4ca77f347d
We were generating a packed copy and then memcpying it, but we can just pack directly to the destination. Change on glmark2 -b build:use-vbo=true is modest: 1.06328% +/- 0.994771% (n=84) but does remove the function that was .6% of CPU time. I'm not doing the equivalent "get" path at this time because softpipe's texture cache has some clipping issues that get revealed. Reviewed-by: Marek Olšák <marek.olsak@amd.com> Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3698> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3698>