Add scraper to find paths that fallback to software

tools/lua/paths.lua

+function sk_scrape_startcanvas(c, fileName) end

[robertphillips, 2014/08/15 12:34:18]

Comment up here about what this tracks and why ??

[krajcevski, 2014/08/15 15:13:52]

Done.

+
+function sk_scrape_endcanvas(c, fileName) end
+
+draws = 0
+drawPaths = 0
+drawPathsAnti = 0
+drawPathsConvex = 0
+drawPathsConvexAnti = 0
+
+function string.starts(String,Start)
+   return string.sub(String,1,string.len(Start))==Start
+end
+
+function updatePathVars(path, isAntiAlias)
+   if not path then
+      return
+   end
+
+   if path:isEmpty() then
+      return
+   end
+
+   if path:isRect() then
+      return
+   end
+
+   drawPaths = drawPaths + 1
+   if isAntiAlias then
+      drawPathsAnti = drawPathsAnti + 1
+   end
+
+   if path:isConvex() then
+      drawPathsConvex = drawPathsConvex + 1
+      if isAntiAlias then
+         drawPathsConvexAnti = drawPathsConvexAnti + 1
+      end
+   end
+end
+
+function sk_scrape_accumulate(t)
+   if (string.starts(t.verb, "draw")) then
+      draws = draws + 1
+   end
+

[robertphillips, 2014/08/15 12:34:18]

if (string.starts(t.verb, "clip")) then
    clips = clips + 1
end

?

[krajcevski, 2014/08/15 15:13:52]

Done.

+   if t.verb == "clipPath" then
+      local path = t.path
+      local antiAlias = t.aa
+      updatePathVars(path, antiAlias)
+   end
+
+   if t.verb == "drawPath" then
+      local paint = t.paint
+      local path = t.path
+      updatePathVars(path, paint:isAntiAlias())
+   end
+end
+
+function sk_scrape_summarize() 
+   local swPaths = drawPathsAnti - drawPathsConvexAnti
+   io.write("\ndraws = draws + ", draws, "\n");
+   io.write("\ndrawPaths = drawPaths + ", drawPaths, "\n");
+   io.write("\nswPaths = swPaths + ", swPaths, "\n");
+end