2 files changed, 8 insertions, 5 deletions
diff --git a/src/frontend/qt_sdl/AudioSettingsDialog.ui b/src/frontend/qt_sdl/AudioSettingsDialog.ui
index c4e993e..9ae8baa 100644
--- a/src/frontend/qt_sdl/AudioSettingsDialog.ui
+++ b/src/frontend/qt_sdl/AudioSettingsDialog.ui
@@ -60,12 +60,15 @@
           <height>0</height>
          </size>
         </property>
+        <property name="whatsThis">
+         <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Forward a WAV file to the emulated microphone.&lt;/p&gt;&lt;p&gt;This input mode is activated by holding the microphone hotkey (see Input and Hotkeys).&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+        </property>
        </widget>
       </item>
       <item row="3" column="0">
        <widget class="QRadioButton" name="rbMicWav">
         <property name="whatsThis">
-         <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Forward a WAV file to the emulated microphone.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+         <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Forward a WAV file to the emulated microphone.&lt;/p&gt;&lt;p&gt;This input mode is activated by holding the microphone hotkey (see Input and Hotkeys).&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
         </property>
         <property name="text">
          <string>WAV file:</string>
@@ -92,7 +95,7 @@
       <item row="2" column="0" colspan="3">
        <widget class="QRadioButton" name="rbMicNoise">
         <property name="whatsThis">
-         <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Noise will be forwarded to the emulated microphone, simulating blowing into the microphone.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+         <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Noise will be forwarded to the emulated microphone, simulating blowing into the microphone.&lt;/p&gt;&lt;p&gt;This input mode is activated by holding the microphone hotkey (see Input and Hotkeys).&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
         </property>
         <property name="text">
          <string>Blow noise</string>
diff --git a/src/frontend/qt_sdl/main.cpp b/src/frontend/qt_sdl/main.cpp
index f282310..20084ff 100644
--- a/src/frontend/qt_sdl/main.cpp
+++ b/src/frontend/qt_sdl/main.cpp
@@ -874,15 +874,15 @@ void ScreenPanelGL::paintGL()
 {
     int w = width();
     int h = height();
+    float factor = devicePixelRatioF();
 
     glClear(GL_COLOR_BUFFER_BIT);
 
-    // TODO: check hiDPI compliance of this
-    glViewport(0, 0, w, h);
+    glViewport(0, 0, w*factor, h*factor);
 
     screenShader->bind();
 
-    screenShader->setUniformValue("uScreenSize", (float)w, (float)h);
+    screenShader->setUniformValue("uScreenSize", (float)w*factor, (float)h*factor);
 
     int frontbuf = GPU::FrontBuffer;
     glActiveTexture(GL_TEXTURE0);