App freezes with no drawing to screen

[ljbade]

When the app starts the window opens and nothing gets drawn. The apps seems to freeze.

I examined the back trace and it was sitting in the Map UV loop doing nothing.

A few debug prints that the first call to asyncRender() does not trigger a render() which stops the rendering loop starting.

The issue appears that the check at https://github.com/mapbox/mapbox-gl-native/blob/master/src/mbgl/map/map.cpp#L164:
if (state.hasSize()) which is false

[ljbade]

state is set at https://github.com/mapbox/mapbox-gl-native/blob/master/src/mbgl/map/map.cpp#L602

[ljbade]

It seems resize() is called with 0 width and height which is why hasSize fails.

[ljbade]

Resizing the window does trigger resize() with valued but only transform gets updated not state so render() still does not get called.

@jfirebaugh This doesn't seem right?

[ljbade]

Here is the zero resize offender: https://github.com/mapbox/mapbox-gl-native/blob/master/platform/default/glfw_view.cpp#L67

[jfirebaugh]

Looks like this regressed as part of #718. We have two PRs for this now, #742 and #747. :)

[ljbade]

@jfirebaugh oh did not see the dupe, lol