From 88b63a00b68350d6d001445357a2582ab5975f9c Mon Sep 17 00:00:00 2001
From: Vaxry <43317083+vaxerski@users.noreply.github.com>
Date: Thu, 28 Sep 2023 21:48:33 +0100
Subject: renderer: Tearing implementation (#3441)

---
 src/helpers/SubsurfaceTree.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/helpers/SubsurfaceTree.cpp')

diff --git a/src/helpers/SubsurfaceTree.cpp b/src/helpers/SubsurfaceTree.cpp
index 5e3e9e67..5b86f928 100644
--- a/src/helpers/SubsurfaceTree.cpp
+++ b/src/helpers/SubsurfaceTree.cpp
@@ -245,6 +245,15 @@ void Events::listener_commitSubsurface(void* owner, void* data) {
 
     if (pNode->pSurface && pNode->pSurface->exists())
         g_pHyprRenderer->damageSurface(pNode->pSurface->wlr(), lx, ly, SCALE);
+
+    if (pNode->pWindowOwner) {
+        // tearing: if solitary, redraw it. This still might be a single surface window
+        const auto PMONITOR = g_pCompositor->getMonitorFromID(pNode->pWindowOwner->m_iMonitorID);
+        if (PMONITOR->solitaryClient == pNode->pWindowOwner && pNode->pWindowOwner->canBeTorn() && PMONITOR->canTear) {
+            PMONITOR->nextRenderTorn = true;
+            g_pHyprRenderer->renderMonitor(PMONITOR);
+        }
+    }
 }
 
 void Events::listener_destroySubsurface(void* owner, void* data) {
-- 
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