--- Win7 64bit ---
--- Graphics Card - AMD HD6800 Series ---
--- 2.68a ---
When I like to have a small texture rendered as grainy "as is", I have to go to "Image Sampling" and uncheck "Interpolation", I guess.
This works fine for all types of filters but not for "EWA" filter type (the default filter type setting).
Here the filtering gets seemly lower but not deaktivated when I disable Interpolation.
I'm not sure this is the way it should behave. Seems illogical to me somehow.
with best regards
Martin
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Confirmed, though other filter types also have some effect. FELINE was the only one I could disable.
Attached example file.
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This seems to work correctly. According to the wiki [1] the filter setting is used independent from the Interpolation and MipMap settings. If you want to disable filtering altogether you need to disable Interpolation and set the filter to "Box" with size 1 (default setting).
Other filter settings are most useful when texture is scaled down, so multiple texels contribute to a rendered pixel. OTOH if you scale the texture up so that a single texel covers a larger area the Interpolation becomes more noticable.
[1] http://wiki.blender.org/index.php/Doc:2.6/Manual/Textures/Types/Image#Image_Sampling
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Thanks for answering.
Then I had probably misunderstood this settings. I still can't get the hierarchy and logic behind it, but of course I can achieve my desired result.