From 1651b02cc1c86a170162709981694558fc16dcc4 Mon Sep 17 00:00:00 2001
From: Vaxry <vaxry@vaxry.net>
Date: Thu, 2 May 2024 15:17:04 +0100
Subject: [PATCH] core: update renderer on late scale changes

ref https://github.com/hyprwm/Hyprland/issues/5842, in case a compositor sends the scale after configure
---
 src/core/LockSurface.cpp | 7 +++++++
 src/core/LockSurface.hpp | 1 +
 2 files changed, 8 insertions(+)

diff --git a/src/core/LockSurface.cpp b/src/core/LockSurface.cpp
index d0acd5f..8446354 100644
--- a/src/core/LockSurface.cpp
+++ b/src/core/LockSurface.cpp
@@ -17,6 +17,9 @@ static void handlePreferredScale(void* data, wp_fractional_scale_v1* wp_fraction
     const auto PSURF       = (CSessionLockSurface*)data;
     PSURF->fractionalScale = scale / 120.0;
     Debug::log(LOG, "got fractional {}", PSURF->fractionalScale);
+
+    if (PSURF->readyForFrame)
+        PSURF->onScaleUpdate();
 }
 
 static const wp_fractional_scale_v1_listener fsListener = {
@@ -103,6 +106,10 @@ void CSessionLockSurface::configure(const Vector2D& size_, uint32_t serial_) {
     render();
 }
 
+void CSessionLockSurface::onScaleUpdate() {
+    configure(size, serial);
+}
+
 static void handleDone(void* data, wl_callback* wl_callback, uint32_t callback_data) {
     const auto PSURF = (CSessionLockSurface*)data;
 
diff --git a/src/core/LockSurface.hpp b/src/core/LockSurface.hpp
index 2f93521..046b971 100644
--- a/src/core/LockSurface.hpp
+++ b/src/core/LockSurface.hpp
@@ -24,6 +24,7 @@ class CSessionLockSurface {
 
     void  render();
     void  onCallback();
+    void  onScaleUpdate();
 
   private:
     COutput*                     output      = nullptr;