Convert a loop to range-based for.
[movit] / lift_gamma_gain_effect_test.cpp
index 1be2847..f9163a8 100644 (file)
@@ -119,4 +119,31 @@ TEST(LiftGammaGainEffectTest, OutOfGamutColorsAreClipped) {
        expect_equal(expected_data, out_data, 4, 3);
 }
 
+TEST(LiftGammaGainEffectTest, NegativeLiftIsClamped) {
+       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, 0.0f , 0.0f, 1.0f,  // Note: Clamped below zero.
+               0.5f, 0.45f, 0.4f, 0.3f,
+               1.0f, 0.0f,  0.0f, 1.0f,  // Unaffected.
+               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_POSTMULTIPLIED_ALPHA, 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);
+}
+
 }  // namespace movit