Hi, I actually have been using osgOcean for a year now. Well, I actually use
Delta 3D which uses OSG and in turn osgOcean. It's a pretty good library for
rendering ocean, would be better if you can add atmospheric scattering using
Mie and Rayleigh approximation for real time day-night situation. But beggars
can't be chosers, right? :D
Anyway I've found 2 bugs on osgOcean. One I still haven't been able to solve,
that is the glare functionality. It seems like the glare would also affect the
skybox and not only the ocean. I believe it's a shader issue when you are
downsampling the rendered texture with glare.
The other one is the "FFTOceanSurface::getSurfaceHeightAt()" method. It would
crash from time to time due to negative tile_x and/or tile_y value whereas they
are used to determine an index for vectors in
"OceanTile::normalBiLinearInterp()" and "OceanTile::biLinearInterp()" function.
I know that because I used the method quite a lot for determining a ship's
transformation when there's a wave. Below is the fix for the said problem:
Code:
...
if (_oldFrame < _mipmapData.size())
{
const OceanTile& data = _mipmapData[_oldFrame][0];
float tile_x = oceanX - ix * _tileResolution;
float tile_y = oceanY - iy * _tileResolution;
//++ BAWE-20101119: BUG FIX
// Absolute value of dx & dy
tile_x = tile_x > 0 ? tile_x : -tile_x;
tile_y = tile_y > 0 ? tile_y : -tile_y;
//-- BAWE-20101119: BUG FIX
if (normal != 0)
{
*normal = data.normalBiLinearInterp(tile_x,
tile_y);
}
return data.biLinearInterp(tile_x, tile_y);
}
Thank you!
Cheers,
Bawenang
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=36177#36177
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