Add some sRGB conversion functions to test_util.{h,cpp}.

[movit] / gamma_compression_effect_test.cpp

diff --git a/gamma_compression_effect_test.cpp b/gamma_compression_effect_test.cpp
index 1c8768096b6485d5b6d260ae13ca0e49235dd967..db2023457142411415a4a2ad5aa57916458a774b 100644 (file)
--- a/gamma_compression_effect_test.cpp
+++ b/gamma_compression_effect_test.cpp
@@ -54,13 +54,7 @@ TEST(GammaCompressionEffectTest, sRGB_Accuracy) {
                double x = i / 255.0;
 
                expected_data[i] = x;
-
-               // From the Wikipedia article on sRGB.
-               if (x < 0.04045) {
-                       data[i] = x / 12.92;
-               } else {
-                       data[i] = pow((x + 0.055) / 1.055, 2.4);
-               }
+               data[i] = srgb_to_linear(x);
        }
 
        EffectChainTester tester(data, 256, 1, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR, GL_RGBA32F);