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authorKenneth Russel <[email protected]>2003-08-07 19:53:38 +0000
committerKenneth Russel <[email protected]>2003-08-07 19:53:38 +0000
commitdb0bdc71eec40d7fcd22ddcea87178c8805d4312 (patch)
treed04e66f83bcf5eeeaa5283f17a86f9093d678e1c /src/net/java/games/jogl
parentdd16a976876a779dc0ee6da9ebf5ada29f5781c7 (diff)
Changed glMapBufferARB's implementation to return the same ByteBuffer
if the address and capacity of the underlying buffer object haven't changed. This saves applications the cost of re-slicing the returned buffer each frame and avoids allocation of one or more finalizable objects per frame. Moved GlueGen's checking of whether a passed buffer is direct up into Java from C to be able to handle buffers that wrap the NULL pointer (needed for the "buffer offsets" used by ARB_vertex_buffer_object). Ported the VertexArrayRange demo to VertexBufferObject. Currently slower than VertexArrayRange but needs to be updated to triangulate the geometry more efficiently (currently the triangle strips are only 48 vertices long) and to move the indices into fast RAM. git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@47 232f8b59-042b-4e1e-8c03-345bb8c30851
Diffstat (limited to 'src/net/java/games/jogl')
-rw-r--r--src/net/java/games/jogl/impl/InternalBufferUtils.java55
1 files changed, 55 insertions, 0 deletions
diff --git a/src/net/java/games/jogl/impl/InternalBufferUtils.java b/src/net/java/games/jogl/impl/InternalBufferUtils.java
new file mode 100644
index 000000000..707ebbe93
--- /dev/null
+++ b/src/net/java/games/jogl/impl/InternalBufferUtils.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * - Redistribution of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed or intended for use
+ * in the design, construction, operation or maintenance of any nuclear
+ * facility.
+ *
+ * Sun gratefully acknowledges that this software was originally authored
+ * and developed by Kenneth Bradley Russell and Christopher John Kline.
+ */
+
+package net.java.games.jogl.impl;
+
+import java.nio.*;
+
+/** Utility routines available only to the JOGL implementation. */
+
+public class InternalBufferUtils {
+ /** Allocates a new direct byte buffer at the given address with the
+ given capacity. This is exposed only because of glMapBufferARB
+ and its semantics; it is undesirable to allocate a new buffer
+ every frame because (a) ByteBuffers are finalizable and (b) the
+ application would typically need to re-slice the buffer every
+ frame. Instead we cache these ByteBuffer objects up in Java and
+ look them up in a HashMap by base address and capacity. */
+ public static native ByteBuffer newDirectByteBuffer(long address, int capacity);
+}