2362N/A * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved. 0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 0N/A * This code is free software; you can redistribute it and/or modify it 0N/A * under the terms of the GNU General Public License version 2 only, as 2362N/A * published by the Free Software Foundation. Oracle designates this 0N/A * particular file as subject to the "Classpath" exception as provided 2362N/A * by Oracle in the LICENSE file that accompanied this code. 0N/A * This code is distributed in the hope that it will be useful, but WITHOUT 0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 0N/A * version 2 for more details (a copy is included in the LICENSE file that 0N/A * accompanied this code). 0N/A * You should have received a copy of the GNU General Public License version 0N/A * 2 along with this work; if not, write to the Free Software Foundation, 0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2362N/A * or visit www.oracle.com if you need additional information or have any 0N/A * The MaskBlit operation is expressed as: 0N/A * dst = ((src <MODE> dst) * pathA) + (dst * (1 - pathA)) 0N/A * The OGL/D3D implementation of the MaskBlit operation differs from the above 0N/A * equation because it is not possible to perform such a complex operation in 0N/A * shaders and multitexturing). Therefore, the BufferedMaskBlit operation 0N/A * dst = (src * pathA) <SrcOver> dst 0N/A * This simplified formula is only equivalent to the "true" MaskBlit equation 0N/A * in the following situations: 0N/A * - <MODE> is SrcOver 0N/A * - <MODE> is Src, extra alpha == 1.0, and the source surface is opaque 0N/A * Therefore, we register BufferedMaskBlit primitives for only the SurfaceType 0N/A * and CompositeType restrictions mentioned above. In addition for the Src 0N/A * case, we must override the composite with a SrcOver (no extra alpha) 0N/A * BufferedMaskBlit equation. 0N/A // no mask involved; delegate to regular blit loop 0N/A * REMIND: we should fix this so that it works with tiles that 0N/A * are larger than the entire buffer, but the native 0N/A * than 32x32 pixels, so there's no urgency here... 0N/A // enqueue parameters and tile pixels 0N/A * Validates the context state using the given destination surface