void buffer_manager_t::set_tf_varyings( material_ptr_t const & material, buffer_ptr_t const & tf_buffer ,const char ** names, GLsizei count ) { glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, tf_buffer->id()); glTransformFeedbackVaryings(material->gl_id(), count, names, GL_INTERLEAVED_ATTRIBS); glLinkProgram(material->gl_id()); GLint linked; glGetObjectParameterivARB(material->gl_id(), GL_LINK_STATUS, &linked); if (!linked) { char ch[1000]; glGetProgramInfoLog(material->gl_id(), 1000, NULL, ch); } glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, 0); }