glinvalidatebuffersubdata(3g) [centos man page]

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 (C) 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							    06/10/2014						  GLINVALIDATEBUFFERSU(3G)

GLFLUSHMAPPEDBUFFERR(3G)					    OpenGL 3.3						  GLFLUSHMAPPEDBUFFERR(3G)

NAME

       glFlushMappedBufferRange - indicate modifications to a range of a mapped buffer

C SPECIFICATION

       GLsync glFlushMappedBufferRange(GLenum target, GLintptr offset, GLsizeiptr length);

PARAMETERS

       target
	   Specifies the target of the flush operation.  target must be GL_ARRAY_BUFFER, GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER,
	   GL_ELEMENT_ARRAY_BUFFER, GL_PIXEL_PACK_BUFFER, GL_PIXEL_UNPACK_BUFFER, GL_TEXTURE_BUFFER, GL_TRANSFORM_FEEDBACK_BUFFER, or
	   GL_UNIFORM_BUFFER.

       offset
	   Specifies the start of the buffer subrange, in basic machine units.

       length
	   Specifies the length of the buffer subrange, in basic machine units.

DESCRIPTION

       glFlushMappedBufferRange indicates that modifications have been made to a range of a mapped buffer. The buffer must previously have been
       mapped with the GL_MAP_FLUSH_EXPLICIT flag.  offset and length indicate the modified subrange of the mapping, in basic units. The specified
       subrange to flush is relative to the start of the currently mapped range of the buffer.	glFlushMappedBufferRange may be called multiple
       times to indicate distinct subranges of the mapping which require flushing.

ERRORS

       GL_INVALID_VALUE is generated if offset or length is negative, or if offset + length exceeds the size of the mapping.

       GL_INVALID_OPERATION is generated if zero is bound to target.

       GL_INVALID_OPERATION is generated if the buffer bound to target is not mapped, or is mapped without the GL_MAP_FLUSH_EXPLICIT flag.

SEE ALSO

       glMapBufferRange(), glMapBuffer(), glUnmapBuffer()

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/.

OpenGL 3.3							    03/08/2011						  GLFLUSHMAPPEDBUFFERR(3G)