NAME

       glFlushMappedBufferRange - indicate modifications to a range of a mapped buffer

C SPECIFICATION

       void 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_DISPATCH_INDIRECT_BUFFER,
           GL_DRAW_INDIRECT_BUFFER, GL_ELEMENT_ARRAY_BUFFER, GL_PIXEL_PACK_BUFFER,
           GL_PIXEL_UNPACK_BUFFER, GL_QUERY_BUFFER, GL_SHADER_STORAGE_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_BIT 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.

NOTES

       The GL_DISPATCH_INDIRECT_BUFFER and GL_SHADER_STORAGE_BUFFER targets are available only if
       the GL version is 4.3 or greater.

       The GL_QUERY_BUFFER target is available only if the GL version is 4.4 or greater.

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_BIT flag.

SEE ALSO

       glMapBufferRange(), glMapBuffer(), glUnmapBuffer()

COPYRIGHT

       Copyright © 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