[PATCH] retrace: Implement glxCopySubBufferMESA

[Alexander Monakov]

On Thu, 17 Oct 2013, Carl Worth wrote:

> This enables replay of a trace captured on ChromeOS.
> 
> Note: Replaying on EGL is not supported, (will trigger an abort),
> since, as far as I know, EGL does not provide an equivalent function.

My preference would be to issue a warning and continue replaying; this is what
happens on GLX if the underlying driver does not implement this function.

Other than that, I looked at the patch and it looks good to me.

I'll note that this function, like glFinish and glFlush, is almost, but not
quite, a candidate for "this call concludes drawing a frame" flag.

Alexander