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	/*
	* Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package sun.java2d.pipe.hw;


	/**
	* Represents a set of capabilities of a BufferedContext and associated
	* AccelGraphicsConfig.
	*
	* @see AccelGraphicsConfig
	*/
	public class ContextCapabilities {
	/** Indicates that the context has no capabilities. */
	public static final int CAPS_EMPTY = (0 << 0);
	/** Indicates that the context supports RT surfaces with alpha channel. */
	public static final int CAPS_RT_PLAIN_ALPHA = (1 << 1);
	/** Indicates that the context supports RT textures with alpha channel. */
	public static final int CAPS_RT_TEXTURE_ALPHA = (1 << 2);
	/** Indicates that the context supports opaque RT textures. */
	public static final int CAPS_RT_TEXTURE_OPAQUE = (1 << 3);
	/** Indicates that the context supports multitexturing. */
	public static final int CAPS_MULTITEXTURE = (1 << 4);
	/** Indicates that the context supports non-pow2 texture dimensions. */
	public static final int CAPS_TEXNONPOW2 = (1 << 5);
	/** Indicates that the context supports non-square textures. */
	public static final int CAPS_TEXNONSQUARE = (1 << 6);
	/** Indicates that the context supports pixel shader 2.0 or better. */
	public static final int CAPS_PS20 = (1 << 7);
	/** Indicates that the context supports pixel shader 3.0 or better. */
	public static final int CAPS_PS30 = (1 << 8);
	/*
	* Pipeline contexts should use this for defining pipeline-specific
	* capabilities, for example:
	* int CAPS_D3D_1 = (FIRST_PRIVATE_CAP << 0);
	* int CAPS_D3D_2 = (FIRST_PRIVATE_CAP << 1);
	*/
	protected static final int FIRST_PRIVATE_CAP = (1 << 16);

	protected final int caps;
	protected final String adapterId;

	/**
	* Constructs a {@code ContextCapabilities} object.
	* @param caps an {@code int} representing the capabilities
	* @param a {@code String} representing the name of the adapter, or null,
	* in which case the adapterId will be set to "unknown adapter".
	*/
	protected ContextCapabilities(int caps, String adapterId) {
	this.caps = caps;
	this.adapterId = adapterId != null ? adapterId : "unknown adapter";
	}

	/**
	* Returns a string representing the name of the graphics adapter if such
	* could be determined. It is guaranteed to never return {@code null}.
	* @return string representing adapter id
	*/
	public String getAdapterId() {
	return adapterId;
	}

	/**
	* Returns an {@code int} with capabilities (OR-ed constants defined in
	* this class and its pipeline-specific subclasses).
	* @return capabilities as {@code int}
	*/
	public int getCaps() {
	return caps;
	}

	@Override
	public String toString() {
	StringBuffer buf =
	new StringBuffer("ContextCapabilities: adapter=" +
	adapterId+", caps=");
	if (caps == CAPS_EMPTY) {
	buf.append("CAPS_EMPTY");
	} else {
	if ((caps & CAPS_RT_PLAIN_ALPHA) != 0) {
	buf.append("CAPS_RT_PLAIN_ALPHA\|");
	}
	if ((caps & CAPS_RT_TEXTURE_ALPHA) != 0) {
	buf.append("CAPS_RT_TEXTURE_ALPHA\|");
	}
	if ((caps & CAPS_RT_TEXTURE_OPAQUE) != 0) {
	buf.append("CAPS_RT_TEXTURE_OPAQUE\|");
	}
	if ((caps & CAPS_MULTITEXTURE) != 0) {
	buf.append("CAPS_MULTITEXTURE\|");
	}
	if ((caps & CAPS_TEXNONPOW2) != 0) {
	buf.append("CAPS_TEXNONPOW2\|");
	}
	if ((caps & CAPS_TEXNONSQUARE) != 0) {
	buf.append("CAPS_TEXNONSQUARE\|");
	}
	if ((caps & CAPS_PS20) != 0) {
	buf.append("CAPS_PS20\|");
	}
	if ((caps & CAPS_PS30) != 0) {
	buf.append("CAPS_PS30\|");
	}
	}
	return buf.toString();
	}
	}

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