Handling Error #3768 on IOS

[idanasher]

First of all - I am using the DMT already for my android game- works great !! loving it !
Thanks a lot Gil (and XTDStudios) for your continued efforts...

I am performing testing on ipad\iphone devicesnow before launching my game
and I have this problem
whenever a DMT instance is still processing graphics - I exit the app (background).
this always results on this error:

Error: Error #3768: The Stage3D API may not be used during background execution on this operating system.
at ConcreteRectangleTexture/uploadBitmapData()[/Users/redge/Dropbox/Development/starling-2/starling/src/starling/textures/ConcreteRectangleTexture.as:38]
at starling.textures::Texture$/fromBitmapData()[/Users/redge/Dropbox/Development/starling-2/starling/src/starling/textures/Texture.as:321]
at com.xtdstudios.DMT.starlingConverter::StarlingConverter/init()[C:\Client\Flash\Libraries\PkamaLib\V_6_STAR\com\xtdstudios\DMT\starlingConverter\StarlingConverter.as:75]
at com.xtdstudios.DMT::DMTBasic/processTextures()[C:\Client\Flash\Libraries\PkamaLib\V_6_STAR\com\xtdstudios\DMT\DMTBasic.as:119]
at com.xtdstudios.DMT::DMTAbsAPI/onTexturesReady()[C:\Client\Flash\Libraries\PkamaLib\V_6_STAR\com\xtdstudios\DMT\DMTAbsAPI.as:274]
at com.xtdstudios.DMT::DMTAbsAPI/onGenerateComplete()[C:\Client\Flash\Libraries\PkamaLib\V_6_STAR\com\xtdstudios\DMT\DMTAbsAPI.as:269]
at com.xtdstudios.DMT::DMTAbsAPI/onGenerateComplete()

The DMT tries to render textures while app is in background.

But I have notice this:
on StarlingConverter.init function - you have this Try & Catch:
.....
catch (e:Error)
{
// we will ignore any error in case the context was diposed when creating the textures
// the context should be re-created anyways.
if (Starling.context && Starling.context.driverInfo != "Disposed")
throw e;
}

As I see it, in order to ignore this scenario as well, we should check the 'Starling.current.isStarted' result as well, thus resulting in this:

if (Starling.context && Starling.context.driverInfo != "Disposed" && Starling.current.isStarted)

In this way, we will avoid having this error thrown in this case.
we can also check this condition before 'Texture.fromBitmapData' ....

In addition, I have found out that it is wise, on the 'dmtComplete' event to check weather your app is active\deactivate.
and if it is suspended (on background) then I handle this manully... and continue the flow of generating graphics and using the dmt's created assets.

This bug has troubled me a lot lately, and I hope this sharing will help resolving this for others as well.

[gilamran]

It would be great if you could create a pull request will all the implementation that you mentioned so others will also benefit from it.
Thanks for the contribution!

[idanasher]

ok, but I can't seem to understand what to choose here in order to submit
the pull request:

On Wed, Sep 21, 2016 at 12:23 PM, Gil Amran [email protected]
wrote:

It would be great if you could create a pull request will all the
implementation that you mentioned so others will also benefit from it.
Thanks for the contribution!

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[gilamran]

• Click the "Fork" button on the top - right, to create a personal copy of DMT (Under your user)
• Clone your new fork (It will have a different git url)
• Do the code change, and push
• Go to your repository on github, and github will (Automagically) offer your to create a pull request out of your changes back to the original DMT repository.

feel free to ask if it's not clear

thanks