Merge branch 'master' into epoxy

[movit] / luma_mix_effect_test.cpp

diff --git a/luma_mix_effect_test.cpp b/luma_mix_effect_test.cpp
new file mode 100644 (file)
index 0000000..4a506f5
--- /dev/null
+++ b/luma_mix_effect_test.cpp
@@ -0,0 +1,99 @@
+// 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