1 /*
2 * Copyright (C) 2022 Alyssa Rosenzweig
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 */
23
24 #include "agx_pack.h"
25
26 #include <gtest/gtest.h>
27
28 const struct {
29 float f;
30 uint16_t encoded;
31 bool inexact;
32 } lod_cases[] = {
33 /* Lower bound clamp */
34 { -INFINITY, 0x00, true },
35 { -0.1, 0x00, true },
36 { -0.0, 0x00, true },
37
38 /* Exact bounds */
39 { 0.0, 0x00 },
40 { 14.0, 0x380 },
41
42 /* Upper bound clamp */
43 { 14.1, 0x380, true },
44 { 18.1, 0x380, true },
45 { INFINITY, 0x380, true },
46 };
47
48 class LODClamp : public testing::Test {
49 };
50
TEST_F(LODClamp, Encode)51 TEST_F(LODClamp, Encode)
52 {
53 for (unsigned i = 0; i < ARRAY_SIZE(lod_cases); ++i)
54 ASSERT_EQ(__float_to_lod(lod_cases[i].f), lod_cases[i].encoded);
55 }
56
TEST_F(LODClamp, Decode)57 TEST_F(LODClamp, Decode)
58 {
59 for (unsigned i = 0; i < ARRAY_SIZE(lod_cases); ++i) {
60 if (lod_cases[i].inexact)
61 continue;
62
63 uint8_t cl[4] = { 0 };
64 memcpy(cl, &lod_cases[i].encoded, sizeof(lod_cases[i].encoded));
65
66 ASSERT_EQ(__gen_unpack_lod(cl, 0, 10), lod_cases[i].f);
67 }
68 }
69