virtual bool needs_srgb_primaries() const { return false; }
virtual unsigned num_inputs() const { return 2; }
+
+ // Actually, if either image has blank alpha, our output will have
+ // blank alpha, too. However, understanding that would require changes
+ // to EffectChain, so postpone that optimization for later.
+ virtual AlphaHandling alpha_handling() const { return INPUT_AND_OUTPUT_ALPHA_PREMULTIPLIED; }
};
#endif // !defined(_OVERLAY_EFFECT_H)