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From Harbs <harbs.li...@gmail.com>
Subject Re: Blurry AIR App on Retina
Date Fri, 12 Dec 2014 09:56:24 GMT
Of course that begs the question: why did Adobe not make high the default?

On Dec 12, 2014, at 7:00 AM, Alex Harui <aharui@adobe.com> wrote:

> I asked on an internal list.  The one person who responded said it should
> be safe to set to high.
> -Alex
> On 12/11/14, 1:26 PM, "Harbs" <harbs.lists@gmail.com> wrote:
>> I assume someone on the AIR team did tests. Is there anyone you can ask?
>> On Dec 11, 2014, at 10:58 PM, Alex Harui <aharui@adobe.com> wrote:
>>> OK, I tried your example and read some articles I found on the web.  It
>>> seems that when you create a .AIR file, the requestedDisplayResolution
>>> locks in how many pixels the runtime is going to render and on retina
>>> screens the OS scales up the low res.  I rarely run published AIR apps,
>>> but when I just ran our published Apache Flex Installer, I can see it is
>>> also not as nice looking on the retina screen.  Interestingly, the .AIR
>>> file from your example does not have an option for “open in low
>>> resolution”, but the actual .app for the Installer does, but it appears
>>> to
>>> be locked to “open in low resolution” and you can’t change it.
>>> So, this is an AIR issue and controlled by the
>>> requestedDisplayResolution
>>> flag.  We might need to do some tests on what happens if you set that
>>> flag
>>> to true and run on a non-Retina Mac, and whether cpu overhead goes up or
>>> not when that flag is set.
>>> At first, I couldn’t believe that the scaling would cause these kinds of
>>> visual artifacts, but after thinking about it more, I can see how, if
>>> the
>>> app generates bitmaps and chooses anti-aliasing values based on low-res,
>>> when scaled, those choices will be more apparent.
>>> -Alex
>>> On 12/11/14, 11:55 AM, "Harbs" <harbs.lists@gmail.com> wrote:
>>>> When I debug the app, it looks fine without editing the
>>>> requestedDisplayResolution. It’s only when I export it as an AIR
>>>> package
>>>> and install that, things get blurry.
>>>> On Dec 11, 2014, at 9:29 PM, Alex Harui <aharui@adobe.com> wrote:
>>>>> I’ll take a look.  I have a Macbook Pro with Retina.
>>>>> I have a feeling there is more to it than just this setting.  I have
>>>>> been
>>>>> running the Apache Flex Installer I built and it has an -app.xml with
>>>>> requestedDisplayResolution commented out and I don’t see blurry
>>>>> visuals.
>>>>> Are you running these apps with the runtime baked in or via adl?
>>>>> Could
>>>>> you be launching some other version of adl?
>>>>> Remember that Flash/AIR rendering is done via scan-line conversion.
>>>>> That
>>>>> means that the set of vectors on the display list are visited for
>>>>> every
>>>>> output pixel.  I’m sure there are optimizations in there, but if you
>>>>> have
>>>>> to compute 4 times as many pixels, that might add up to something,
>>>>> possibly even the cpu utilization when the app is drawing an
>>>>> animation.
>>>>> We have a descriptor-template in templates/air/ in the SDK folder.  I
>>>>> always thought FB used that one.  We could teach the installer to not
>>>>> copy
>>>>> the one from the AIR kit, but first I want to make sure that this is
>>>>> truly
>>>>> the root of the problem, and that it won’t be gpu/cpu intensive to
>>>>> default
>>>>> to rendering times as many pixels.
>>>>> -Alex
>>>>> On 12/11/14, 10:25 AM, "Harbs" <harbs.lists@gmail.com> wrote:
>>>>>> I just tried on 4.10 with the same result.
>>>>>> Here’s a zip of a really simple project with two AIR files. One
>>>>>> standard, and the other with high. The difference on Retina displays
>>>>>> is
>>>>>> very obvious. Even the window chrome is blurry using the standard
>>>>>> setting.
>>>>>> https://www.dropbox.com/s/emj93lumi6s06m7/BlurryTest.zip?dl=0
>>>>>> On Dec 11, 2014, at 8:10 PM, OmPrakash Muppirala
>>>>>> <bigosmallm@gmail.com>
>>>>>> wrote:
>>>>>>> Can you try with an earlier version of the Flex SDK (4.13 or
4.12) ?
>>>>>>> I
>>>>>>> am
>>>>>>> wondering if we messed up something..
>>>>>>> Thanks,
>>>>>>> Om
>>>>>>> On Thu, Dec 11, 2014 at 10:06 AM, Harbs <harbs.lists@gmail.com>
>>>>>>> wrote:
>>>>>>>> I have no idea why.
>>>>>>>> Even text was blurry in the app I built.
>>>>>>>> Searching the web brought up very few results. You’d think
>>>>>>>> something
>>>>>>>> like
>>>>>>>> this would have an awful lot of hits…
>>>>>>>> On Dec 11, 2014, at 7:38 PM, OmPrakash Muppirala
>>>>>>>> <bigosmallm@gmail.com>
>>>>>>>> wrote:
>>>>>>>>> It seems like not a lot of folks have run into this issue.

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