glLockArraysEXT man page on SunOS

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GLLOCKARRAYSEXT(3gl)					  GLLOCKARRAYSEXT(3gl)

NAME
       glLockArraysEXT - lock the enabled vertex arrays

       glUnlockArraysEXT - unlock the enabled vertex arrays

C SPECIFICATION
       void glLockArraysEXT( GLint first,
			     GLsizei count )

       void glUnlockArraysEXT(void)

PARAMETERS
       first  Specifies the starting index of the locked array elements.

       count  Specifies the number of array elements to be locked.

DESCRIPTION
       The  currently  enabled	vertex	arrays	can be locked with the command
       glLockArraysEXT.	 When the vertex arrays are locked, the GL can compile
       the array data or the transformed results of array data associated with
       the currently enabled vertex arrays.  The vertex arrays are unlocked by
       the command glUnlockArraysEXT.

       Between	glLockArraysEXT	 and  glUnlockArraysEXT the application should
       ensure that none of the array data in the range of  elements  specified
       by  first and count are changed.	 Changes to the array data between the
       execution of glLockArraysEXT and glUnlockArraysEXT commands may	affect
       calls  to  glDrawArrays,	 glArrayElement, or glDrawElements commands in
       non-sequential ways.

       While using a compiled vertex array, references to  array  elements  by
       the commands glDrawArrays, glArrayElement, or glDrawElements  which are
       outside of the range specified by first and count are undefined.

NOTES
       glLockArraysEXT and glUnlockArraysEXT are  not  complied	 into  display
       lists but are executed immediately.

ERRORS
       GL_INVALID_VALUE is generated if first is negative.

       GL_INVALID_VALUE is generated if count is negative.

       GL_INVALID_OPERATION   is  generated  if	 glLockArraysEXT  is  executed
       between the execution of glLockArraysEXT and  the  corresponding	 glUn‐
       lockArraysEXT.

       GL_INVALID_OPERATION  is generated if glUnlockArraysEXT is called with‐
       out a corresponding previous execution of glLockArraysEXT.

       GL_INVALID_OPERATION is generated if glLockArraysEXT or	glUnlockArray‐
       sEXT  is	 called between the execution of glBegin and the corresponding
       glEnd.

				  30 April 01		  GLLOCKARRAYSEXT(3gl)
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