Package org.lwjgl.egl

Class KHRFenceSync

java.lang.Object

org.lwjgl.egl.KHRFenceSync

public class KHRFenceSync
extends java.lang.Object

Native bindings to the KHR_fence_sync extension.

This extension introduces the concept of "sync objects" into EGL. Sync objects are a synchronization primitive, representing events whose completion can be tested or waited upon. This extension borrows heavily from the GL_ARB_sync extension and introduces a type of sync object known as a "fence sync object" comparable to the OpenGL fence sync object. The specification is designed to allow additional types of sync objects to be easily introduced in later extensions.

Fence sync objects have corresponding fence commands, which are inserted into a client API command stream at the time the fence sync is created. A fence sync object is used to wait for completion of the corresponding fence command. This allows applications to request a partial Finish of an API command stream, wherein all commands issued in a particular client API context will be forced to complete before control is returned to the calling thread.

This document describes three different extension strings collectively. The "EGL_KHR_fence_sync" string indicates that fence syncs and the corresponding interfaces (to create and place a fence, destroy, query, and wait on) are supported.

The remaining extensions list valid client APIs for fence syncs. The "GL_OES_EGL_sync" string indicates that a fence sync object can be created in association with a fence command placed in the command stream of a bound OpenGL ES context. The "VG_KHR_EGL_sync" string indicates the same thing for a bound OpenVG context.

Requires EGL 1.1.

Field Summary

Fields

Modifier and Type	Field	Description
static int	EGL_SYNC_CONDITION_KHR EGL_SYNC_FENCE_KHR EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR

Method Summary

Modifier and Type	Method	Description
static int	eglClientWaitSyncKHR(long dpy, long sync, int flags, long timeout)
static long	eglCreateSyncKHR(long dpy, int type, int[] attrib_list)	Array version of: CreateSyncKHR
static long	eglCreateSyncKHR(long dpy, int type, java.nio.IntBuffer attrib_list)
static boolean	eglDestroySyncKHR(long dpy, long sync)
static boolean	eglGetSyncAttribKHR(long dpy, long sync, int attribute, int[] value)	Array version of: GetSyncAttribKHR
static boolean	eglGetSyncAttribKHR(long dpy, long sync, int attribute, java.nio.IntBuffer value)
static long	neglCreateSyncKHR(long dpy, int type, long attrib_list)
static int	neglGetSyncAttribKHR(long dpy, long sync, int attribute, long value)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR

public static final int EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR

See Also:

Constant Field Values

EGL_SYNC_CONDITION_KHR

public static final int EGL_SYNC_CONDITION_KHR

See Also:

Constant Field Values

EGL_SYNC_FENCE_KHR

public static final int EGL_SYNC_FENCE_KHR

See Also:

Constant Field Values

Method Detail

neglCreateSyncKHR

public static long neglCreateSyncKHR(long dpy,
                                     int type,
                                     long attrib_list)

eglCreateSyncKHR

public static long eglCreateSyncKHR(long dpy,
                                    int type,
                                    @Nullable
                                    java.nio.IntBuffer attrib_list)

eglDestroySyncKHR

public static boolean eglDestroySyncKHR(long dpy,
                                        long sync)

eglClientWaitSyncKHR

public static int eglClientWaitSyncKHR(long dpy,
                                       long sync,
                                       int flags,
                                       long timeout)

neglGetSyncAttribKHR

public static int neglGetSyncAttribKHR(long dpy,
                                       long sync,
                                       int attribute,
                                       long value)

eglGetSyncAttribKHR

public static boolean eglGetSyncAttribKHR(long dpy,
                                          long sync,
                                          int attribute,
                                          java.nio.IntBuffer value)

eglCreateSyncKHR

public static long eglCreateSyncKHR(long dpy,
                                    int type,
                                    @Nullable
                                    int[] attrib_list)

Array version of: CreateSyncKHR

eglGetSyncAttribKHR

public static boolean eglGetSyncAttribKHR(long dpy,
                                          long sync,
                                          int attribute,
                                          int[] value)

Array version of: GetSyncAttribKHR