Remove decorations when fullscreen

src/wl_window.c

@@ -279,7 +279,7 @@ static void resizeWindow(_GLFWwindow* window, int width, int height)
 {
     wl_egl_window_resize(window->wl.native, width, height, 0, 0);
 
-    if (!_glfw.wl.viewporter)
+    if (!_glfw.wl.viewporter || !window->wl.decorations.top.surface)
         return;
 
     // Top decoration.
@@ -443,6 +443,7 @@ static GLFWbool createSurface(_GLFWwindow* window,
     if (!window->wl.transparent)
         setOpaqueRegion(window);
 
+    if (window->decorated && !window->monitor)
         createDecorations(window);
 
     return GLFW_TRUE;
@@ -937,6 +938,8 @@ void _glfwPlatformGetFramebufferSize(_GLFWwindow* window, int* width, int* heigh
 void _glfwPlatformGetWindowFrameSize(_GLFWwindow* window,
                                      int* left, int* top,
                                      int* right, int* bottom)
+{
+    if (window->decorated && !window->monitor)
     {
         if (top)
             *top = _GLFW_DECORATION_TOP;
@@ -947,6 +950,7 @@ void _glfwPlatformGetWindowFrameSize(_GLFWwindow* window,
         if (bottom)
             *bottom = _GLFW_DECORATION_WIDTH;
     }
+}
 
 void _glfwPlatformGetWindowContentScale(_GLFWwindow* window,
                                         float* xscale, float* yscale)
@@ -1108,12 +1112,15 @@ void _glfwPlatformSetWindowResizable(_GLFWwindow* window, GLFWbool enabled)
 }
 
 void _glfwPlatformSetWindowDecorated(_GLFWwindow* window, GLFWbool enabled)
+{
+    if (!window->monitor)
     {
         if (enabled)
             createDecorations(window);
         else
             destroyDecorations(window);
     }
+}
 
 void _glfwPlatformSetWindowFloating(_GLFWwindow* window, GLFWbool enabled)
 {