Hello,
I fond the following problems with IrfanView:
1) When I convert a 32 bit TGA to PNG, the alpha is lost. I was using the command line option /convert, then I tried opening IrfanView and "Save as". Why does it ask me to pick a color? The TGA already has an alpha channel, with alpha variations and not associated with any color.
2) Also cropping a PNG with alpha loses the alpha. Again I was using the command line option /crop.
3) I'm guessing the /panorama option also doesn't handle alpha. The only way I found to create a contact sheet in the command line is creating several panoramas.
And one suggestion: most programs, when displaying an image with transparency, use a checkered background behind it. It would be nice to have that in IrfanView.
I fond the following problems with IrfanView:
1) When I convert a 32 bit TGA to PNG, the alpha is lost. I was using the command line option /convert, then I tried opening IrfanView and "Save as". Why does it ask me to pick a color? The TGA already has an alpha channel, with alpha variations and not associated with any color.
2) Also cropping a PNG with alpha loses the alpha. Again I was using the command line option /crop.
3) I'm guessing the /panorama option also doesn't handle alpha. The only way I found to create a contact sheet in the command line is creating several panoramas.
And one suggestion: most programs, when displaying an image with transparency, use a checkered background behind it. It would be nice to have that in IrfanView.
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