Hello,

I've seen this several times now with different fractals, and I don't know what causes it, but sometimes multi-layer fractals are offset. This problem seems to go away when activating anti-aliasing in the working window. Here's a screenshot:
64ecf0de96fda.png

It seems to be always exactly 1 pixel along the y-axis of the monitor, no matter the rotation of the fractal. And it also remains 1 pixel while using shift + mous drag to zoom, here's an screenshot while doing that, you can see the offset at the border between the enlarged pixels:
64ecf23c746d0.png

Here's the fractal:

Copy2Of11 {
::ky4lMhn2dLZTutNMQU49Gw3BCtKZRk5/SuFcRSRRRBKQ7NIgWiSiIUkqk0tx3+OSO2RLKKSX
  2KoFCj4bePOzXXU3k1u3tdDCltZnRV8hw0J0N0bRhOEhUg+ptNPooCJGNYs9DZFhzxIn+kJm
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  ARpHug7xb30FijHd6l+Mqf2O3IqAjmMxmBTzTqQXHqz6Me9IMS+kXHdpyjdjFIw14JVR/cps
  JllHKm7y0jH0W3cuXeKhe94EBcHT2t8tJ+Zwlv21lMZoMUtc7GrPZbNnn+RtP1B5wZ9Gdcl7
  TDg1NurWvkm7d9hCovtGoFwAb2oz5oJ4CxHgz1oPkux4bvFCY4Y+qTXkQJl86KJ9NY9ss/k7
  k1+e/8Yeme+ovFU2H1tWQ8i3pxQAoJgDQWfr5ZYqjWEqYSKuGWanLToyXqT4SskRquee5yyf
  5fcqkLEw9+FsZtF+wLKwXhKqQ8bpvH0NP1HDHh4uGA/vG3uCBrW/pvHzvJu7cCWje/7xd8L8
  VFRK2zvwdi6L1ZQEx8LcHjRel7YVMJra/fF39LgIP4af
}

Gnarls.ufm:gnarltest6b {
; Original formula otto magus
; modified Evan Bayliss May 2021, April 2022
; Three chosen gnarlic formulae are calculated
; One result iterates into the next
; Three chosen post function formulae are concurrently calculated -
; one after each gnarlic formula
; The final post function values are combined using Statistics derived from
; jlb.ucl and the Physicist 12 August 2021 Forum Post
; simplified to play around with by Phillip S.
::UQ3Chgn2l9UzqRIMQ47Bm3hB7Fd3FR3y2DlGYp36p+GsQqGlBiJBNLoy+w3Jm26hmLJf/NfT
  ABZpwrgYFl4TeaWbABIYO9IzUBCjz5Z9ZnplJG1KT+aBIWSYaQ1vhnZwmnjIe1XjHwJymHdd
  7c0OLv8P5YgbPXkafm1yrOh1FHwl9VIdfErBxXKy4uH32HrPe7aECiWdn6uJSGogRLzmoBvR
  j9W1oJonC4LZgYQNHnj8C/ja024z8qyTYVZRUs3KPDCvekctUDFWksPvaUNgpWaU+A5sys3T
  7Q2fFLrrSnSOi22ul63w8E/g76zuuJdAEI+TI+ftX/eovJwnzRI=
}

