Positioning textures to display as overlay on-screen?

[VikeeVeekie]

Hey all.

So a few may have seen me working on recreating Luigi's Mansion from scratch in the Source engine, and I want to make it as authentic as possible.

At the moment I'm working on adding some small features, as my building inspiration collapsed for a while.

So I had Dolphin dump every game texture that was in my VRAM, and I want to make the overlays show up which the player sees when entering a room or moves up to another floor.
[T]http://upl.kittehcat.org/2014-12-07_18-44-30.jpg[/T]

I have gave this a go however, but I'm not sure how I can position these textures on-screen.

Anyone has some experience with this? Input will be greatly appreciated.

Thanks in advance.

[Sally]

You can use env_screenoverlay then overlay it with the new textures in each room.

[VikeeVeekie]

Problem is, the texture will most likely be stretched across the player's screen. I've taken a look at env_screenoverlay earlier, but I've got no idea how to position this texture for example in the left corner.
[T]http://upl.kittehcat.org/2014-12-07_20-11-40.png[/T]