Re: [osg-users] osgDB::writeImageFile() jpg vs png
Hi Jim, I've been bit by this one. It seems that osgDB::writeImageFile does not correctly support images with pixelFormat = GL_RGBA for JPEG files. I think you'll find that changing to GL_RGB will get you a good file. -Don Leich Trying to save an osg::Image as a .jpg file malfunctions. Either false is returned or .jpg file has weird colors. But .png format works ok. osg::ref_ptrosg::Image image = mTextureObject-getImage(); //osgDB::writeImageFile( *image, file.jpg ); osgDB::writeImageFile( *image, file.png ); Tried OSG 2.8.1, 2.8.2, 2.9.6 on Linux, FreeBSD, and that thing from Redmond. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgDB::writeImageFile() jpg vs png
On Thu, Feb 11, 2010 at 5:12 PM, Don Leich d...@ilight.com wrote: Hi Jim, I've been bit by this one. It seems that osgDB::writeImageFile does not correctly support images with pixelFormat = GL_RGBA for JPEG files. I think you'll find that changing to GL_RGB will get you a good file. Standard JPEG doesn't support transparency. So I can't see how the JPEG could even support writing RGBA JPEG's... The best we can do is fail gracefully. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgDB::writeImageFile() jpg vs png
On 2/11/2010 10:12 AM, Don Leich wrote: Hi Jim, I've been bit by this one. It seems that osgDB::writeImageFile does not correctly support images with pixelFormat = GL_RGBA for JPEG files. I think you'll find that changing to GL_RGB will get you a good file. It might be good to put a warning/error or something in there to alert people when they get bit by this. -Don Leich -- Chris 'Xenon' Hanson, omo sanza lettere Xenon AlphaPixel.com PixelSense Landsat processing now available! http://www.alphapixel.com/demos/ There is no Truth. There is only Perception. To Perceive is to Exist. - Xen ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgDB::writeImageFile() jpg vs png
Trying to save an osg::Image as a .jpg file malfunctions. Either false is returned or .jpg file has weird colors. But .png format works ok. osg::ref_ptrosg::Image image = mTextureObject-getImage(); //osgDB::writeImageFile( *image, file.jpg ); osgDB::writeImageFile( *image, file.png ); Tried OSG 2.8.1, 2.8.2, 2.9.6 on Linux, FreeBSD, and that thing from Redmond. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgDB::writeImageFile() jpg vs png
On 2/9/2010 5:35 PM, Jim Brooks wrote: Trying to save an osg::Image as a .jpg file malfunctions. Either false is returned or .jpg file has weird colors. But .png format works ok. Is it an odd bit depth? -- Chris 'Xenon' Hanson, omo sanza lettere Xenon AlphaPixel.com PixelSense Landsat processing now available! http://www.alphapixel.com/demos/ There is no Truth. There is only Perception. To Perceive is to Exist. - Xen ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
