Here is a list of know bugs, ordered by priority from high to low:
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black borders around the viewer when zooming out and multithreading is disabled
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Tab traversal is not set up properly, and sometimes couter-intuitive. Many users still have a keyboard and use it, so this should be fixed. Refs: http://qt-project.org/doc/qt-4.8/qwidget.html#setTabOrder http://qt-project.org/doc/qt-4.8/focus.html
- Resampling nodes (Transform, CornerPin) do not implement texture filtering, see MrKepzie#258. When downsizing an image with a factor larger than 1.5, the image should be blurred before being downscaled to avoid aliasing artifacts. Mipmapping and anisotropic texture filtering, which solve this problem, will be implemented in the future.
Here is a list of non-blocking bugs / wanted features:
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implement Fields and Field Rendering: http://openfx.sourceforge.net/Documentation/1.3/ofxProgrammingReference.html#ImageEffectsFieldRendering
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support OpenGL rendering
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support Half float images