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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);
}
TEST(LumaMixEffectTest, Inverse) {
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));
ASSERT_TRUE(luma_mix_effect->set_int("inverse", 1));
// Inverse is not the same as reverse, so progress=0 should behave identically
// as HardWipe, ie. everything should be from A.
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 two from A, the rest from B.
float expected_data_049[] = {
1.0f, 0.5f,
0.75f, 1.0f,
};
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);
}
} // namespace movit
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