| GL_EXT_timer_query | |
| http://www.nvidia.com/dev_content/nvopenglspecs/GL_EXT_timer_query.txt | |
| GL_TIME_ELAPSED_EXT 0x88BF | |
| void glGetQueryObjecti64vEXT (GLuint id, GLenum pname, GLint64EXT *params) | |
| void glGetQueryObjectui64vEXT (GLuint id, GLenum pname, GLuint64EXT *params) |