2013 Khronos Group glInvalidateBufferSubData 3G glInvalidateBufferSubData invalidate a region of a buffer object's data store void glInvalidateBufferSubData GLuint buffer GLintptr offset GLsizeiptr length 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. 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. 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. glGetBufferParameter with argument GL_BUFFER_SIZE glInvalidateTexSubImage,, glInvalidateTexImage, glInvalidateBufferData, glInvalidateFramebuffer, glInvalidateSubFramebuffer. Copyright 2013 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/.