glgetsynciv(3g) [centos man page]

GLGETSYNCIV(3G) 						   OpenGL Manual						   GLGETSYNCIV(3G)

NAME

       glGetSynciv - query the properties of a sync object

C SPECIFICATION

       void glGetSynciv(GLsync sync, GLenum pname, GLsizei bufSize, GLsizei *length, GLint *values);

PARAMETERS

       sync
	   Specifies the sync object whose properties to query.

       pname
	   Specifies the parameter whose value to retrieve from the sync object specified in sync.

       bufSize
	   Specifies the size of the buffer whose address is given in values.

       length
	   Specifies the address of an variable to receive the number of integers placed in values.

       values
	   Specifies the address of an array to receive the values of the queried parameter.

DESCRIPTION

       glGetSynciv retrieves properties of a sync object.  sync specifies the name of the sync object whose properties to retrieve.

       On success, glGetSynciv replaces up to bufSize integers in values with the corresponding property values of the object being queried. The
       actual number of integers replaced is returned in the variable whose address is specified in length. If length is NULL, no length is
       returned.

       If pname is GL_OBJECT_TYPE, a single value representing the specific type of the sync object is placed in values. The only type supported
       is GL_SYNC_FENCE.

       If pname is GL_SYNC_STATUS, a single value representing the status of the sync object (GL_SIGNALED or GL_UNSIGNALED) is placed in values.

       If pname is GL_SYNC_CONDITION, a single value representing the condition of the sync object is placed in values. The only condition
       supported is GL_SYNC_GPU_COMMANDS_COMPLETE.

       If pname is GL_SYNC_FLAGS, a single value representing the flags with which the sync object was created is placed in values. No flags are
       currently supported[1].

       If an error occurs, nothing will be written to values or length.

ERRORS

       GL_INVALID_VALUE is generated if sync is not the name of a sync object.

       GL_INVALID_ENUM is generated if pname is not one of the accepted tokens.

SEE ALSO

       glFenceSync(), glWaitSync(), glClientWaitSync()

COPYRIGHT

       Copyright (C) 2010 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication
       License, v 1.0, 8 June 1999.  http://opencontent.org/openpub/.

AUTHORS

       opengl.org

NOTES

	1. flags is expected to be used in future extensions to the sync objects.

opengl.org							    06/10/2014							   GLGETSYNCIV(3G)

Check Out this Related Man Page

GLCLIENTWAITSYNC(3G)						   OpenGL Manual					      GLCLIENTWAITSYNC(3G)

NAME

       glClientWaitSync - block and wait for a sync object to become signaled

C SPECIFICATION

       GLenum glClientWaitSync(GLsync sync, GLbitfield flags, GLuint64 timeout);

PARAMETERS

       sync
	   The sync object whose status to wait on.

       flags
	   A bitfield controlling the command flushing behavior.  flags may be GL_SYNC_FLUSH_COMMANDS_BIT.

       timeout
	   The timeout, specified in nanoseconds, for which the implementation should wait for sync to become signaled.

DESCRIPTION

       glClientWaitSync causes the client to block and wait for the sync object specified by sync to become signaled. If sync is signaled when
       glClientWaitSync is called, glClientWaitSync returns immediately, otherwise it will block and wait for up to timeout nanoseconds for sync
       to become signaled.

       The return value is one of four status values:

       o   GL_ALREADY_SIGNALED indicates that sync was signaled at the time that glClientWaitSync was called.

       o   GL_TIMEOUT_EXPIRED indicates that at least timeout nanoseconds passed and sync did not become signaled.

       o   GL_CONDITION_SATISFIED indicates that sync was signaled before the timeout expired.

       o   GL_WAIT_FAILED indicates that an error occurred. Additionally, an OpenGL error will be generated.

NOTES

       glClientWaitSync is available only if the GL version is 3.2 or greater.

ERRORS

       GL_INVALID_VALUE is generated if sync is not the name of an existing sync object.

       GL_INVALID_VALUE is generated if flags contains any unsupported flag.

SEE ALSO

       glFenceSync(), glIsSync()glWaitSync()

COPYRIGHT

       Copyright (C) 2010 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication
       License, v 1.0, 8 June 1999.  http://opencontent.org/openpub/.

AUTHORS

       opengl.org

opengl.org							    06/10/2014						      GLCLIENTWAITSYNC(3G)

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glgetsynciv(3g) [centos man page]

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