phs.ucl:GnarlAlgo {
::oNnHfgn2tSVTrJMQQ07C+fYIexkiWbPKNgWp0LeQqesQZ1sJuwmdDJbaV/139rYCpZjFa9ih
  Zm99e7bmZJMiY+wBAET5IBkhEHhQY2UVoD80MK+EchTjkBHlROhp11K+ivhIj/4UIQlsODh9
  5ObyHmC3bqsOdK60HFCc2ViMhbEiy5ZaVZjdAtvY8oLwEtW8VZIx148kuOVUoJ4VBxsISs6D
  7tT/3dXTXd9uMcQMhhoztwv4Anyzf+MEGCe74CEF2oO5aMLRc0zQ3ICLSaRhwiIMrgIOL9CF
  +aepF4r4s3gzSWCFD8Y4FWUPQc1BDGLdWpYRCE7RpF477C5GKMA+7046eY9DdHRasyWShAlL
  8bzSdLzM34fLkchwtPokD93dLEVmKoqq0KJnQv6Iilgl2jxI7UZ95dTc6sWidxM49GKiUWId
  /fjGUXpAY8/gecaFLzTKTxMhaYqR/utcqxHaRf9EgTOWjyTwFCYLRP2uVuY2G/q16G7zR4YU
  J186lgIkHUC1rMUOFWpAXCmXzX2yRpgd03AuFA9rUWc1VZeqQVuVktLfmJAmVmCd+2Qr98mD
  59to21aF8uhM7PnT9/cotnZp2g6qJ7u1U7VDH89fgI92
}
Hello, I've seen this several times now with different fractals, and I don't know what causes it, but sometimes multi-layer fractals are offset. This problem seems to go away when activating anti-aliasing in the working window. Here's a screenshot: ![64ecf0de96fda.png](serve/attachment&path=64ecf0de96fda.png) It seems to be always exactly 1 pixel along the y-axis of the monitor, no matter the rotation of the fractal. And it also remains 1 pixel while using shift + mous drag to zoom, here's an screenshot while doing that, you can see the offset at the border between the enlarged pixels: ![64ecf23c746d0.png](serve/attachment&path=64ecf23c746d0.png) Here's the fractal: ```` Copy2Of11 { ::ky4lMhn2dLZTutNMQU49Gw3BCtKZRk5/SuFcRSRRRBKQ7NIgWiSiIUkqk0tx3+OSO2RLKKSX 2KoFCj4bePOzXXU3k1u3tdDCltZnRV8hw0J0N0bRhOEhUg+ptNPooCJGNYs9DZFhzxIn+kJm U0ZlNRTrNnUFfbw6c2p3XvjCvYKrAp9Zr2Z1JrvXdyk2uZR5ijN6psN4VFfZuECMLMpbs5TK CGjGNxezYo1oC/wEBVb3Mqnmg+cWsxnNR1d8SMlzqJ7JExu7IiSGhwpi6K0ou3rwl7xVVEBV ARpHug7xb30FijHd6l+Mqf2O3IqAjmMxmBTzTqQXHqz6Me9IMS+kXHdpyjdjFIw14JVR/cps JllHKm7y0jH0W3cuXeKhe94EBcHT2t8tJ+Zwlv21lMZoMUtc7GrPZbNnn+RtP1B5wZ9Gdcl7 TDg1NurWvkm7d9hCovtGoFwAb2oz5oJ4CxHgz1oPkux4bvFCY4Y+qTXkQJl86KJ9NY9ss/k7 k1+e/8Yeme+ovFU2H1tWQ8i3pxQAoJgDQWfr5ZYqjWEqYSKuGWanLToyXqT4SskRquee5yyf 5fcqkLEw9+FsZtF+wLKwXhKqQ8bpvH0NP1HDHh4uGA/vG3uCBrW/pvHzvJu7cCWje/7xd8L8 VFRK2zvwdi6L1ZQEx8LcHjRel7YVMJra/fF39LgIP4af } Gnarls.ufm:gnarltest6b { ; Original formula otto magus ; modified Evan Bayliss May 2021, April 2022 ; Three chosen gnarlic formulae are calculated ; One result iterates into the next ; Three chosen post function formulae are concurrently calculated - ; one after each gnarlic formula ; The final post function values are combined using Statistics derived from ; jlb.ucl and the Physicist 12 August 2021 Forum Post ; simplified to play around with by Phillip S. ::UQ3Chgn2l9UzqRIMQ47Bm3hB7Fd3FR3y2DlGYp36p+GsQqGlBiJBNLoy+w3Jm26hmLJf/NfT ABZpwrgYFl4TeaWbABIYO9IzUBCjz5Z9ZnplJG1KT+aBIWSYaQ1vhnZwmnjIe1XjHwJymHdd 7c0OLv8P5YgbPXkafm1yrOh1FHwl9VIdfErBxXKy4uH32HrPe7aECiWdn6uJSGogRLzmoBvR j9W1oJonC4LZgYQNHnj8C/ja024z8qyTYVZRUs3KPDCvekctUDFWksPvaUNgpWaU+A5sys3T 7Q2fFLrrSnSOi22ul63w8E/g76zuuJdAEI+TI+ftX/eovJwnzRI= } phs.ucl:GnarlAlgo { ::oNnHfgn2tSVTrJMQQ07C+fYIexkiWbPKNgWp0LeQqesQZ1sJuwmdDJbaV/139rYCpZjFa9ih Zm99e7bmZJMiY+wBAET5IBkhEHhQY2UVoD80MK+EchTjkBHlROhp11K+ivhIj/4UIQlsODh9 5ObyHmC3bqsOdK60HFCc2ViMhbEiy5ZaVZjdAtvY8oLwEtW8VZIx148kuOVUoJ4VBxsISs6D 7tT/3dXTXd9uMcQMhhoztwv4Anyzf+MEGCe74CEF2oO5aMLRc0zQ3ICLSaRhwiIMrgIOL9CF +aepF4r4s3gzSWCFD8Y4FWUPQc1BDGLdWpYRCE7RpF477C5GKMA+7046eY9DdHRasyWShAlL 8bzSdLzM34fLkchwtPokD93dLEVmKoqq0KJnQv6Iilgl2jxI7UZ95dTc6sWidxM49GKiUWId /fjGUXpAY8/gecaFLzTKTxMhaYqR/utcqxHaRf9EgTOWjyTwFCYLRP2uVuY2G/q16G7zR4YU J186lgIkHUC1rMUOFWpAXCmXzX2yRpgd03AuFA9rUWc1VZeqQVuVktLfmJAmVmCd+2Qr98mD 59to21aF8uhM7PnT9/cotnZp2g6qJ7u1U7VDH89fgI92 } ````
edited Aug 28 '23 at 8:15 pm
 
