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)

GLCLEARBUFFERSUBDATA(3G)					   OpenGL Manual					  GLCLEARBUFFERSUBDATA(3G)

NAME

       glClearBufferSubData - fill all or part of buffer object's data store with a fixed value

C SPECIFICATION

       void glClearBufferSubData(GLenum target, GLenum internalformat, GLintptr offset, GLsizeiptr size, GLenum format, GLenum type,
				 const void * data);

PARAMETERS

       target
	   Specify the target of the operation.  target must be one of the global buffer binding targets.

       internalformat
	   The internal format with which the data will be stored in the buffer object.

       offset
	   The offset, in basic machine units into the buffer object's data store at which to start filling.

       size
	   The size, in basic machine units of the range of the data store to fill.

       format
	   The format of the data in memory addressed by data.

       type
	   The type of the data in memory addressed by data.

       data
	   The address of a memory location storing the data to be replicated into the buffer's data store.

DESCRIPTION

       glClearBufferSubData fills a specified region of a buffer object's data store with data from client memory.  offset and size demark the
       extent of the region within the data store of the buffer object bound to target to fill with data. Data, initially supplied in a format
       specified by format in data type type is read from the memory address given by data and converted into the internal representation given by
       internalforamt. This converted data is then replicated throughout the specified region of the buffer object's data store.

       If data is NULL, then the subrange of the buffer's data store is filled with zeros.

ERRORS

       GL_INVALID_ENUM is generated if target not one of the generic buffer binding targets.

       GL_INVALID_VALUE is generated if no buffer is bound to target.

       GL_INVALID_ENUM is generated if internalformat is not a sized internal format.

       GL_INVALID_VALUE is generated if offset or range are not multiples of the number of basic machine units per-element for the internal format
       specified by internalformat.

       GL_INVALID_VALUE is generated if offset or size is less than zero, or if offset + size is greater than the value of GL_BUFFER_SIZE for the
       buffer bound to target.

       GL_INVALID_OPERATION is generated if any part of the specified buffer range is mapped with glMapBufferRange() or glMapBuffer().

SEE ALSO

       glClearBufferData().

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						  GLCLEARBUFFERSUBDATA(3G)