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[Bug][Brushes] RadialGradientBrush platform differences #11572

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davidbritch opened this issue Jul 27, 2020 · 1 comment · Fixed by #11748
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[Bug][Brushes] RadialGradientBrush platform differences #11572

davidbritch opened this issue Jul 27, 2020 · 1 comment · Fixed by #11748
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@jsuarezruiz
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a/brushes e/4 🕓 4 i/high Completely doesn't work, crashes, or is unusably slow, has no obvious workaround; occurs less often in-progress This issue has an associated pull request that may resolve it! t/bug 🐛
Milestone
5.0.0

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@davidbritch
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davidbritch commented Jul 27, 2020 •
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Description

I've painted three RadialGradientBrush objects in Frame objects:

  1. Upper left - center (0.0, 0.0).
  2. Center - center (0.5, 0.5).
  3. Lower right - center (1.0, 1.0).

On iOS, the three gradients are painted correctly.

On Android, no radial gradients are painted.

On UWP, only the center radial gradient is painted correctly.

See the screenshots below.

Steps to Reproduce

  1. Run the attached sample.
  2. Browse to the radial gradient brush demo page on iOS, Android, and UWP.

Expected Behavior

Three correct radial gradients - upper left, center, and lower right.

Actual Behavior

Three correct radial gradients on iOS. Zero radial gradients on Android. One correct radial gradient on UWP.

Basic Information

  • Version with issue: 4.8-pre2
  • IDE: VSMac 8.6.7
  • Platform Target Frameworks:
    • iOS: 13.6
    • Android: API 28
    • UWP: 10.0.18362.0

Screenshots

iOS:

Simulator Screen Shot - iPhone 11 - 2020-07-27 at 11 45 52

Android:

Screenshot_1595841179

UWP:

uwp01

Reproduction Link

BrushesDemos.zip
@davidbritch davidbritch added t/bug 🐛 s/unverified New report that has yet to be verified labels Jul 27, 2020
@StephaneDelcroix StephaneDelcroix added a/brushes and removed s/unverified New report that has yet to be verified labels Jul 28, 2020
@jsuarezruiz jsuarezruiz added i/high Completely doesn't work, crashes, or is unusably slow, has no obvious workaround; occurs less often e/4 🕓 4 labels Aug 10, 2020
@jsuarezruiz jsuarezruiz mentioned this issue Aug 11, 2020
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@samhouts samhouts added the in-progress This issue has an associated pull request that may resolve it! label Aug 11, 2020
@samhouts samhouts added this to the 5.0.0 milestone Aug 13, 2020
@davidbritch
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Confirming that this is still an issue on Android in Forms 5.0-pre2.

rmarinho added a commit that referenced this issue Oct 29, 2020
@jsuarezruiz @rmarinho
[Android] Fixed RadialGradientBrush Frame rendering issue (#11748) fixes
39ff768 
 #11572

* Fixed RadialGradientBrush Frame issue on Android

* Update Issue11572.xaml.cs

Co-authored-by: Rui Marinho <me@ruimarinho.net>
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@jsuarezruiz jsuarezruiz

Labels
a/brushes e/4 🕓 4 i/high Completely doesn't work, crashes, or is unusably slow, has no obvious workaround; occurs less often in-progress This issue has an associated pull request that may resolve it! t/bug 🐛
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Milestone
5.0.0
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Successfully merging a pull request may close this issue.

[Android] Fixed RadialGradientBrush Frame rendering issue xamarin/Xamarin.Forms
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@StephaneDelcroix @jsuarezruiz @samhouts @davidbritch