From db0bdc71eec40d7fcd22ddcea87178c8805d4312 Mon Sep 17 00:00:00 2001 From: Kenneth Russel Date: Thu, 7 Aug 2003 19:53:38 +0000 Subject: 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 --- .../java/games/gluegen/runtime/BufferFactory.java | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'src/net/java/games/gluegen/runtime/BufferFactory.java') diff --git a/src/net/java/games/gluegen/runtime/BufferFactory.java b/src/net/java/games/gluegen/runtime/BufferFactory.java index 2efb78ca6..67ffea1d8 100644 --- a/src/net/java/games/gluegen/runtime/BufferFactory.java +++ b/src/net/java/games/gluegen/runtime/BufferFactory.java @@ -47,4 +47,29 @@ public class BufferFactory { buf.order(ByteOrder.nativeOrder()); return buf; } + + /** Helper routine to tell whether a buffer is direct or not. Null + pointers are considered direct. isDirect() should really be + public in Buffer and not replicated in all subclasses. */ + public static boolean isDirect(Buffer buf) { + if (buf == null) { + return true; + } + if (buf instanceof ByteBuffer) { + return ((ByteBuffer) buf).isDirect(); + } else if (buf instanceof FloatBuffer) { + return ((FloatBuffer) buf).isDirect(); + } else if (buf instanceof DoubleBuffer) { + return ((DoubleBuffer) buf).isDirect(); + } else if (buf instanceof CharBuffer) { + return ((CharBuffer) buf).isDirect(); + } else if (buf instanceof ShortBuffer) { + return ((ShortBuffer) buf).isDirect(); + } else if (buf instanceof IntBuffer) { + return ((IntBuffer) buf).isDirect(); + } else if (buf instanceof LongBuffer) { + return ((LongBuffer) buf).isDirect(); + } + throw new RuntimeException("Unknown buffer type " + buf.getClass().getName()); + } } -- cgit v1.2.3