Gets Harvey's changes

1 files changed, 77 insertions, 0 deletions

diff --git a/src/javax/media/j3d/DepthComponentNativeRetained.java b/src/javax/media/j3d/DepthComponentNativeRetained.java
new file mode 100644
index 0000000..220a328
--- /dev/null
+++ b/src/javax/media/j3d/DepthComponentNativeRetained.java
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+/*
+ * Copyright 1998-2008 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 javax.media.j3d;
+
+/**
+ * A 2D array of depth (Z) values stored in the most efficient format for a
+ * particular device.  Values are not accessible by the user and may only be
+ * used to read the Z values and subsequently write them back.
+ */
+
+class DepthComponentNativeRetained extends DepthComponentRetained {
+    // Change this to whatever native format is best...
+    int depthData[];
+
+    /**
+     * Constructs a new native depth (z-buffer) component object with the
+     * specified width and height.
+     * @param width the width of the array of depth values
+     * @param height the height of the array of depth values
+     */
+    void initialize(int width, int height) {
+        type = DEPTH_COMPONENT_TYPE_NATIVE;
+        depthData = new int[width * height];
+        this.width = width;
+        this.height = height;
+    }
+
+    /**
+     * Copies the depth data from this object to the specified array.
+     * @param depthData array of ints that will receive a copy of
+     * the depth data
+     */
+    void getDepthData(int[] depthData) {
+        int i;
+        for (i = 0; i < this.depthData.length; i++)
+            depthData[i] = this.depthData[i];
+    }
+
+    /**
+     * retrieve depth data from input buffer
+     */
+    final void retrieveDepth(int[] buf, int wRead, int hRead) {
+        int srcOffset, dstOffset, i;
+
+        // Yup -> Ydown
+        for (srcOffset = (hRead - 1) * wRead, dstOffset = 0,
+                i = 0; i < hRead; i++,
+             srcOffset -= wRead, dstOffset += width) {
+
+            System.arraycopy(buf, srcOffset, depthData, dstOffset, wRead);
+        }
+    }
+}