Commit Graph

6 Commits

Author SHA1 Message Date
Robert Osfield
1d9e7f144b From Michael McDonnel, "The tessellation shader example has a small bug.The middle of the
geometry is clipped as soon as it is tessellated. The clipping is
probably caused by rounding errors because it is only in one spot. The
clipping disappears when the camera is moved, and reappears when it is
moved back. Expanding the the bounding box fixed the clipping bug."

Tweaked by Robert Osfield to expand it to a -1 to 1 unit box.
Actual clipping bug is not due to rounding errors but the shaders creating vertices outside the bounding box of the original input vertices


git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14747 16af8721-9629-0410-8352-f15c8da7e697
2015-03-02 12:09:25 +00:00
Robert Osfield
7d50c8e634 From Michael McDonnell, "I have changed the code so that the plus key increases both the inner
and outer tessellation. The minus key decrease both the inner and
outer tessellation. You can still use the arrow keys to control inner
and outer tessellation separately."

From Robert Osfield, clean up the code to fix warnings and make the coding style more consistent with the rest of the OSG.


git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14716 16af8721-9629-0410-8352-f15c8da7e697
2015-02-25 16:59:43 +00:00
Robert Osfield
1a7f2fcb3e Introduced new osg::PatchParameter StateAttribute class to wrap up glPatchParameter associated state.
Note, osg::Program::setParameter(GL_PATCH_VERTICES,num); is nolonger support and should be replaced by using the new PatchParameter class.
2013-06-11 10:52:37 +00:00
Robert Osfield
4623c251bb Fixed indentation 2013-06-11 10:49:57 +00:00
Robert Osfield
d37eff5c2b Ran dos2unx on file 2012-04-20 09:40:29 +00:00
Robert Osfield
b0c510ab08 From John Kaniarz, "Here is an example of using tessellation shaders in osg. With permission from the author, I adapted it from this tutorial:
http://prideout.net/blog/?p=48"
2012-04-20 09:38:51 +00:00