diff options
Diffstat (limited to 'tests/gtests/blenlib/BLI_math_color_test.cc')
-rw-r--r-- | tests/gtests/blenlib/BLI_math_color_test.cc | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/tests/gtests/blenlib/BLI_math_color_test.cc b/tests/gtests/blenlib/BLI_math_color_test.cc new file mode 100644 index 00000000000..dd3b3f1add1 --- /dev/null +++ b/tests/gtests/blenlib/BLI_math_color_test.cc @@ -0,0 +1,88 @@ +#include "testing/testing.h" + +#include "BLI_math.h" + +TEST(mathutils, 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(mathutils, 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(mathutils, 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]); + yuv_to_rgb(yuv[0], yuv[1], yuv[2], + &rgb[0], &rgb[1], &rgb[2]); + EXPECT_V3_NEAR(orig_rgb, rgb, 1e-4); +} + +TEST(mathutils, 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(mathutils, LinearRGBTosRGBNearZero) +{ + float linear_color = 0.002f; + float srgb_color = linearrgb_to_srgb(linear_color); + EXPECT_NEAR(0.02584f, srgb_color, 1e-5); +} + +TEST(mathutils, LinearRGBTosRGB) +{ + float linear_color = 0.75f; + float srgb_color = linearrgb_to_srgb(linear_color); + EXPECT_NEAR(0.880824f, srgb_color, 1e-5); +} + +TEST(mathutils, 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); + } +} |