From 6fdb21b83d8a232376544e1c1015ee2023a94278 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Wed, 27 Jul 2022 16:34:27 +0200
Subject: Warn if X11 is not accelerated/running on llvmpipe

---
 src/mainwindow.cpp | 62 ++++++++++++++++++++++++++++++++++++------------------
 1 file changed, 42 insertions(+), 20 deletions(-)

(limited to 'src')

diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index a7bdb58..525242b 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -302,31 +302,53 @@ QSize MainWindow::createDistro(const QRect &max)
 
 bool MainWindow::createLogWindow()
 {
+    // HACK HACK: This doesn't really belong here at all :-/
+    // But we can only check this when X is running, so....
+    QProcess p;
+    p.start(QLatin1String("/usr/bin/glxinfo"), QStringList() << QLatin1String("-B"));
+    p.waitForFinished(1500);
+    QString str = QString::fromLocal8Bit(p.readAllStandardOutput());
+    if (str.contains("Device: llvmpipe") || str.contains("Accelerated: no")) {
+        int i = str.indexOf("Device: ");
+        int j = str.indexOf("\n", i);
+        str = QLatin1String("SLOW Graphics! ") + str.mid(i, j - i);
+    } else {
+        str = "";
+    }
     QString path = Settings::logMessageFile();
-    if (path.isEmpty())
-        return false;
-    QFile f(path);
-    if (f.size() == 0 || !f.open(QFile::ReadOnly))
+    if (path.isEmpty() && str.isEmpty())
         return false;
-    m_messages = new QTextEdit(this);
-    QTextStream stream(&f);
-    const QColor black(Qt::black);
-    while (!stream.atEnd()) {
-        bool ok = false;
-        QString line(stream.readLine());
-        int i = line.indexOf(' ');
-        if (i > 0) {
-            QString scol(line.left(i));
-            uint col = scol.toUInt(&ok, 16);
-            if (ok) {
-                m_messages->setTextColor(QColor(QRgb(col)));
-                line = line.mid(i + 1);
+    if (!path.isEmpty()) {
+        QFile f(path);
+        if ((f.size() == 0 || !f.open(QFile::ReadOnly)) && str.isEmpty())
+            return false;
+        m_messages = new QTextEdit(this);
+        QTextStream stream(&f);
+        const QColor black(Qt::black);
+        while (!stream.atEnd()) {
+            bool ok = false;
+            QString line(stream.readLine());
+            int i = line.indexOf(' ');
+            if (i > 0) {
+                QString scol(line.left(i));
+                uint col = scol.toUInt(&ok, 16);
+                if (ok) {
+                    m_messages->setTextColor(QColor(QRgb(col)));
+                    line = line.mid(i + 1);
+                }
             }
+            if (!ok) {
+                m_messages->setTextColor(black);
+            }
+            m_messages->append(line);
         }
-        if (!ok) {
-            m_messages->setTextColor(black);
+    }
+    if (!str.isEmpty()) {
+        if (m_messages == nullptr) {
+            m_messages = new QTextEdit(this);
         }
-        m_messages->append(line);
+         m_messages->setTextColor(Qt::red);
+        m_messages->append(str);
     }
     m_messages->setReadOnly(true);
     m_messages->setStyleSheet("border:none; background:rgba(255,255,255,.33); border-radius:5px");
-- 
cgit v1.2.3-55-g7522