consider the full bb with deco in rendering

src/Window.cpp

@@ -14,3 +14,33 @@ CWindow::~CWindow() {
         g_pCompositor->m_pLastWindow = nullptr;
     }
 }
+
+wlr_box CWindow::getFullWindowBoundingBox() {
+
+    SWindowDecorationExtents maxExtents;
+
+    for (auto& wd : m_dWindowDecorations) {
+
+        const auto EXTENTS = wd->getWindowDecorationExtents();
+
+        if (EXTENTS.topLeft.x > maxExtents.topLeft.x)
+            maxExtents.topLeft.x = EXTENTS.topLeft.x;
+
+        if (EXTENTS.topLeft.y > maxExtents.topLeft.y)
+            maxExtents.topLeft.y = EXTENTS.topLeft.y;
+
+        if (EXTENTS.bottomRight.x > maxExtents.bottomRight.x)
+            maxExtents.bottomRight.x = EXTENTS.bottomRight.x;
+
+        if (EXTENTS.bottomRight.y > maxExtents.bottomRight.y)
+            maxExtents.bottomRight.y = EXTENTS.bottomRight.y;
+    }
+
+    // Add extents to the real base BB and return
+    wlr_box finalBox = {m_vRealPosition.vec().x - maxExtents.topLeft.x,
+                        m_vRealPosition.vec().y - maxExtents.topLeft.y,
+                        m_vRealSize.vec().x + maxExtents.topLeft.x + maxExtents.bottomRight.x,
+                        m_vRealSize.vec().y + maxExtents.topLeft.y + maxExtents.bottomRight.y};
+    
+    return finalBox;
+}

src/Window.hpp

@@ -105,4 +105,7 @@ public:
         return m_uSurface.xdg == rhs.m_uSurface.xdg && m_uSurface.xwayland == rhs.m_uSurface.xwayland && m_vPosition == rhs.m_vPosition && m_vSize == rhs.m_vSize && m_bFadingOut == rhs.m_bFadingOut;
     }
 
+    // methods
+    wlr_box         getFullWindowBoundingBox();
+
 };

src/render/Renderer.cpp

@@ -32,7 +32,7 @@ void renderSurface(struct wlr_surface* surface, int x, int y, void* data) {
 }
 
 bool shouldRenderWindow(CWindow* pWindow, SMonitor* pMonitor) {
-    wlr_box geometry = {pWindow->m_vRealPosition.vec().x, pWindow->m_vRealPosition.vec().y, pWindow->m_vRealSize.vec().x, pWindow->m_vRealSize.vec().y};
+    wlr_box geometry = pWindow->getFullWindowBoundingBox();
 
     if (!wlr_output_layout_intersects(g_pCompositor->m_sWLROutputLayout, pMonitor->output, &geometry))
         return false;