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reply

I'm afraid I can't load these fractals as I don't have the "gnarltest6b" formula (if you've included that in the above text then forgive me, I don't know how to use that information, sorry).

Is your offset only apparent with this one formula or is it universal to all? Does it render with those unwanted lines or could it be a display artefact of some kind, perhaps? Sometimes what you see is not always what you get with UF.

...just tossing around a couple of ideas, really. I have no real idea what might be causing this. smile

I'm afraid I can't load these fractals as I don't have the "gnarltest6b" formula (if you've included that in the above text then forgive me, I don't know how to use that information, sorry). Is your offset only apparent with this one formula or is it universal to all? Does it render with those unwanted lines or could it be a display artefact of some kind, perhaps? Sometimes what you see is not always what you get with UF. ...just tossing around a couple of ideas, really. I have no real idea what might be causing this. (wasntme)

Chris Martin
Gallery: Velvet--Glove.deviantart.com

Currently using UF6.05 on Windows 11 Professional 64-bit

 
0
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Hello,

that was the output from "copy Formulas" so everything should be there, I wonder why you can't load it. To your question:

  • The offset is not universal, but it's also not limited to this formula, I've noticed it before
  • The offset does not appear in the final render, nor does it appear when I turn on anti-aliasing on the working window
  • Looking at your questions, I re-opened the fractal and noticed that the lines only appear when displaying it in WQHD-resolution. My monitor is 2560x1440 and sometimes I go full-screen for exploring. In fact, it seems to be related to the vertical height of the fractal. I tried a few values and the lines appear only if the working fractal is exactly 1440 pixels high.

Here's another paste:

