Composition blocking on Linux

[ventyl]

Hello,
by default all SDL (therefore all love2d) applications sends a hint to the system to bypass the compositor. When making program in C/C++ this behavior can be changed via following line in code:

Code: Select all

SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0");

Can this be done in simple way in lua?

[ReFreezed]

You can access SDL functions through the FFI module. Should be pretty simple to do.

[AuahDark]

At conf.lua:

Code: Select all

local ffi = require("ffi")

ffi.cdef[[
int setenv(const char*, const char*, int);
]]

ffi.C.setenv("SDL_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR", "0")

Untested, but 100% not work in Windows.

[Shadowblitz16]

This doesn't seem to work for me on kubuntu 20.04.
The compositor still gets turned off and graphical glitches still happen.

I also tried doing...

Code: Select all

if love.system.getOS() == "linux" then
    local ffi = require("ffi")

    ffi.cdef[[
    int setenv(const char*, const char*, int);
    ]]

    ffi.C.setenv("SDL_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR", "0")
end

same result.

[Froyok]

Looks like it's working for me with Löve 11.3 on my Linux (Manjaro 5.15.12) using:

conf.lua

Code: Select all

function love.conf( Settings )
	local FFI = require("ffi")

	if FFI.os == "Linux" then
		FFI.cdef[[
			int setenv(const char*, const char*, int);
		]]

		FFI.C.setenv( "SDL_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR", "0", 1 )
	end

	-- The rest of your conf stuff below...
	Settings.console = true
end