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Water modeling

Started by NiteLordz Feb 26, 2013 at 9:28 PM 1 replies 1.4k views

Original Post

Feb 26, 2013 at 9:28 PM

Currently i have a terrain that i render out using patches, and i have a plane that represents the water level. this works fine... however, as majority of the water plane is under the terrain, it is wasted rendering.

ideas i have are that i create a patched water system similar to what i did with terrain and using software occlusion to determine if a patch is visible. if i did this, i could theoretically use a heightmap to build the build level, allowing for rivers of multiple heights, instead of a plane.

any suggestions?

phil_t

144

phil_t

Feb 27, 2013 at 3:13 AM

Assuming you are drawing the water after you draw the terrain, you probably aren't taking much of a performance penalty.

Have you measured the "wasted rendering", and if so, how much is it eating into your frame time?

Flimflam

Feb 27, 2013 at 4:47 AM

You could just designate areas that are bodies of water on your map manually and draw a quad or quads (if the water body is irregularly shaped) in that area specifically, if you're worrying about overdraw or something.

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