[SOLVED] Enabled Objects not immediately visible in WidgetSpriteViewport

[simon.wade_]

We have a piece of Unigine Script which looks roughly like this:

 

Node nodeA, nodeB;

 

nodeA.setEnabled(0);

nodeB.setEnabled(1);

 

If the world is being viewed through a WidgetSpriteViewport, and this code is called, for a split second both nodes are invisible. This behaviour is not seen when rendering the world normally; I would've expected this to occur "atomically" in both cases.

 

This is using the 64bit version of Unigine (The log file says the binary is: Windows 64bit Visual C++ 1600 Release Apr 11 2012 r8850).

[manguste]

Can you please send us a test scene so we can reproduce this problem?

[simon.wade_]

OK, so here's a test I've tried to throw together. If you load this up, open the console, then try the command "toggle_switch", with some luck you'll eventually see the issue. I've limited the framerate of the WidgetSpriteViewport because this makes it really clear when you see a frame with neither node being visible.

 

In our software this actually occurs almost every time, but there's a lot more content involved in that case. With this example I've sometimes had to try upwards of 40 times before the issue occurs.

railtest.zip

[manguste]

Yep, I've reproduced this issue, indeed, for a sec they disappear. Will pass it to our developers for them to dig into it or suggest a workaround.

[manguste]

At last we've found what was missing :)

main.setEnabled(!main.isEnabled());
branch.setEnabled(!branch.isEnabled());
// You need to add this into your code.
engine.world.updateSpatial();