Commit-ID: 7ae6095e5c1b28b4efc88056fea7fdd75e1fd82b
Gitweb: http://git.kernel.org/tip/7ae6095e5c1b28b4efc88056fea7fdd75e1fd82b
Author: Sasha Levin <levinsasha928@xxxxxxxxx>
AuthorDate: Thu, 9 Jun 2011 16:48:17 -0400
Committer: Pekka Enberg <penberg@xxxxxxxxxx>
CommitDate: Thu, 9 Jun 2011 08:32:28 +0300
kvm tools: Use double buffering with SDL
Page flip every time we copy the buffer over instead of invalidating
rects.
This should improve performance by letting hardware do the page
flipping.
Signed-off-by: Sasha Levin <levinsasha928@xxxxxxxxx>
Signed-off-by: Pekka Enberg <penberg@xxxxxxxxxx>
---
tools/kvm/ui/sdl.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/kvm/ui/sdl.c b/tools/kvm/ui/sdl.c
index bf2f7c9..aa3eff9 100644
--- a/tools/kvm/ui/sdl.c
+++ b/tools/kvm/ui/sdl.c
@@ -91,7 +91,7 @@ static void *sdl__thread(void *p)
if (!guest_screen)
die("Unable to create SDL RBG surface");
- flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
+ flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL | SDL_DOUBLEBUF;
screen = SDL_SetVideoMode(fb->width, fb->height, fb->depth, flags);
if (!screen)
@@ -99,7 +99,7 @@ static void *sdl__thread(void *p)
for (;;) {
SDL_BlitSurface(guest_screen, NULL, screen, NULL);
- SDL_UpdateRect(screen, 0, 0, 0, 0);
+ SDL_Flip(screen);
while (SDL_PollEvent(&ev)) {
switch (ev.type) {
--
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