On 9 October 2015 at 13:30, Boyan Ding <boyan.j.d...@gmail.com> wrote: > 2015-10-09 8:38 GMT+08:00 Dave Airlie <airl...@gmail.com>: >> From: Dave Airlie <airl...@redhat.com> >> >> So I've known this was broken before, cogl has a workaround >> for it from what I know, but with the gallium based swrast >> drivers BlitFramebuffer from back to front or vice-versa >> was pretty broken. >> >> The legacy swrast driver tracks when a front buffer is used >> and does the get/put images when it is mapped/unmapped, >> so this patch attempts to add the same functionality to the >> gallium drivers. >> >> It creates a new context interface to denote when a front >> buffer is being created, and passes a private pointer to it, >> this pointer is then used to decide on map/unmap if the >> contents should be updated from the real frontbuffer using >> get/put image. >> >> This is primarily to make gtk's gl code work, the only >> thing I've tested so far is the glarea test from >> https://github.com/ebassi/glarea-example.git >> >> v2: bump extension version, >> check extension version before calling get image. (Ian) >> >> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91930 >> >> Signed-off-by: Dave Airlie <airl...@redhat.com> > > Hi Dave, > > I'm wondering if it is necessary to implement the new interface of > swrastLoader in egl. If you think so, I may try to work on it in a > few days. The X11 part of egl is somewhat funny since it uses pure > xcb. Maybe the code there will need xcb-utils-image. > > I came up with the question above after I tested glarea on GNOME > wayland with sw rendering, where it seems to work all right. It seems > GLArea in gtk is using EGL on wayland while using glx on X.
EGL doesn't support front buffer rendering from what I know, so I don't think the interface is required there. So I don't think there is a requirement for this interface on egl. Dave. _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
