From: Colin Middleton (colin++at++reading.sgi.com)
Date: 03/28/2000 09:58:33
Performer will by default use 16 bit textures for colour textures eg RGB565
or RGBA5551. These look very bad when there is a low frequency variation in
colour over the texture. This could be your problem. Try changing the
internal texture format to RGBA_8 or RGB_12.
Hope this works!
Colin.
> -----Original Message-----
> From: Gilles GALLEE [mailto:gallee++at++oktal.fr]
> Sent: 28 March 2000 18:36
> To: liste PERFORMER
> Subject: Bad rendering with very large texture
>
>
>
> I want to apply an RGB texture (size 1024x32) on a very big face with
> the same ratio (width x height).
>
> With no texturation parameters, rendering is horrible (bad
> color pixels
> appear between texels). When i change texturation parameters
> (MAG_FILTER), the result is the same.
>
> I try the sample program 'mipmap' compiled for Open GL and, the result
> is the same. If i resize my texture to set it like square,
> rusult is the
> same...
>
> I try to use Open Inventor and if i set SoComplexity node to hight
> quality texture, result is perfect !!!! Smooting is good beteween
> texels.
>
> So, what is good parameters on Performer to have a good rendering ??
>
>
> Thank you very much for your help.
>
> Gilles.
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