I am trying to copy data within same buffer using glCopyBufferSubData().
array[24];
glCopyBufferSubData(GL_ARRAY_BUFFER,GL_ARRAY_BUFFE R,sizeof(array)/2,0,sizeof(array)) ;
glVertexAttribPointer(index,3, GL_FLOAT, GL_FALSE, 0,&array[12]);
glDrawElements();
Above code doesn't seem to work.
Any suggestions ?
