1 /*
   2  * Copyright (c) 2011, 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,
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  23  * questions.
  24  */
  25 
  26 <<
  27 private LinearConvolveKernel getKernel() {
  28     return (LinearConvolveKernel) AccessHelper.getState(getEffect());
  29 }
  30 
  31 public int getPow2ScaleX(LinearConvolveKernel kernel) {
  32     return kernel.getPow2ScaleX();
  33 }
  34 
  35 public int getPow2ScaleY(LinearConvolveKernel kernel) {
  36     return kernel.getPow2ScaleY();
  37 }
  38 
  39 public Rectangle getResultBounds(com.sun.javafx.geom.transform.BaseTransform transform,
  40                                  com.sun.javafx.geom.Rectangle outputClip,
  41                                  com.sun.scenario.effect.ImageData... inputDatas)
  42 {
  43     return getKernel().getScaledResultBounds(inputDatas[0].getTransformedBounds(outputClip), getPass());
  44 }
  45 
  46 private int getCount() {
  47     return (getKernel().getScaledKernelSize(getPass()) + 3) / 4;
  48 }
  49 
  50 private float[] getOffset() {
  51     return getKernel().getVector(getInputNativeBounds(0), getInputTransform(0), getPass());
  52 }
  53 
  54 private FloatBuffer getWeights() {
  55     return getKernel().getWeights(getPass());
  56 }
  57 
  58 private int getWeightsArrayLength() {
  59     return getKernel().getWeightsArrayLength(getPass());
  60 }
  61 >>
  62 
  63 param sampler img;
  64 param int count;
  65 // offset.x = dx offset between adjacent weighted convolution samples
  66 // offset.y = dy offset between adjacent weighted convolution samples
  67 // offset.z = dx offset to first weighted convolution sample
  68 // offset.w = dy offset to first weighted convolution sample
  69 param float4 offset;
  70 // value for each location in the offsets array:
  71 //   weights[i].x = weight for pos0 + offset + i*direction*4+0
  72 //   weights[i].y = weight for pos0 + offset + i*direction*4+1
  73 //   weights[i].z = weight for pos0 + offset + i*direction*4+2
  74 //   weights[i].w = weight for pos0 + offset + i*direction*4+3
  75 param float4 weights[%d];
  76 
  77 void main()
  78 {
  79     int i;
  80     float4 tmp = float4(0.0, 0.0, 0.0, 0.0);
  81     float2 loc = pos0 + offset.zw;
  82     unroll (%d, 0) for (i = 0; i < count; i++) {
  83         tmp += weights[i].x * sample(img, loc);
  84         loc += offset.xy;
  85         tmp += weights[i].y * sample(img, loc);
  86         loc += offset.xy;
  87         tmp += weights[i].z * sample(img, loc);
  88         loc += offset.xy;
  89         tmp += weights[i].w * sample(img, loc);
  90         loc += offset.xy;
  91     }
  92     color = tmp;
  93 }