Hi to all,

I'm enjoying Stellar Tactics on my Gaming Laptop a lot. But I have serious problems with shadows on my laptop. I can only play Stellar Tactics with Hard Shadows, possibly also with no shadows(which is rather ugly). As soon as I enable Soft Shadows ca, 10 Minutes later, the game gets a one-time hickup and then some textures disappear and you can only see black holes(squares) instead. Then suddenly the whole screen goes black and the game will stop running or the game starts flickering and stops then.
I googled a lot, but got no idea how to fix this issue by configuration. Then I came across the requirements of Stellar Tactics and as a minimum OpenGL is required and DirectX is preferred. But it looks like, that only OpenGL is tested and not DirectX when the game starts. Perhaps with DirectX, the problem with the shadows will disappear. But I found no way to force Stellar Tactics to use DirectX. Does someone know, how to do this?

My hardware configuration:
CPU: AMD Ryzen 9 6900HX
dGPU: NVIDIA GeForce RTX 3060 Laptop GPU
RAM: 16 GB
Hard drive: NVME-SSD
OS: Fedora 42 with kernel 6.14 and Wayland
Runtime environment: GE-Proton 9.27


PS: with Hard Shadows, I will get the black squares too, but the game won't stop running and some textures got wrong colors. Going back to main menu and reloading the save game will eliminate the texture issue.

Ok, Thanks for clarification! For proton you have Vulkan(DXVK/VKD3D) for DirectX and OpenGL for OpenGL. In my case, the native OpenGL implementation of NVIDIA is used, so I'm quite sure that SSAO and shadows are supported. For Vulkan, it's the same, the native Vulkan implementation from NVIDIA is used. Therefore, you have a comparable performance under linux, depending on the game It could be, that setting "GDK_GL=gles" as mentioned in the provided link was exactly what I was looking for. I made a quick test and it looks very, very promising. Thank you very much! I didn't had the idea, that it could be an issue with NVIDIA and Wayland.

Unfortunately, this wasn't the solution. Thank you very much for your efforts!