Rendering text memory is increasing

[ninki51]

Checklist

• I have searched the issue tracker for open issues that relate to the same problem, before opening a new one.
• This issue only relates to a single bug. I will open new issues for any other problems.

Describe the bug

Rendering text memory increases until the memory is full

How to reproduce

1 running

Screenshots

No response

Example code

a := app.New()
a.Settings().SetTheme(&myTheme{})
w := a.NewWindow("test window")
w.Resize(fyne.NewSize(640, 320))
loop = 0
numStr := binding.NewString()
numLabel = widget.NewLabelWithData(numStr)
w.SetContent(container.NewVBox(
		numLabel,
		widget.NewButton("start", func() {
			loop = 1
		}),
		widget.NewButton("stop", func() {
			loop = 0
		}),
))
cnt := 0
for i:=0;i<10;i++ {
      go func() {
                  if loop == 0 {
			time.Sleep(time.Millisecond * 1000)
			continue
		  }
                  numStr.Set(fmt.Sprintf("counter:%d", cnt))
                  mutex.Lock()
		  cnt++
                  mutex.Unlock()
                  time.Sleep(time.Millisecond * 10)
      }
}
w.ShowAndRun()

Fyne version

2

Go compiler version

1.19

Operating system

Windows

Operating system version

windows 10

Additional Information

go version 1.19

[andydotxyz]

I think this is a duplicate of #2969, though the example code is helpful.
The texture cache is perhaps too long in timing out - after 5 minutes (IIRC) it should start freeing up this memory, but I guess your demo crashes before that?

[ninki51]

I think this is a duplicate of #2969, though the example code is helpful. The texture cache is perhaps too long in timing out - after 5 minutes (IIRC) it should start freeing up this memory, but I guess your demo crashes before that?

The program will eventually crash
How to free this memory？

[andydotxyz]

It should be freed automatically - no developer action to be taken.
The issue does need to be resolved internally, but I do think it's the same root cause as #2969.
Lots of new text is either not hitting the cache, or it is not invalidating it after a short period of time...