renderer: don't render window on other mons during anim in

fixes #5139

src/Window.cpp

@@ -524,6 +524,7 @@ void CWindow::onMap() {
                                           "CWindow");
 
     m_vReportedSize = m_vPendingReportedSize;
+    m_bAnimatingIn  = true;
 
     for (const auto& ctrl : g_pHyprRenderer->m_vTearingControllers) {
         if (ctrl->pWlrHint->surface != m_pWLSurface.wlr())

src/Window.hpp

@@ -296,6 +296,7 @@ class CWindow {
     Vector2D                 m_vOriginalClosedPos;  // these will be used for calculations later on in
     Vector2D                 m_vOriginalClosedSize; // drawing the closing animations
     SWindowDecorationExtents m_eOriginalClosedExtents;
+    bool                     m_bAnimatingIn = false;
 
     // For pinned (sticky) windows
     bool m_bPinned = false;

src/events/Windows.cpp

@@ -36,6 +36,9 @@ void setAnimToMove(void* data) {
     CBaseAnimatedVariable* animvar = (CBaseAnimatedVariable*)data;
 
     animvar->setConfig(PANIMCFG);
+
+    if (animvar->getWindow() && !animvar->getWindow()->m_vRealPosition.isBeingAnimated() && !animvar->getWindow()->m_vRealSize.isBeingAnimated())
+        animvar->getWindow()->m_bAnimatingIn = false;
 }
 
 void Events::listener_mapWindow(void* owner, void* data) {

src/helpers/AnimatedVariable.hpp

@@ -52,6 +52,7 @@ class CWorkspace;
 struct SLayerSurface;
 struct SAnimationPropertyConfig;
 class CHyprRenderer;
+class CWindow;
 
 // Utility to define a concept as a list of possible type
 template <class T, class... U>
@@ -135,6 +136,10 @@ class CBaseAnimatedVariable {
         m_bRemoveEndAfterRan   = false;
     }
 
+    CWindow* getWindow() {
+        return (CWindow*)m_pWindow;
+    }
+
   protected:
     void*                                 m_pWindow    = nullptr;
     void*                                 m_pWorkspace = nullptr;

src/render/Renderer.cpp

@@ -524,6 +524,10 @@ void CHyprRenderer::renderWindow(CWindow* pWindow, CMonitor* pMonitor, timespec*
         g_pHyprOpenGL->m_RenderData.clipBox = rg.getExtents();
     }
 
+    // if window is tiled and it's flying in, don't render on other mons (for slide)
+    if (!ignorePosition && !pWindow->m_bIsFloating && pWindow->m_vRealPosition.isBeingAnimated() && pWindow->m_bAnimatingIn && pWindow->m_iMonitorID != pMonitor->ID)
+        return;
+
     // render window decorations first, if not fullscreen full
     if (mode == RENDER_PASS_ALL || mode == RENDER_PASS_MAIN) {