/* * Copyright (c) 2007, 2008, 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();    }}