Different behaviour between 7.9.0.1 and 7.9.2-7.13.1 for jpg thumbnail of psd file

[usemagi]

I've encountered different behaviour between n 7.9.0.1 and 7.9.2+ versions

On 7.9.0.1 I see this result:


On 7.9.2:
http://i.piccy.info/i9/96342732c87aa8c0 ... 131res.jpg

Question: is this a bug or its a fixed bug?

File:
https://drive.google.com/open?id=1Au-CS ... JcYZxjWqWG

Sample code:

Code: Select all

var fi = new FileInfo(@"C:\test\02_alpha-channels.psd");
IMagickImage image = new MagickImage(fi);
MagickGeometry geometry = new MagickGeometry(400, 400);
image.Thumbnail(geometry);
image.Format = MagickFormat.Jpg;
image.Quality = 100;

MagickImage backgroundImage = new MagickImage(Color.White, image.Width, image.Height);
{
     backgroundImage.ColorSpace = image.ColorSpace;
     image.Composite(backgroundImage, CompositeOperator.DstOver);
}

image.Write(@"C:\test\res.jpg");

[snibgo]

between n 7.9.0.1 and 7.9.2+ versions
On 7.9.0.1 I see this result: ...

No versions of IM have those version numbers.

Your title say you are reading a PDF, but your code shows you are reading a PSD.

[usemagi]

sorry, yes, psd.
Those versions of Magick.Net I wrote in that subforum.

7.9.0.1 corresponds to ImageMagick 7.0.8-14
7.9.2 corresponds to ImageMagick 7.0.8-17 beta

[usemagi]

The changes is in 7.9.1.0 of Magick.NET. In 7.9.0.2 -it worked as previous version