X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=saturation_effect_test.cpp;fp=saturation_effect_test.cpp;h=f6213c264bd966b7acf6175bcc74c58676a6cc5b;hp=0000000000000000000000000000000000000000;hb=2a6eec294c44a1de3693f227f26218b7c88ff0aa;hpb=2fdbe6e32ef5de09db9c890b6cd4355bf65dd1e5

diff --git a/saturation_effect_test.cpp b/saturation_effect_test.cpp
new file mode 100644
index 0000000..f6213c2
--- /dev/null
+++ b/saturation_effect_test.cpp
@@ -0,0 +1,64 @@
+// Unit tests for SaturationEffect.
+
+#include "test_util.h"
+#include "gtest/gtest.h"
+#include "saturation_effect.h"
+
+TEST(SaturationEffectTest, SaturationOneIsPassThrough) {
+	float data[] = {
+		1.0f, 0.5f, 0.75f, 0.6f,
+	};
+	float out_data[4];
+	EffectChainTester tester(data, 1, 1, FORMAT_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+	Effect *saturation_effect = tester.get_chain()->add_effect(new SaturationEffect());
+	ASSERT_TRUE(saturation_effect->set_float("saturation", 1.0f));
+	tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+	expect_equal(data, out_data, 1, 1);
+}
+
+TEST(SaturationEffectTest, SaturationZeroRemovesColorButPreservesAlpha) {
+	float data[] = {
+		0.0f, 0.0f, 0.0f, 1.0f,
+		0.5f, 0.5f, 0.5f, 0.3f,
+		1.0f, 0.0f, 0.0f, 1.0f,
+		0.0f, 1.0f, 0.0f, 0.7f,
+		0.0f, 0.0f, 1.0f, 1.0f,
+	};
+	float expected_data[] = {
+		0.0f, 0.0f, 0.0f, 1.0f,
+		0.5f, 0.5f, 0.5f, 0.3f,
+		0.2126f, 0.2126f, 0.2126f, 1.0f,
+		0.7152f, 0.7152f, 0.7152f, 0.7f,
+		0.0722f, 0.0722f, 0.0722f, 1.0f,
+	};
+
+	float out_data[5 * 4];
+	EffectChainTester tester(data, 5, 1, FORMAT_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+	Effect *saturation_effect = tester.get_chain()->add_effect(new SaturationEffect());
+	ASSERT_TRUE(saturation_effect->set_float("saturation", 0.0f));
+	tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+	expect_equal(expected_data, out_data, 4, 5);
+}
+
+TEST(SaturationEffectTest, DoubleSaturation) {
+	float data[] = {
+		0.0f, 0.0f, 0.0f, 1.0f,
+		0.5f, 0.5f, 0.5f, 0.3f,
+		0.3f, 0.1f, 0.1f, 1.0f,
+	};
+	float expected_data[] = {
+		0.0f, 0.0f, 0.0f, 1.0f,
+		0.5f, 0.5f, 0.5f, 0.3f,
+		0.4570f, 0.0575f, 0.0575f, 1.0f,
+	};
+
+	float out_data[3 * 4];
+	EffectChainTester tester(data, 5, 1, FORMAT_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+	Effect *saturation_effect = tester.get_chain()->add_effect(new SaturationEffect());
+	ASSERT_TRUE(saturation_effect->set_float("saturation", 2.0f));
+	tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+	expect_equal(expected_data, out_data, 4, 3);
+}