Pavel Rojtberg

> the remaining bottleneck is likely in findVisibleNodes - more profiling needed. yep.. Animated config: | Ogre 1.12 | Ogre 2.0 | |--------------|-------------| |  |  |

```cpp mTerrainGlobals->setCastsDynamicShadows(true); ``` for 1.7 behaviour

> but I get this: does not happen in Ogre 14

> but this seems to be a new one: this is the screenshot you posted above. The workaround is the setting I posted above *for ogre 14*

thanks for investigating! However, given that the config dialog itself is optional (only compiled if Xaw is installed) and requires X11, I would rather drop Xaw from the list of...

try setting this to 1 https://github.com/OGRECave/ogre/blob/3f0a656c7065f4167ad4d9d5fcbfbe6baa569aee/RenderSystems/Vulkan/src/OgreVulkanRenderSystem.cpp#L55 there should be some output of what is going wrong

the error seem to be unrelated to the visual artifact. My guess would be that this is something with how we do `HBL_DISCARD` on Vulkan. However all works for me...

to further help debug this, you could try getting a https://renderdoc.org/ capture of a broken frame.

will have to reproduce this locally at some point, I guess.. 

I have just updated the ogre snap https://snapcraft.io/ogre such that it works with mesa vulkan drivers. could you check whether it produces the same errors for you?