added some more temporary debug info

app/node/processor/renderer/rendererprocessthread.cpp

@@ -79,6 +79,8 @@ void RendererProcessThread::ProcessLoop()
     // Main waiting condition
     wait_cond_.wait(&mutex_);
 
+    qDebug() << this << "woke for a queued frame";
+
     if (cancelled_) {
       break;
     }
@@ -109,6 +111,8 @@ void RendererProcessThread::ProcessLoop()
     bool has_hash = parent_->HasHash(hash_);
     bool can_cache = false;
 
+    qDebug() << this << "starting background cache of frame" << path_.time().toDouble();
+
     if (!has_hash){
 
       if ((can_cache = parent_->TryCache(hash_))) {
@@ -123,10 +127,17 @@ void RendererProcessThread::ProcessLoop()
         }
 
         // Get the requested value
+        qDebug() << this << "starting cache of" << hash_.toHex();
         texture_ = output_to_process->get_value(path_.time()).value<RenderTexturePtr>();
 
         render_instance()->context()->functions()->glFinish();
+
+        qDebug() << this << "completed cache of" << hash_.toHex();
+      } else {
+        qDebug() << this << "hash is in use";
       }
+    } else {
+      qDebug() << this << "hash" << hash_.toHex() << "exists";
     }
 
     foreach (Node* dep, all_deps) {