Blake Thompson 4184f75011 Moved premultiply and demultiply out of image_32 and other parts of the code. The image_data object is now responsible for keeping track of its own premultiplied_alpha status. Created a new utility method in image_util to preform premultiplication. ...

Added visitor pattern to several different methods as well to prepare for image_data_any including compositing.

Ref #2633

2015-01-14 12:42:30 -06:00

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Moved premultiply and demultiply out of image_32 and other parts of the code. The image_data object is now responsible for keeping track of its own premultiplied_alpha status. Created a new utility method in image_util to preform premultiplication.

2015-01-14 12:42:30 -06:00