From f2e594358c6be6413050d8c7418ea3c8a429c60c Mon Sep 17 00:00:00 2001
From: Vlad Zahorodnii <vlad.zahorodnii@kde.org>
Date: Tue, 16 Aug 2022 13:39:18 +0300
Subject: [PATCH] Remove Platform::supportsOutputChanges()

If the platform does not support configuring outputs, applying a config
must fail. However, almost all output backends support output
configuring except, perhaps, the x11 backend, but that case doesn't
matter.
---
 src/backends/drm/drm_backend.cpp         | 1 -
 src/backends/virtual/virtual_backend.cpp | 1 -
 src/backends/wayland/wayland_backend.cpp | 1 -
 src/platform.h                           | 9 ---------
 4 files changed, 12 deletions(-)

diff --git a/src/backends/drm/drm_backend.cpp b/src/backends/drm/drm_backend.cpp
index 4118339bdf..09abc80457 100644
--- a/src/backends/drm/drm_backend.cpp
+++ b/src/backends/drm/drm_backend.cpp
@@ -85,7 +85,6 @@ DrmBackend::DrmBackend(Session *session, QObject *parent)
 {
     setSupportsPointerWarping(true);
     setSupportsGammaControl(true);
-    supportsOutputChanges();
 }
 
 DrmBackend::~DrmBackend() = default;
diff --git a/src/backends/virtual/virtual_backend.cpp b/src/backends/virtual/virtual_backend.cpp
index 1f1b726356..955a923a52 100644
--- a/src/backends/virtual/virtual_backend.cpp
+++ b/src/backends/virtual/virtual_backend.cpp
@@ -31,7 +31,6 @@ VirtualBackend::VirtualBackend(QObject *parent)
         }
     }
 
-    supportsOutputChanges();
     setSupportsPointerWarping(true);
     setSupportsGammaControl(true);
 }
diff --git a/src/backends/wayland/wayland_backend.cpp b/src/backends/wayland/wayland_backend.cpp
index 304d9c316b..ba14ea3d45 100644
--- a/src/backends/wayland/wayland_backend.cpp
+++ b/src/backends/wayland/wayland_backend.cpp
@@ -576,7 +576,6 @@ WaylandBackend::WaylandBackend(QObject *parent)
     , m_connectionThreadObject(new ConnectionThread(nullptr))
     , m_connectionThread(nullptr)
 {
-    supportsOutputChanges();
     connect(this, &WaylandBackend::connectionFailed, qApp, &QCoreApplication::quit);
 
 #if HAVE_WAYLAND_EGL
diff --git a/src/platform.h b/src/platform.h
index 6adead379d..7d1d1a1185 100644
--- a/src/platform.h
+++ b/src/platform.h
@@ -391,14 +391,6 @@ protected:
         m_supportsGammaControl = set;
     }
 
-    /**
-     * Whether the backend is supposed to change the configuration of outputs.
-     */
-    void supportsOutputChanges()
-    {
-        m_supportsOutputChanges = true;
-    }
-
 private:
     bool m_ready = false;
     QSize m_initialWindowSize;
@@ -409,7 +401,6 @@ private:
     EGLDisplay m_eglDisplay;
     EGLContext m_globalShareContext = EGL_NO_CONTEXT;
     bool m_supportsGammaControl = false;
-    bool m_supportsOutputChanges = false;
     CompositingType m_selectedCompositor = NoCompositing;
     Output *m_primaryOutput = nullptr;
 };