test_ssf_pillbox_distribution.c (2582B)
1 /* Copyright (C) 2016-2018, 2021-2025 |Méso|Star> (contact@meso-star.com) 2 * 3 * This program is free software: you can redistribute it and/or modify 4 * it under the terms of the GNU General Public License as published by 5 * the Free Software Foundation, either version 3 of the License, or 6 * (at your option) any later version. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. */ 15 16 #define _POSIX_C_SOURCE 200112L /* nextafter support */ 17 18 #include "ssf.h" 19 #include "test_ssf_utils.h" 20 21 #include <math.h> 22 23 int 24 main(int argc, char** argv) 25 { 26 struct mem_allocator allocator; 27 struct ssp_rng* rng; 28 struct ssf_microfacet_distribution* distrib; 29 struct ssf_microfacet_distribution* dummy; 30 const size_t NTESTS = 10; 31 size_t itest; 32 (void)argc, (void)argv; 33 34 mem_init_proxy_allocator(&allocator, &mem_default_allocator); 35 CHK(ssp_rng_create(&allocator, SSP_RNG_THREEFRY, &rng) == RES_OK); 36 37 CHK(ssf_microfacet_distribution_create 38 (&allocator, &ssf_pillbox_distribution, &distrib) == RES_OK); 39 CHK(ssf_microfacet_distribution_create 40 (&allocator, µfacet_dummy, &dummy) == RES_OK); 41 42 CHK(ssf_pillbox_distribution_setup(NULL, -1) == RES_BAD_ARG); 43 CHK(ssf_pillbox_distribution_setup(distrib, -1) == RES_BAD_ARG); 44 CHK(ssf_pillbox_distribution_setup(NULL, 0.5) == RES_BAD_ARG); 45 CHK(ssf_pillbox_distribution_setup(distrib, 0.5) == RES_OK); 46 CHK(ssf_pillbox_distribution_setup(dummy, 0.5) == RES_BAD_ARG); 47 48 CHK(ssf_pillbox_distribution_setup(distrib, 1) == RES_OK); 49 CHK(ssf_pillbox_distribution_setup(distrib, nextafter(0, 1)) == RES_OK); 50 CHK(ssf_pillbox_distribution_setup(distrib, nextafter(1, 2)) == RES_BAD_ARG); 51 CHK(ssf_pillbox_distribution_setup(distrib, 0) == RES_BAD_ARG); 52 53 FOR_EACH(itest, 0, NTESTS) { 54 const double roughness = nextafter(ssp_rng_canonical(rng), 2); /*in ]0, 1]*/ 55 CHK(ssf_pillbox_distribution_setup(distrib, roughness) == RES_OK); 56 check_microfacet_distribution(distrib, rng); 57 } 58 59 CHK(ssf_microfacet_distribution_ref_put(distrib) == RES_OK); 60 CHK(ssf_microfacet_distribution_ref_put(dummy) == RES_OK); 61 CHK(ssp_rng_ref_put(rng) == RES_OK); 62 63 check_memory_allocator(&allocator); 64 mem_shutdown_proxy_allocator(&allocator); 65 CHK(mem_allocated_size() == 0); 66 return 0; 67 } 68