diff --git a/app/scripts/platform.gd b/app/scripts/platform.gd
index c52d77a..9e6b3ad 100644
--- a/app/scripts/platform.gd
+++ b/app/scripts/platform.gd
@@ -19,6 +19,10 @@ static func is_linux() -> bool:
 	return get_platform() == LINUX_BSD
 
 
+static func is_macos() -> bool:
+	return get_platform() == MACOS
+
+
 static func is_debug() -> bool:
 	return OS.is_debug_build()
 
diff --git a/app/scripts/sandbox/render_result.gd b/app/scripts/sandbox/render_result.gd
index dfc246a..0fa0bce 100644
--- a/app/scripts/sandbox/render_result.gd
+++ b/app/scripts/sandbox/render_result.gd
@@ -8,8 +8,8 @@ class_name RenderResult
 var ext_texure: ExternalTexture
 var texture_rid: RID
 
-@onready var width: int = int(ui_events.current_ui_size.x)
-@onready var height: int = int(ui_events.current_ui_size.y)
+@onready var width: int = get_viewport().size.x / (2 if Platform.is_macos() else 1)
+@onready var height: int = get_viewport().size.y / (2 if Platform.is_macos() else 1)
 
 
 func _ready() -> void: