X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=colorspace_conversion_effect.h;h=e3c60ea81730af2a2eaaffe0370e23b3a71cf35c;hp=3b21804cac103f56b2d71eaecc7ae93139266b3f;hb=fe785e6f62ab58ef05972850d9275005794505b7;hpb=17c083aad45a10df14c38cfe879a87220dfd4fb9

diff --git a/colorspace_conversion_effect.h b/colorspace_conversion_effect.h
index 3b21804..e3c60ea 100644
--- a/colorspace_conversion_effect.h
+++ b/colorspace_conversion_effect.h
@@ -1,6 +1,13 @@
 #ifndef _COLORSPACE_CONVERSION_EFFECT_H
 #define _COLORSPACE_CONVERSION_EFFECT_H 1
 
+// An effect to convert between different color spaces.
+// Can convert freely between sRGB/Rec. 709 and the two different Rec. 601
+// color spaces (which thankfully have the same white point).
+//
+// We don't do any fancy gamut mapping or similar; colors that are out-of-gamut
+// will simply stay out-of-gamut, and probably clip in the output stage.
+
 #include "effect.h"
 #include "effect_chain.h"
 
@@ -9,7 +16,7 @@ public:
 	ColorSpaceConversionEffect();
 	std::string output_fragment_shader();
 
-	virtual bool needs_srgb_primaries() { return false; }
+	virtual bool needs_srgb_primaries() const { return false; }
 
 private:
 	ColorSpace source_space, destination_space;