| commit | 50b473c96a289f10f57ee3e079f0b90a9d2c5727 | [log] [tgz] |
|---|---|---|
| author | Paul Pazderski <paul-eclipse@ppazderski.de> | Mon Nov 16 23:15:12 2020 +0100 |
| committer | Niraj Modi <niraj.modi@in.ibm.com> | Fri Jan 08 05:51:21 2021 -0500 |
| tree | 62f7cf9d27eb2c7dc00ca2864d37fed255a76b17 | |
| parent | 5e5655dc5644e5d195bbec82eaf39176fb324241 [diff] |
Bug 566545 - [Win32] Image may reduce quality of 8-bit ImageData Creation of an Image from existing ImageData can result in reduction of the actual image quality. Image will convert the data into a format which Windows can understand. An 8-bit direct color image was always converted into a 16-bit direct color image. The Windows compatible 16-bit image is fixed to use 5 distinct bits for each channel red, green and blue. However the ImageData used to create the Image does not apply such restrictions. It is possible to create an 8-bit ImageData where each color use the same 8 bit which results in a gray-scale image. Such an image cannot converted into 16-bit because if each channel use 8 distinct bits it requires 24 bit to encode the full range of 256 different grays the source data can contain. Change-Id: Ic557068a1d72e5fcd2e3458c8ade6917e01e6db7 Signed-off-by: Paul Pazderski <paul-eclipse@ppazderski.de>
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