[PDFBOX-1970] 1.8 shadings are sometimes flipped

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.8.4
• Fix Version/s: 1.8.5
• Labels: shading shadingpattern
• Assignee: Unassigned
• Reporter: Tilman Hausherr
• Created: 08/Mar/14 12:55
• Updated: 02/May/14 06:12
• Resolved: 09/Mar/14 14:04

Description

Some of my shading test images are sometimes flipped when done with the 1.8 branch, not with the trunk. I have observed this with shadingtype 1, 4 and 5.

The shadingContext is created with an AffineTransform (the CTM is identical and its just a translation) of
[1.0, 0.0, 399.0]
[0.0, 1.0, 49.0]
for the 1.8 branch (bad)

and with
[1.0, 0.0, 399.0]
[0.0, -1.0, 149.0]
for the trunk (good).