I create a vertex buffer object,and want to change the buffer data every frame,the only idea to do this is
1:Make a temp buffer, change this buffer data and then using glBufferSubData to change the vbo buffer
2:mapping the vbo buffer
I tend to use the second,but I found that if the vbo is a big buffer,it would use a long time
so is there any idea to mapping the vbo more effectively???