From cd958edb1fae85d0c7d1e1acbff82d22724e8d64 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Date: Fri, 26 Aug 2016 13:47:11 +0400 Subject: console: skip same-size resize MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit virtio-gpu does a set-scanout at each frame (it might be a driver regression). qemu_console_resize() recreate a surface even if the size didn't change, and this shows up in profiling reports because the surface is cleared. With this patch, I get a +15-20% glmark2 improvement. Signed-off-by: Marc-André Lureau Message-id: 20160826094711.14470-1-marcandre.lureau@redhat.com Signed-off-by: Gerd Hoffmann --- ui/console.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/ui/console.c b/ui/console.c index 3940762851..394786b3c7 100644 --- a/ui/console.c +++ b/ui/console.c @@ -2101,6 +2101,13 @@ void qemu_console_resize(QemuConsole *s, int width, int height) DisplaySurface *surface; assert(s->console_type == GRAPHIC_CONSOLE); + + if (s->surface && + pixman_image_get_width(s->surface->image) == width && + pixman_image_get_height(s->surface->image) == height) { + return; + } + surface = qemu_create_displaysurface(width, height); dpy_gfx_replace_surface(s, surface); } -- cgit v1.2.3