Issue with overlay blending modes

[oomek]

I'm sorry for digging out that old thread but this is the only thread I could find which mentioned an overlay blending mode in SFML. I use:

Code: [Select]

BlendMode(sf::BlendMode::DstColor, sf::BlendMode::SrcColor).
This works great, but the problem I'm having is that I have no way of controling the opacity of the effect, I've tried also:

Code: [Select]

BlendMode(sf::BlendMode::DstColor, sf::BlendMode::SrcColor, sf::BlendMode::Add, sf::BlendMode::SrcAlpha, sf::BlendMode::Zero, sf::BlendMode::Add);
But this seem not to work either. Is there any other way I could try to control the opacity in that mode?

[eXpl0it3r]

I have split your post into its own topic, as it had nothing to do with the original thread.
Please don't post in topics that are 8 years old and don't have anything to do with your post, except for mentioning some detail.

So, how about you explain first, what your final goal is. Maybe someone will know a better solution or maybe a shader would work better.

[ZeroZ30o]

If you are talking about the overlay blend mode:

http://blog.datacolor.com/wp-content/uploads/2014/03/Duggan_BlendModes_09.jpg

Then a shader is more suited for it:

https://wikimedia.org/api/rest_v1/media/math/render/svg/e8efed48f28a3e91bd98601d16661f92216305ca
Source: https://en.wikipedia.org/wiki/Blend_modes

Also, this shouldn't be in "feature request".