From f823be570c7274beeae4eb97aa2fa6869745fbf1 Mon Sep 17 00:00:00 2001
From: Vlad Zahorodnii <vlad.zahorodnii@kde.org>
Date: Tue, 28 Apr 2020 20:19:08 +0300
Subject: [PATCH] Make Compositor more verbose

Summary:
In order to help with debugging why the OpenGL scene is not loaded,
it can be really helpful to know what scenes the Compositor attempts to
load.

Test Plan: Ran kwin with QT_LOGGING_RULES="*.debug=true".

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D29261
---
 composite.cpp | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/composite.cpp b/composite.cpp
index 0243688cd0..243e89e603 100644
--- a/composite.cpp
+++ b/composite.cpp
@@ -221,7 +221,25 @@ bool Compositor::setupStart()
 
     const auto availablePlugins = KPluginLoader::findPlugins(QStringLiteral("org.kde.kwin.scenes"));
 
+    for (const KPluginMetaData &pluginMetaData : availablePlugins) {
+        qCDebug(KWIN_CORE) << "Available scene plugin:" << pluginMetaData.fileName();
+    }
+
     for (auto type : qAsConst(supportedCompositors)) {
+        switch (type) {
+        case XRenderCompositing:
+            qCDebug(KWIN_CORE) << "Attempting to load the XRender scene";
+            break;
+        case OpenGLCompositing:
+        case OpenGL2Compositing:
+            qCDebug(KWIN_CORE) << "Attempting to load the OpenGL scene";
+            break;
+        case QPainterCompositing:
+            qCDebug(KWIN_CORE) << "Attempting to load the QPainter scene";
+            break;
+        case NoCompositing:
+            Q_UNREACHABLE();
+        }
         const auto pluginIt = std::find_if(availablePlugins.begin(), availablePlugins.end(),
             [type] (const auto &plugin) {
                 const auto &metaData = plugin.rawData();