// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

/**

 @file

 @publishedPartner

 @prototype

*/

#ifndef SGCONST_H

#define SGCONST_H

#include <graphics/sgerror.h>

/**

@publishedPartner

@prototype

@deprecated

Identifier of the primary screen, which always exists.

*/

const TInt KSgScreenIdMain = 0;

/**

@publishedPartner

@prototype

@deprecated

Value that specifies, when passed in as screen identifier, that a resource can be

used on all screens.

*/

const TInt KSgScreenIdAny = -1;

/**

@publishedPartner

@prototype

@deprecated

Set of flags that specify how a graphics resource can be used in different rendering

pipelines.

*/

enum TSgUsageFlags

	{

	/** The resource cannot be used in any rendering pipeline. */

	ESgUsageNone = 0,

	/** The resource can be bound as source of DirectGDI rendering. */

	ESgUsageDirectGdiSource = 0x0001,

	/** The resource can be bound as target of DirectGDI rendering. */

	ESgUsageDirectGdiTarget = 0x0002,

	/** The resource can be bound as source of the composition engine. */

	ESgUsageCompositionSource = 0x0004,

	/** The resource can be bound as target of the composition engine. */

	ESgUsageCompositionTarget = 0x0008,

	/** The resource can be used directly as screen contents. */

	ESgUsageScreenSource = 0x0010,

	/** The resource can be bound as OpenGL ES 1.X 2D texture. */

	ESgUsageOpenGlesTexture2D = 0x0020,

	/** The resource can be bound as target of OpenGL ES 1.X rendering. */

	ESgUsageOpenGlesTarget = 0x0040,

	/** The resource can be bound as OpenVG image. */

	ESgUsageOpenVgImage = 0x0080,

	/** The resource can be bound as target of OpenVG rendering. */

	ESgUsageOpenVgTarget = 0x0100,

	/** The resource can be used as destination in calls to eglCopyBuffers(). */

	ESgUsageEglCopyBuffersTarget = 0x0200,

	/** The resource can be bound as OpenGL ES 2.0 2D texture. */

	ESgUsageOpenGles2Texture2D = 0x0400,

	/** The resource can be bound as target of OpenGL ES 2.0 rendering. */

	ESgUsageOpenGles2Target = 0x0800,

	/** The resource can be bound as source of window graphics context rendering. @see CWindowGc */

	ESgUsageWindowGcSource = 0x1000

	};

/**

@publishedPartner

@prototype

@deprecated

Components of TSgCpuAccess. This enumeration is not intended to be used directly, but

provides components for the definition of TSgCpuAccess.

*/

enum TSgCpuAccessComponents

	{

	/** Value of the bit in TSgCpuAccess that indicates ability to read when set. */

	ESgCpuAccessReadable = 1,

	/** Value of the bit in TSgCpuAccess that indicates ability to write when set. */

	ESgCpuAccessWritable = 2

	};

/**

@publishedPartner

@prototype

@deprecated

Enumeration used to specify how a graphics resource can be accessed by the CPU.

*/

enum TSgCpuAccess

	{

	/** The resource cannot be accessed by the CPU. */

	ESgCpuAccessNone = 0,

	/** The resource can only be read by the CPU. */

	ESgCpuAccessReadOnly = ESgCpuAccessReadable,

	/** The resource can only be written by the CPU. */

	ESgCpuAccessWriteOnly = ESgCpuAccessWritable,

	/** The resource can be both read and written by the CPU. */

	ESgCpuAccessReadWrite = ESgCpuAccessReadable | ESgCpuAccessWritable

	};

#endif // SGCONST_H