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GLINVALIDATEBUFFERSU(3G)	 OpenGL Manual	      GLINVALIDATEBUFFERSU(3G)

NAME
       glInvalidateBufferSubData - invalidate a region of a buffer object's
       data store

C SPECIFICATION
       void glInvalidateBufferSubData(GLuint buffer, GLintptr offset,
				      GLsizeiptr length);

PARAMETERS
       buffer
	   The name of a buffer object, a subrange of whose data store to
	   invalidate.

       offset
	   The offset within the buffer's data store of the start of the range
	   to be invalidated.

       length
	   The length of the range within the buffer's data store to be
	   invalidated.

DESCRIPTION
       glInvalidateBufferSubData invalidates all or part of the content of the
       data store of a buffer object. After invalidation, the content of the
       specified range of the buffer's data store becomes undefined. The start
       of the range is given by offset and its size is given by length, both
       measured in basic machine units.

ERRORS
       GL_INVALID_VALUE is generated if offset or length is negative, or if
       offset + length is greater than the value of GL_BUFFER_SIZE for buffer.

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

       GL_INVALID_OPERATION is generated if any part of buffer is currently
       mapped.

ASSOCIATED GETS
       glGetBufferParameter() with argument GL_BUFFER_SIZE

SEE ALSO
       glInvalidateTexSubImage(),, glInvalidateTexImage(),
       glInvalidateBufferData(), glInvalidateFramebuffer(),
       glInvalidateSubFramebuffer().

COPYRIGHT
       Copyright © 2012 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			  03/16/2013	      GLINVALIDATEBUFFERSU(3G)

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