Filter Forge - Bug: "If" component wrong alpha output

Active Topics Search

Sphinx. Filter Optimizer Posts: 1344 Filters: 38	The "If" component uses the "Then" alpha in its output and not the alpha from Source A (as described in help and in general being the convention for RGB Math components) Njyldgarkn sample cache!
	Posted: October 4, 2011 5:15 am	Details E-Mail
Vladimir Golovin Administrator Filter Forge, Inc. Posts: 3106 Filters: 54	The guys are looking into this.
	Posted: October 17, 2011 9:27 am	Details E-Mail
Sphinx. Filter Optimizer Posts: 1344 Filters: 38	Nice! One thing that would be mighty cool is that if you could avoid fetching THEN or ELSE sources unless needed.. it seems that all sources are fetched no matter what (estimated from performance..correct me if I'm wrong). Njyldgarkn sample cache!
	Posted: October 17, 2011 9:40 am	Details E-Mail
Dmitry Sapelnikov Filter Forge, Inc. AKA Egret Posts: 76 Filters: 5	Yes, the help article contains a mistake. The If component doesn't follow the convention mentioned above. Instead it takes the alpha from the Then/Else inputs comparing the SourceA and SourceB alphas. Thus the component supports uniform processing of all 4 channels.
	Posted: October 20, 2011 6:41 am	Details E-Mail
Sphinx. Filter Optimizer Posts: 1344 Filters: 38	Mmm.. this is not very handy cachewise - all four/three (?) sources are always fetched , making this component worthless as a subtree selection mechanism (but we have the Threshold component for that I guess..). I had hoped that when introduced the If comp. would allow an even cheaper subtree selection mechanism than the Threshold (because it involves unnecessary interpolation) - but its nature makes it impractical... But hey frak it! How about making RGB Math components consistent once for all: RGBA is processed equally. Njyldgarkn sample cache!
	Posted: October 20, 2011 4:05 pm	Details E-Mail

Join Our Community!

Filter Forge has a thriving, vibrant, knowledgeable user community. Feel free to join us and have fun!

15,411 Registered Users
+10 new last day!

112,695 Posts
+21 new last day!

10,110 Topics
+8 new in 7 days!

Create an Account

Online Users Last minute:

5 unregistered users.

Recent Forum Posts:

Other Interesting Ideas by ronjonnie
15 minutes ago
Random Variation by Bocote
2 hours ago
Good News! New FF 4.004 and ENABLES submission of filters to library! by CFandM
11 hours ago
Gold Rust by PrincessToxico by iFredQC
11 hours ago
Memory error message by Bionic
12 hours ago
Batch Rendering Wrapper by SpaceRay
yesterday
Beta Gallery by SpaceRay
yesterday
mw_Petri Dishes & Liches by marwyn by Dave S
yesterday
FF 4 beta by Apophis
yesterday
Flouresecnece Image Merger-Blue Green by uglyboys by TBH-1138
yesterday
FF should make an iPhone app! (warning: crazy idea) by joel collins
yesterday
Colored Plastic Tiles by Qender by TBH-1138
yesterday

Recent Wiki Edits:

Indigo_Ray by Indigo Ray
February 25, 2013
Optimizing_Filters_for_Speed by Crapadilla
February 22, 2013
Feature_Wishlist by Crapadilla
September 19, 2012
Main_Page by Crapadilla
September 19, 2012
Filter_Construction:_Fundamental_Techniques by Crapadilla
September 19, 2012

Upgrade to Filter Forge 3.0 at a discount