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77 lines
2.2 KiB
77 lines
2.2 KiB
/* Apache License, Version 2.0 */
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#include "testing/testing.h"
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#include "BLI_math.h"
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TEST(math_color, RGBToHSVRoundtrip)
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{
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float orig_rgb[3] = {0.1f, 0.2f, 0.3f};
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float hsv[3], rgb[3];
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rgb_to_hsv_v(orig_rgb, hsv);
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hsv_to_rgb_v(hsv, rgb);
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EXPECT_V3_NEAR(orig_rgb, rgb, 1e-5);
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}
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TEST(math_color, RGBToHSLRoundtrip)
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{
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float orig_rgb[3] = {0.1f, 0.2f, 0.3f};
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float hsl[3], rgb[3];
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rgb_to_hsl_v(orig_rgb, hsl);
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hsl_to_rgb_v(hsl, rgb);
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EXPECT_V3_NEAR(orig_rgb, rgb, 1e-5);
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}
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TEST(math_color, RGBToYUVRoundtrip)
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{
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float orig_rgb[3] = {0.1f, 0.2f, 0.3f};
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float yuv[3], rgb[3];
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rgb_to_yuv(orig_rgb[0], orig_rgb[1], orig_rgb[2], &yuv[0], &yuv[1], &yuv[2], BLI_YUV_ITU_BT709);
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yuv_to_rgb(yuv[0], yuv[1], yuv[2], &rgb[0], &rgb[1], &rgb[2], BLI_YUV_ITU_BT709);
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EXPECT_V3_NEAR(orig_rgb, rgb, 1e-4);
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}
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TEST(math_color, RGBToYCCRoundtrip)
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{
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float orig_rgb[3] = {0.1f, 0.2f, 0.3f};
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float ycc[3], rgb[3];
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rgb_to_ycc(orig_rgb[0], orig_rgb[1], orig_rgb[2], &ycc[0], &ycc[1], &ycc[2], BLI_YCC_ITU_BT601);
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ycc_to_rgb(ycc[0], ycc[1], ycc[2], &rgb[0], &rgb[1], &rgb[2], BLI_YCC_ITU_BT601);
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EXPECT_V3_NEAR(orig_rgb, rgb, 1e-3);
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rgb_to_ycc(orig_rgb[0], orig_rgb[1], orig_rgb[2], &ycc[0], &ycc[1], &ycc[2], BLI_YCC_ITU_BT709);
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ycc_to_rgb(ycc[0], ycc[1], ycc[2], &rgb[0], &rgb[1], &rgb[2], BLI_YCC_ITU_BT709);
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EXPECT_V3_NEAR(orig_rgb, rgb, 1e-3);
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rgb_to_ycc(orig_rgb[0], orig_rgb[1], orig_rgb[2], &ycc[0], &ycc[1], &ycc[2], BLI_YCC_JFIF_0_255);
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ycc_to_rgb(ycc[0], ycc[1], ycc[2], &rgb[0], &rgb[1], &rgb[2], BLI_YCC_JFIF_0_255);
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EXPECT_V3_NEAR(orig_rgb, rgb, 1e-3);
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}
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TEST(math_color, LinearRGBTosRGBNearZero)
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{
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float linear_color = 0.002f;
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float srgb_color = linearrgb_to_srgb(linear_color);
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EXPECT_NEAR(0.02584f, srgb_color, 1e-5);
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}
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TEST(math_color, LinearRGBTosRGB)
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{
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float linear_color = 0.75f;
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float srgb_color = linearrgb_to_srgb(linear_color);
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EXPECT_NEAR(0.880824f, srgb_color, 1e-5);
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}
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TEST(math_color, LinearRGBTosRGBRoundtrip)
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{
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const int N = 50;
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int i;
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for (i = 0; i < N; ++i) {
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float orig_linear_color = (float)i / N;
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float srgb_color = linearrgb_to_srgb(orig_linear_color);
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float linear_color = srgb_to_linearrgb(srgb_color);
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EXPECT_NEAR(orig_linear_color, linear_color, 1e-5);
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}
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}
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