[GEM-dev] [ pd-gem-Feature Requests-2844090 ] get rid of upside down images

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Feature Requests item #2844090, was opened at 2009-08-25 09:59
Message generated for change (Tracker Item Submitted) made by zmoelnig
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Category: image processing
Group: None
Status: Open
Priority: 5
Private: No
Submitted By: IOhannes m zmlnig (zmoelnig)
Assigned to: IOhannes m zmlnig (zmoelnig)
Summary: get rid of upside down images

Initial Comment:
for performance reasons, Gem handles images with the origin in the lower-left corner (standard openGL image orientation) and images originating in the upper-left corner (standard for most(?) video codecs).

this makes code unnecessarily complicated, as textuing has to take care of both types of images.

since most video-decoding and -capturing APIs will naturally (for performance reasons) return images originiating in the upper-left corner, it would be good to make this the default orientation and get rid of standard-openGL-originating images alltogether.

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=507082&aid=2844090&group_id=64325