HI RGB can be saved to Jpegs straight forwardly using the jpeg library, never used the OSG write though always done this myself you have to make sure you set the right format etc and the image if coming from OGL may have to be sent bottom to top instead of top to bottom Don't have access to code I can post write now G.
_____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jean-Baptiste Authesserre Sent: Thursday, April 10, 2008 8:08 AM To: OpenSceneGraph Users Subject: Re: [osg-users] osg Image data Hi, Have you tried to store your mage in an other format than jpg? I have also difficulties to store in jpg format. I personally store screenshots of a 3D scene, and it works well when I use png format, or bmp format, but not with the jpg format. Maybe the libjpeg used by osg don't work with RGB image? Jean-Baptiste. 2008/4/10, Vincent Bourdier <[EMAIL PROTECTED]>: 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 http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
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