Unix/Linux Go Back    


CentOS 7.0 - man page for glbuffersubdata (centos section 3G)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)


GLBUFFERSUBDATA(3G)			  OpenGL Manual 		      GLBUFFERSUBDATA(3G)

NAME
       glBufferSubData - updates a subset of a buffer object's data store

C SPECIFICATION
       void glBufferSubData(GLenum target, GLintptr offset, GLsizeiptr size,
			    const GLvoid * data);

PARAMETERS
       target
	   Specifies the target buffer object. The symbolic constant must be GL_ARRAY_BUFFER,
	   GL_ATOMIC_COUNTER_BUFFER, GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER,
	   GL_DRAW_INDIRECT_BUFFER, GL_DISPATCH_INDIRECT_BUFFER, GL_ELEMENT_ARRAY_BUFFER,
	   GL_PIXEL_PACK_BUFFER, GL_PIXEL_UNPACK_BUFFER, GL_SHADER_STORAGE_BUFFER,
	   GL_TEXTURE_BUFFER, GL_TRANSFORM_FEEDBACK_BUFFER, or GL_UNIFORM_BUFFER.

       offset
	   Specifies the offset into the buffer object's data store where data replacement will
	   begin, measured in bytes.

       size
	   Specifies the size in bytes of the data store region being replaced.

       data
	   Specifies a pointer to the new data that will be copied into the data store.

DESCRIPTION
       glBufferSubData redefines some or all of the data store for the buffer object currently
       bound to target. Data starting at byte offset offset and extending for size bytes is
       copied to the data store from the memory pointed to by data. An error is thrown if offset
       and size together define a range beyond the bounds of the buffer object's data store.

NOTES
       When replacing the entire data store, consider using glBufferSubData rather than
       completely recreating the data store with glBufferData. This avoids the cost of
       reallocating the data store.

       Consider using multiple buffer objects to avoid stalling the rendering pipeline during
       data store updates. If any rendering in the pipeline makes reference to data in the buffer
       object being updated by glBufferSubData, especially from the specific region being
       updated, that rendering must drain from the pipeline before the data store can be updated.

       Clients must align data elements consistent with the requirements of the client platform,
       with an additional base-level requirement that an offset within a buffer to a datum
       comprising N bytes be a multiple of N.

       The GL_ATOMIC_COUNTER_BUFFER target is available only if the GL version is 4.2 or greater.

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

ERRORS
       GL_INVALID_ENUM is generated if target is not one of the accepted buffer targets.

       GL_INVALID_VALUE is generated if offset or size is negative, or if together they define a
       region of memory that extends beyond the buffer object's allocated data store.

       GL_INVALID_OPERATION is generated if the reserved buffer object name 0 is bound to target.

       GL_INVALID_OPERATION is generated if the buffer object being updated is mapped.

ASSOCIATED GETS
       glGetBufferSubData()

SEE ALSO
       glBindBuffer(), glBufferData(), glMapBuffer(), glUnmapBuffer()

COPYRIGHT
       Copyright (C) 2005 Addison-Wesley. 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			      GLBUFFERSUBDATA(3G)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums


All times are GMT -4. The time now is 01:22 PM.