[Solved] Sometimes depth write only doesn't work

[Ray1184]

Ogre Version: 13.2.3
Operating System: Windows 10
Render System: OpenGL

Hello,
I'm asking here because of a strange behavior in depth write.
In my engine I use the depth only write on materials to simulate old 2.5D adventures, such alone in the dark trilogy, resident evil etc...
So, I use an entity with depth write only material, and I draw a background with the scene rendering.
I created this helper method:

Code: Select all

inline static void SetWriteDepthOnly(Ogre::Entity* entity)
        {
            auto material = entity->getSubEntity(0)->getMaterial();
            material->getTechnique(0)->getPass(0)->setColourWriteEnabled(false);
            material->getTechnique(0)->getPass(0)->setDepthWriteEnabled(true);
        }

This simple system does its job most of the time, but, I don't know why, more or less 5% of the time (in any case very reraly), when I start my engine, depth write is not working, as if depth write flag was not be setted. If I close the window and start again, It works without any problem.
Could it be that I forgot something? Maybe there's a more stable and better solution for managing this?

Thanks a lot

[paroj]

is your app threaded? Do you use the RTSS?

[Ray1184]

Hi, my app is single thread, and I'm not using RTSS, but standard material system

[Ray1184]

UPDATE: I tried to play a bit with rendering bucket and maybe (I hope) it's solved.
Probabily sometimes these "depth only" entities are rendered after the standard entities and depth test fails for some reasons (I don't know why...)
Setting in depth entites a lower value then standard entities for rendering group, seems solving the problem.

In any case thanks for support!