Hi, Robert,
Sorry for the confusion. I'm using the term by photographers
(black and white film vs. color film). By black and white I mean
gray scale images. I think there might be something particular
with the first jpeg file that causes some attributes be set which
makes all future images assigned to that texture rendered in
gray scale mode. Let me see if I can send that jpeg file to you
at a later time for testing (it's not on the computer I'm using
right now).
Regards,
Yefei
Quoting Robert Osfield <[EMAIL PROTECTED]>:
> Hi Yefei,
>
> I don't really follow what the problem is. Is it a problem in the
> Jpeg plugin? What do you mean by black and white mode? Do you mean
> its the plugin is generating an luminance or intensity image?
>
> Robert.
>
> On 8/18/07, Yefei He <[EMAIL PROTECTED]> wrote:
>> Hi, folks,
>>
>> I have noticed this phenomenon regarding textures. I wonder if anybody
>> have an
>> idea on how it can be solved:
>>
>> I'm creating a rectangular geometry with an osg::Texture2D as its
>> texture, and
>> The image of the texture is assigned via setImage(osg::Image* image), which
>> is in
>> turn created from a call to osgDB:ReadImageFile(). The image is a jpg file.
>> It
>> appears that if the jpg file is in B&W mode, then even if I call setImage()
>> again
>> to assign a different image loaded from a color jpg file, the result remains
>> in
>> black and white. Is there a state I have to explicitly set to turn the
>> texture into
>> color mode? The B&W jpg file is a solid black image and the file size is
>> 9KB. An
>> identical image in color mode has a file size of 12KB. If I load the 12KB
>> jpg file
>> as the initial image of the texture, then subsequent color images are all
>> rendered
>> correctly in color.
>>
>> Thanks,
>>
>> Yefei
>>
>>
>>
>> _______________________________________________
>> osg-users mailing list
>> [email protected]
>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>>
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