1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
/* SPDX-License-Identifier: Apache-2.0 */
#include "testing/testing.h"
#include "BLI_math.h"
TEST(math_color, RGBToHSVRoundtrip)
{
float orig_rgb[3] = {0.1f, 0.2f, 0.3f};
float hsv[3], rgb[3];
rgb_to_hsv_v(orig_rgb, hsv);
hsv_to_rgb_v(hsv, rgb);
EXPECT_V3_NEAR(orig_rgb, rgb, 1e-5);
}
TEST(math_color, RGBToHSLRoundtrip)
{
float orig_rgb[3] = {0.1f, 0.2f, 0.3f};
float hsl[3], rgb[3];
rgb_to_hsl_v(orig_rgb, hsl);
hsl_to_rgb_v(hsl, rgb);
EXPECT_V3_NEAR(orig_rgb, rgb, 1e-5);
}
TEST(math_color, RGBToYUVRoundtrip)
{
float orig_rgb[3] = {0.1f, 0.2f, 0.3f};
float yuv[3], rgb[3];
rgb_to_yuv(orig_rgb[0], orig_rgb[1], orig_rgb[2], &yuv[0], &yuv[1], &yuv[2], BLI_YUV_ITU_BT709);
yuv_to_rgb(yuv[0], yuv[1], yuv[2], &rgb[0], &rgb[1], &rgb[2], BLI_YUV_ITU_BT709);
EXPECT_V3_NEAR(orig_rgb, rgb, 1e-4);
}
TEST(math_color, RGBToYCCRoundtrip)
{
float orig_rgb[3] = {0.1f, 0.2f, 0.3f};
float ycc[3], rgb[3];
rgb_to_ycc(orig_rgb[0], orig_rgb[1], orig_rgb[2], &ycc[0], &ycc[1], &ycc[2], BLI_YCC_ITU_BT601);
ycc_to_rgb(ycc[0], ycc[1], ycc[2], &rgb[0], &rgb[1], &rgb[2], BLI_YCC_ITU_BT601);
EXPECT_V3_NEAR(orig_rgb, rgb, 1e-3);
rgb_to_ycc(orig_rgb[0], orig_rgb[1], orig_rgb[2], &ycc[0], &ycc[1], &ycc[2], BLI_YCC_ITU_BT709);
ycc_to_rgb(ycc[0], ycc[1], ycc[2], &rgb[0], &rgb[1], &rgb[2], BLI_YCC_ITU_BT709);
EXPECT_V3_NEAR(orig_rgb, rgb, 1e-3);
rgb_to_ycc(orig_rgb[0], orig_rgb[1], orig_rgb[2], &ycc[0], &ycc[1], &ycc[2], BLI_YCC_JFIF_0_255);
ycc_to_rgb(ycc[0], ycc[1], ycc[2], &rgb[0], &rgb[1], &rgb[2], BLI_YCC_JFIF_0_255);
EXPECT_V3_NEAR(orig_rgb, rgb, 1e-3);
}
TEST(math_color, LinearRGBTosRGBNearZero)
{
float linear_color = 0.002f;
float srgb_color = linearrgb_to_srgb(linear_color);
EXPECT_NEAR(0.02584f, srgb_color, 1e-5);
}
TEST(math_color, LinearRGBTosRGB)
{
float linear_color = 0.75f;
float srgb_color = linearrgb_to_srgb(linear_color);
EXPECT_NEAR(0.880824f, srgb_color, 1e-5);
}
TEST(math_color, LinearRGBTosRGBRoundtrip)
{
const int N = 50;
int i;
for (i = 0; i < N; ++i) {
float orig_linear_color = (float)i / N;
float srgb_color = linearrgb_to_srgb(orig_linear_color);
float linear_color = srgb_to_linearrgb(srgb_color);
EXPECT_NEAR(orig_linear_color, linear_color, 1e-5);
}
}
|
