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#include <stdio.h> |
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#include <iostream> |
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#ifdef _WIN32 |
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#include <Windows.h> |
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#endif |
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#include <osg/GLExtensions> |
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#include <osgViewer/Viewer> |
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const int OSG_WIDTH = 1024; |
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const int OSG_HEIGHT = 960; |
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class TestSupportOperation : public osg::GraphicsOperation { |
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public: |
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TestSupportOperation() |
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: osg::Referenced(true), |
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osg::GraphicsOperation("TestSupportOperation", false), |
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m_supported(true), |
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m_errorMsg(), |
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m_version(1.3) {} |
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virtual void operator()(osg::GraphicsContext* gc) { |
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(m_mutex); |
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osg::GLExtensions* gl2ext = gc->getState()->get<osg::GLExtensions>(); |
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if (gl2ext) { |
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if (!gl2ext->isGlslSupported) { |
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m_supported = false; |
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m_errorMsg = "ERROR: GLSL not supported by OpenGL driver."; |
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} else |
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m_version = gl2ext->glVersion; |
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} else { |
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m_supported = false; |
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m_errorMsg = "ERROR: GLSL not supported."; |
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} |
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} |
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OpenThreads::Mutex m_mutex; |
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bool m_supported; |
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std::string m_errorMsg; |
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float m_version; |
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}; |
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int main(int, char**) { |
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#ifdef _WIN32 |
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::SetProcessDPIAware(); |
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#endif |
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osgViewer::Viewer viewer; |
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viewer.setUpViewInWindow(100, 100, OSG_WIDTH, OSG_HEIGHT); |
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// openGL version: |
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osg::ref_ptr<TestSupportOperation> so = new TestSupportOperation; |
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viewer.setRealizeOperation(so.get()); |
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viewer.realize(); |
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if (so->m_supported) |
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std::cout << "GLVersion=" << so->m_version << std::endl; |
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else |
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std::cout << so->m_errorMsg << std::endl; |
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return viewer.run(); |
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} |