On 25 May 2018 at 10:23, Jiří Janoušek <janousek.j...@gmail.com> wrote:
> Hello, > > My app consists of the main process, where the GTK+ main loop and widgetry > live, and the GPU process, which does OpenGL kung-fu and provides GL > texture and dirty/invalidated rectangles as a result. I have little control > over the GPU process - I can patch it a bit, but I cannot merge the main > and GPU process, for example. > > If I understand it correctly, I cannot simply share GL textures between the > processes and use e.g. gdk_cairo_draw_from_gl(). I can transfer the pixel > buffer via IPC, store it in the main process, call > gtk_widget_queue_draw_area(), and finally paint it in the draw signal > handler, but that is slow and involves a lot of copying. > > Do you have any suggestions what could be a better way to draw the GL > texture from a different process? With GTK 3.22 and under Xorg. > You can store the texture data as an X11 Pixmap object, and use the GLX_EXT_texture_from_pixmap extension to get a GL texture object out of a Pixmap XID. Ciao, Emmanuele. -- https://www.bassi.io [@] ebassi [@gmail.com] _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
