[vtkusers] Texture Mapping Image Quality

[David Gobbi]

Hi Patrick,

Some graphics cards default to 16-bit textures, be sure to force
VTK to use 32-bit textures:

atext SetQualityTo32Bit

 - David


On Mon, 30 Aug 2004, Patrick Lowry wrote:

> To All:
>
> The texture mapping capabilities of VTK are amazing but I noticed image
> quality loss from the original TIFF.  Texture mapping done by a commercial
> program I have does not suffer the same quality loss.  The essence of the
> image part of the TCL script are shown below.  Any ideas on preventing
> image quality loss?
>
> Thanks in advance.
>
> Patrick Lowry
>
> .
> .
> .
> vtkTIFFReader readTIFF
>    readTIFF SetFileName "data/test1comp.TIF"
>    readTIFF Update
> vtkTexture atext
>    atext SetInput [readTIFF GetOutput]
>    atext InterpolateOn
> .
> .
> .
> vtkTextureMapToPlane test
>    test SetInput [normals GetOutput]
>    test SetOrigin $xmin $ymin 0.0
>    test SetPoint1 $xmax $ymin 0.0
>    test SetPoint2 $xmin $ymax 0.0
>
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