite texture instead but it won’t show up.

2

Get the MeshRenderer and use the materials texture to find the height and width of the texture.
Once you have those you can divide height / width. That will tell you how much larger the texture height is compared to the width. For example a 256 by 512 texture will return 2, so you have a ratio of 2 : 1 (height : width). A 512 by 256 texture will return 0.5 which is 1 : 2. then you can just do something like y = x * ratio.

Transform quad; //assigned however you want

MeshRenderer mr = quad.GetComponent<MeshRenderer>();
Texture tex = mr.material.mainTexture;
float ratio = tex.height / tex.width;
float x = 1; //this will be the width of the quad so set it to whatever...
float y = x * ratio;
quad.localScale = new Vector3(x, y, 1);

I just wrote the code here and i didn’t check it so it could have errors.