X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=gamma_expansion_effect_test.cpp;fp=gamma_expansion_effect_test.cpp;h=71544b4738c1a92caa827d1d5c7e90d3a7941ca3;hp=ed124c4f31c7a9d750c91bcf4269e4398fd7839c;hb=36ae69017f10987948009bf6f602da5f94e4f780;hpb=9c6e299e39c5ce057739da823620c06e8f4230f3

diff --git a/gamma_expansion_effect_test.cpp b/gamma_expansion_effect_test.cpp
index ed124c4..71544b4 100644
--- a/gamma_expansion_effect_test.cpp
+++ b/gamma_expansion_effect_test.cpp
@@ -34,6 +34,21 @@ TEST(GammaExpansionEffectTest, sRGB_RampAlwaysIncreases) {
 	}
 }
 
+TEST(GammaExpansionEffectTest, sRGB_AlphaIsUnchanged) {
+	float data[] = {
+		0.0f, 0.0f, 0.0f, 0.0f,
+		0.0f, 0.0f, 0.0f, 0.25f,
+		0.0f, 0.0f, 0.0f, 0.5f,
+		0.0f, 0.0f, 0.0f, 0.75f,
+		0.0f, 0.0f, 0.0f, 1.0f,
+	};
+	float out_data[5 * 4];
+	EffectChainTester tester(data, 5, 1, FORMAT_RGBA, COLORSPACE_sRGB, GAMMA_sRGB);
+	tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+	expect_equal(data, out_data, 5, 1);
+}
+
 TEST(GammaExpansionEffectTest, Rec709_KeyValues) {
 	float data[] = {
 		0.0f, 1.0f,
@@ -63,3 +78,18 @@ TEST(GammaExpansionEffectTest, Rec709_RampAlwaysIncreases) {
 		   << "No increase between " << i-1 << " and " << i;
 	}
 }
+
+TEST(GammaExpansionEffectTest, Rec709_AlphaIsUnchanged) {
+	float data[] = {
+		0.0f, 0.0f, 0.0f, 0.0f,
+		0.0f, 0.0f, 0.0f, 0.25f,
+		0.0f, 0.0f, 0.0f, 0.5f,
+		0.0f, 0.0f, 0.0f, 0.75f,
+		0.0f, 0.0f, 0.0f, 1.0f,
+	};
+	float out_data[5 * 4];
+	EffectChainTester tester(data, 5, 1, FORMAT_RGBA, COLORSPACE_sRGB, GAMMA_REC_709);
+	tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+	expect_equal(data, out_data, 5, 1);
+}