Transparent windows don't translate well to multigrid.

[FlafyDev]

Is your feature request related to a problem? Please describe.
In Neovim I have my Telescope window transparent like this:

But when enabling Multigrid, because it makes all windows see through, the Telescope window merges with the contents behind, making it unreadable.

Describe the solution you'd like
I'd like to be able to choose whether or not I want floating windows to be see through. Currently the only way to hide the content behind them is by setting a background color to the floating window, which doesn't solve my issue.

Describe alternatives you've considered
Another solution would be being able to set the opacity for the content behind the floating window.

Additional context
I think this can be easily understood from the screenshots, but I insist on making my floating windows transparent because my terminal is also transparent and I'd like the regular windows and the floating windows to share the same background, which isn't a solid color.

[MultisampledNight]

Thanks for reporting!

Depending on if you're running on git main, this is actually already implemented through the neovim winblend option. It controls the transparency of floating windows, similarly the pumblend option does this for pop-up menus.

A release containing the change respecting these two options will probably be pushed tomorrow, though who knows when that'll get into nixpkgs.

Let me know if that's actually missing the point you're having, because 100% transparency without blur is in no case the default I believe.

[FlafyDev]

Thanks for reporting!

Depending on if you're running on git main, this is actually already implemented through the neovim winblend option. It controls the transparency of floating windows, similarly the pumblend option does this for pop-up menus.

A release containing the change respecting these two options will probably be pushed tomorrow, though who knows when that'll get into nixpkgs.

Let me know if that's actually missing the point you're having, because 100% transparency without blur is in no case the default I believe.

Oh, I'm actually using a fork of 0.9.0 so I can use Neovide in Wayland(wlroots). Was kind of stupid of me to report before trying to update to the latest version first...

I'll try to update and then respond here again

[MultisampledNight]

Most floating windows can be configured globally through the winblend option in a range between 0 (opaque) and 100 transparent, telescope however uses its configuration option telescope.defaults.winblend instead, see :help telescope.defaults.winblend. Example configuration of telescope would be

require("telescope").setup({
    defaults = {
      winblend = 70
    }
})

Closing as most likely outdated.