Static batching not working as expected

Graphics
1

Hi there !

I’m working on a mobile game, and i’m experiencing some strange issue with the static batching.
I have some prefabs with a lot of little objets inside it, with the static batching checkbox ticked. Sometimes it works fine and I have only one draw call, and sometimes (when i move the camera) more than 20 draw calls.

I don’t understand, i have only one texture and one material for the scene.

One draw call :

1091351--40945--$batching_1.jpg
1091351--40945--$batching_1.jpg1088×947 72.4 KB

20 draw calls :

1091351--40944--$batching_2.jpg
1091351--40944--$batching_2.jpg1088×947 72.3 KB

Your help would be greatly appreciated :slight_smile: !

2

Up

3

Do the draw calls go up in play mode in the editor or just on the target device?

A bug report with a repro project would be appreciated:
http://unity3d.com/BugReportingFAQ

4

Ok, doesn’t seem to occur when built on a mobile device (Android, HTC One X), but on a pc build the number of draw calls is increasing when the camera is zooming out.

1093170–41058–$batching.zip (4.22 MB)

Here’s a test project. I will submit a bug report too.

5

Thanks. I checked that it draws the scene with one draw call in Unity 4, but 3.5.6 has more calls than expected. We’ll check out the bug report.

6

It turns out that 3.5.6 breaks batches around the shadow distance, even with shadows disabled. We fixed that in 4.0 but apparently not 3.5.6. Mobile builds are not affected.

A workaround is to set the Shadow Distance in Quality settings to either zero or some large value.