[GEM-dev] Oculus Rift distortion/support
Antoine Villeret
antoine.villeret at gmail.com
Wed Sep 11 20:14:43 CEST 2013
hi,
I confirm that the example "01.simple_texture.pd" doesn't work for me on
Windows 7 with pd-extended 0.44-0 and Gem 0.93.3
And none of the 10.glsl/ example work.
All send the same errors:
[glsl_vertex]: error reading file
[glsl_fragment]: error reading file
+
a
--
do it yourself
http://antoine.villeret.free.fr
2013/9/11 Cyrille Henry <ch at chnry.net>
> hello,
>
> this shaders works for me.
> i don't know the cause of the problem.
>
> cheers
> c
>
>
> Le 11/09/2013 13:40, Michael Mihocic a écrit :
>
> Thanks again for your help!!
>>
>> What I did:
>> - I downloaded and installed Pd-extended for Windows from here:
>> http://puredata.info/**downloads/pd-extended<http://puredata.info/downloads/pd-extended>(v0.43.4, Windows Installer)
>> - I started pd with "pd-extended.bat" in pd folder
>> - When I'm running pd all GEM details are displayed (version,...) -> I
>> guess GEM is loaded properly
>> - I opened example patch 01.simple_texture.pd in folder
>> \extra\Gem\examples\10.glsl
>> - I can load the images but when I want to load the shader these error
>> messages are displayed:
>> [glsl_vertex]: error reading file
>> [glsl_fragment]: error reading file
>> - after replacing all CRLF by CR I receive different error messages, as I
>> described below!?
>> I could load neither .vert nor .frag files! I will send them to you in a
>> seperate email.
>> The files are existing and found by pd, otherwise I would receive a
>> different error message....
>>
>> Br, Michael
>>
>> -------- Original Message --------
>> Subject: Re: [GEM-dev] Oculus Rift distortion/support
>> From: Cyrille Henry <ch at chnry.net>
>> To: gem-dev at iem.at
>> Date: 11.09.2013 12:03
>>
>>>
>>>
>>> Le 11/09/2013 08:35, Michael Mihocic a écrit :
>>>
>>>> Dear list,
>>>>
>>>> I tried to get familiar with shaders in GEM. I started with
>>>> "01.simple_texture.pd" in folder 10.glsl.
>>>>
>>>> I can start rendering (checking "rendering") but I cannot load shaders.
>>>> After checking the rendering checkbox 2 errors occur:
>>>> [glsl_vertex]: need to load a shader
>>>> [glsl_fragment]: need to load a shader
>>>>
>>>> When I try to use shaders (click on "load shader") I receive the error
>>>> message:
>>>> linking: link 1.5 3.5
>>>> [glsl_program]: Info_log:
>>>> [glsl_program]: Vertex info
>>>> -----------
>>>> (0) : error C5145: must write to gl_Position
>>>> [glsl_program]: Link failed!
>>>>
>>>> These errors occur when I either try to open a ".vert" or a ".fraq"
>>>> file! Do you have any ideas what I could try to use different shaders???
>>>> Below I'm listing my system details:
>>>>
>>>> are you really sure you did not modifies oher things in the shader
>>> code?
>>> if so, could you send them to me so that i can check.
>>> c
>>>
>>>
>>> - pd: 0.43.4-extended
>>>> - GEM: 0.93.3
>>>> - System: Windows 7-64
>>>> - Folder contains no spaces: "C:\pd-0.43.4\extra\Gem\**
>>>> examples\10.glsl"
>>>> - I replaced all CRLFs with CRs as I found in
>>>> https://sourceforge.net/p/**pure-data/bugs/864/?page=2<https://sourceforge.net/p/pure-data/bugs/864/?page=2>(otherwise I get the errors
>>>> [glsl_vertex]: error reading file
>>>> [glsl_fragment]: error reading file
>>>> - I also tried to run pd with Admin permissions
>>>>
>>>> Thanks in advance!!
>>>>
>>>> Br, Michael
>>>>
>>>>
>>>> -------- Original Message --------
>>>> Subject: Re: [GEM-dev] Oculus Rift distortion/support
>>>> From: Jack <jack at rybn.org>
>>>> To: gem-dev at iem.at
>>>> Date: 25.07.2013 12:22
>>>>
>>>>> Hello,
>>>>>
>>>>> Yep, and if oculus doesn't provide a shader for barrel distortion,
>>>>> there
>>>>> is plenty of example on the web.
