Debian amd64, Radeon HD with fglrx
Broken: current GIT, also many previous versions were affected in case of BI Baking
**Short description of error**
Dithering is not applied for Texture Baking, resulting in banding artefacts.
Cycles Baking and BI Baking are affected.
Also when saving a 32 bit float image as 8 bit PNG, no dithering is applied (despite Dithering was set to 1.0, and "Save as Render" was activated).
**Exact steps for others to reproduce the error**
A .blend file is attached. Click on "Bake" and wait a few seconds. After baking is finished you should see the banding artefacts in the dark-gray regions.