diff -r 39e5f73667ba -r c2ef9095503a hostsupport/hostegl/src/EGLThread.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hostsupport/hostegl/src/EGLThread.cpp	Wed Oct 06 17:59:01 2010 +0100
@@ -0,0 +1,126 @@
+/* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and /or associated documentation files
+ * (the "Materials "), to deal in the Materials without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Materials,
+ * and to permit persons to whom the Materials are furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Materials.
+ *
+ * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR
+ * THE USE OR OTHER DEALINGS IN THE MATERIALS.
+ *
+ * Initial Contributors:
+ * Nokia Corporation - initial contribution.
+ *
+ * Contributors:
+ *
+ * Description:
+ *
+ */
+
+#include "EGLThread.h"
+#include "EGLContext.h"
+#include "EGLSurface.h"
+
+CEGLThread::CEGLThread( EGLI_THREAD_ID threadId, EGLint supportedApis ) :
+    m_id( threadId ),
+    m_currentVGContext( NULL ),
+    m_currentVGSurface( NULL ),
+    m_currentGLESContext( NULL ),
+	m_currentGLESReadSurface( NULL ),
+    m_currentGLESDrawSurface( NULL ),
+    m_currentApi( EGL_OPENGL_ES_API ),
+    m_lastError( EGL_SUCCESS ),
+    m_supportedApis( supportedApis )
+    {
+    }
+
+CEGLThread::~CEGLThread(void)
+    {
+    }
+
+bool CEGLThread::IsSupportedApi( EGLenum api ) const
+    {
+    bool ret = false;
+    switch( api )
+        {
+        case EGL_OPENVG_API:
+            {
+            if( m_supportedApis & EGL_OPENVG_BIT )
+                ret = true;
+            break;
+            }
+        case EGL_OPENGL_ES_API:
+            {
+            if( m_supportedApis & EGL_OPENGL_ES_BIT ||
+                m_supportedApis & EGL_OPENGL_ES2_BIT )
+                ret = true;
+            break;
+            }
+        }
+    return ret;
+    }
+
+CEGLContext* CEGLThread::SwitchVGContext( CEGLContext* vgContext )
+    {
+    CEGLContext* ret = m_currentVGContext;
+    if( vgContext != m_currentVGContext )
+        {
+        m_currentVGContext = vgContext;
+        if( vgContext ) vgContext->SetThread( this );
+        if( ret ) ret->SetThread( NULL );
+        }
+    return ret;
+    }
+
+CEGLSurface* CEGLThread::SwitchVGSurface( CEGLSurface* vgSurface )
+    {
+    CEGLSurface* ret = m_currentVGSurface;
+    if( vgSurface != m_currentVGSurface )
+        {
+        m_currentVGSurface = vgSurface;
+        if( vgSurface ) vgSurface->SetThread( this );
+        if( ret ) ret->SetThread( NULL );
+        }
+    return ret;
+    }
+
+CEGLContext* CEGLThread::SwitchGLESContext( CEGLContext* glesContext )
+    {
+    CEGLContext* ret = m_currentGLESContext;
+    if( glesContext != m_currentGLESContext )
+        {
+        m_currentGLESContext = glesContext;
+        if( glesContext ) glesContext->SetThread( this );
+        if( ret ) ret->SetThread( NULL );
+        }
+    return ret;
+    }
+
+void CEGLThread::SwitchGLESSurfaces( CEGLSurface* read, CEGLSurface* draw, CEGLSurface*& previousRead, CEGLSurface*& previousDraw )
+    {
+    previousRead = m_currentGLESReadSurface;
+    previousDraw = m_currentGLESDrawSurface;
+    m_currentGLESReadSurface = read;
+    if( read ) read->SetThread( this );
+    if( previousRead && previousRead != read ) previousRead->SetThread( NULL );
+    m_currentGLESDrawSurface = draw;
+    if( draw ) draw->SetThread( this );
+    if( previousDraw && previousDraw != draw ) previousDraw->SetThread( NULL );
+    }
+
+void CEGLThread::CurrentGLESSurfaces( CEGLSurface** read, CEGLSurface** draw ) const
+    {
+    if( read ) *read = m_currentGLESReadSurface;
+    if( draw ) *draw = m_currentGLESDrawSurface;
+    }
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