1 /******************************************************************************* 2 * Copyright 2011 See AUTHORS file. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 ******************************************************************************/ 16 17 package com.badlogic.gdx.tests; 18 19 import com.badlogic.gdx.Gdx; 20 import com.badlogic.gdx.math.Matrix4; 21 import com.badlogic.gdx.math.Vector3; 22 import com.badlogic.gdx.tests.utils.GdxTest; 23 import com.badlogic.gdx.utils.GdxRuntimeException; 24 import com.badlogic.gdx.utils.TimeUtils; 25 26 public class MatrixJNITest extends GdxTest { 27 @Override create()28 public void create () { 29 Matrix4 mat1 = new Matrix4(); 30 Matrix4 mat2 = new Matrix4(); 31 Matrix4 mat3 = new Matrix4(); 32 Vector3 vec = new Vector3(1, 2, 3); 33 float[] fvec = {1, 2, 3}; 34 float[] fvecs = {1, 2, 3, 0, 0, 1, 2, 3, 0, 0, 1, 2, 3, 0, 0}; 35 36 mat1.setToRotation(0, 1, 0, 45); 37 mat2.setToRotation(1, 0, 0, 45); 38 39 vec.mul(mat1); 40 Matrix4.mulVec(mat1.val, fvec); 41 Matrix4.mulVec(mat1.val, fvecs, 0, 3, 5); 42 check(vec, fvec); 43 check(vec, fvecs, 3, 5); 44 45 vec.prj(mat1); 46 Matrix4.prj(mat1.val, fvec); 47 Matrix4.prj(mat1.val, fvecs, 0, 3, 5); 48 check(vec, fvec); 49 check(vec, fvecs, 3, 5); 50 51 vec.rot(mat1); 52 Matrix4.rot(mat1.val, fvec); 53 Matrix4.rot(mat1.val, fvecs, 0, 3, 5); 54 check(vec, fvec); 55 check(vec, fvecs, 3, 5); 56 57 if (mat1.det() != Matrix4.det(mat1.val)) throw new GdxRuntimeException("det doesn't work"); 58 59 mat2.set(mat1); 60 mat1.inv(); 61 Matrix4.inv(mat2.val); 62 check(mat1, mat2); 63 64 mat3.set(mat1); 65 mat1.mul(mat2); 66 Matrix4.mul(mat3.val, mat2.val); 67 check(mat1, mat3); 68 69 bench(); 70 71 System.out.println("All tests passed."); 72 } 73 bench()74 private void bench () { 75 Matrix4 mata = new Matrix4(); 76 Matrix4 matb = new Matrix4(); 77 78 long start = TimeUtils.nanoTime(); 79 for (int i = 0; i < 1000000; i++) { 80 mata.mul(matb); 81 } 82 Gdx.app.log("MatrixJNITest", "java matrix * matrix took: " + (TimeUtils.nanoTime() - start) / 1000000000.0f); 83 84 start = TimeUtils.nanoTime(); 85 for (int i = 0; i < 1000000; i++) { 86 Matrix4.mul(mata.val, matb.val); 87 } 88 Gdx.app.log("MatrixJNITest", "jni matrix * matrix took: " + (TimeUtils.nanoTime() - start) / 1000000000.0f); 89 90 Vector3 vec = new Vector3(); 91 start = TimeUtils.nanoTime(); 92 for (int i = 0; i < 500000; i++) { 93 vec.mul(mata); 94 } 95 Gdx.app.log("MatrixJNITest", "java vecs * matrix took: " + (TimeUtils.nanoTime() - start) / 1000000000.0f); 96 97 float[] fvec = new float[3]; 98 start = TimeUtils.nanoTime(); 99 for (int i = 0; i < 500000; i++) { 100 Matrix4.mulVec(mata.val, fvec); 101 } 102 Gdx.app.log("MatrixJNITest", "jni vecs * matrix took: " + (TimeUtils.nanoTime() - start) / 1000000000.0f); 103 104 float[] fvecs = new float[3 * 500000]; 105 start = TimeUtils.nanoTime(); 106 Matrix4.mulVec(mata.val, fvecs, 0, 500000, 3); 107 Gdx.app.log("MatrixJNITest", "jni bulk vecs * matrix took: " + (TimeUtils.nanoTime() - start) / 1000000000.0f); 108 109 start = TimeUtils.nanoTime(); 110 for (int i = 0; i < 1000000; i++) { 111 mata.inv(); 112 } 113 Gdx.app.log("MatrixJNITest", "java inv(matrix): " + (TimeUtils.nanoTime() - start) / 1000000000.0f); 114 115 start = TimeUtils.nanoTime(); 116 for (int i = 0; i < 1000000; i++) { 117 Matrix4.inv(mata.val); 118 } 119 Gdx.app.log("MatrixJNITest", "jni inv(matrix): " + (TimeUtils.nanoTime() - start) / 1000000000.0f); 120 } 121 check(Vector3 vec, float[] fvec)122 private void check (Vector3 vec, float[] fvec) { 123 if (vec.x != fvec[0] || vec.y != fvec[1] || vec.z != fvec[2]) throw new GdxRuntimeException("vectors are not equal"); 124 } 125 check(Vector3 vec, float[] fvec, int numVecs, int stride)126 private void check (Vector3 vec, float[] fvec, int numVecs, int stride) { 127 int offset = 0; 128 for (int i = 0; i < numVecs; i++) { 129 if (vec.x != fvec[0] || vec.y != fvec[1] || vec.z != fvec[2]) throw new GdxRuntimeException("vectors are not equal"); 130 } 131 } 132 check(Matrix4 mat1, Matrix4 mat2)133 private void check (Matrix4 mat1, Matrix4 mat2) { 134 for (int i = 0; i < 16; i++) { 135 if (mat1.val[i] != mat2.val[i]) throw new GdxRuntimeException("matrices not equal"); 136 } 137 } 138 } 139