Box Light Stops Working After Move/Rotate

[Monkey Frog Studio]

I've run into an issue where the box light shows up in the 3D viewport, but doesn't in a test game. This often occurs after the box light has been placed and then, later, moved or rotated. So, if I create a box light and position initially, then run a test game, it shows up fine. But if I then move or rotate the box light, it fails to work in test game even though it continues to show correctly in the 3D viewport (see screen shot).

[Monkey Frog Studio]

This appears to be happening when you tick Cast Shadows to False. Works fine if Cast Shadows is active.

[Josh]

I can produce this error with this scene. You are right, it only happens when shadows are disabled...

boxlighterror.zip

[Monkey Frog Studio]

Glad this was helpful.

[Josh]

This also happens if you just open the map in the editor.

The cause is around line 145 of Shaders/PBR/Lighting.glsl:

if (shadowCoord.x < 0.0f || shadowCoord.y < 0.0f || shadowCoord.x > 1.0f || shadowCoord.y > 1.0f || shadowCoord.z < shadowrange.x || shadowCoord.z > shadowrange.y) return lighttype;

Ah, okay, it is due to the lack of any shadow range value I think...

|| shadowCoord.z < shadowrange.x || shadowCoord.z > shadowrange.y

Something like that...I will continue to look for the exact cause...

[Josh]

Fixed in next build.

[Monkey Frog Studio]

Seems there's another issue, possibly related. 

I created a lightbox, unticked Cast Shadows (so it's False). That one works fine. Can move it, rotate it, etc., and it updates in the viewport. However, if I use the move tool and drag out a copy (holding SHIFT) the new one does not cast any light at all. If I then go to the Scene panel and tick Cast Shadow on then off again, it works. I have to do this for each duplicate I create. 

This does not happen when creating a new lightbox since they come in automatically with Cast Shadows ticked. 

To emphasize - if a shadowbox has Cast Shadow unticked (False) and you duplicate it, it will not show any light. You have to tick then untick Cast Shadow if you want the lightbox to create a light but not cast a shadow.

[Josh]

I am pretty sure that won't happen in the next build that goes up.

[Monkey Frog Studio]

I can confirm that it all seems to be working correctly now. Thanks for the update!