[PD] gem and double buffer

cyrille henry cyrille.henry at la-kitchen.fr
Fri Jun 19 11:38:40 CEST 2009



jack at rybn.org a écrit :
> Yep, that's why Cyrille says that you can use [pix_snap] or
> [pix_snap2tex]. 

like in exemple 07.texture/07.feedback

>Or you can also use [gemframebuffer].

like in exemple 10.glsl/06.framebuffer and shader, but removing the shader.

> With that, you can capture a certain part of your last frame and add it to
> your new. But the result could be not very nice.

why?

> Try !
> ++
> 
> Jack
> 
> 
>> yes, but my problem is : I need to emulate single buffer on double buffer,
>> i need to use double buffer because i work with iterations using repeat or
>> until objects, and in single buffer with metro this iterators are so so so
>> slow, almost "2" fps.

wow, it's strange that it is slower in single buffer.
do you have a test patch that demonstrate this?

>>
>> i want don´t clear the image buffer when is drawed the new buffer, like an
>> accumulation...but using double buffer!!....is possible???...in single
>> buffer is easy, but with iterators....no way.

i don't understand why iterators can't work in single buffer.

cyrille


>>
>>
>> thanks for your patience.
>>
>> Message: 6
>> Date: Mon, 15 Jun 2009 18:34:18 +0200
>> From: cyrille henry <cyrille.henry at la-kitchen.fr>
>> Subject: Re: [PD] gem and double buffer
>> To: Andres Ferrari <anfex at yahoo.com>
>> Cc: pd-list at iem.at
>> Message-ID: <4A36780A.1000905 at la-kitchen.fr>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>>
>>
>> Andres Ferrari a ?crit :
>>> hello,
>>>
>>> is possible in gem to change between single buffer and double buffer
>>> without destroy gemwindow??
>> no
>>
>>> or dont`t clear buffer(background image) in double buffer???
>> not really, but you can sna2tex and draw the last image on every frame.
>>
>> you can also easily emulate 2 buffer while in single buffer, using metro
>> to bang gemhead and clean windows / clear Z buffer.
>>
>> Cyrille
>>
>>> thanks a lot!!!
>>>
>>> Andr?s Ferrari G.
>>>
>>> http://www.myspace.com/anfex
>>
>>
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> 
> 
> 




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