Texture 'Font Texture' is not readable

Im trying to pull the texture from a Text Mesh object, to then perform some computer vision on it.

However, whenever I attempt to get the texture i got the message:

UnityException: Texture 'Font Texture' is not readable, the texture memory can not be accessed from scripts. You can make the texture readable in the Texture Import Settings.
TestFontGrab.SaveTextureToFile (UnityEngine.Texture2D texture, System.String fileName) (at Assets/Scripts/MyScripts/TestFontGrab.cs:19)
TestFontGrab.Start () (at Assets/Scripts/MyScripts/TestFontGrab.cs:14)

I've read on the internet that if you change the font to Unicode, and then create an Editable Copy and ticking the read/write box it should work. But im still getting the error even after doing this.

Im using

texture = (Texture2D)GetComponent<TextMesh>().font.material.mainTexture;

to try and get the texture.

Thanks,

Lewis

 

After creating the editable copy, did you switch everything over to use the new texture?

--Eric

 

I did not ...

Would I just drop the new texture file into the font on the text mesh?

 

Textures and fonts are two different things. You'd make a material with the font texture and use that along with the correct font.

--Eric

 

I don't quite understand how to then use the Texture as a font.. Would you be able to elaborate?

 

Did you make a material with the font texture (typically using the GUI/3D text shader) and use that along with the correct font?

--Eric

 

At the moment Im using a Text Mesh (As the game is 2D), am I not able to use Text Mesh's?

 

That's precisely what I'm talking about.

--Eric

 

Ahh, that does now grab the font texture. However, it grabs the entire font sheet, not just the individual letter?

 

Correct, all letters are combined into a single texture.

--Eric

 

I can see that, but it is possible to retrieve a single letters texture from the combined texture?

 

That's what the character rects in the font are for.

--Eric

 

How do you actually access the character Rects though? I've found how to access character Info, but no Rects.