23 {
::takcgin2lLZzOONMUU49VqvDWZFsYS9fxJFkXMjEChESwbQlnkbSsGH7gjL0+2zNp/QWgQDL
  RkV23cPn7x2ftRTdy4e32NESymcgOjLyI/w2k618CFl0D2u+kmJlUizcGiTa+c31Roxmm0Zf
  t36c2x3vfHbHniq3uZpvFPrNjJbwrz+8cJCLjEGN120ZNjSJDQsDGCNgO8dIiq2uZwMOa9dX
  ED+EE1PIyLE8ChQWxl7egpyFUlsUJZlFkBTnXLyV0KaZVFx47wzwe62Nth4wRnZxoBzJ7sT8
  CKZEi19Q9L6QbLp16AvZAP1f0biup8jtDZEcsxz6su5SJYKpeOb2lxDPbsu5gv8ljedYkpxF
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  Qf01FyQzaA0C8ycODXsvO4Cxnw+qNPP9Gw38WM7hjp7T6mEOLXWVq4viRPL7PNd265+48LAJ
  0S+gvBV2FNNWU8ysnGCBkrODTErvBOhPIkFhahiTrqKvWmxVXrzkKqSwKv3vaBMW+nkrkFF4
  5+KSteE+wVF07AHvo43SmPZqfpLGOixdNc+fLKeHQWhGTfLmeVM5FjXjl/7xkybsXJTVsXej
  JLquVXgRkKvxkCB7XMpoUoEl7/rYyfS4vQ70
}

Gnarls.ufm:gnarltest6b {
; Original formula otto magus
; modified Evan Bayliss May 2021, April 2022
; Three chosen gnarlic formulae are calculated
; One result iterates into the next
; Three chosen post function formulae are concurrently calculated -
; one after each gnarlic formula
; The final post function values are combined using Statistics derived from
; jlb.ucl and the Physicist 12 August 2021 Forum Post
; simplified to play around with by Phillip S.
::Av6LGgn2l9UwqRIMUw7By/wD7Fd3FRL0eo0ASv1T9PolU9p8gYSQzCRZ/47L626hmLJz8m5N
  TkCyShXkiVQBP4pIakCpg5wJmpSKMOnnnHdmOmYC1m81CpYZHTj6hNckBbaODQjvGOBzkNPp
  6zm4XY0n8waW+nm4mml7aS9IyCyruA1FngljysffGqliv1kxdN17br3etJBliOsXf1kIDUwg
  qsZa0bQYwqnMBcOAPnJFj6YaPqn4/WLaTPzrKvAVlFphDW1jShHnIXH1ShFFrzrn0jweKtaf
  gcWV2b7dI7vgV1V7nS2Ca72c9rZejvzZ9Rf/MGkCAubi/XHxfY6HzoydoD==
}

