diff --git a/changes.txt b/changes.txt
index 408a87b8..02bdce47 100644
--- a/changes.txt
+++ b/changes.txt
@@ -1,5 +1,6 @@
 --------------------------
 Changes in 1.9 (not yet released)
+- IGUIEnvironment::drawAll has now a parameter to allow disabling automatic resize to screensize. Makes it easier to use partial screens with full alignment support.
 - No longer try to set WM_QUIT when using an external Window on Win32. 
   Thx @Marko Mahnic for the patch (https://sourceforge.net/p/irrlicht/bugs/449)
 - ply meshloader now also supports textures with uv-labels named texture_u/texture_v. 
diff --git a/include/IGUIEnvironment.h b/include/IGUIEnvironment.h
index 695b41b8..b670d969 100644
--- a/include/IGUIEnvironment.h
+++ b/include/IGUIEnvironment.h
@@ -74,7 +74,9 @@ class IGUIEnvironment : public virtual IReferenceCounted
 public:
 
 	//! Draws all gui elements by traversing the GUI environment starting at the root node.
-	virtual void drawAll() = 0;
+	/** \param  When true ensure the GuiEnvironment (aka the RootGUIElement) has the same size as the current driver screensize. 
+	            Can be set to false to control that size yourself, p.E when not the full size should be used for UI. */
+	virtual void drawAll(bool useScreenSize=true) = 0;
 
 	//! Sets the focus to an element.
 	/** Causes a EGET_ELEMENT_FOCUS_LOST event followed by a
diff --git a/source/Irrlicht/CGUIEnvironment.cpp b/source/Irrlicht/CGUIEnvironment.cpp
index e29195b2..0f0dc18b 100644
--- a/source/Irrlicht/CGUIEnvironment.cpp
+++ b/source/Irrlicht/CGUIEnvironment.cpp
@@ -191,19 +191,18 @@ void CGUIEnvironment::loadBuiltInFont()
 
 
 //! draws all gui elements
-void CGUIEnvironment::drawAll()
+void CGUIEnvironment::drawAll(bool useScreenSize)
 {
-	if (Driver)
+	if (useScreenSize && Driver)
 	{
 		core::dimension2d<s32> dim(Driver->getScreenSize());
 		if (AbsoluteRect.LowerRightCorner.X != dim.Width ||
-			AbsoluteRect.LowerRightCorner.Y != dim.Height)
+			AbsoluteRect.UpperLeftCorner.X != 0 ||
+			AbsoluteRect.LowerRightCorner.Y != dim.Height ||
+			AbsoluteRect.UpperLeftCorner.Y != 0
+			)
 		{
-			// resize gui environment
-			DesiredRect.LowerRightCorner = dim;
-			AbsoluteClippingRect = DesiredRect;
-			AbsoluteRect = DesiredRect;
-			updateAbsolutePosition();
+			setRelativePosition(core::recti(0,0,dim.Width, dim.Height));
 		}
 	}
 
diff --git a/source/Irrlicht/CGUIEnvironment.h b/source/Irrlicht/CGUIEnvironment.h
index 58b7f545..f8b03230 100644
--- a/source/Irrlicht/CGUIEnvironment.h
+++ b/source/Irrlicht/CGUIEnvironment.h
@@ -31,7 +31,7 @@ public:
 	virtual ~CGUIEnvironment();
 
 	//! draws all gui elements
-	virtual void drawAll() _IRR_OVERRIDE_;
+	virtual void drawAll(bool useScreenSize) _IRR_OVERRIDE_;
 
 	//! returns the current video driver
 	virtual video::IVideoDriver* getVideoDriver() const _IRR_OVERRIDE_;
diff --git a/tests/tests-last-passed-at.txt b/tests/tests-last-passed-at.txt
index faa44d9c..15f31461 100644
--- a/tests/tests-last-passed-at.txt
+++ b/tests/tests-last-passed-at.txt
@@ -1,4 +1,4 @@
 Tests finished. 72 tests of 72 passed.
-Compiled as RELEASE
-Test suite pass at GMT Tue Nov 10 18:42:40 2020
+Compiled as DEBUG
+Test suite pass at GMT Tue Dec 01 13:34:31 2020