From f3974671f6a1eaf91d2b00b34f481d49b295002d Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 18 Feb 2019 10:10:04 +0530
Subject: [PATCH] macOS: Reduce energy consumption by not rendering occluded
 windows

---
 docs/changelog.rst | 2 ++
 kitty/glfw.c       | 8 +++++---
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/docs/changelog.rst b/docs/changelog.rst
index ce9aa4bf0..0b51c5dda 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -50,6 +50,8 @@ To update |kitty|, :doc:`follow the instructions <binary>`.
 
 - macOS: Add a number of common macOS keyboard shortcuts
 
+- macOS: Reduce energy consumption by not rendering occluded windows
+
 - Fix scrollback pager history not being cleared when clearing the
   main scrollback buffer (:iss:`1387`)
 
diff --git a/kitty/glfw.c b/kitty/glfw.c
index f5c87c908..eda64acbd 100644
--- a/kitty/glfw.c
+++ b/kitty/glfw.c
@@ -869,9 +869,11 @@ mark_os_window_for_close(OSWindow* w, bool yes) {
 
 bool
 should_os_window_be_rendered(OSWindow* w) {
-    if (glfwGetWindowAttrib(w->handle, GLFW_ICONIFIED)) return false;
-    if (!glfwGetWindowAttrib(w->handle, GLFW_VISIBLE)) return false;
-    return true;
+    return (
+            glfwGetWindowAttrib(w->handle, GLFW_ICONIFIED) ||
+            !glfwGetWindowAttrib(w->handle, GLFW_VISIBLE) ||
+            glfwGetWindowAttrib(w->handle, GLFW_OCCLUDED)
+       ) ? false : true;
 }
 
 bool