From 334d0ae31b9b192b6d8c35a40bc83f9076d22b9d Mon Sep 17 00:00:00 2001
From: Vaxry <vaxry@vaxry.net>
Date: Fri, 24 Nov 2023 13:45:10 +0000
Subject: [PATCH] monitor: fix transform matrix calculations for transformed

fixes #3929
---
 src/helpers/Monitor.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/helpers/Monitor.cpp b/src/helpers/Monitor.cpp
index 833a7a5a..f626bb3d 100644
--- a/src/helpers/Monitor.cpp
+++ b/src/helpers/Monitor.cpp
@@ -647,7 +647,7 @@ Vector2D CMonitor::middle() {
 void CMonitor::updateMatrix() {
     wlr_matrix_identity(projMatrix.data());
     if (transform != WL_OUTPUT_TRANSFORM_NORMAL) {
-        wlr_matrix_translate(projMatrix.data(), vecTransformedSize.x / 2.0, vecTransformedSize.y / 2.0);
+        wlr_matrix_translate(projMatrix.data(), vecPixelSize.x / 2.0, vecPixelSize.y / 2.0);
         wlr_matrix_transform(projMatrix.data(), transform);
         wlr_matrix_translate(projMatrix.data(), -vecTransformedSize.x / 2.0, -vecTransformedSize.y / 2.0);
     }