From 5f553ebd2a301e6019de9dc4c10d7125d19d2bcd Mon Sep 17 00:00:00 2001
From: Manolo Gouy <Manolo>
Date: Thu, 15 Feb 2018 07:02:26 +0000
Subject: OpenGL apps need to use Fl_Gl_Window::pixel_w() and pixel_h() when
 calling glViewport() to support GUI scaling.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12667 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 test/CubeView.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'test/CubeView.cxx')

diff --git a/test/CubeView.cxx b/test/CubeView.cxx
index 7a26ff186..5e153c675 100644
--- a/test/CubeView.cxx
+++ b/test/CubeView.cxx
@@ -139,7 +139,7 @@ void CubeView::drawCube() {
 void CubeView::draw() {
     if (!valid()) {
         glLoadIdentity();
-        glViewport(0,0,w(),h());
+        glViewport(0,0,pixel_w(),pixel_h());
         glOrtho(-10,10,-10,10,-20050,10000);
         glEnable(GL_BLEND);
         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-- 
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