From a2454d74cda161b0439638a644e17ad93ef39ed1 Mon Sep 17 00:00:00 2001
From: Alex Szpakowski <slime73@gmail.com>
Date: Sun, 21 Jan 2018 17:35:57 -0400
Subject: [PATCH] Fix some DPI scale calculations to work with depth-only
 rendering.

---
 src/modules/graphics/Graphics.cpp | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/src/modules/graphics/Graphics.cpp b/src/modules/graphics/Graphics.cpp
index 3befca862..38543fb4a 100644
--- a/src/modules/graphics/Graphics.cpp
+++ b/src/modules/graphics/Graphics.cpp
@@ -334,11 +334,9 @@ int Graphics::getPixelHeight() const
 
 double Graphics::getCurrentDPIScale() const
 {
-	if (states.back().renderTargets.colors.size() > 0)
-	{
-		Canvas *c = states.back().renderTargets.getFirstTarget().canvas.get();
-		return (double) c->getPixelHeight() / (double) c->getHeight();
-	}
+	const auto &rt = states.back().renderTargets.getFirstTarget();
+	if (rt.canvas.get())
+		return rt.canvas->getDPIScale();
 
 	return getScreenDPIScale();
 }