    > Internet Explorer had a number of iffy behaviours and lagged behind other browsers for many visual effects, even regarding basic properties like opacity. Thus, Microsoft brought in bespoke filter functionality.

That's not accurate at all. At the time IE4 launched, it was ahead of the competition. It also had quite a lot of non-standard extras as part of Microsofts strategy to embrace, extend and extinguish. IE4 was extend. In other cases the strategy worked, but not for the web.

The DirectX filters weren't used pretty much anywhere until it turned out it could do things that were specced and implemented by others years later.

▲ agos 3 hours ago | parent [-]

but that is not about IE4

▲

tosti 3 hours ago | parent [-]

I see. Although filters were implemented in IE4, DirectX filters came about in IE5.5

However, the extend phase wasn't just IE4. They stopped piling on all sorts of non-standard vendor lock-in stuff after IE6. By the time IE7 came out, it was clear the web is here to stay.

	▲	duskwuff 14 minutes ago \| parent [-]
		> They stopped piling on all sorts of non-standard vendor lock-in stuff after IE6. IE6 also stuck around a lot longer than previous versions. It was released in 2001; IE7 didn't show up until 2006, and was an optional update which many users skipped.