X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=test_util.cpp;h=9d12a120f16cc8863defadf3151a0c2d30a4f653;hp=b377309638114057f2d99a56c852ee010bebb18f;hb=4f8b89618d6d09b4df811c4e2d7dcfa20815dcb3;hpb=9c6b86affb570a2e2d18c6da795c359da393f9a3

diff --git a/test_util.cpp b/test_util.cpp
index b377309..9d12a12 100644
--- a/test_util.cpp
+++ b/test_util.cpp
@@ -46,9 +46,8 @@ void vertical_flip(T *data, unsigned width, unsigned height)
 
 EffectChainTester::EffectChainTester(const float *data, unsigned width, unsigned height,
                                      MovitPixelFormat pixel_format, Colorspace color_space, GammaCurve gamma_curve,
-                                     GLenum framebuffer_format,
-                                     GLenum intermediate_format)
-	: chain(width, height, get_static_pool(), intermediate_format),
+                                     GLenum framebuffer_format)
+	: chain(width, height, get_static_pool()),
 	  width(width),
 	  height(height),
 	  framebuffer_format(framebuffer_format),
@@ -351,4 +350,24 @@ void test_accuracy(const float *expected, const float *result, unsigned num_valu
 	EXPECT_LT(rms, rms_limit);
 }
 
+double srgb_to_linear(double x)
+{
+	// From the Wikipedia article on sRGB.
+	if (x < 0.04045) {
+		return x / 12.92;
+	} else {
+		return pow((x + 0.055) / 1.055, 2.4);
+	}
+}
+
+double linear_to_srgb(double x)
+{
+	// From the Wikipedia article on sRGB.
+	if (x < 0.0031308) {
+		return 12.92 * x;
+	} else {
+		return 1.055 * pow(x, 1.0 / 2.4) - 0.055;
+	}
+}
+
 }  // namespace movit