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A 'spec(tac)ular' American...

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Zacherius8 View Drop Down
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    Posted: August-02-2009 at 7:11pm
What IS specularity?

Well, it is a per pixel lighting technique, which makes sure that reflection no longer has to be painted as a static effect thereby ALSO showing when it is dark/overcast/at night. Instead, it will only show in certain conditions. Light has to be present, and depending on the angle and amount of light, a certain reflection will become visible. Of course it is up to us to manipulate the channels in such a way, we can more or less control the reflectivity.

What better way, to show this, than using our Super 80 UHDT American Airlines textures?

Same angle viewing the plane, but different headings, so you can actually see, what happens, while we change headings. No rolling and banking, simply slewing to make it easy.

First up : Heading 090, you can see a mostly non reflective, dark bare metal fuse. A tat reflection is visible above the cockpit..

Second shot : Heading 045, and as you can see the reflection starts to 'crawl' along the fuselage, towards the back. Still, mostly visible in the front section..

Third shot : We started of at a heading of 090, now we're heading 360, a change of 90 degrees. The reflection is starting to show. As in the first shot, the fuse was still a dull, matted piece of metal, we now are seeing spots of reflection showing, mostly in the 25-75% region of the fuse :

Shot four : This is it, heading 315. the light hits the fuse at a frontal angle, and the entire fuse starts to light up like a Christmas tree. As you could see some colour in the reflection in the previous shot, that now has dissapeared as the reflection is so 'hot', there is no room for colour anymore :

Another 45 degrees heading change as in the fifth shot you already see a decrease, as the light starts to hit the fuselage in a larger angle. It also moves down bit, not in position, but in area.

Heading 225. Sixth shot and we see the characteristic wobbly line of reflection which is a common sight on Bare metal liveries. The line of reflection becomes thinner again, is less wide and is starting to decrease in strength...

Shot 7, heading 180. Almost no reflection left (we're not going to do the full circle either, you get the point by now). You see some left at the front.

Please bear in mind, that while we look at one side, of course the other side of the fuse is experiencing the same, only the other way around.

These are our specular maps from a distance, of course, as you could have seen from the close ups, this same 'phenomenon' happens, on a much smaller scale, as chipped of and bare metal parts light up in reflection as more light comes to touch it...

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bushpilot View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bushpilot Quote  Post ReplyReply Direct Link To This Post Posted: August-03-2009 at 9:39am
Hey great introduction of speculars! After all shots it will be a blast to actually see them work in FSX.Smile
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