phs.ucl:GnarlAlgo {
::oNnHfgn2tSVTrJMQQ07C+fYIexkiWbPKNgWp0LeQqesQZ1sJuwmdDJbaV/139rYCpZjFa9ih
  Zm99e7bmZJMiY+wBAET5IBkhEHhQY2UVoD80MK+EchTjkBHlROhp11K+ivhIj/4UIQlsODh9
  5ObyHmC3bqsOdK60HFCc2ViMhbEiy5ZaVZjdAtvY8oLwEtW8VZIx148kuOVUoJ4VBxsISs6D
  7tT/3dXTXd9uMcQMhhoztwv4Anyzf+MEGCe74CEF2oO5aMLRc0zQ3ICLSaRhwiIMrgIOL9CF
  +aepF4r4s3gzSWCFD8Y4FWUPQc1BDGLdWpYRCE7RpF477C5GKMA+7046eY9DdHRasyWShAlL
  8bzSdLzM34fLkchwtPokD93dLEVmKoqq0KJnQv6Iilgl2jxI7UZ95dTc6sWidxM49GKiUWId
  /fjGUXpAY8/gecaFLzTKTxMhaYqR/utcqxHaRf9EgTOWjyTwFCYLRP2uVuY2G/q16G7zR4YU
  J186lgIkHUC1rMUOFWpAXCmXzX2yRpgd03AuFA9rUWc1VZeqQVuVktLfmJAmVmCd+2Qr98mD
  59to21aF8uhM7PnT9/cotnZp2g6qJ7u1U7VDH89fgI92
}
Hello, that was the output from "copy Formulas" so everything should be there, I wonder why you can't load it. To your question: - The offset is not universal, but it's also not limited to this formula, I've noticed it before - The offset does not appear in the final render, nor does it appear when I turn on anti-aliasing on the working window - Looking at your questions, I re-opened the fractal and noticed that the lines only appear when displaying it in WQHD-resolution. My monitor is 2560x1440 and sometimes I go full-screen for exploring. In fact, it seems to be related to the vertical height of the fractal.** I tried a few values and the lines appear only if the working fractal is exactly 1440 pixels high.** Here's another paste: ```` 23 { ::takcgin2lLZzOONMUU49VqvDWZFsYS9fxJFkXMjEChESwbQlnkbSsGH7gjL0+2zNp/QWgQDL RkV23cPn7x2ftRTdy4e32NESymcgOjLyI/w2k618CFl0D2u+kmJlUizcGiTa+c31Roxmm0Zf t36c2x3vfHbHniq3uZpvFPrNjJbwrz+8cJCLjEGN120ZNjSJDQsDGCNgO8dIiq2uZwMOa9dX ED+EE1PIyLE8ChQWxl7egpyFUlsUJZlFkBTnXLyV0KaZVFx47wzwe62Nth4wRnZxoBzJ7sT8 CKZEi19Q9L6QbLp16AvZAP1f0biup8jtDZEcsxz6su5SJYKpeOb2lxDPbsu5gv8ljedYkpxF sdLrh4nwp8l22JIhlxq5Y5THgTja+O6FPOvsVMv16nsNwl7+oxP1iR0Z9gJuKYj9Yqqd3T1S Qf01FyQzaA0C8ycODXsvO4Cxnw+qNPP9Gw38WM7hjp7T6mEOLXWVq4viRPL7PNd265+48LAJ 0S+gvBV2FNNWU8ysnGCBkrODTErvBOhPIkFhahiTrqKvWmxVXrzkKqSwKv3vaBMW+nkrkFF4 5+KSteE+wVF07AHvo43SmPZqfpLGOixdNc+fLKeHQWhGTfLmeVM5FjXjl/7xkybsXJTVsXej JLquVXgRkKvxkCB7XMpoUoEl7/rYyfS4vQ70 } Gnarls.ufm:gnarltest6b { ; Original formula otto magus ; modified Evan Bayliss May 2021, April 2022 ; Three chosen gnarlic formulae are calculated ; One result iterates into the next ; Three chosen post function formulae are concurrently calculated - ; one after each gnarlic formula ; The final post function values are combined using Statistics derived from ; jlb.ucl and the Physicist 12 August 2021 Forum Post ; simplified to play around with by Phillip S. ::Av6LGgn2l9UwqRIMUw7By/wD7Fd3FRL0eo0ASv1T9PolU9p8gYSQzCRZ/47L626hmLJz8m5N TkCyShXkiVQBP4pIakCpg5wJmpSKMOnnnHdmOmYC1m81CpYZHTj6hNckBbaODQjvGOBzkNPp 6zm4XY0n8waW+nm4mml7aS9IyCyruA1FngljysffGqliv1kxdN17br3etJBliOsXf1kIDUwg qsZa0bQYwqnMBcOAPnJFj6YaPqn4/WLaTPzrKvAVlFphDW1jShHnIXH1ShFFrzrn0jweKtaf gcWV2b7dI7vgV1V7nS2Ca72c9rZejvzZ9Rf/MGkCAubi/XHxfY6HzoydoD== } phs.ucl:GnarlAlgo { ::oNnHfgn2tSVTrJMQQ07C+fYIexkiWbPKNgWp0LeQqesQZ1sJuwmdDJbaV/139rYCpZjFa9ih Zm99e7bmZJMiY+wBAET5IBkhEHhQY2UVoD80MK+EchTjkBHlROhp11K+ivhIj/4UIQlsODh9 5ObyHmC3bqsOdK60HFCc2ViMhbEiy5ZaVZjdAtvY8oLwEtW8VZIx148kuOVUoJ4VBxsISs6D 7tT/3dXTXd9uMcQMhhoztwv4Anyzf+MEGCe74CEF2oO5aMLRc0zQ3ICLSaRhwiIMrgIOL9CF +aepF4r4s3gzSWCFD8Y4FWUPQc1BDGLdWpYRCE7RpF477C5GKMA+7046eY9DdHRasyWShAlL 8bzSdLzM34fLkchwtPokD93dLEVmKoqq0KJnQv6Iilgl2jxI7UZ95dTc6sWidxM49GKiUWId /fjGUXpAY8/gecaFLzTKTxMhaYqR/utcqxHaRf9EgTOWjyTwFCYLRP2uVuY2G/q16G7zR4YU J186lgIkHUC1rMUOFWpAXCmXzX2yRpgd03AuFA9rUWc1VZeqQVuVktLfmJAmVmCd+2Qr98mD 59to21aF8uhM7PnT9/cotnZp2g6qJ7u1U7VDH89fgI92 } ````
edited Sep 1 '23 at 5:53 pm
 
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I got the fractal loaded this time, thanks.

