diff mbox series

[PULL,40/52] ui/vc: skip text console resize when possible

Message ID 20230904115251.4161397-41-marcandre.lureau@redhat.com
State New
Headers show
Series [PULL,01/52] ui: remove qemu_pixman_color() helper | expand

Commit Message

Marc-André Lureau Sept. 4, 2023, 11:52 a.m. UTC 
From: Marc-André Lureau <marcandre.lureau@redhat.com>

This function is called on invalidate, on each cursor blink.

Avoid the extra copy when the console size didn't change.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230830093843.3531473-41-marcandre.lureau@redhat.com>
---
 ui/console.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)
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Patch

diff --git a/ui/console.c b/ui/console.c
index 0a48ce9159..4ee3b77568 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -413,13 +413,19 @@  static void text_console_resize(QemuTextConsole *t)
 {
     QemuConsole *s = QEMU_CONSOLE(t);
     TextCell *cells, *c, *c1;
-    int w1, x, y, last_width;
+    int w1, x, y, last_width, w, h;
 
     assert(s->scanout.kind == SCANOUT_SURFACE);
 
+    w = surface_width(s->surface) / FONT_WIDTH;
+    h = surface_height(s->surface) / FONT_HEIGHT;
+    if (w == t->width && h == t->height) {
+        return;
+    }
+
     last_width = t->width;
-    t->width = surface_width(s->surface) / FONT_WIDTH;
-    t->height = surface_height(s->surface) / FONT_HEIGHT;
+    t->width = w;
+    t->height = h;
 
     w1 = last_width;
     if (t->width < w1)