X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=luma_mix_effect_test.cpp;fp=luma_mix_effect_test.cpp;h=4a506f5aaf4942d631aba27c4b18d99f3089d16f;hp=0000000000000000000000000000000000000000;hb=97f04cf3de39851ba0808aace31866afa9a9f500;hpb=dc03e3b0a5b0bbe8c6cdf5da9bc72376f79857b4

diff --git a/luma_mix_effect_test.cpp b/luma_mix_effect_test.cpp
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+++ b/luma_mix_effect_test.cpp
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+// Unit tests for LumaMixEffect.
+
+#include <epoxy/gl.h>
+
+#include "effect_chain.h"
+#include "gtest/gtest.h"
+#include "image_format.h"
+#include "input.h"
+#include "luma_mix_effect.h"
+#include "test_util.h"
+
+namespace movit {
+
+TEST(LumaMixEffectTest, HardWipe) {
+	float data_a[] = {
+		0.0f, 0.25f,
+		0.75f, 1.0f,
+	};
+	float data_b[] = {
+		1.0f, 0.5f,
+		0.65f, 0.6f,
+	};
+	float data_luma[] = {
+		0.0f, 0.25f,
+		0.5f, 0.75f,
+	};
+
+	EffectChainTester tester(data_a, 2, 2, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR);
+	Effect *input1 = tester.get_chain()->last_added_effect();
+	Effect *input2 = tester.add_input(data_b, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR);
+	Effect *input3 = tester.add_input(data_luma, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+	Effect *luma_mix_effect = tester.get_chain()->add_effect(new LumaMixEffect(), input1, input2, input3);
+	ASSERT_TRUE(luma_mix_effect->set_float("transition_width", 100000.0f));
+
+	float out_data[4];
+	ASSERT_TRUE(luma_mix_effect->set_float("progress", 0.0f));
+	tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+	expect_equal(data_a, out_data, 2, 2);
+
+	// Lower right from B, the rest from A.
+	float expected_data_049[] = {
+		0.0f, 0.25f,
+		0.75f, 0.6f,
+	};
+	ASSERT_TRUE(luma_mix_effect->set_float("progress", 0.49f));
+	tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+	expect_equal(expected_data_049, out_data, 2, 2);
+
+	// Lower two from B, the rest from A.
+	float expected_data_051[] = {
+		0.0f, 0.25f,
+		0.65f, 0.6f,
+	};
+	ASSERT_TRUE(luma_mix_effect->set_float("progress", 0.51f));
+	tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+	expect_equal(expected_data_051, out_data, 2, 2);
+
+	ASSERT_TRUE(luma_mix_effect->set_float("progress", 1.0f));
+	tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+	expect_equal(data_b, out_data, 2, 2);
+}
+
+TEST(LumaMixEffectTest, SoftWipeHalfWayThrough) {
+	float data_a[] = {
+		0.0f, 0.25f,
+		0.75f, 1.0f,
+	};
+	float data_b[] = {
+		1.0f, 0.5f,
+		0.65f, 0.6f,
+	};
+	float data_luma[] = {
+		0.0f, 0.25f,
+		0.5f, 0.75f,
+	};
+	// At this point, the luma range and the mix range should exactly line up,
+	// so we get a straight-up fade by luma.
+	float expected_data[] = {
+		data_a[0] + (data_b[0] - data_a[0]) * data_luma[0],
+		data_a[1] + (data_b[1] - data_a[1]) * data_luma[1],
+		data_a[2] + (data_b[2] - data_a[2]) * data_luma[2],
+		data_a[3] + (data_b[3] - data_a[3]) * data_luma[3],
+	};
+	float out_data[4];
+
+	EffectChainTester tester(data_a, 2, 2, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR);
+	Effect *input1 = tester.get_chain()->last_added_effect();
+	Effect *input2 = tester.add_input(data_b, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR);
+	Effect *input3 = tester.add_input(data_luma, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+	Effect *luma_mix_effect = tester.get_chain()->add_effect(new LumaMixEffect(), input1, input2, input3);
+	ASSERT_TRUE(luma_mix_effect->set_float("transition_width", 1.0f));
+	ASSERT_TRUE(luma_mix_effect->set_float("progress", 0.5f));
+	tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+	expect_equal(expected_data, out_data, 2, 2);
+}
+
+}  // namespace movit