+TEST(SliceEffectTest, HorizontalOverlapWithOffset) {
+ float data[5 * 2] = {
+ /* 0.0f, */ 0.0f, 0.1f, 0.2f, 0.3f, 0.4f,
+ /* 0.4f, */ 0.4f, 0.3f, 0.2f, 0.1f, 0.0f,
+ };
+ float expected_data[9 * 2] = {
+ 0.0f, 0.0f, 0.1f, 0.1f, 0.2f, 0.3f, 0.3f, 0.4f, 0.4f,
+ 0.4f, 0.4f, 0.3f, 0.3f, 0.2f, 0.1f, 0.1f, 0.0f, 0.0f,
+ };
+ float out_data[9 * 2];
+
+ EffectChainTester tester(NULL, 9, 2, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR);
+ tester.add_input(data, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR, 5, 2);
+
+ Effect *slice_effect = tester.get_chain()->add_effect(new SliceEffect());
+ ASSERT_TRUE(slice_effect->set_int("input_slice_size", 2));
+ ASSERT_TRUE(slice_effect->set_int("output_slice_size", 3));
+ ASSERT_TRUE(slice_effect->set_int("offset", -1));
+ ASSERT_TRUE(slice_effect->set_int("direction", SliceEffect::HORIZONTAL));
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+ expect_equal(expected_data, out_data, 9, 2);
+}
+
+TEST(SliceEffectTest, VerticalOverlapSlicesFromTop) {