1 files changed, 128 insertions, 0 deletions
diff --git a/src/share/classes/sun/java2d/pipe/hw/ContextCapabilities.java b/src/share/classes/sun/java2d/pipe/hw/ContextCapabilities.java
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+++ b/src/share/classes/sun/java2d/pipe/hw/ContextCapabilities.java
@@ -0,0 +1,128 @@
+/*
+ * Copyright 2007-2008 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.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();
+    }
+}