[PD] pix_mask and gemframebuffer

[Max]

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Am 09.11.2011 um 14:41 schrieb cyrille henry:
> Le 09/11/2011 12:23, Max a écrit :
>> thanks cyrille,
>> am i getting closer?
> yes, a bit.
> except that :
> - gemframbuffer does not have the same camera position than gemhead.
> you need to add translateXYZ 0 0 -4

ah, right.
works! but looks terrible. i am wondering why the resolution and edge looks so bad.

> - pix_snap snap the curent frambuffer, you don't need to pass the framebuffer texture.
> see attachment.
> 
>> it's ok if it is slow, but i want to use gem objects to make a mask i can animate in gem, so there is now way around the snapping if i understand that correctly.
> it's possible with shader : render 1st scene in a frambuffer
> other scene in a 2nd frambuffer. set it to use texunit 1
> then, use something like the example : 10.glsl/5.multitexture, and change a bit the mixing equation.

ok, seems that the answer on anything gem related i try lately is glsl.
max


> cyrille
> 
>> 
>> max
>> 
>> 
>> Am 09.11.2011 um 14:07 schrieb cyrille henry:
>> 
>>> hello,
>>> pix_masque need a pix, not a texture.
>>> (one is in the CPU, the other in the GPU).
>>> you need a pix_snap to pass the texture to a pix object.
>>> beware, this is slow.
>>> i recommend using a shader to emulate pix_masque, but using 2 texture and not 2 pix.
>>> it will be hundred time faster.
>>> 
>>> 
>>> Cyrille
>>> 
>>> 
>>> Le 09/11/2011 11:52, Max a écrit :
>>>> dear list,
>>>> 
>>>> i'm trying to generate a b/w mask in gemframebuffer for a pix_mask
>>>> pix_mask seems to ignore the texture from gemframbuffer.
>>>> hints appreciated.
>>>> m.
>>>> 
>>>> 
>>>> 
>>>> 
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>> 
> <masking3.pd>

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