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Watermasking Problems...

F

flightsimstudios

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unitedstates
Okay, I seem to have tracked down my watermapping issues and from what I can deduce it doesn't appear to have anything to do with waterclass...

The problem is this:

If one phototerrain tile contains only a water texture, and has the alpha channel set to black over the whole 256x256 pixel square then that whole tile is rendered as a ground phototile not a water phototile...

Here's an image

watermask.jpg


Notice that the tiles that have at least some white value in the alpha channel work correctly and turn the black alpha matte portions to water...

The tiles that are just water and have only a black covering the entire alpha matte refuse to become a water polygon tile...

Does anyone know a workaround to this? I'd prefer not to have just one pixel as a land pixel in the alpha just to turn the water into water...

Dean.

Do phototiles have a border around them of a couple of pixels that are not usually seen?
 
Thanks to Dick, aka Rhumbaflappy, I've been able to track down the problem with some experiments...

If you have a photo scenery master that has blocks of water, you need to make sure both the value of the RGB and A are all at 0,0,0 for both the texture and the master tile....

From what I can deduce it actually really depends on the pixel at 0,0 which if it's at a value other than 0,0,0 then it will be rendered as a terrain ground tile and not a terrain water tile...
 
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