[Bf-committers] Why did compositor change the existing behavior?

[IRIE Shinsuke]

Oops, the subject was incorrect...

12/05/24, IRIE Shinsuke wrote:
> Hi developers,
> 
> As I have reported 5 days ago, new compositor behaves in the different
> way from old compositor when converting a color into a scalar value:
> 
> http://projects.blender.org/tracker/index.php?func=detail&aid=31531&group_id=9&atid=498
> 
> That is, in the old compositor,
> 
>    output value = (R + G + B) / 3
> 
> or
> 
>    output value = R * 0.35 + G * 0.45 + B * 0.2
> 
> while in the new compositor,
> 
>    output value = (R + G + B) / 3 * A
> 
> or
> 
>    output value = (R * 0.35 + G * 0.45 + B * 0.2) * A
> 
> This change is very annoying that requires me to modify many existing
> .blend files.  So, I posted a patch that rolls back the behavior:
> 
> http://projects.blender.org/tracker/index.php?func=detail&aid=31534&group_id=9&atid=127
> 
> but still got no response.
> 
> Please let me know if this change accidentally happened or is intended
> and if I really have to modify my .blend files.
> 
> Regards,


-- 
IRIE Shinsuke