X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=lift_gamma_gain_effect_test.cpp;fp=lift_gamma_gain_effect_test.cpp;h=00c96ca6b33efdcef06e8c000bfe0e422dda22db;hp=0000000000000000000000000000000000000000;hb=6b890b1591c0f6f67c8ec223b32a8cfae11ba874;hpb=2c9711e213679e11bea1b0e86bb46af442b22ee0

diff --git a/lift_gamma_gain_effect_test.cpp b/lift_gamma_gain_effect_test.cpp
new file mode 100644
index 0000000..00c96ca
--- /dev/null
+++ b/lift_gamma_gain_effect_test.cpp
@@ -0,0 +1,94 @@
+// Unit tests for LiftGammaGainEffect.
+
+#include "test_util.h"
+#include "gtest/gtest.h"
+#include "lift_gamma_gain_effect.h"
+
+TEST(LiftGammaGainEffectTest, DefaultIsNoop) {
+	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 out_data[5 * 4];
+	EffectChainTester tester(data, 1, 5, FORMAT_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+	tester.get_chain()->add_effect(new LiftGammaGainEffect());
+	tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+	expect_equal(data, out_data, 4, 5);
+}
+
+TEST(LiftGammaGainEffectTest, Gain) {
+	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 gain[3] = { 0.8f, 1.0f, 1.2f };
+	float expected_data[] = {
+		0.0f, 0.0f, 0.0f, 1.0f,
+		0.4f, 0.5f, 0.6f, 0.3f,
+		0.8f, 0.0f, 0.0f, 1.0f,
+		0.0f, 1.0f, 0.0f, 0.7f,
+		0.0f, 0.0f, 1.2f, 1.0f,
+	};
+
+	float out_data[5 * 4];
+	EffectChainTester tester(data, 1, 5, FORMAT_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+	Effect *lgg_effect = tester.get_chain()->add_effect(new LiftGammaGainEffect());
+	ASSERT_TRUE(lgg_effect->set_vec3("gain", gain));
+	tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+	expect_equal(expected_data, out_data, 4, 5);
+}
+
+TEST(LiftGammaGainEffectTest, LiftIsDoneInApproximatelysRGB) {
+	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 lift[3] = { 0.0f, 0.1f, 0.2f };
+	float expected_data[] = {
+		0.0f, 0.1f , 0.2f, 1.0f,
+		0.5f, 0.55f, 0.6f, 0.3f,
+		1.0f, 0.1f,  0.2f, 1.0f,
+		0.0f, 1.0f,  0.2f, 0.7f,
+		0.0f, 0.1f,  1.0f, 1.0f,
+	};
+
+	float out_data[5 * 4];
+	EffectChainTester tester(data, 1, 5, FORMAT_RGBA, COLORSPACE_sRGB, GAMMA_sRGB);
+	Effect *lgg_effect = tester.get_chain()->add_effect(new LiftGammaGainEffect());
+	ASSERT_TRUE(lgg_effect->set_vec3("lift", lift));
+	tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_sRGB);
+
+	// sRGB is only approximately gamma-2.2, so loosen up the limits a bit.
+	expect_equal(expected_data, out_data, 4, 5, 0.03, 0.003);
+}
+
+TEST(LiftGammaGainEffectTest, Gamma22IsApproximatelysRGB) {
+	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 gamma[3] = { 2.2f, 2.2f, 2.2f };
+
+	float out_data[5 * 4];
+	EffectChainTester tester(data, 1, 5, FORMAT_RGBA, COLORSPACE_sRGB, GAMMA_sRGB);
+	Effect *lgg_effect = tester.get_chain()->add_effect(new LiftGammaGainEffect());
+	ASSERT_TRUE(lgg_effect->set_vec3("gamma", gamma));
+	tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+	expect_equal(data, out_data, 4, 5);
+}