Cycling 74 » Topic: optimizing texture handling http://cycling74.com/forums/topic/optimizing-texture-handling/feed Mon, 17 Jun 2013 23:39:15 +0000 http://bbpress.org/?v=2.2.4 http://cycling74.com/forums/topic/optimizing-texture-handling/#post-46188 <![CDATA[optimizing texture handling]]> http://cycling74.com/forums/topic/optimizing-texture-handling/#post-46188 Wed, 28 Oct 2009 01:37:52 +0000 pry Hi everybody,

I’m trying to build a generic movie-to-texture patch to put inside a poly.
I want to control color and basic geometry (zoom and offset) at the texture level before sending it to a mesh (via an effects chain or directly).
the basic patch is below.
I guess there is a more efficient way than using a slabs chain and that the the td.rota shader is not indispensable, but I’m a little lost. Any suggestion is welcome.
In particular, I wonder if the srcdimstart/end and dstdimstart/end functions of the jit.gl.texture object are perfomed by the GPU and if it it could be a good way to scale/position a picture (?)

thanks

pry

– Pasted Max Patch, click to expand. –

]]> http://cycling74.com/forums/topic/optimizing-texture-handling/#post-166358 <![CDATA[Re: optimizing texture handling]]> http://cycling74.com/forums/topic/optimizing-texture-handling/#post-166358 Wed, 28 Oct 2009 15:42:39 +0000 Bas van der Graaff I’m wondering why you would want to do all this before the mesh? You can edit the texture map and color on the gpu too. You could also write a shader to do it. Tryout patch below:

– Pasted Max Patch, click to expand. –

]]> http://cycling74.com/forums/topic/optimizing-texture-handling/#post-166359 <![CDATA[Re: optimizing texture handling]]> http://cycling74.com/forums/topic/optimizing-texture-handling/#post-166359 Wed, 28 Oct 2009 15:56:21 +0000 Kyred about the “need more maths…”
You can search the famous magic texcoord patch by Wes somewhere on C74 forum.

]]> http://cycling74.com/forums/topic/optimizing-texture-handling/#post-166360 <![CDATA[Re: optimizing texture handling]]> http://cycling74.com/forums/topic/optimizing-texture-handling/#post-166360 Wed, 28 Oct 2009 23:56:32 +0000 pry thanks for your replies,

actually, I’d like to apply multi-texture to the mesh (see more complete patch below) and to be able to scale and position each texture individually, that’s why I suppose tex_map is not the key.
But I want these operations to be performed by the GPU, so probably the best solution is to merge uyvy2rgba and rota shaders (?)

pry

– Pasted Max Patch, click to expand. –
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