Hi,
Thrall, Bryan wrote:
Brian R Hill wrote on Wednesday, March 04, 2009 5:41 PM:
// disable clamping
osg::ClampColor* clamp = new osg::ClampColor();
clamp->setClampVertexColor(GL_FALSE);
clamp->setClampFragmentColor(GL_FALSE);
clamp->setClampReadColor(GL_FALSE);
scene->getOrCreateStateSet()->setAttribute(clamp,
osg::StateAttribute::ON |
osg::StateAttribute::OVERRIDE);
I am sad to report that that doesn't work either :(
Is there something I'm doing wrong with osg::TransferFunction1D, or is
my understanding wrong?
I'm not familiar with osg::TransferFunction1D, but I'm sure that float
texture data can reach shaders without clamping, we use it all the time.
I'd suggest creating an osg::Image that is attached to a texture and see
if the values then work properly, you can modify the image data
directly. Have a look at the osgprerender example when the options --hdr
and --image are enabled. There are e.g. negative values in the image.
jp
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