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WS30: Use NEAREST_MIPMAP_NEAREST for landclass

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Only for the MIN filter, as the MAX filter causes
significant interpolation issues.
This commit is contained in:
Stuart Buchanan 2021-11-05 01:12:01 +00:00
parent 1553ac2e17
commit 6ea99e43f1
1 changed files with 3 additions and 1 deletions
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simgear/scene/tgdb/VPBTechnique.cxx
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@ -1314,7 +1314,9 @@ void VPBTechnique::applyColorLayers(BufferData& buffer, Locator* masterLocator)
texture2D->setMaxAnisotropy(16.0f);
texture2D->setResizeNonPowerOfTwoHint(false);
texture2D->setFilter(osg::Texture::MIN_FILTER, osg::Texture::NEAREST);
// Use mipmaps only in the minimization case because on magnification this results
// in bad interpolation of boundaries between landclasses
texture2D->setFilter(osg::Texture::MIN_FILTER, osg::Texture::NEAREST_MIPMAP_NEAREST);
texture2D->setFilter(osg::Texture::MAG_FILTER, osg::Texture::NEAREST);
texture2D->setWrap(osg::Texture::WRAP_S,osg::Texture::CLAMP_TO_EDGE);