I also noticed that the code assumes r to be 1 by ignoring it in the
pDataRGBA = new BYTE [nWidth * nHeight * 4]; This might not be doing it
though, because the r probably is 1.
I had to do something very similar to this myself recently. I did it with
allocate image:
osg::ref_ptr<osg::Image> newImage = new osg::Image();
newImage->allocateImage(s, t, 1, GL_RGBA, GL_UNSIGNED_BYTE);
Then walked through the old and new with
newImage->data(col, row);
Hope this helps,
-- Rick
On 5/15/07, Rafa Gaitan <[EMAIL PROTECTED]> wrote:
Hi Christian,
The best way to use osg::Image is using a osg::ref_ptr.
osg::ref_ptr<osg::Image> m_pImage;
And you shouldn't delete m_pImage. ref_ptr and Referenced do the job for
you.
Rafa.
On 5/15/07, Martin Aumueller <[EMAIL PROTECTED]> wrote:
>
> Hi Christian,
>
> On Tuesday 15 May 2007, [EMAIL PROTECTED] wrote:
> > Hi,
> >
> > I have a problem changing the data of an RGB to an RGBA image.
> > The following code works fine until i end the programm. The the
> delete[]
> > operator of the image crashes.
> > What's wrong?
> > Thanks for help!
> >
> > Christian
> >
> >
> > class CTextureInfo
> > {
> > public:
> > osg::Image* m_pImage;
>
> It should work better if you say m_pImage = new osg::Image; here.
>
> Martin
>
> >
> > void MakeTranslucent() {
> > if(pixFrmt == GL_RGB) {
> > int nWidth = m_pImage->s();
> > int nHeight = m_pImage->t();
> > int nDepth = m_pImage->r();
> > pDataRGBA = new BYTE [nWidth * nHeight * 4];
> > pDataRGB = (BYTE*)m_pImage->data();
> >
> > // ... make translucent....
> >
> > m_pImage->setImage(m_pImage->s(), m_pImage->t(),
> m_pImage->r(),
> > GL_RGBA,
> > GL_RGBA, GL_UNSIGNED_BYTE, pDataRGBA,
> > osg::Image::USE_NEW_DELETE);
> > }
> > }
> > }
> >
> > --
> > Christian Hoffmann
> > _______________________________________________
> > osg-users mailing list
> > [email protected]
> > http://openscenegraph.net/mailman/listinfo/osg-users
> > http://www.openscenegraph.org/
>
>
> _______________________________________________
> osg-users mailing list
> [email protected]
> http://openscenegraph.net/mailman/listinfo/osg-users
> http://www.openscenegraph.org/
>
--
Rafael Gaitán Linares
Instituto de Automática e Informática Industrial http://www.ai2.upv.es
Ciudad Politécnica de la Innovación
Universidad Politécnica de Valencia
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