From a9a0d0fb15cc5e028dbf8dab8b46d3dc197c4678 Mon Sep 17 00:00:00 2001
From: Guilherme Felipe <guilhermefelipecgs@gmail.com>
Date: Mon, 8 Jul 2019 17:37:18 -0300
Subject: Fix cursor blinking in integrated GPUs

Optimization for Input::set_custom_mouse_cursor when used inside
_process function. (Avoids cursor blinking in low end devices)
---
 platform/javascript/os_javascript.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'platform/javascript/os_javascript.cpp')

diff --git a/platform/javascript/os_javascript.cpp b/platform/javascript/os_javascript.cpp
index d96ffc3a55..5363cd4af7 100644
--- a/platform/javascript/os_javascript.cpp
+++ b/platform/javascript/os_javascript.cpp
@@ -448,6 +448,18 @@ void OS_JavaScript::set_cursor_shape(CursorShape p_shape) {
 void OS_JavaScript::set_custom_mouse_cursor(const RES &p_cursor, CursorShape p_shape, const Vector2 &p_hotspot) {
 
 	if (p_cursor.is_valid()) {
+
+		Map<CursorShape, Vector<Variant> >::Element *cursor_c = cursors_cache.find(p_shape);
+
+		if (cursor_c) {
+			if (cursor_c->get()[0] == p_cursor && cursor_c->get()[1] == p_hotspot) {
+				set_cursor_shape(p_shape);
+				return;
+			}
+
+			cursors_cache.erase(p_shape);
+		}
+
 		Ref<Texture> texture = p_cursor;
 		Ref<AtlasTexture> atlas_texture = p_cursor;
 		Ref<Image> image;
@@ -551,6 +563,11 @@ void OS_JavaScript::set_custom_mouse_cursor(const RES &p_cursor, CursorShape p_s
 
 		cursors[p_shape] = url;
 
+		Vector<Variant> params;
+		params.push_back(p_cursor);
+		params.push_back(p_hotspot);
+		cursors_cache.insert(p_shape, params);
+
 	} else if (cursors[p_shape] != "") {
 		/* clang-format off */
 		EM_ASM({
-- 
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