>>>>> ++
>>>>>
>>>>> Jack
>>>>>
>>>>>
>>>>>
>>>>> Le 25/07/2013 12:17, Cyrille Henry a écrit :
>>>>>
>>>>>> hello,
>>>>>>
>>>>>> one have to use shader in order create the image distortion.
>>>>>>
>>>>>> i think oculus should provide standard shader that you have to insert
>>>>>> in your rendering process.
>>>>>>
>>>>>> the only problem is that you have to do 2 rendering : one for each
>>>>>> eye.
>>>>>> The best solution is to do a 3 pass rendering :
>>>>>> 1st : left eye view without distortion, rendered in a frame buffer
>>>>>> 2nd : right eye view (no distortion / framebuffer)
>>>>>> 3rd : using the 2 previous texture and a shader, render the final
>>>>>> image
>>>>>>
>>>>>> cheers
>>>>>> c
>>>>>>
>>>>>>
>>>>>> Le 25/07/2013 12:04, Michael Mihocic a écrit :
>>>>>>
>>>>>>> Dear list,
>>>>>>>
>>>>>>> we are using GEM with a head-mounted-display to present a virtual
>>>>>>> world to subjects performing acoustic localization experiments.
>>>>>>>
>>>>>>> Now we plan to switch from our current HMD to Oculus Rift (an
>>>>>>> upcoming virtual reality head-mounted display). Therefore we need to
>>>>>>> modify our image and add (asymetric) barrel distortion to the
>>>>>>> represented image. (The image distortion is compensated by the lenses
>>>>>>> in Oculus Rift.)
>>>>>>>
>>>>>>> My questions now:
>>>>>>> - Is there an easy solution to implement barrel distortion to the
>>>>>>> rendered window in GEM?
>>>>>>> - Does anybody of you already have some experience with GEM together
>>>>>>> with Oculus Rift?
>>>>>>>
>>>>>>> Since attachments should be avoided in this list, I do not send any
>>>>>>> example pictures of the distortion or our current presented world. If
>>>>>>> you are interested you can either contact me and I can send you some
>>>>>>> screenshots, or you can google for example images/videos of Oculus
>>>>>>> Rift distortion.
>>>>>>>
>>>>>>> Thanks in advance and best regards, Michael
>>>>>>>
>>>>>>> ______________________________**_________________
>>>>>> GEM-dev mailing list
>>>>>> GEM-dev at iem.at
>>>>>> http://lists.puredata.info/**listinfo/gem-dev<http://lists.puredata.info/listinfo/gem-dev>
>>>>>>
>>>>>
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>>>>>
>>>>
>>>> --
>>>> Michael Mihocic
>>>> Psychoacoustics & Experimental Audiology
>>>> Acoustics Research Institute <http://www.kfs.oeaw.ac.at/>
>>>> Austrian Academy Of Sciences <http://www.oeaw.ac.at/>
>>>> Wohllebengasse 12-14 / 1
>>>> A-1040 Vienna, Austria
>>>> Tel: +43 (1) 51581 2515 (Office)
>>>> Tel: +43 (1) 51581 2525 (Lab)
>>>> Fax: +43 (1) 51581 2530
>>>> michael.mihocic at oeaw.ac.at <mailto:michael.mihocic at oeaw.**ac.at<michael.mihocic at oeaw.ac.at>
>>>> >
>>>>
>>>>
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>>>>
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>>
>> --
>> Michael Mihocic
>> Psychoacoustics & Experimental Audiology
>> Acoustics Research Institute <http://www.kfs.oeaw.ac.at/>
>> Austrian Academy Of Sciences <http://www.oeaw.ac.at/>
>> Wohllebengasse 12-14 / 1
>> A-1040 Vienna, Austria
>> Tel: +43 (1) 51581 2515 (Office)
>> Tel: +43 (1) 51581 2525 (Lab)
>> Fax: +43 (1) 51581 2530
>> michael.mihocic at oeaw.ac.at <mailto:michael.mihocic at oeaw.**ac.at<michael.mihocic at oeaw.ac.at>
>> >
>>
>>
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>> GEM-dev mailing list
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>> http://lists.puredata.info/**listinfo/gem-dev<http://lists.puredata.info/listinfo/gem-dev>
>>
>>
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