1GL_ARB_occlusion_query 2http://www.opengl.org/registry/specs/ARB/occlusion_query.txt 3GL_ARB_occlusion_query 4 GL_QUERY_COUNTER_BITS_ARB 0x8864 5 GL_CURRENT_QUERY_ARB 0x8865 6 GL_QUERY_RESULT_ARB 0x8866 7 GL_QUERY_RESULT_AVAILABLE_ARB 0x8867 8 GL_SAMPLES_PASSED_ARB 0x8914 9 void glBeginQueryARB (GLenum target, GLuint id) 10 void glDeleteQueriesARB (GLsizei n, const GLuint* ids) 11 void glEndQueryARB (GLenum target) 12 void glGenQueriesARB (GLsizei n, GLuint* ids) 13 void glGetQueryObjectivARB (GLuint id, GLenum pname, GLint* params) 14 void glGetQueryObjectuivARB (GLuint id, GLenum pname, GLuint* params) 15 void glGetQueryivARB (GLenum target, GLenum pname, GLint* params) 16 GLboolean glIsQueryARB (GLuint id) 17