Showing the changes to java/pkg/sun/java2d/pipe/BufferedMaskBlit.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,163 @@ | |||
| 1 | /* | ||
| 2 | * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.java2d.pipe; | ||
| 27 | |||
| 28 | import java.awt.AlphaComposite; | ||
| 29 | import java.awt.Composite; | ||
| 30 | import sun.java2d.SurfaceData; | ||
| 31 | import sun.java2d.loops.Blit; | ||
| 32 | import sun.java2d.loops.CompositeType; | ||
| 33 | import sun.java2d.loops.MaskBlit; | ||
| 34 | import sun.java2d.loops.SurfaceType; | ||
| 35 | import static sun.java2d.pipe.BufferedOpCodes.*; | ||
| 36 | |||
| 37 | /** | ||
| 38 | * The MaskBlit operation is expressed as: | ||
| 39 | * dst = ((src <MODE> dst) * pathA) + (dst * (1 - pathA)) | ||
| 40 | * | ||
| 41 | * The OGL/D3D implementation of the MaskBlit operation differs from the above | ||
| 42 | * equation because it is not possible to perform such a complex operation in | ||
| 43 | * OpenGL/Direct3D (without the use of advanced techniques like fragment | ||
| 44 | * shaders and multitexturing). Therefore, the BufferedMaskBlit operation | ||
| 45 | * is expressed as: | ||
| 46 | * dst = (src * pathA) <SrcOver> dst | ||
| 47 | * | ||
| 48 | * This simplified formula is only equivalent to the "true" MaskBlit equation | ||
| 49 | * in the following situations: | ||
| 50 | * - <MODE> is SrcOver | ||
| 51 | * - <MODE> is Src, extra alpha == 1.0, and the source surface is opaque | ||
| 52 | * | ||
| 53 | * Therefore, we register BufferedMaskBlit primitives for only the SurfaceType | ||
| 54 | * and CompositeType restrictions mentioned above. In addition for the Src | ||
| 55 | * case, we must override the composite with a SrcOver (no extra alpha) | ||
| 56 | * instance, so that we set up the OpenGL/Direct3D blending mode to match the | ||
| 57 | * BufferedMaskBlit equation. | ||
| 58 | */ | ||
| 59 | public abstract class BufferedMaskBlit extends MaskBlit { | ||
| 60 | |||
| 61 | private static final int ST_INT_ARGB = 0; | ||
| 62 | private static final int ST_INT_ARGB_PRE = 1; | ||
| 63 | private static final int ST_INT_RGB = 2; | ||
| 64 | private static final int ST_INT_BGR = 3; | ||
| 65 | |||
| 66 | private final RenderQueue rq; | ||
| 67 | private final int srcTypeVal; | ||
| 68 | private Blit blitop; | ||
| 69 | |||
| 70 | protected BufferedMaskBlit(RenderQueue rq, | ||
| 71 | SurfaceType srcType, | ||
| 72 | CompositeType compType, | ||
| 73 | SurfaceType dstType) | ||
| 74 | { | ||
| 75 | super(srcType, compType, dstType); | ||
| 76 | this.rq = rq; | ||
| 77 | if (srcType == SurfaceType.IntArgb) { | ||
| 78 | this.srcTypeVal = ST_INT_ARGB; | ||
| 79 | } else if (srcType == SurfaceType.IntArgbPre) { | ||
| 80 | this.srcTypeVal = ST_INT_ARGB_PRE; | ||
| 81 | } else if (srcType == SurfaceType.IntRgb) { | ||
| 82 | this.srcTypeVal = ST_INT_RGB; | ||
| 83 | } else if (srcType == SurfaceType.IntBgr) { | ||
| 84 | this.srcTypeVal = ST_INT_BGR; | ||
| 85 | } else { | ||
| 86 | throw new InternalError("unrecognized source surface type"); | ||
| 87 | } | ||
| 88 | } | ||
| 89 | |||
| 90 | @Override | ||
| 91 | public void MaskBlit(SurfaceData src, SurfaceData dst, | ||
| 92 | Composite comp, Region clip, | ||
| 93 | int srcx, int srcy, | ||
| 94 | int dstx, int dsty, | ||
| 95 | int width, int height, | ||
| 96 | byte[] mask, int maskoff, int maskscan) | ||
| 97 | { | ||
| 98 | if (width <= 0 || height <= 0) { | ||
| 99 | return; | ||
| 100 | } | ||
| 101 | |||
| 102 | if (mask == null) { | ||
| 103 | // no mask involved; delegate to regular blit loop | ||
| 104 | if (blitop == null) { | ||
| 105 | blitop = Blit.getFromCache(src.getSurfaceType(), | ||
| 106 | CompositeType.AnyAlpha, | ||
| 107 | this.getDestType()); | ||
| 108 | } | ||
| 109 | blitop.Blit(src, dst, | ||
| 110 | comp, clip, | ||
| 111 | srcx, srcy, dstx, dsty, | ||
| 112 | width, height); | ||
| 113 | return; | ||
| 114 | } | ||
| 115 | |||
| 116 | AlphaComposite acomp = (AlphaComposite)comp; | ||
| 117 | if (acomp.getRule() != AlphaComposite.SRC_OVER) { | ||
| 118 | comp = AlphaComposite.SrcOver; | ||
| 119 | } | ||
| 120 | |||
| 121 | rq.lock(); | ||
| 122 | try { | ||
| 123 | validateContext(dst, comp, clip); | ||
| 124 | |||
| 125 | RenderBuffer buf = rq.getBuffer(); | ||
| 126 | int totalBytesRequired = 20 + (width * height * 4); | ||
| 127 | |||
| 128 | /* | ||
| 129 | * REMIND: we should fix this so that it works with tiles that | ||
| 130 | * are larger than the entire buffer, but the native | ||
| 131 | * OGL/D3DMaskBlit isn't even prepared for tiles larger | ||
| 132 | * than 32x32 pixels, so there's no urgency here... | ||
| 133 | */ | ||
| 134 | rq.ensureCapacity(totalBytesRequired); | ||
| 135 | |||
| 136 | // enqueue parameters and tile pixels | ||
| 137 | int newpos = enqueueTile(buf.getAddress(), buf.position(), | ||
| 138 | src, src.getNativeOps(), srcTypeVal, | ||
| 139 | mask, mask.length, maskoff, maskscan, | ||
| 140 | srcx, srcy, dstx, dsty, | ||
| 141 | width, height); | ||
| 142 | |||
| 143 | buf.position(newpos); | ||
| 144 | } finally { | ||
| 145 | rq.unlock(); | ||
| 146 | } | ||
| 147 | } | ||
| 148 | |||
| 149 | private native int enqueueTile(long buf, int bpos, | ||
| 150 | SurfaceData srcData, | ||
| 151 | long pSrcOps, int srcType, | ||
| 152 | byte[] mask, int masklen, | ||
| 153 | int maskoff, int maskscan, | ||
| 154 | int srcx, int srcy, int dstx, int dsty, | ||
| 155 | int width, int height); | ||
| 156 | |||
| 157 | /** | ||
| 158 | * Validates the context state using the given destination surface | ||
| 159 | * and composite/clip values. | ||
| 160 | */ | ||
| 161 | protected abstract void validateContext(SurfaceData dstData, | ||
| 162 | Composite comp, Region clip); | ||
| 163 | } | ||