ffi/sdl: tweak support for EMULATE_BW_SCREEN (#1835)

Check for a non-empty value.
koreader · Jun 22, 2024 · f80dc33 · f80dc33
1 parent 00340bd
commit f80dc33
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/ffi/framebuffer_SDL2_0.lua b/ffi/framebuffer_SDL2_0.lua
@@ -18,7 +18,7 @@ function framebuffer:init()
     else
         self.bb = BB.new(600, 800)
     end
-    if os.getenv("EMULATE_BW_SCREEN") then
+    if (os.getenv("EMULATE_BW_SCREEN") or "") ~= "" then
         self.device.hasColorScreen = function() return false end
         self.isColorEnabled = function() return false end
     end