I still think this is most likely some sort of display/resolution artefact, especially since you say renders are ok.

I have a 3840 x 2160px display now and have had some mixed results with your fractal:

  • The image at 1440px high doesn't quite fill my maximised UF window but it looks ok.
  • I changed my screen resolution to 2560 x 1440 and the maximised image, still at at 1440px high, does display this offset, thus confirming your findings on your screen size.
  • Going back to my usual resolution and enlarging the fractal dimensions to 3840 x 2122 (thus filling the native width of my screen) - all ok
  • Enlarging dimensions to 3840 x 2160 (full width and height of my screen but a slightly different image ratio) - not ok.

It is my understanding that the image in the working fractal window is more of a preview and not a totally accurate representation of the fractal. This is partly so that updates to the design can be applied quickly as you work. I have seen various oddities in fractal windows over the years so something like this in a working window does not surprise me. Granted, these unwanted lines are a bit perplexing but if the final renders are coming out as intended then it is probably just be a quirk of the visual environment you have to live with.

Of course, I could be totally wrong. In which case I'm sure someone will be along in a while to offer another explanation! smile

I got the fractal loaded this time, thanks. I still think this is most likely some sort of display/resolution artefact, especially since you say renders are ok. I have a 3840 x 2160px display now and have had some mixed results with your fractal: - The image at 1440px high doesn't quite fill my maximised UF window but it looks ok. - I changed my screen resolution to 2560 x 1440 and the maximised image, still at at 1440px high, **does** display this offset, thus confirming your findings on your screen size. - Going back to my usual resolution and enlarging the fractal dimensions to 3840 x 2122 (thus filling the native **width** of my screen) - all ok - Enlarging dimensions to 3840 x 2160 (full width and height of my screen but a slightly different image ratio) - not ok. It is my understanding that the image in the working fractal window is more of a preview and not a totally accurate representation of the fractal. This is partly so that updates to the design can be applied quickly as you work. I have seen various oddities in fractal windows over the years so something like this in a working window does not surprise me. Granted, these unwanted lines are a bit perplexing but if the final renders are coming out as intended then it is probably just be a quirk of the visual environment you have to live with. Of course, I could be totally wrong. In which case I'm sure someone will be along in a while to offer another explanation! (wasntme)

Chris Martin
Gallery: Velvet--Glove.deviantart.com

Currently using UF6.05 on Windows 11 Professional 64-bit

 
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Yes, don't get me wrong, it's not a big deal. It's just something I've noticed happening sometimes over the last years and finally decided to report. As to its priority, it's not too bad, but some fractals, especially detailed ones, look a lot different when it happens.

Yes, don't get me wrong, it's not a big deal. It's just something I've noticed happening sometimes over the last years and finally decided to report. As to its priority, it's not too bad, but some fractals, especially detailed ones, look a lot different when it happens.
 
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I've tested the second fractal and didn't get the offset, even at 2560x1440 resolution. Is is random or 100% reproducible for you? Are you using version 6.05?

I've tested the second fractal and didn't get the offset, even at 2560x1440 resolution. Is is random or 100% reproducible for you? Are you using version 6.05?

Ultra Fractal author

 
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Out of curiosity I've run a few more tests here with the second fractal entitled "23" with UF 6.05 re-started for every test.

