Support Blending Modes

[mmaciola]

Patch introduces blending options such as Normal, Screen, Multiply, Overlay,
Darken, Lighten, ColorDodge, ColorBurn, HardLight, SoftLight, Difference,
Exclusion, Hue, Saturation, Color, Luminosity

[projectitis]

Hi @mmaciola - this work looks great!
What is the status of this patch? Are all blending modes working?
Do you know why it has not been accepted into thorvg?

[mmaciola]

Hi @projectitis the patch wasn't merged as there were some more critical issues that was being fixed that time.
Do you have a need for blending modes in your project? If yes, we could back to this patch when some free time available.
There were programmed Normal, Screen, Multiply, Overlay, Darken, Lighten, ColorDodge, ColorBurn, HardLight, SoftLight, Difference and Exclusion blending modes.

[projectitis]

@mmaciola That would be amazing :) I am working on the rive_tizen renderer. It requires blend mode support. I can see some incorrect example rive files because some shapes need Overlay or Hard Light, for example.