Only render when we need to about mapbox-gl-native HOT 11 CLOSED

Assuming that on iOS, this means a move to a dirty flag which necessitates a call to render()?

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We should be able to solve this on OS X by posting an NSNotification upon tile load success which calls render().

I will work on iOS first -- this should move to a CADisplayLink for UITouch tracking + the above notification approach for tile loads.

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@incanus I've had got success setting paused = true on the GLKViewController on iOS.

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I was experimenting with pausing the CADisplayLink directly, but pausing the VC is my next bet.

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[self performSelector:@selector(stopRender) withObject:nil afterDelay:3.0];

why do do this?

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Yeah I've been thinking about this, that it's somewhat unconventional, and how to best start/stop rendering. This buys a few seconds of render passes after significant actions (gestures, tile loads, etc.) which had caused an update. We may be able to just stopRender directly, or possibly with afterDelay:0, which means the next pass of the run loop.

I will reopen this to flag that I should take another look -- was just on my mental todo before.

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Nah, this is a good way to do this. Actions which require render updates (gestures, tile loads, etc.) un-pause the display link passes, as well as cancel previous requests to re-pause the passes. Once things die down, a (three second) future re-pause call kicks in and stops renders until the next significant action.

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I'm concerned that 3 seconds is an arbitrary value. Instead, we should algorithmically determine if we need a rerender (like on WebGL).

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Ok. Lower priority, but I'll take another pass at this. We might be fighting GLKView's own benefits.

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This is superseded by #161.

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This is also done by moving to libuv, so not related to GLKit (which is iOS specific anyway).

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