From 09e2bdaeba3d822143c1ae8fab3538cfbe9345d8 Mon Sep 17 00:00:00 2001
From: Tristan Giles <tristanbgiles@protonmail.com>
Date: Sat, 30 Jan 2021 18:08:47 -0800
Subject: [PATCH] Clear framebuffer on containers that are visible windows

---
 RELEASE-NOTES-next | 1 +
 src/x.c            | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/RELEASE-NOTES-next b/RELEASE-NOTES-next
index 439fa9053..ed0a17502 100644
--- a/RELEASE-NOTES-next
+++ b/RELEASE-NOTES-next
@@ -31,3 +31,4 @@ strongly encouraged to upgrade.
   • i3bar: properly restart status command after config change
   • i3bar: exit with 1 when a wrong command line argument is used
   • fix commented-out rofi call in default i3 config
+  • clear pixmap before drawing to prevent visual garbage
diff --git a/src/x.c b/src/x.c
index 76679b9fb..c9ef07f7a 100644
--- a/src/x.c
+++ b/src/x.c
@@ -537,6 +537,9 @@ void x_draw_decoration(Con *con) {
 
     /* 2: draw the client.background, but only for the parts around the window_rect */
     if (con->window != NULL) {
+        /* Clear visible windows before beginning to draw */
+        draw_util_clear_surface(&(con->frame_buffer), (color_t){.red = 0.0, .green = 0.0, .blue = 0.0});
+
         /* top area */
         draw_util_rectangle(&(con->frame_buffer), config.client.background,
                             0, 0, r->width, w->y);