Re: [PATCH 2/4] wined3d: Do not use double-buffered dynamic buffers

[Henri Verbeet]

On 28 February 2012 12:19, Stefan Dösinger  wrote:
> This is for bug 30019.
>
> They are a lot slower than using no VBO at all in at least some, if not all
> games. The reason for the slowdown is the memcpy call, not the buffer
> map.

I don't find this all that convincing either. My impression is that
the reason we have these kinds of problems is mostly that the buffer
conversion code is broken. I don't think there are legitimate cases
where not creating a VBO should improve performance.