Rename 'draw' or 'drawcall' to action

* There's not a good accepted terminology for this kind of event, and for
  historical reasons 'drawcall' has been the accepted term, even though
  that can be quite confusing when a dispatch or a copy is a 'drawcall'.
* This is particularly highlighted by the event browser filters where
  $draw() includes draws and dispatches, but $dispatch() only includes
  dispatches, it's hard to intuitively understand why $draw() matches all
  of these calls.
* As a result we've defined the term 'action' to cover these types of
  events in the same way that we defined 'event' in the first place to
  mean a single atomic API call.

docs/python_api/examples/renderdoc/fetch_counters.py

@@ -7,23 +7,23 @@ if 'renderdoc' not in sys.modules and '_renderdoc' not in sys.modules:
 # Alias renderdoc for legibility
 rd = renderdoc
 
-draws = {}
+actions = {}
 
-# Define a recursive function for iterating over draws
+# Define a recursive function for iterating over actions
 def iterDraw(d, indent = ''):
-	global draws
+	global actions
 
-	# save the drawcall by eventId
-	draws[d.eventId] = d
+	# save the action by eventId
+	actions[d.eventId] = d
 
 	# Iterate over the draw's children
 	for d in d.children:
 		iterDraw(d, indent + '    ')
 
 def sampleCode(controller):
-	# Iterate over all of the root drawcalls, so we have names for each
+	# Iterate over all of the root actions, so we have names for each
 	# eventId
-	for d in controller.GetDrawcalls():
+	for d in controller.GetRootActions():
 		iterDraw(d)
 
 	# Enumerate the available counters
@@ -50,10 +50,10 @@ def sampleCode(controller):
 	# Look in the results for any draws with 0 samples written - this is an indication
 	# that if a lot of draws appear then culling could be better.
 	for r in results:
-		draw = draws[r.eventId]
+		draw = actions[r.eventId]
 
 		# Only care about draws, not about clears and other misc events
-		if not (draw.flags & rd.DrawFlags.Drawcall):
+		if not (draw.flags & rd.ActionFlags.Drawcall):
 			continue
 
 		if samplesPassedDesc.resultByteWidth == 4: