1 /*
   2  * Copyright (c) 2009, 2012, 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.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 package com.oracle.graal.compiler.hsail.test;
  25 
  26 import com.oracle.graal.compiler.hsail.test.infra.GraalKernelTester;
  27 import org.junit.Test;
  28 
  29 /**
  30  * Unit test that simulates the Mandelbrot application. The run method here is a static method
  31  * version of the original mandel kernel and the invoke parameters are for the starting point of the
  32  * mandel demo. Note: this will likely not pass the junit test on real hardware, but should pass on
  33  * the simulator.
  34  */
  35 public class StaticMandelTest extends GraalKernelTester {
  36 
  37     static final int initWidth = 768;
  38     static final int initHeight = initWidth;
  39     static final int maxIterations = 64;
  40     static final int range = initWidth * initHeight;
  41     @Result private int[] rgb = new int[range];
  42 
  43     public static void run(int[] rgb, int[] pallette, float xoffset, float yoffset, float scale, int gid) {
  44         final int width = initWidth;
  45         final int height = initHeight;
  46         float lx = (((gid % width * scale) - ((scale / 2) * width)) / width) + xoffset;
  47         float ly = (((gid / width * scale) - ((scale / 2) * height)) / height) + yoffset;
  48         int count = 0;
  49         float zx = lx;
  50         float zy = ly;
  51         float newzx = 0f;
  52 
  53         // Iterate until the algorithm converges or until maxIterations are reached.
  54         while (count < maxIterations && zx * zx + zy * zy < 8) {
  55             newzx = zx * zx - zy * zy + lx;
  56             zy = 2 * zx * zy + ly;
  57             zx = newzx;
  58             count++;
  59         }
  60         rgb[gid] = pallette[count];
  61     }
  62 
  63     void setupPalette(int[] in) {
  64         for (int i = 0; i < in.length; i++) {
  65             in[i] = i;
  66         }
  67     }
  68 
  69     @Override
  70     public void runTest() {
  71         int[] palette = new int[256];
  72         setupPalette(palette);
  73         /**
  74          * Call it for a range, specifying testmethod args (but not the fields it uses or the gid
  75          * argument).
  76          */
  77         dispatchMethodKernel(range, rgb, palette, -1f, 0f, 3f);
  78     }
  79 
  80     @Test
  81     public void test() {
  82         testGeneratedHsail();
  83     }
  84 }