Hy Cyrille,
based on your example I could implement the Rift shadering and I can render the left and right eye seperatly. Thank you once again!
But the two shadered images (left and right) are behind each other and I cannot use "translateXYZ" (x-axis translation) to move them to their sides!? Do you have any idea?? The attached example (rift_example.pd) includes more comments and is probably a better explanation...
Br, Michael
-------- Original-Nachricht -------- Betreff: [GEM-dev] Fwd: Re: Oculus Rift distortion/support Datum: Sun, 27 Oct 2013 18:51:33 +0100 Von: Michael Mihocic michael.mihocic@oeaw.ac.at An: gem-dev@iem.at
Hy Cyrille,
thank you again for your quick reply!! Good idea, I also replied to the Gem list! (I'm not registered at the pd list...) (Sorry, if someone might be annoyed about my attachments...)
Attached you can find my progress so far but I have to mention that my scripts are still "under construction" - and not only the parameters far from optimized.... ;-)
My example consists of:
- rift_list.pd -> is the pd patch to be started, follow the
instructions on top of the file
- riftshader.pd is used for the distortion parameters, when using the
shaders:
- r4.frag/r4.vert are the shader files
- test.jpg is just any test file which will be distorted
I'm not using gemframebuffers in my patch. Currently I am simply loading 2 times the same image and processing the barrel distortions on each half of the image, left and right. But as I described below, our actual world does not consist of one image but of many objects (spheres, cubes, lines,...) within a big sphere, and the user can rotate his head inside the sphere. ((tracking will not be done with Oculus Rift tracker)) -> theoretically, my perfect solution would be to apply the distortion to "the entire stereo gemwin" somehow!? ;-)
Following the idea of your patch and introducing gemframebuffers, do you think I can realize it that way:
- every object needs to be rendered twice instead of once, and in a
framebuffer, sent to the abstraction "gemhead_rift"
- the barrel distortion is applied in the abstraction "gemhead_rift",
the parameters depending on left or right
- instead of using "stereo", I create a wider window and add
X-axis-translation
Do you think it should work that way?
Br, Michael