- virtual bool needs_linear_light() { return false; }
- virtual bool needs_srgb_primaries() { return false; }
+ virtual bool needs_linear_light() const { return false; }
+ virtual bool needs_srgb_primaries() const { return false; }
+
+ // Actually processes its input in a nonlinear fashion,
+ // but does not touch alpha, and we are a special case anyway.
+ virtual AlphaHandling alpha_handling() const { return DONT_CARE_ALPHA_TYPE; }