When I full screen with Starlight and a good shaders
and entity optimization mod called Iris, it crashes in a manner
that no logs are created and the screen turns black, yet
everything else runs fine including the Minecraft music,
pigs and Elisia the little block hen, even a web server or
a Minecraft server would run perfectly fine.

Cannot reproduce on GTX 1650 via Prismarine Shaders. (Are your mods up-to-date? + What drivers are you using?)

@Kichura I tried Iris + Starlight + Prismarine Shaders with GTX 1070 (460.91.03) and all I got is this 95% opaque white screen seen above

Did you make any changes to the config?

I use intel integrated graphics on windows.

And I don't use sodium for I hate the sodium video settings menu

@Kichura I tried Iris + Starlight + Prismarine Shaders with GTX 1070 (460.91.03) and all I got is this 95% opaque white screen seen above

Did you make any changes to the config?

I disabled clouds via the settings file as that's what the shader author told me to do. (see libs/settings.glsl -> #define clouds)

I use intel integrated graphics on windows.

Update your driver if you can and try running mc with just starlight in case. + Does the black fullscreen apply to other shaders or any even without?

I use skylec and complimentary shaders, both
don't work but I do have clouds turned on.

Unless this is a custom compile or a fork they are also using sodium, but a list of mods would help

I cannot confirm this issue on intel/windows with the same shaderpack listed

And I don't use sodium for I hate the sodium video settings menu

Press shift p on video settings and there you can use vanilla video settings lol

Press shift p on video settings and there you can use vanilla video settings lol

Really? If that works, then THANK YOU.