reading pixels from a TARGET texture

Sanette <[email protected]>
Newsgroups gmane.comp.lib.sdl
Message-ID <[email protected]> 
Hi

I'm using a texture with SDL_TEXTUREACCESS_TARGET flag and I blit onto
this one (with SDL_RenderCopy) a number of other textures to finally
get my image.

Then I would like to get the final pixel array of that texture in
order to do more image processing by hand.

What is the best way to obtain this pixel array ?

thx
S.
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