diff --git a/examples/example1/src/example1.d b/examples/example1/src/example1.d
index d93722b8..998ae83a 100644
--- a/examples/example1/src/example1.d
+++ b/examples/example1/src/example1.d
@@ -1014,8 +1014,9 @@ static if (ENABLE_OPENGL) {
 		override void animate(long interval) {
 			if (_oldApi) {
 				// rotate gears
-				angle += interval * 0.000005f;
+				angle += interval * 0.000002f;
 			} else {
+				// animate new API example
 			}
 			invalidate();
 		}
@@ -1205,9 +1206,6 @@ static if (ENABLE_OPENGL) {
         glxgears_reshape(Rect rc)
     {
         GLfloat h = cast(GLfloat) rc.height / cast(GLfloat) rc.width;
-        
-        glViewport(rc.top, rc.left, cast(GLint)rc.width, cast(GLint)rc.height);
-        //glViewport(0, 0, cast(GLint) width, cast(GLint) height);
         glMatrixMode(GL_PROJECTION);
         glLoadIdentity();
         glFrustum(-1.0, 1.0, -h, h, 5.0, 60.0);
diff --git a/src/dlangui/graphics/gldrawbuf.d b/src/dlangui/graphics/gldrawbuf.d
index 9bf3f496..74de1d39 100644
--- a/src/dlangui/graphics/gldrawbuf.d
+++ b/src/dlangui/graphics/gldrawbuf.d
@@ -923,10 +923,12 @@ public:
 	}
 	override void draw() {
 		if (_handler) {
+
 			import derelict.opengl3.gl3 : glViewport;
-			glViewport(_rc.left, _rc.top, _rc.right, _rc.bottom);
+			glViewport(_rc.left, _buf.height - _rc.bottom, _rc.width, _rc.height);
 			_handler(_buf, _rc);
 			glSupport.setOrthoProjection(Rect(0, 0, _buf.width, _buf.height));
+
 		}
 	}
 }