osg学习（六十一）osg着色器例子

osg着色器例子学习

最新推荐文章于 2024-05-05 22:58:07 发布

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最新推荐文章于 2024-05-05 22:58:07 发布 · 1.1k 阅读

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#着色器 #gnu #fpga开发

本文介绍了使用osg库实现着色器的实例，包括vert.glsl和frag.glsl两个部分，通过这两个着色器文件，展示了如何在osg中应用自定义的着色效果。

osg::ref_ptr<osg::Geometry> geom = new osg::Geometry;
    osg::ref_ptr<osg::Geode> geode = new osg::Geode;
    geom->setSupportsDisplayList(false);
    geode->addDrawable(geom.get());
    osg::ref_ptr<osg::Vec3Array> vArr = new osg::Vec3Array;
    vArr->push_back(osg::Vec3(-5.0f,0.0f,-5.0f));
    vArr->push_back(osg::Vec3(5.0f,0.0f,-5.0f));
    vArr->push_back(osg::Vec3(5.0f,0.0f,5.0f));
    vArr->push_back(osg::Vec3(-5.0f,0.0f,5.0f));
    geom->setVertexArray(vArr.get());
    geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::QUADS,0,4));
    osg::ref_ptr<osg::Vec3Array> nArr = new osg::Vec3Array;
    nArr->push_back(osg::Vec3(0.0, 0.0, 1.0));
    geom->setNormalArray(nArr.get());
    geom->setNormalBinding(osg::Geometry::BIND_OVERALL);
    osg::ref_ptr<osg::Vec4Array> cArr = new osg::Vec4Array;
    cArr->push_back(osg::Vec4(1.0,1.0,0.0,1.0));
    geom->setColorArray

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