OSG使用自定义Shader

原创已于 2025-10-08 16:22:26 修改 · 110 阅读

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#图形渲染

于 2025-10-08 15:52:48 首次发布

设置GraphContext

mViewer->getCamera()->getGraphicsContext()->getState()->resetVertexAttributeAlias(false);//1
_mViewer->getCamera()->getGraphicsContext()->getState()->setUseModelViewAndProjectionUniforms(true);//2
_mViewer->getCamera()->getGraphicsContext()->getState()->setUseVertexAttributeAliasing(true);//3

设置完成后就可以在节点上正常处理了

auto ss = root->getOrCreateStateSet();
osg::ref_ptr<osg::Program> program = new  osg::Program();
program->addShader(new osg::Shader(osg::Shader::FRAGMENT, fragShader));
program->addShader(new osg::Shader(osg::Shader::VERTEX, vertexShader));
ss->setAttributeAndModes(program, osg::StateAttribute::ON);
ss->setMode( GL_DEPTH_TEST, osg::StateAttribute::ON );