Hi Arjun, There is way too little information about what you are specifically doing to know what you are doing wrong. In principle you can update osg::Image or assign new osg::Image to osg::Textutre and they should update, but as you don't provide an indication let alone code of how you actually updating the imagery there is no way for others to know what to suggest next.
Robert. On 23 January 2014 11:13, Arjun <[email protected]> wrote: > Hi, > > I have a OSG texture that i have created to display and image in it with the > trigger being an input to my application. > > I can successfully display the image in the texture but the problem arises > when this image needs to be changed. When the trigger is called the second > time my previous image is overwritten and all RGB values are spoilt.(Black > Blob) > > I would like to know if there is a way to remove the previous image in my > texture before rendering the new image in the same texture at the same > geometric coordinates. > > Once i have added the drawable to my osg::Group is there a way to still > access my texture individually? > > osg::Image* sym = new osg::Image(); > > // This image is changed constantly at a trigger event > sym->setImage(img.width(), > img.height(), > 1, > 4, > GL_RGBA, > GL_UNSIGNED_BYTE, > data, > osg::Image::USE_NEW_DELETE, > 1); > sym->flipVertical(); > > osg::Geode* pyramidGeode = new osg::Geode(); > osg::ref_ptr<osg::Group> roadSign; > > float imageWidth = img.width(); > float imageHeight = img.height(); > > osg::ref_ptr<osg::Geometry> pictureQuad1 = > osg::createTexturedQuadGeometry(osg::Vec3(0, -14, 3), > > osg::Vec3(0,-10, 0), > osg::Vec3(0,0, 10), > > 0, > > 1, > > 1, > > 0); > > > osg::ref_ptr<osg::Geometry> pictureQuad2 = > osg::createTexturedQuadGeometry(osg::Vec3(0, 24, 3), > > osg::Vec3(0,-10, 0), > osg::Vec3(0,0, 10), > > 0, > > 1, > > 1, > > 0); > > > pyramidGeode->addDrawable(pictureQuad1); > pyramidGeode->addDrawable(pictureQuad2); > > osg::Texture2D* texture = new osg::Texture2D; > texture->setDataVariance(osg::Object::DYNAMIC); > texture->setImage(sym); > > osg::StateSet* stateOne = new osg::StateSet(); > stateOne->setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON); > pyramidGeode->setStateSet(stateOne); > roadSign->addChild(pyramidGeode); > > Thank you! > > Cheers, > Arjun > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=57966#57966 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