At Phillip's screen resolution of 2560x1440 the overlap effect is totally reproducible here. Changing the image scale in Windows (100% and 150%) made no difference. The overlap (thin white lines) is small but visible:

64fc8aa9706cc.png

But there is something curious going on here. Whatever the screen resolution, if I change the image dimensions to match that of the screen resolution I consistently see this overlap. If the image size and the screen resolution are not identical then the effect disappears:

Image size 3840x2160 on screen res 3840x2160 --> overlap
Image size 3840x2160 on screen res 2560x1440 --> OK

Image size 2560x1600 on screen res 2560x1600 --> overlap
Image size 2560x1600 on screen res 1900x1200 --> OK

Image size 1920x1080 on screen res 1920x1080 --> overlap
Image size 1920x1080 on screen res 2560x1440 --> OK
Image size 1920x1080 on screen res 3840x2160 --> OK

Whether this is true for other users I don't know but it is perhaps something to take into consideration.

Out of curiosity I've run a few more tests here with the second fractal entitled "23" with UF 6.05 re-started for every test. At Phillip's screen resolution of 2560x1440 the overlap effect is totally reproducible here. Changing the image scale in Windows (100% and 150%) made no difference. The overlap (thin white lines) is small but visible: ![64fc8aa9706cc.png](serve/attachment&path=64fc8aa9706cc.png) But there is something curious going on here. Whatever the screen resolution, if I change the image dimensions **to match that of the screen resolution** I consistently see this overlap. If the image size and the screen resolution are **not** identical then the effect disappears: Image size 3840x2160 on screen res 3840x2160 --> overlap Image size 3840x2160 on screen res 2560x1440 --> OK Image size 2560x1600 on screen res 2560x1600 --> overlap Image size 2560x1600 on screen res 1900x1200 --> OK Image size 1920x1080 on screen res 1920x1080 --> overlap Image size 1920x1080 on screen res 2560x1440 --> OK Image size 1920x1080 on screen res 3840x2160 --> OK Whether this is true for other users I don't know but it is perhaps something to take into consideration.

Chris Martin
Gallery: Velvet--Glove.deviantart.com

Currently using UF6.05 on Windows 11 Professional 64-bit

 
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Curious.
My screen is 1920x1080.
In UF with image size 1920x1080 I get white lines without anti-aliasing:
64fe00a9defe7.jpg
and no white lines with anti-aliasing:
64fe00bf9d0d6.jpg

In UF with image size 1904 by 1071, still the exact 16:9 aspect ratio,
no white lines even without anti-aliasing:
64fe01fb22a04.jpg

Rendered at 1920x1080, no white lines, with or without anti-aliasing.

UF 6.05, Windows 11 22H2

Curious. My screen is 1920x1080. In UF with image size 1920x1080 I get white lines without anti-aliasing: ![64fe00a9defe7.jpg](serve/attachment&path=64fe00a9defe7.jpg) and no white lines with anti-aliasing: ![64fe00bf9d0d6.jpg](serve/attachment&path=64fe00bf9d0d6.jpg) In UF with image size 1904 by 1071, still the exact 16:9 aspect ratio, no white lines even without anti-aliasing: ![64fe01fb22a04.jpg](serve/attachment&path=64fe01fb22a04.jpg) Rendered at 1920x1080, no white lines, with or without anti-aliasing. UF 6.05, Windows 11 22H2
 
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Very interesting, I can reproduce it now. It seems to have to do with OpenGL acceleration. If I turn acceleration off in View > Preferences > Fractal (needs a restart of UF), the problem is gone. I'll look into it but it seems to be a visual thing in the fractal window only when the fractal size matches the screen size.

Very interesting, I can reproduce it now. It seems to have to do with OpenGL acceleration. If I turn acceleration off in View > Preferences > Fractal (needs a restart of UF), the problem is gone. I'll look into it but it seems to be a visual thing in the fractal window only when the fractal size matches the screen size.

Ultra Fractal author

 
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I'll look into it but it seems to be a visual thing in the fractal window only when the fractal size matches the screen size.

Yes, it's definitely just a visual bug, it has no impact on renders whatsoever. Testing to turn off OpenGL didn't occur to me, this is useful info, since it is a bit irritating sometimes. smile

> I'll look into it but it seems to be a visual thing in the fractal window only when the fractal size matches the screen size. Yes, it's definitely just a visual bug, it has no impact on renders whatsoever. Testing to turn off OpenGL didn't occur to me, this is useful info, since it is a bit irritating sometimes. :)
 
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