I found an Actionscript 3 function that I wanted to use in my HTML5 project. I had tested it in a Flash project and it worked great. Converting to OpenFl & Haxe was straightforward but it wouldn’t work. I double checked on all the called functions but the API reference for them said “Available on all platforms.”
After hours of debugging, I was able to isolate the line of code that was the problem. It used a call to BitmapData.draw using a ColorTransform with a BlendMode option. The problem was that the BlendMode had no effect. In searching for related issues I came across a reference to Feature Matrix where it said the BlendMode option was ignored in HTML5. Nowhere in the API for any of the related documentation was this included.
How up to date is Feature Matrix?
Why doesn’t the API Reference more fully include the info contained in Feature Matrix?