1 /*
   2  * Copyright (c) 2012, 2013, 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 com.sun.scenario.effect.impl.prism.ps;
  27 
  28 import com.sun.javafx.geom.Rectangle;
  29 import com.sun.javafx.geom.transform.BaseTransform;
  30 import com.sun.prism.RTTexture;
  31 import com.sun.scenario.effect.Effect;
  32 import com.sun.scenario.effect.FilterContext;
  33 import com.sun.scenario.effect.ImageData;
  34 import com.sun.scenario.effect.impl.Renderer;
  35 import com.sun.scenario.effect.impl.EffectPeer;
  36 import com.sun.scenario.effect.impl.prism.PrDrawable;
  37 import com.sun.scenario.effect.impl.prism.PrRenderer;
  38 import com.sun.scenario.effect.impl.prism.PrTexture;
  39 import com.sun.scenario.effect.impl.state.RenderState;
  40 
  41 public class PPStoPSWDisplacementMapPeer extends EffectPeer  {
  42     PrRenderer softwareRenderer;
  43     EffectPeer softwarePeer;
  44 
  45     public PPStoPSWDisplacementMapPeer(FilterContext fctx, Renderer r, String shaderName) {
  46         super(fctx, r, shaderName);
  47         softwareRenderer = PrRenderer.createSoftwareRenderer(fctx);
  48         softwarePeer = softwareRenderer.getPeerInstance(fctx, "DisplacementMap", 0);
  49     }
  50 
  51     @Override
  52     public ImageData filter(Effect effect,
  53                             RenderState rstate,
  54                             BaseTransform transform,
  55                             Rectangle outputClip,
  56                             ImageData... inputs)
  57     {
  58         ImageData input = inputs[0];
  59         PrTexture srcTex = (PrTexture) input.getUntransformedImage();
  60         RTTexture srcRT = (RTTexture) srcTex.getTextureObject();
  61         // The software renderer produces drawables that also implement HeapImage
  62         PrDrawable srcDrawable = softwareRenderer.createDrawable(srcRT);
  63         ImageData heapinput = new ImageData(input.getFilterContext(), srcDrawable,
  64                                             input.getUntransformedBounds());
  65         heapinput = heapinput.transform(input.getTransform());
  66 
  67         // The software peer will return a PrDrawable that can produce a
  68         // prism Texture on demand as needed.
  69         ImageData ret = softwarePeer.filter(effect, rstate, transform, outputClip, heapinput);
  70         // Note that heapinput should not be unref()ed since it shares the
  71         // rtt with input/srcTex and we do not want it to dispose the rtt.
  72         return ret;
  73     }
  74 }