32 BPP Icon not displayed in TIFF

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Clo
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32 BPP Icon not displayed in TIFF

Post by Clo » Mon Jan 15, 2007 12:06 am

:) Hello !

• I've a small multi-page TIFF I use for tests, containing only icons among which a 32 BPP one.

• It's displayed OK with 1.82.4 and also with 1.90 Alpha 3 I've kept installed still, but not with 1.90 RC1. :bug: ?

- All versions have the same settings for TIFF.

- The test-file is available HERE.

• Please, display the file in “View” and scroll its content up to the page #10 which is this 32 BPP icon, 24² pixels.
- The whole info is displayed in the status-bar, but the image itself is not, it seems totally “transparent”,
there is only the BG-colour of the window !

• Can someone confirm ? All feedback welcome ! TIA !

:mrgreen: KR
Claude
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marsh
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Post by marsh » Mon Jan 15, 2007 1:48 am

I see it. It completely vanishes with option '[x]Use transparent index (<=8bits) or alpha channel'. It reappears with option off.

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Clo
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Good detail !

Post by Clo » Mon Jan 15, 2007 2:46 am

:) Hello !

• Thank you for checking, B.!
I see it. It completely vanishes with option '[x]Use transparent index (<=8bits) or alpha channel'. It reappears with option off. It is definitey different from v.1.82.4...
• Quite right ! This option does nothing else than to make the whole 32 BPP icon invisible…
- It's ticked in 1.82.4, and the 32 BPP IS displayed !
- Because THIS, the TIFF contains icons having coloured backgrounds only.
- However, this one #10 has transparent rounded corners (a few), and the #12 too (larger).
- These corners look as black, that is not nice… The transparency is not applied at all,
and I wonder to learn how to get it displayed for such 24 BPP icons… :?
- Accuracy : the transparency exists in these icons, I made it with the SnIco specialized freeware…

:mrgreen: FR
Claude
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Re: 32 BPP Icon not displayed in TIFF

Post by xnview » Mon Jan 15, 2007 8:15 am

Clo wrote: • Please, display the file in “View” and scroll its content up to the page #10 which is this 32 BPP icon, 24² pixels.
- The whole info is displayed in the status-bar, but the image itself is not, it seems totally “transparent”,
there is only the BG-colour of the window !

• Can someone confirm ? All feedback welcome ! TIA !
It's normal, the alpha channel is black
Pierre.

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