use GL_UNSIGNED_BYTE a char is 1 byte
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Vincent Bourdier Sent: 10. april 2008 13:33 To: OpenSceneGraph Users Subject: Re: [osg-users] osg Image data Yes, but GL_UNSIGNED_CHAR doesn't exist. so I don't know what to use... 2008/4/10, J.P. Delport <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>>: Hi, sizeof(unsigned char) != sizeof(GL_UNSIGNED_SHORT) try GL_UNSIGNED_CHAR jp Vincent Bourdier wrote: > Hi All, > > I have a problem concerning writing image data. > > My code is simple : > > const long size = _x*_y*3; > > unsigned char* data = (unsigned char*)calloc(size, > sizeof(unsigned char)); > > for(long i=0; i < size ; i+= 3) > { > data[i] = 0; //red > data[i+1] = 0; //green > data[i+2] = 0; //blue > } > > osg::ref_ptr<osg::Image> image = new osg::Image; > image->allocateImage(_x, _y, 1, GL_RGB, GL_UNSIGNED_SHORT); > image->setOrigin(osg::Image::BOTTOM_LEFT);//start counting > pixels on the Bottom left of the picture > image->setImage(_x, _y, 1, GL_RGB, GL_RGB, GL_UNSIGNED_SHORT, > data, osg::Image::NO_DELETE); > > osgDB::writeImageFile(*image, "Z:/autres/Gradient.jpg"); > > > > the result must be a black picture... but I've a totally different > result (see attached file) > > Does anyone see a mistake ? > > Thanks. > > Regards, > Vincent. > > ------------------------------------------------------------------------ > > > ------------------------------------------------------------------------ > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org<mailto:osg-users@lists.openscenegraph.org> > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. The full disclaimer details can be found at http://www.csir.co.za/disclaimer.html. This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks Transtec Computers for their support. _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org<mailto:osg-users@lists.openscenegraph.org> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
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