求教！如何改变模型材质？

d3d3d353

如何改变模型材质？我的代码如下但效果不正确

osg::ref_ptr<osg::StateSet>stateset=new osg::StateSet();
stateset=model1->getOrCreateStateSet();
stateset->setMode(GL_BLEND,osg::StateAttribute::OFF|osg::StateAttribute::OVERRIDE);
osg::ref_ptr<osg::Material>material=new osg::Material();
material->setDiffuse(osg::Material::FRONT_AND_BACK,osg::Vec4(0.03,0.03,0.01,1));
material->setAmbient(osg::Material::FRONT_AND_BACK,osg::Vec4(0.03,0.03,0.01,1));
material->setSpecular(osg::Material::FRONT_AND_BACK,osg::Vec4(0.03,0.03,0.01,1));
material->setEmission(osg::Material::FRONT_AND_BACK,osg::Vec4(0.03,0.03,0.01,1));
material->setShininess(osg::Material::FRONT_AND_BACK,0);
material->setTransparency(osg::Material::FRONT_AND_BACK,0.5);
material->setAlpha(osg::Material::FRONT_AND_BACK,0.5);
stateset->setAttribute(material.get(),osg::StateAttribute::ON|osg::StateAttribute::OVERRIDE);
  stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF|osg::StateAttribute::OVERRIDE);
  stateset->setMode(GL_DEPTH_TEST,osg::StateAttribute::OFF|osg::StateAttribute::OVERRIDE);
效果图：

模型是3dmax做的茶壶，可以看到rgba值不是我想要的0.03,0.03,0.01,0.5这为什么？该怎么做？
谢谢！

d3d3d353

之前版主说，重载nodecallback，写一个回调函数，在operator（）里取得模型node的stateset，然后定义一个材质，并赋予自己想更改的颜色，更新stateset~
我直接改不行么？为什么用回调啊？

阿威

你要问的是   alpha的0.5没效果吗

d3d3d353

你要问的是   alpha的0.5没效果吗
阿威 发表于 2010-12-17 23:41

能解决alpha也行，模型中有的部分alpha是0.5但有的不是该如何解决？
谢谢！

阿威

osg::BlendFunc 就可以了

d3d3d353

那颜色呢？