Details
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Type:
Bug
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Status: Closed
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: 5.1.2, 6.0.0_P01
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Fix Version/s: 6.0.1
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Component/s: Core/Rendering
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Labels:None
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Environment:All
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Support Case References:Support Case #13588 - https://icesoft.my.salesforce.com/5007000001S8D3a
Description
In the provided PDF file there are a few images of cards on the second page. These images are rendered almost black when they should be in full colour. I don't see any exceptions thrown in the logs.
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Ugh, looks we're actually looking at a transparency group issue.
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Patrick Corless
added a comment - Ugh, looks we're actually looking at a transparency group issue.
Managed to find the rendering issue which is related to the selected blending mode as defined in the PDF transparency section of the specification. The blending modes in question are Multiply and Screen. Our rendering pipeline doesn't have support for this as we have to save each graphic chunk to a buffer to apply the blending mode which is expensive and lowers the quality. We have a few short cuts in our core which can be tweaked.
Show
Patrick Corless
added a comment - Managed to find the rendering issue which is related to the selected blending mode as defined in the PDF transparency section of the specification. The blending modes in question are Multiply and Screen. Our rendering pipeline doesn't have support for this as we have to save each graphic chunk to a buffer to apply the blending mode which is expensive and lowers the quality. We have a few short cuts in our core which can be tweaked.
Pretty sure we have a viable fix for this issue but will need to verify via a full Qa run.
Show
Patrick Corless
added a comment - Pretty sure we have a viable fix for this issue but will need to verify via a full Qa run.
Looks like an sMask issue with the images in question. Targeting next release.