Class EXTDisjointTimerQuery


  • public class EXTDisjointTimerQuery
    extends java.lang.Object
    Native bindings to the EXT_disjoint_timer_query extension.

    Applications can benefit from accurate timing information in a number of different ways. During application development, timing information can help identify application or driver bottlenecks. At run time, applications can use timing information to dynamically adjust the amount of detail in a scene to achieve constant frame rates. OpenGL implementations have historically provided little to no useful timing information. Applications can get some idea of timing by reading timers on the CPU, but these timers are not synchronized with the graphics rendering pipeline. Reading a CPU timer does not guarantee the completion of a potentially large amount of graphics work accumulated before the timer is read, and will thus produce wildly inaccurate results. glFinish() can be used to determine when previous rendering commands have been completed, but will idle the graphics pipeline and adversely affect application performance.

    This extension provides a query mechanism that can be used to determine the amount of time it takes to fully complete a set of GL commands, and without stalling the rendering pipeline. It uses the query object mechanisms first introduced in the occlusion query extension, which allow time intervals to be polled asynchronously by the application.

    Requires GLES 2.0.

    • Method Detail

      • nglGenQueriesEXT

        public static void nglGenQueriesEXT​(int n,
                                            long ids)
      • glGenQueriesEXT

        public static void glGenQueriesEXT​(java.nio.IntBuffer ids)
      • glGenQueriesEXT

        public static int glGenQueriesEXT()
      • nglDeleteQueriesEXT

        public static void nglDeleteQueriesEXT​(int n,
                                               long ids)
      • glDeleteQueriesEXT

        public static void glDeleteQueriesEXT​(java.nio.IntBuffer ids)
      • glDeleteQueriesEXT

        public static void glDeleteQueriesEXT​(int id)
      • glIsQueryEXT

        public static boolean glIsQueryEXT​(int id)
      • glBeginQueryEXT

        public static void glBeginQueryEXT​(int target,
                                           int id)
      • glEndQueryEXT

        public static void glEndQueryEXT​(int target)
      • nglGetQueryivEXT

        public static void nglGetQueryivEXT​(int target,
                                            int pname,
                                            long params)
      • glGetQueryivEXT

        public static void glGetQueryivEXT​(int target,
                                           int pname,
                                           java.nio.IntBuffer params)
      • glGetQueryiEXT

        public static int glGetQueryiEXT​(int target,
                                         int pname)
      • nglGetQueryObjectuivEXT

        public static void nglGetQueryObjectuivEXT​(int id,
                                                   int pname,
                                                   long params)
      • glGetQueryObjectuivEXT

        public static void glGetQueryObjectuivEXT​(int id,
                                                  int pname,
                                                  java.nio.IntBuffer params)
      • glGetQueryObjectuiEXT

        public static int glGetQueryObjectuiEXT​(int id,
                                                int pname)
      • glQueryCounterEXT

        public static void glQueryCounterEXT​(int id,
                                             int target)
      • nglGetQueryObjectivEXT

        public static void nglGetQueryObjectivEXT​(int id,
                                                  int pname,
                                                  long params)
      • glGetQueryObjectivEXT

        public static void glGetQueryObjectivEXT​(int id,
                                                 int pname,
                                                 java.nio.IntBuffer params)
      • glGetQueryObjectiEXT

        public static int glGetQueryObjectiEXT​(int id,
                                               int pname)
      • nglGetQueryObjecti64vEXT

        public static void nglGetQueryObjecti64vEXT​(int id,
                                                    int pname,
                                                    long params)
      • glGetQueryObjecti64vEXT

        public static void glGetQueryObjecti64vEXT​(int id,
                                                   int pname,
                                                   java.nio.LongBuffer params)
      • glGetQueryObjecti64EXT

        public static long glGetQueryObjecti64EXT​(int id,
                                                  int pname)
      • nglGetQueryObjectui64vEXT

        public static void nglGetQueryObjectui64vEXT​(int id,
                                                     int pname,
                                                     long params)
      • glGetQueryObjectui64vEXT

        public static void glGetQueryObjectui64vEXT​(int id,
                                                    int pname,
                                                    java.nio.LongBuffer params)
      • glGetQueryObjectui64EXT

        public static long glGetQueryObjectui64EXT​(int id,
                                                   int pname)
      • glGenQueriesEXT

        public static void glGenQueriesEXT​(int[] ids)
        Array version of: GenQueriesEXT
      • glDeleteQueriesEXT

        public static void glDeleteQueriesEXT​(int[] ids)
        Array version of: DeleteQueriesEXT
      • glGetQueryivEXT

        public static void glGetQueryivEXT​(int target,
                                           int pname,
                                           int[] params)
        Array version of: GetQueryivEXT
      • glGetQueryObjectuivEXT

        public static void glGetQueryObjectuivEXT​(int id,
                                                  int pname,
                                                  int[] params)
        Array version of: GetQueryObjectuivEXT
      • glGetQueryObjectivEXT

        public static void glGetQueryObjectivEXT​(int id,
                                                 int pname,
                                                 int[] params)
        Array version of: GetQueryObjectivEXT
      • glGetQueryObjecti64vEXT

        public static void glGetQueryObjecti64vEXT​(int id,
                                                   int pname,
                                                   long[] params)
        Array version of: GetQueryObjecti64vEXT
      • glGetQueryObjectui64vEXT

        public static void glGetQueryObjectui64vEXT​(int id,
                                                    int pname,
                                                    long[] params)
        Array version of: GetQueryObjectui64vEXT