GetWindowScaleDPI() return {1,1} if HDPI or fullscreen modes

src/platforms/rcore_desktop_glfw.c

@@ -1024,8 +1024,23 @@ Vector2 GetWindowPosition(void)
 // Get window scale DPI factor for current monitor
 Vector2 GetWindowScaleDPI(void)
 {
-    Vector2 scale = {0};
-    glfwGetWindowContentScale(platform.handle, &scale.x, &scale.y);
+    Vector2 scale = {1.0, 1.0};
+
+    // On platforms, like Wayland, the window and its frameBuffer are automatically rescaled
+    // according to the current DPI scale of the display on which the window is visible, 
+    // `glfwGetWindowContentScale()` will always return `{1.0, 1.0}`, because there is no need
+    // for the applciation to apply any DPI rescaling by itself.
+    // So, to keep consistency among all supported platforms, if `FLAG_WINDOW_HIGHDPI` is enabled
+    // we ignore the value returned by `glfwGetWindowContentScale()` and return `{1.0, 1.0}` instead.
+    // Same if we are in an hardware/exclusive fullscreen mode.
+
+    if (!IsWindowState(FLAG_WINDOW_HIGHDPI) && !CORE.Window.fullscreen) 
+    {
+        // We only need to know the DPI scale of the display if we want to rescale our UI and texts manually by code.
+
+        glfwGetWindowContentScale(platform.handle, &scale.x, &scale.y);
+    }
+
     return scale;
 }