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Report From: Delphi-BCB/VCL/Graphics [ Add a report in this area ]

Report #: 103264

Status: Closed

Saving a TWICImage as tiff creates black images on Win 64-bit platform

Project: Delphi

Build #: 16.0.4358.4554

Version: 16.3

Submitted By: Marc Stehlin

Report Type: Basic functionality failure

Date Reported: 2/8/2012 7:26:10 AM

Severity: Critical / Show Stopper

Last Updated: 9/5/2012 8:01:01 PM

Platform: All versions

Internal Tracking #: 289858

Resolution: Fixed (Resolution Comments)

Resolved in Build: : 17.0.4625.53395

Duplicate of: None

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Description

On my machine Win7 6.1(Build 7601: Service Pack 1), changing the image format of a TWICImage does not produce the same result whether you execute on 32-bit or on 64-bit platform. On 32-bit, the image is converted in tif format. On 64-bit, it produces a black image.

If you don't change the format (e.g. open a tiff file in a TWICImage and save it as tiff too), it works as expected on both platforms.

Steps to Reproduce:

1. Create a TWICImage
2. Assign a TBitmap to it
3. Set the file format to wifTiff
4. Save the WICImage

Executing the attached project, when you click the button, it will read the bitmap file "ImgRead.bmp" and create the tif file "ImgSaved.tif". I attached the resulting images too.

Workarounds

None

Attachment

WriteTiff.zip

Comments

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