Created
August 14, 2016 17:22
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| // simple easy shared access to callback and current attempted profile | |
| private static var supportsCallback:Function; | |
| private static var checkingProfile:String; | |
| public static function supportsProfile(nativeStage:flash.display.Stage, profile:String, callback:Function):void | |
| { | |
| supportsCallback = callback; | |
| checkingProfile = profile; | |
| if (nativeStage.stage3Ds.length > 0) { | |
| var stage3D:Stage3D = nativeStage.stage3Ds[0]; | |
| stage3D.addEventListener( flash.events.Event.CONTEXT3D_CREATE, supportsProfileContextCreatedListener, false, 10, true); | |
| stage3D.addEventListener(ErrorEvent.ERROR, supportsProfileContextErroredListener, false, 10, true); | |
| try | |
| { | |
| stage3D.requestContext3D("auto", profile); | |
| } | |
| catch (e:Error) | |
| { | |
| stage3D.removeEventListener( flash.events.Event.CONTEXT3D_CREATE, supportsProfileContextCreatedListener); | |
| stage3D.removeEventListener( ErrorEvent.ERROR, supportsProfileContextErroredListener); | |
| if (supportsCallback) supportsCallback(checkingProfile, false); | |
| } | |
| } | |
| else { | |
| // no Stage3D instances | |
| if (supportsCallback) supportsCallback(checkingProfile, false); | |
| } | |
| } | |
| private static function supportsProfileContextErroredListener(event:flash.events.ErrorEvent):void | |
| { | |
| var targetStage3D:Stage3D = event.target as Stage3D; | |
| if (targetStage3D) { | |
| targetStage3D.removeEventListener( flash.events.Event.CONTEXT3D_CREATE, supportsProfileContextCreatedListener); | |
| targetStage3D.removeEventListener( ErrorEvent.ERROR, supportsProfileContextErroredListener); | |
| } | |
| if (supportsCallback) supportsCallback(checkingProfile, false); | |
| } | |
| private static function supportsProfileContextCreatedListener(event:flash.events.Event):void | |
| { | |
| var targetStage3D:Stage3D = event.target as Stage3D; | |
| if (targetStage3D) { | |
| targetStage3D.removeEventListener( flash.events.Event.CONTEXT3D_CREATE, supportsProfileContextCreatedListener); | |
| targetStage3D.removeEventListener( ErrorEvent.ERROR, supportsProfileContextErroredListener); | |
| if (targetStage3D.context3D) { | |
| // the context is recreated as long as there are listeners on it, but there shouldn't be here. | |
| // Beginning with AIR 3.6, we can guarantee that with an additional parameter of false. | |
| var disposeContext3D:Function = targetStage3D.context3D.dispose; | |
| if (disposeContext3D.length == 1) disposeContext3D(false); | |
| else disposeContext3D(); | |
| if (supportsCallback) supportsCallback(checkingProfile, true); | |
| } | |
| } | |
| } | |
| private function onContextProfileChecked( profile:String, success:Boolean):void | |
| { | |
| if (success) { | |
| ... | |
| mStarling = new Starling(Game, stage, null, null, Context3DRenderMode.AUTO, profile); | |
| ... | |
| } | |
| else if (profile == Context3DProfile.BASELINE_EXTENDED) { | |
| // a delayed call has to be used, otherwise it seems current Stage3D is messed up | |
| // if you try and create a new request for a Context3D with a different profile too soon | |
| setTimeout(Main.supportsProfile, 100, this.stage, Context3DProfile.BASELINE, onContextProfileChecked); | |
| } | |
| else if (profile == Context3DProfile.BASELINE) { | |
| // a delayed call has to be used, otherwise it seems current Stage3D is messed up | |
| // if you try and create a new request for a Context3D with a different profile too soon | |
| setTimeout(Main.supportsProfile, 100, this.stage, Context3DProfile.BASELINE_CONSTRAINED, onContextProfileChecked); | |
| } | |
| else { | |
| // this would imply Context3D failed on BASELINE_CONSTRAINED or a profile string we didn't quite expect | |
| throw new ArgumentError("Failed to create a Context3D profile: " + profile); | |
| } | |
| } |
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