Re: [SailfishDevel] ListView , Image with large height and EGL errors
So, Image itself isn't doing the texture rendering? but the closest container does it? but, how would it explain that the problem doesn't occur if i put multiple such images in a single delegate? and even in the example that has the problem, the Image is not directly the delegate, but there's Item in between? Sander van Grieken schreef op 2019-06-01 19:28: ListView probably doesn't split its surface into multiple textures if the texture size is exceeded. A computer probably has a larger texture size, but you'll probably run into the same issue on even larger images. grtz, Sander On vrijdag 31 mei 2019 01:57:52 CEST AL13N wrote: I have a ListView with an ListItem delegate and an Image in it; when i have 2 images with a large height on it next to each other, after scrolling to it, i get an EGL Texture error . doing this on a computer does not show this error. if you do a ListView with a ListItem and it has those 3 Image and they are anchored, then scrolling through them is not a problem at all. I suspect it has something to do with how the ListView is instantiating the image, maybe parallel initialization or something? anyone have an idea for a workaround? AL13N ___ SailfishOS.org Devel mailing list To unsubscribe, please send a mail to devel-unsubscr...@lists.sailfishos.org ___ SailfishOS.org Devel mailing list To unsubscribe, please send a mail to devel-unsubscr...@lists.sailfishos.org ___ SailfishOS.org Devel mailing list To unsubscribe, please send a mail to devel-unsubscr...@lists.sailfishos.org
Re: [SailfishDevel] ListView , Image with large height and EGL errors
ListView probably doesn't split its surface into multiple textures if the texture size is exceeded. A computer probably has a larger texture size, but you'll probably run into the same issue on even larger images. grtz, Sander On vrijdag 31 mei 2019 01:57:52 CEST AL13N wrote: > I have a ListView with an ListItem delegate and an Image in it; > > when i have 2 images with a large height on it next to each other, after > scrolling to it, i get an EGL Texture error . > > doing this on a computer does not show this error. > > if you do a ListView with a ListItem and it has those 3 Image and they > are anchored, then scrolling through them is not a problem at all. > > I suspect it has something to do with how the ListView is instantiating > the image, maybe parallel initialization or something? > > anyone have an idea for a workaround? > > AL13N > ___ > SailfishOS.org Devel mailing list > To unsubscribe, please send a mail to devel-unsubscr...@lists.sailfishos.org ___ SailfishOS.org Devel mailing list To unsubscribe, please send a mail to devel-unsubscr...@lists.sailfishos.org
Re: [SailfishDevel] ListView , Image with large height and EGL errors (AL13N)
I have a qml only app...
i found out experimentally that the limit is at 4096 for Y; but only in
a ListView; if i do regular images, then there is no such limit...
(which seems weird)
Slava Monich schreef op 2019-05-31 23:18:
Those who don't like the idea of hardcoding 3264 (or any other number)
in their code, can query GL_MAX_TEXTURE_SIZE instead:
https://github.com/monich/harbour-foilpics/blob/master/src/FoilPicsImageProvider.cpp#L57
Cheers,
-Slava
when i use Image with big images, i use code like this:|
Image {
onSourceSizeChanged: {
if( sourceSize.width > 3264 )
sourceSize.width = 3264
if( sourceSize.height > 3264 )
sourceSize.height = 3264
}
cache: false
asynchronous: true
}
or it just show black screen
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Re: [SailfishDevel] ListView , Image with large height and EGL errors (AL13N)
Those who don't like the idea of hardcoding 3264 (or any other number)
in their code, can query GL_MAX_TEXTURE_SIZE instead:
https://github.com/monich/harbour-foilpics/blob/master/src/FoilPicsImageProvider.cpp#L57
Cheers,
-Slava
when i use Image with big images, i use code like this:|
Image {
onSourceSizeChanged: {
if( sourceSize.width > 3264 )
sourceSize.width = 3264
if( sourceSize.height > 3264 )
sourceSize.height = 3264
}
cache: false
asynchronous: true
}
or it just show black screen
___
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Re: [SailfishDevel] ListView , Image with large height and EGL errors
On 31/05/2019 02:57, AL13N wrote: > I have a ListView with an ListItem delegate and an Image in it; > > when i have 2 images with a large height on it next to each other, after > scrolling to it, i get an EGL Texture error . Hey AL13N, Unless someone else already knows the answer, could you provide some QML -- a minimal working example -- that generates the error? This would be a big help in understanding what's going on. David -- Website: http://www.flypig.co.uk <>___ SailfishOS.org Devel mailing list To unsubscribe, please send a mail to devel-unsubscr...@lists.sailfishos.org
Re: [SailfishDevel] ListView , Image with large height and EGL errors (AL13N)
I actually did:
width: parent.width
asynchronous: true
cache: false
sourceSize.width: width
for this thing; the height it still like 8000 pixels high, even with
width == the jolla1 pixel width.
thing is, i get black for those long images, and an EGL Texture error.
short ones are done fine.
but, if i do the image on its own, then it works fine. so, it's
something to do with the ListView and the way it instantiates it...
Dmitriy Sedov schreef op 2019-05-31 14:05:
when i use Image with big images, i use code like this:|
Image {
onSourceSizeChanged: {
if( sourceSize.width > 3264 )
sourceSize.width = 3264
if( sourceSize.height > 3264 )
sourceSize.height = 3264
}
cache: false
asynchronous: true
}
or it just show black screen
___
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devel-unsubscr...@lists.sailfishos.org
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Re: [SailfishDevel] ListView , Image with large height and EGL errors (AL13N)
when i use Image with big images, i use code like this:|
Image {
onSourceSizeChanged: {
if( sourceSize.width > 3264 )
sourceSize.width = 3264
if( sourceSize.height > 3264 )
sourceSize.height = 3264
}
cache: false
asynchronous: true
}
or it just show black screen
___
SailfishOS.org Devel mailing list
To unsubscribe, please send a mail to devel-unsubscr...@lists.sailfishos.org
[SailfishDevel] ListView , Image with large height and EGL errors
I have a ListView with an ListItem delegate and an Image in it; when i have 2 images with a large height on it next to each other, after scrolling to it, i get an EGL Texture error . doing this on a computer does not show this error. if you do a ListView with a ListItem and it has those 3 Image and they are anchored, then scrolling through them is not a problem at all. I suspect it has something to do with how the ListView is instantiating the image, maybe parallel initialization or something? anyone have an idea for a workaround? AL13N ___ SailfishOS.org Devel mailing list To unsubscribe, please send a mail to devel-unsubscr...@lists.sailfishos.org
