From bec50eaec04258b9a5df6ac4179dee6459dd1ad3 Mon Sep 17 00:00:00 2001
From: Aleix Pol <aleixpol@kde.org>
Date: Wed, 9 Jun 2021 11:52:03 +0200
Subject: [PATCH] deform effect: Use the provided matrix instead of creating a
 new one

---
 src/libkwineffects/kwindeformeffect.cpp | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/libkwineffects/kwindeformeffect.cpp b/src/libkwineffects/kwindeformeffect.cpp
index dcd46408e9..cc5a19d0fe 100644
--- a/src/libkwineffects/kwindeformeffect.cpp
+++ b/src/libkwineffects/kwindeformeffect.cpp
@@ -148,9 +148,7 @@ void DeformEffectPrivate::paint(EffectWindow *window, GLTexture *texture, const
     const qreal rgb = data.brightness() * data.opacity();
     const qreal a = data.opacity();
 
-    const QRect screenRect = effects->virtualScreenGeometry();
-    QMatrix4x4 mvp;
-    mvp.ortho(0, screenRect.width(), screenRect.height(), 0, 0, 65535);
+    QMatrix4x4 mvp = data.screenProjectionMatrix();
     mvp.translate(window->x(), window->y());
     shader->setUniform(GLShader::ModelViewProjectionMatrix, mvp);
     shader->setUniform(GLShader::ModulationConstant, QVector4D(rgb, rgb, rgb, a));