[GEM-dev] Soft edge shading

[Florian Grond]

hello cyrille,


the glsl_fragment does not like the new shader if I bang it I get:

compile info log:
ERROR: 0:43: '!=' wrong operand types
ERROR: 0:45: '!=' wrong operand types
ERROR: 0:57: '!=' wrong operand types
ERROR: 0:59: '!=' wrong operand types

there is a type problem between float and constant int

so it says shader not loaded,

Cheers,

Florian



On 3/21/12 4:07 PM, Cyrille Henry wrote:
> hello,
>
> it look like a bug in the original shader.
> thanks for reporting it.
>
> this shader should work.
> could you test it so that i commit it if it's ok.
>
> BTW, the fade control is for both right and left.
> so it can be twice what the user expect.
> i.e if you want 10 pixel shade on the right, so 10 pixel shade also on
> the left, you have to set overlap to 20.
> maybe i should change that.
> feedback welcome.
>
> Cheers
> Cyrille
>
>
> Le 21/03/2012 19:30, Florian Grond a écrit :
>> Here I could reproduce the problem with the example patch, having it
>> extended over the tripple head projectors.
>> I basically see the shading again only if I drive the overlap to
>> extremely many pixels.
>> I was wondering if this might have something to do with the texturing
>> mode rectangle anywhere?
>>
>> I modified the the [flat_projection] so that I could define an offset
>> for the windowcreation.
>>
>> Thanks for any help,
>>
>>
>> Best,
>>
>> Florian
>>
>> On 3/21/12 1:49 PM, Cyrille Henry wrote:
>>> hello,
>>>
>>> would it be possible to see your patch?
>>> that would be easier to help.
>>>
>>>
>>> Cyrille
>>>
>>>
>>> Le 21/03/2012 18:15, Florian Grond a écrit :
>>>> Hello Jack,
>>>>
>>>> 01.flat_projection-help.pd seems to work.
>>>>
>>>> I see either as 4 by 1 or 2 by the fractal image with decreasing
>>>> intensity at the edges giving a fade into black.
>>>>
>>>> I looked into the guts of [flat_projection]
>>>>
>>>> and if I send the print message to the glsl_fragemnet and the
>>>> glsl_program I get lots of info about user variable uvar#1 to uvar#4
>>>>
>>>> I'm usin PD extended 0.42.5
>>>> I compiled GEM from the sources 0.93.3 (added some handmade classes)
>>>> My GPU NVIDIA GeForce 7300 GT
>>>>
>>>> My screen size is 1280 * 1024
>>>> geometry is x 3 y 1
>>>> I would like to have an overlap of about 10 - 15 pixels
>>>>
>>>> In my installation I see that I get a fade into black only if I
>>>> increase the overlap to very high numbers up to have the size of my x
>>>> dimension. So I conclude the fade into black is just too weak.
>>>>
>>>> How could I change that?
>>>>
>>>> Thanks,
>>>>
>>>> Florian
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> So I think the GPU model is ok
>>>>
>>>> On 3/20/12 6:51 PM, Jack wrote:
>>>>> Le 20/03/2012 21:07, Florian Grond a écrit :
>>>>>> Dear List,
>>>>>>
>>>>>> I'm currently working on a horizontal 3 screen projection (tripple
>>>>>> head) and I'm using the multiscreen projection flat projection
>>>>>> abstraction from Cyrille.
>>>>>>
>>>>>> The overlap is working nicely but I don't get the it to fade. i.e. I
>>>>>> see a vertical stripe of overlap with higher intensity.
>>>>>>
>>>>>> Any help or pointer where to look for solutions very much
>>>>>> appreciated.
>>>>>>
>>>>>> Cheers,
>>>>>>
>>>>>> Florian
>>>>>>
>>>>>>
>>>>>>
>>>>> Hello Florian,
>>>>>
>>>>> Can you tell us your configuration (Pd, Gem, GPU model) ?
>>>>> Have you a problem with the example 01.flat_projection-help.pd' ?
>>>>> ++
>>>>>
>>>>> Jack
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> GEM-dev mailing list
>>>>> GEM-dev at iem.at
>>>>> http://lists.puredata.info/listinfo/gem-dev
>>>>
>>

-- 
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F l o r i a n   G R O N D
PhD Student at Ambient Intelligence Group,
CITEC Bielefeld University, Germany
Universitaetsstrasse 21 - 23 33615 Bielefeld
Tel.: 0049 521 106 12163
http://cit-ec.org   http://grond.at

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