TextMesh Pro The character used for Underline and Strikethrough is not available in font asset

Hello,

I recently updated Unity and now get these warnings printed quite frequently.

I don't understand why the new version of TMP requires a font to have these 2 characters. I have many fonts in my project and very few of them ever use these characters. Therefore they are not included in the font. My thought process is that I would rather either save texture space or use that texture space for higher res versions of characters that actually get used.

I can see that TMP_Settings.warningsDisabled is a way to avoid this particular warning. However, I don't want to miss out on real warnings just to disable this particular output.

I don't understand why these specific characters are needed.

Is it so important that this is an error and I should add these characters?

Thank you
Lester

 

Shouldn't it only print the warning if the font tries to display one of those characters then?

These fonts are never displaying those characters. As far as I understand it; there is nothing to actually be warning me about. Right?

 

@Stephan_B It would be nice, if you could rework this. If using Font Awesome Pro, you don't need those special characters, but you still get the warning all time.

 

It would be nice to have it on a per font basis then, instead of disabling it for all fonts. Would that be possible?

 

This warning message would be much more useful if it told us what the required character was, so we could add it if we want it. I've tried underscore and em-dash, but both still don't fix it.

 

Ok, apparently you need to restart Unity for the font to recognize the underscore character after you've added it. The font doesn't re-cache it when you re-build the font.

 

In version 2020.3, you can disable TMP warnings following these steps:
- Window->Text Mesh Pro->Import TMP Essential Resources
- Import (button)
- Select TMP Settings in Asset > TextMesh Pro -> Resources (folder)
- Under the header Dynamic Font System Settings select "Disable warnings"

 

Actually disabling the warning in the TMP settings does nothing for me, it still displays it.

 

The instructions you provided didn't seem to work for me in Unity 2021.3
I was able to find it by going to project settings -> TMP -> check the box to disable warnings. This worked.

 

I am getting this. But I think its not searching the full fallback structure.
My default font asset is empty. It does not contain any atlas. It just points to all the fallbacks to be used.

Code (CSharp):

1.  
2.         protected void GetUnderlineSpecialCharacter(TMP_FontAsset fontAsset)
3.         {
4.             bool isUsingAlternativeTypeface;
5.             // Search primary font asset for underline character while ignoring font style and weight as these do not affect the underline character.
6.             TMP_Character character = TMP_FontAssetUtilities.GetCharacterFromFontAsset(0x5F, fontAsset, false, FontStyles.Normal, FontWeight.Regular, out isUsingAlternativeTypeface);
7.             /*
8.             if (m_Underline.character == null)
9.             {
10.                 // Search primary fallback list
11.                 if (fontAsset.m_FallbackFontAssetTable != null && fontAsset.m_FallbackFontAssetTable.Count > 0)
12.                     m_Underline.character = TMP_FontAssetUtilities.GetCharacterFromFontAssets(0x5F, fontAsset.m_FallbackFontAssetTable, true, m_FontStyleInternal, m_FontWeightInternal, out isUsingAlternativeTypeface, out tempFontAsset);
13.             }
14.             // Search TMP Settings general fallback list
15.             if (m_Underline.character == null)
16.             {
17.                 if (TMP_Settings.fallbackFontAssets != null && TMP_Settings.fallbackFontAssets.Count > 0)
18.                     m_Underline.character = TMP_FontAssetUtilities.GetCharacterFromFontAssets(0x5F, TMP_Settings.fallbackFontAssets, true, m_FontStyleInternal, m_FontWeightInternal, out isUsingAlternativeTypeface, out tempFontAsset);
19.             }
20.             // Search TMP Settings' default font asset
21.             if (m_Underline.character == null)
22.             {
23.                 if (TMP_Settings.defaultFontAsset != null)
24.                     m_Underline.character = TMP_FontAssetUtilities.GetCharacterFromFontAsset(0x5F, TMP_Settings.defaultFontAsset, true, m_FontStyleInternal, m_FontWeightInternal, out isUsingAlternativeTypeface, out tempFontAsset);
25.             }
26.             */
27.             if (character != null)
28.             {
29.                 m_Underline = new SpecialCharacter(character, 0);
30.             }
31.             else
32.             {
33.                 if (!TMP_Settings.warningsDisabled)
34.                     Debug.LogWarning("The character used for Underline is not available in font asset [" + fontAsset.name + "].", this);
35.             }
36.         }
37.  
38.  

With includeFallbacks set to false.
Is there a reason for this really? To not search for these in the fallbacks?

Actually looks like the code is already there to do it. just commented out?
This code is old and does not compile, but it seems GetEllipsisSpecialCharacter does exactly that already. @Stephan_B Can you see about updating this in the get underline special character?

So I don't have to maintain a custom package.
Cheers