二维纹理数组的问题

fdp0525

那位大哥用过osg::Texture2DArray阿，我怎么调用这个
          const osg::GraphicsContext *context = m_viewer->getCamera()->getGraphicsContext();
            const   osg::State*   state = context->getState();
            osg::ref_ptr<osg::Texture2DArray> m_texture2dArray = new osg::Texture2DArray;
            osg::Texture2DArray::Extensions* ext = m_texture2dArray->getExtensions(state->getContextID(),false);
            
            ext->glTexSubImage3D(GL_TEXTURE_2D_ARRAY_EXT, 0, 0, 0, i*cols+j, tileWidth, tileHeight, 1, GL_RGB, GL_UNSIGNED_BYTE, pData);
就会给出下面的错误：
undefined reference to `osg::Texture2DArray::Extensions::__glewTexSubImage3D(unsigned int, int, int, int, int, int, int, int, unsigned int, unsigned int, void const*) const'


单独使用，不用二维纹理数组来调
glTexSubImage3D(GL_TEXTURE_2D_ARRAY_EXT, 0, 0, 0, i*cols+j, tileWidth, tileHeight, 1, GL_RGB, GL_UNSIGNED_BYTE, pData);
没有问题，谁能告诉我这个是怎么回事呢。

liuzhiyu123

osg::Texture2DArray::Extensions* ext = m_texture2dArray->getExtensions(state->getContextID(),true);

fdp0525

谢谢阿 可是改了也是一样的问题阿
const osg::GraphicsContext *context = m_viewer->getCamera()->getGraphicsContext();
            const   osg::State*   state = context->getState();
            osg::ref_ptr<osg::Texture2DArray> m_texture2dArray = new osg::Texture2DArray;
            osg::Texture2DArray::Extensions* ext = m_texture2dArray->getExtensions(state->getContextID(),true);
           
            ext->glTexSubImage3D(GL_TEXTURE_2D_ARRAY_EXT, 0, 0, 0, i*cols+j, tileWidth, tileHeight, 1, GL_RGB, GL_UNSIGNED_BYTE, pData);

加上
           ext->setupGLExtensions(state->getContextID());
也一样阿阿

array

您为什么要这么做？直接设置setImage()就可以了