Possible bug in ProjectorBlend.toe

Bugs
1

HI all

I am currently working on a project involving projector blending.
Seems that i found a bug in the projectorBlend.Toe

To make the bug clear i used a rainbow color image, each column is 96 pixels, 96 pixels is also the overlap. I also used only 2 projectors

If i blend only the middle of the image , everything is fine

(the picture displayed is the output of projectorBlend TOE. )

blend ok.jpg
blend ok.jpg1055×522 47.2 KB

the column number 20 from VP1 , overlaps correctly the column number 20 from VP2.

I need also to blend the left part of the Projector 1, so i use the “Per side control” and add 96 pixel blending on Projector 1 : Projector1posOc11 and Projector1posOc12 = 96.

blend bug.jpg
blend bug.jpg1153×578 47.2 KB

Here comes the bug :

I can correctly Blend the left part ( colomn 1) , but it also shift the whole image from Projector 2 , so it do not blend anymore correctly the middle part , the column 20 from projector 1 is not anymore over column 20 from projector 2 , but over column 19 from projector 2.

I started to investigate the bug, but after opening the toe file … i got scared , and need to focus on the the content i will project … I do not know who did this TOE file, but i would greatly appreciate he could correct the bug :wink:

Thanks
Build 56020

2

Hi

You’re right, there is a bug in the GLSL shader script. I had similar issues by using the right blankout on the second of three projectors. I fixed the code and it worked out fine for me.

Check out the attached .tox file …hope this helps!

Build 58620
projectorBlend_FixedBlankout.tox (8.9 KB)

3

Thanks Oliver for debugging this,

I moved your fix into the latest build.

Cheers
Markus