X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=flat_input_test.cpp;h=c8df483cee4fbcbce121c3ccaa69eac058136f47;hp=17ee9ce49f407abefc9206df05e1e69559f73c2f;hb=5c97329dd35909847e2120b0b368b2723ffe5a44;hpb=b16d7433b249c5381fa137d3ac3ef7867ae2eae4

diff --git a/flat_input_test.cpp b/flat_input_test.cpp
index 17ee9ce..c8df483 100644
--- a/flat_input_test.cpp
+++ b/flat_input_test.cpp
@@ -1,8 +1,11 @@
 // Unit tests for FlatInput.
 
-#include "test_util.h"
-#include "gtest/gtest.h"
+#include <stddef.h>
+
+#include "effect_chain.h"
 #include "flat_input.h"
+#include "gtest/gtest.h"
+#include "test_util.h"
 
 TEST(FlatInput, SimpleGrayscale) {
 	const int size = 4;
@@ -71,7 +74,38 @@ TEST(FlatInput, RGBA) {
 	};
 	float out_data[4 * size];
 
-	EffectChainTester tester(data, 1, size, FORMAT_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+	EffectChainTester tester(data, 1, size, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, COLORSPACE_sRGB, GAMMA_LINEAR);
+	tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
+
+	expect_equal(expected_data, out_data, 4, size);
+}
+
+// Note: The sRGB conversion itself is tested in EffectChainTester,
+// since it also wants to test the chain building itself.
+// Here, we merely test that alpha is left alone; the test will usually
+// run using the sRGB OpenGL extension, but might be run with a
+// GammaExpansionEffect if the card/driver happens not to support that.
+TEST(FlatInput, AlphaIsNotModifiedBySRGBConversion) {
+	const int size = 5;
+
+	unsigned char data[4 * size] = {
+		0, 0, 0, 0,
+		0, 0, 0, 63,
+		0, 0, 0, 127,
+		0, 0, 0, 191,
+		0, 0, 0, 255,
+	};
+	float expected_data[4 * size] = {
+		0, 0, 0, 0.0 / 255.0,
+		0, 0, 0, 63.0 / 255.0,
+		0, 0, 0, 127.0 / 255.0,
+		0, 0, 0, 191.0 / 255.0,
+		0, 0, 0, 255.0 / 255.0,
+	};
+	float out_data[4 * size];
+
+        EffectChainTester tester(NULL, 1, size);
+        tester.add_input(data, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, COLORSPACE_sRGB, GAMMA_sRGB);
 	tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
 
 	expect_equal(expected_data, out_data, 4, size);
@@ -121,7 +155,7 @@ TEST(FlatInput, BGRA) {
 	};
 	float out_data[4 * size];
 
-	EffectChainTester tester(data, 1, size, FORMAT_BGRA, COLORSPACE_sRGB, GAMMA_LINEAR);
+	EffectChainTester tester(data, 1, size, FORMAT_BGRA_POSTMULTIPLIED_ALPHA, COLORSPACE_sRGB, GAMMA_LINEAR);
 	tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_LINEAR);
 
 	expect_equal(expected_data, out_data, 4, size);