[942] | 1 | // |
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| 2 | // Lol Engine - Benchmark program |
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| 3 | // |
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| 4 | // Copyright: (c) 2005-2011 Sam Hocevar <sam@hocevar.net> |
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| 5 | // This program is free software; you can redistribute it and/or |
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| 6 | // modify it under the terms of the Do What The Fuck You Want To |
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| 7 | // Public License, Version 2, as published by Sam Hocevar. See |
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| 8 | // http://sam.zoy.org/projects/COPYING.WTFPL for more details. |
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| 9 | // |
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| 10 | |
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| 11 | #if defined HAVE_CONFIG_H |
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| 12 | # include "config.h" |
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| 13 | #endif |
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| 14 | |
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| 15 | #include <cstdio> |
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| 16 | |
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| 17 | #include "core.h" |
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| 18 | |
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| 19 | using namespace std; |
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| 20 | using namespace lol; |
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| 21 | |
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| 22 | static size_t const MATRIX_TABLE_SIZE = 64 * 1024; |
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| 23 | static size_t const MATRIX_RUNS = 100; |
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| 24 | |
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| 25 | void bench_matrix(int mode) |
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| 26 | { |
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| 27 | float result[5] = { 0.0f }; |
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| 28 | Timer timer; |
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| 29 | |
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| 30 | /* Set up tables */ |
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| 31 | mat4 *pm = new mat4[MATRIX_TABLE_SIZE + 1]; |
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| 32 | float *pf = new float[MATRIX_TABLE_SIZE]; |
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| 33 | |
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| 34 | for (size_t run = 0; run < MATRIX_RUNS; run++) |
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| 35 | { |
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| 36 | switch (mode) |
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| 37 | { |
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| 38 | case 1: |
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| 39 | for (size_t i = 0; i < MATRIX_TABLE_SIZE; i++) |
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| 40 | for (int j = 0; j < 4; j++) |
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| 41 | for (int k = 0; k < 4; k++) |
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| 42 | pm[i][j][k] = RandF(-2.0f, 2.0f); |
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| 43 | break; |
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| 44 | } |
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| 45 | |
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| 46 | /* Copy matrices */ |
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| 47 | timer.GetMs(); |
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| 48 | for (size_t i = 0; i < MATRIX_TABLE_SIZE; i++) |
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| 49 | pm[i] = pm[i + 1]; |
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| 50 | result[0] += timer.GetMs(); |
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| 51 | |
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| 52 | /* Determinant */ |
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| 53 | timer.GetMs(); |
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| 54 | for (size_t i = 0; i < MATRIX_TABLE_SIZE; i++) |
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| 55 | pf[i] = pm[i].det(); |
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| 56 | result[1] += timer.GetMs(); |
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| 57 | |
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| 58 | /* Multiply matrices */ |
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| 59 | timer.GetMs(); |
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| 60 | for (size_t i = 0; i < MATRIX_TABLE_SIZE; i++) |
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| 61 | pm[i] *= pm[i + 1]; |
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| 62 | result[2] += timer.GetMs(); |
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| 63 | |
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| 64 | /* Add matrices */ |
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| 65 | timer.GetMs(); |
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| 66 | for (size_t i = 0; i < MATRIX_TABLE_SIZE; i++) |
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| 67 | pm[i] += pm[i + 1]; |
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| 68 | result[3] += timer.GetMs(); |
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| 69 | |
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| 70 | /* Invert matrix */ |
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| 71 | timer.GetMs(); |
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| 72 | for (size_t i = 0; i < MATRIX_TABLE_SIZE; i++) |
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| 73 | pm[i] = pm[i].invert(); |
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| 74 | result[4] += timer.GetMs(); |
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| 75 | } |
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| 76 | |
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| 77 | delete[] pm; |
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| 78 | delete[] pf; |
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| 79 | |
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| 80 | for (size_t i = 0; i < sizeof(result) / sizeof(*result); i++) |
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| 81 | result[i] *= 1000000.0f / (MATRIX_TABLE_SIZE * MATRIX_RUNS); |
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| 82 | |
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| 83 | Log::Info(" ns/elem\n"); |
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| 84 | Log::Info("mat4 = mat4 %7.3f\n", result[0]); |
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| 85 | Log::Info("float = mat4.det() %7.3f\n", result[1]); |
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| 86 | Log::Info("mat4 *= mat4 %7.3f\n", result[2]); |
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| 87 | Log::Info("mat4 += mat4 %7.3f\n", result[3]); |
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| 88 | Log::Info("mat4 = mat4.invert() %7.3f\n", result[4]); |
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| 89 | } |
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| 90 | |
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