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GLINVALIDATEFRAMEBUF(3G)	 OpenGL Manual	      GLINVALIDATEFRAMEBUF(3G)

NAME
       glInvalidateFramebuffer - invalidate the content some or all of a
       framebuffer object's attachments

C SPECIFICATION
       void glInvalidateFramebuffer(GLenum target, GLsizei numAttachments,
				    const GLenum * attachments);

PARAMETERS
       target
	   The target to which the framebuffer is attached.  target must be
	   GL_FRAMEBUFFER, GL_DRAW_FRAMEBUFFER, or GL_READ_FRAMEBUFFER.

       numAttachments
	   The number of entries in the attachments array.

       attachments
	   The address of an array identifying the attachments to be
	   invalidated.

DESCRIPTION
       glInvalidateFramebuffer invalidates the content of a specified set of
       attachments of a framebuffer. The framebuffer whose content to
       invalidate is indicated by setting target to the target to which it is
       bound.  target may be GL_FRAMEBUFFER, GL_READ_FRAMEBUFFER or
       GL_DRAW_FRAMEBUFFER.  GL_FRAMEBUFFER is treated as if it were
       GL_DRAW_FRAMEBUFFER.

       The set of attachments whose content to invalidate are specified in an
       array whose address is given by attachments and which contains
       numAttachments elements. The elements of attachments must be
       GL_DEPTH_ATTACHMENT, GL_STENCIL_ATTACHMENT GL_DEPTH_STENCIL_ATTACHMENT,
       or GL_COLOR_ATTACHMENTi, where i is between zero and the value of
       GL_MAX_FRAMEBUFFER_ATTACHMENTS minus one. Furthermore, if the default
       framebuffer is bound to target, then attachments may contain
       GL_FRONT_LEFT, GL_FRONT_RIGHT, GL_BACK_LEFT, GL_BACK_RIGHT, GL_AUXi,
       GL_ACCUM, GL_COLOR, GL_DEPTH, or GL_STENCIL, identifying that specific
       buffer.	GL_COLOR, is treated as GL_BACK_LEFT for a double-buffered
       context and GL_FRONT_LEFT for a single-buffered context. After
       glInvalidateFramebuffer is executed, the contents of the specified
       attachments become undefined.

ERRORS
       GL_INVALID_ENUM is generated if target is not one of the accepted
       framebuffer target tokens.

       GL_INVALID_ENUM is generated if any element of attachments is not one
       of the accepted framebuffer attachment tokens.

       GL_INVALID_OPERATION is generated if element of attachments is
       GL_COLOR_ATTACHMENTi where i is greater than or equal to the value of
       GL_MAX_COLOR_ATTACHMENTS.

ASSOCIATED GETS
       glGet() with argument GL_MAX_COLOR_ATTACHMENTS

SEE ALSO
       glInvalidateTexSubImage(), glInvalidateTexImage(),
       glInvalidateBufferSubData(), glInvalidateBufferData(),
       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	      GLINVALIDATEFRAMEBUF(3G)

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