Created attachment 15437 [details]
Referring to OpenGL spec(spec v2.0, page 171) fomular 3.19, texobj's bias should be added when compute texture level.
The test case attached will use level 1 texture with i915 driver. With soft rendering / i965 driver, it uses level 2 texture(texobj bias + texunit bias).
fixed in mesa d30d9e42b758db452bfdb482b619a5f4c6d01037
Mass version move, cvs -> git
on Jul 28, 2016 at 22:17:34.
(provided by the Example extension).