Graphics Tools/Text Mesh Pro shader generates crispy fonts in Text mesh Pro 3.2.0

[Maesla]

Describe the bug

Fonts are crispy using Text Mesh Pro 3.2.0 and shader Graphics Tools/Text Mesh Pro

To reproduce

Steps to reproduce the behavior:
Create a text with Text Mesh Pro and shader Graphics Tools/Text Mesh Pro in with Text Mesh Pro version 3.0.x (3.0.6 and 3.0.9 behaves in the same way). I used the font Selawik-Regular-MRTKIcons SDF
Upgrade Text Mesh Pro to 3.2.0
See how the text now is crispy

Expected behavior

The text is clear

Screenshots

Your setup (please complete the following information)

• Unity Version 2021.3.32
• Graphics Tools Version 0.7.1

Target platform (please complete the following information)

• HoloLens 2
• Standalone PC

Additional Context

In TMP 3.2.0, if I change the font shader from Graphics Tools/Text Mesh Pro to TextMeshPro/Mobile/Distance Field SSD, the text is clear again

[Cameron-Micka]

Thanks for reporting this Manuel Espino (@Maesla)! My guess is this PR regressed the behavior for 2021.

[Cameron-Micka]

Hi Manuel Espino (@Maesla) I was able to reproduce this and it boils down to this check not being perfect:

MixedReality-GraphicsTools-Unity/com.microsoft.mrtk.graphicstools.unity/Runtime/Shaders/GraphicsToolsTextMeshPro.shader

Line 220 in 7b8f715

#if UNITY_VERSION >= 202300 // Unity 6 (2023)+

I thought TMP 3.2+ required Unity 6+. But it looks like you can still use TMP 3.2+ in 2020-2021 as a pre-release package (I repro'ed with 3.2.0-pre.10).

I see a way to fix it, but it will require I reorganize the shader quite a bit. The question is how much do you need this fixed, or can you upgrade to Unity 6 or downgrade to Text Mesh Pro 3.0?

[Maesla]

Hi Cameron (@Cameron-Micka),

We upgraded TMP because we had a bug and because we needed some new functionality, but we'll try to downgrade again.

Thanks for taking a look

[Cameron-Micka]

Thank you Manuel Espino (@Maesla) for trying to downgrade - I'll keep this issue open so we can fix it in the future, and I'll let you know when it gets fixed.