From: DaeKwang Ryu <dkdk.ryu@samsung.com>
Date: Tue, 28 Jul 2015 08:16:24 +0000 (+0900)
Subject: [graphics] add resize guides in EvasGL, GLView
X-Git-Tag: tizen_3.0/TD_SYNC/20161201~659^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f7c834e01b1c64446761c33e9ceecd871c64ff2a;p=sdk%2Fonline-doc.git

[graphics] add resize guides in EvasGL, GLView

Change-Id: Ic794a67e5c41a5bd9179e3050fa8734196857cca
Signed-off-by: DaeKwang Ryu <dkdk.ryu@samsung.com>
---

diff --git a/org.tizen.guides/html/native/graphics/opengles_n.htm b/org.tizen.guides/html/native/graphics/opengles_n.htm
index 218b477..d8e6d7e 100644
--- a/org.tizen.guides/html/native/graphics/opengles_n.htm
+++ b/org.tizen.guides/html/native/graphics/opengles_n.htm
@@ -170,7 +170,8 @@ static void init_gl(Evas_Object *glview)
 }</pre>
 	</li>
 	<li>Callback for resizing
-	<p>The resize callback is called whenever the GLView component is resized. A common action to take here is to reset the viewport.</p>
+	<p>The resize callback is called whenever the GLView component is resized. A common action to take here is to reset the viewport. Because GLView size can be changed by a parent container, you should set a resize callback and should reset viewport size with new GLView size.
+</p>
 
 	<pre class="prettyprint">
 // GLView resize function
@@ -404,7 +405,7 @@ animate_cb(void *data)
 
 ecore_animator_add(animate_cb, ad-&gt;img);</pre>
 
-<p>You can define several other callbacks that have an impact on the drawing depending on the mouse, resize, and deletion events.</p>
+<p>You can define several other callbacks that have an impact on the drawing depending on the mouse, resize, and deletion events. Because window size can be changed, you should set a resize callback of a window. You should recreate a Evas_GL_Surface in the resize callback and should reset viewport size with new window size.</p>
 
 <pre class="prettyprint">
 evas_object_event_callback_add(ad-&gt;img, EVAS_CALLBACK_DEL, img_del_cb, ad);