Refactoring the GPU acceleration implementation

Dockerfile

@@ -38,6 +38,7 @@ ARG IMG_TYPE=google_apis
 ARG ARCHITECTURE=x86_64
 ARG CMD_LINE_VERSION=9477386_latest
 ARG DEVICE_ID=pixel
+ARG GPU_ACCELERATED=false
 
 # Environment variables.
 ENV ANDROID_SDK_ROOT=/opt/android \
@@ -47,8 +48,8 @@ ENV ANDROID_SDK_ROOT=/opt/android \
 		DEVICE_ID=$DEVICE_ID \
     ARCHITECTURE=$ARCHITECTURE \
     ABI=${IMG_TYPE}/${ARCHITECTURE} \
+    GPU_ACCELERATED=$GPU_ACCELERATED \
     QTWEBENGINE_DISABLE_SANDBOX=1 \
-    DISPLAY=:99 \
     ANDROID_EMULATOR_WAIT_TIME_BEFORE_KILL=10
 
 # Exporting environment variables for keeping in the path

scripts/start-emulator.sh

@@ -23,13 +23,21 @@ export USER=root
 # Creating the Android Virtual Emulator.
 echo "Creating the Android Virtual Emulator ..."
 echo "Using package '$PACKAGE_PATH', ABI '$ABI' and device '$DEVICE_ID' for creating the emulator"
-echo no | avdmanager create avd -n android --abi "$ABI" -k "$PACKAGE_PATH" --device "$DEVICE_ID"
+echo no | avdmanager create avd -f -n android --abi "$ABI" -k "$PACKAGE_PATH" --device "$DEVICE_ID"
 
-Xvfb "$DISPLAY" -screen 0 1920x1080x16 -nolisten tcp &
+# If GPU acceleration is enabled, we create a virtual framebuffer
+# to be used by the emulator when running with GPU acceleration.
+if [ "$GPU_ACCELERATED" == "true" ]; then
+  echo "Running with GPU acceleration enabled"
+  export DISPLAY=":0.0"
+  export GPU_MODE="host"
+  Xvfb "$DISPLAY" -screen 0 1920x1080x16 -nolisten tcp &;
+else
+  export GPU_MODE="auto"
+fi
 
 # Asynchronously write updates on the standard output
 # about the state of the boot sequence.
-#cat ~/.android/avd/android.avd/config.ini
 wait_for_boot &
 
 # Start the emulator with no audio, no GUI, and no snapshots.
@@ -37,9 +45,7 @@ echo "Starting the emulator ..."
 emulator \
   -verbose \
   -avd android \
-  -gpu host \
+  -gpu "$GPU_MODE" \
   -no-boot-anim \
   -no-window \
-  -no-snapshot-save \
+  -no-snapshot-save || update_state "ANDROID_STOPPED"
-  -qemu \
-  -enable-kvm || update_state "ANDROID_STOPPED"