1 files changed, 84 insertions, 0 deletions
diff --git a/libs/renderengine/skia/debug/record.sh b/libs/renderengine/skia/debug/record.sh
new file mode 100755
index 0000000000..e99b7ae390
--- /dev/null
+++ b/libs/renderengine/skia/debug/record.sh
@@ -0,0 +1,84 @@
+# This script captures MSKP files from RenderEngine in a connected device.
+# this only functions when RenderEngine uses the Skia backend.
+# it triggers code in SkiaCapture.cpp.
+
+# for a newly flashed device, perform first time steps with
+# record.sh rootandsetup
+
+# record all frames that RenderEngine handles over the span of 2 seconds.
+# record.sh 2000
+
+if [ -z "$1" ]; then
+    printf 'Usage:\n    record.sh rootandsetup\n'
+    printf '    record.sh MILLISECONDS\n\n'
+    exit 1
+elif [ "$1" == "rootandsetup" ]; then
+  # first time use requires these changes
+  adb root
+  adb shell setenforce 0
+  adb shell setprop debug.renderengine.backend "skiaglthreaded"
+  adb shell stop
+  adb shell start
+  exit 1;
+fi
+
+check_permission() {
+    adb shell getenforce
+}
+
+mode=$(check_permission)
+
+if [ "$mode" != "Permissive" ]; then
+   echo "Cannot write to disk from RenderEngine. run 'record.sh rootandsetup'"
+   exit 5
+fi
+
+# record frames for some number of milliseconds.
+adb shell setprop debug.renderengine.capture_skia_ms $1
+
+# give the device time to both record, and starting writing the file.
+# Total time needed to write the file depends on how much data was recorded.
+# the loop at the end waits for this.
+sleep $(($1 / 1000 + 4));
+
+# There is no guarantee that at least one frame passed through renderengine during that time
+# but as far as I know it always at least writes a 0-byte file with a new name, unless it crashes
+# the process it is recording.
+# /data/user/re_skiacapture_56204430551705.mskp
+
+spin() {
+    case "$spin" in
+         1) printf '\b|';;
+         2) printf '\b\\';;
+         3) printf '\b-';;
+         *) printf '\b/';;
+    esac
+    spin=$(( ( ${spin:-0} + 1 ) % 4 ))
+    sleep $1
+}
+
+local_path=~/Downloads/
+
+get_filename() {
+    adb shell getprop debug.renderengine.capture_filename
+}
+
+remote_path=""
+counter=0 # used to check only 1/sec though we update spinner 20/sec
+while [ -z $remote_path ] ; do
+    spin 0.05
+    counter=$(( $counter+1 ))
+    if ! (( $counter % 20)) ; then
+        remote_path=$(get_filename)
+    fi
+done
+printf '\b'
+
+printf "MSKP file serialized to: $remote_path\n"
+
+adb_pull_cmd="adb pull $remote_path $local_path"
+echo $adb_pull_cmd
+$adb_pull_cmd
+
+adb shell rm "$remote_path"
+printf 'SKP saved to %s\n\n' "$local_path"