TextBlock may have faulty rendering in some cases

[bai-chi-xing]

The following is a video with errors.

20230818125901.mp4

code:

public class DebugTest : MonoBehaviour
{
    public TextBlock textBlock;

    public Button btn_0;
    public Button btn_1;


    private void Awake()
    {
        btn_0.OnClicked.AddListener(() =>
        {
            textBlock.Text = "测试用短文本";
        });
        btn_1.OnClicked.AddListener(() =>
        {
            textBlock.Text = "测试用非常长非常长非常长非常长非常长非常长的文本";
        });
    }
}

The unitypackage provided below requires dependencies on TextMeshPro and Nova 2.1.0. The Unity version used is 2021.3.16f1c1.

debug.zip

[dkonik]

It does seem like you've found a bug! We're still investigating the proper fix for this, but as a temporary workaround, you can add textInfo.meshInfo[i].ClearUnusedVertices(); before line 244 of TextBlock.cs, so that complete loop will look like:

for (int i = 0; i < textInfo.meshInfo.Length; i++)
{
    textInfo.meshInfo[i].ClearUnusedVertices();
    newQuadCount += textInfo.meshInfo[i].vertices.Length;
}

Note that this workaround will break certain rich text functionality (such as mark), but we'll follow up here when we have a proper fix.

[adgray1]

The fix for this has just been published in Nova v2.1.1!