GL_NV_transform_feedback2
http://www.opengl.org/registry/specs/NV/transform_feedback2.txt
GL_NV_transform_feedback2
	GL_TRANSFORM_FEEDBACK_NV 0x8E22
	GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED_NV 0x8E23
	GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE_NV 0x8E24
	GL_TRANSFORM_FEEDBACK_BINDING_NV 0x8E25
	void glBindTransformFeedbackNV (GLenum target, GLuint id)
	void glDeleteTransformFeedbacksNV (GLsizei n, const GLuint* ids)
	void glDrawTransformFeedbackNV (GLenum mode, GLuint id)
	void glGenTransformFeedbacksNV (GLsizei n, GLuint* ids)
	GLboolean glIsTransformFeedbackNV (GLuint id)
	void glPauseTransformFeedbackNV (void)
	void glResumeTransformFeedbackNV (void)
