tree f2f8e3ac1c33e295870097506cd5fe27d8f38419
parent ecb8cba09f3e4d599bb3b82c036e28aefe500a66
author Kalle Raita <kraita@google.com> 1500414735 -0700
committer Alexander Galazin <Alexander.Galazin@arm.com> 1502992381 -0400

Add triangle edge guardband for Tex2D lookup diff

Previously 3D and cube textures allowed pixels along the seam of
triangles to use data from either triangle. This change copies that
allowance to the 2D texture computeTextureLookupDiff. The projection
values chosen for the mipmap.2d.projected group make the data
discontinous over the edge, making it sensitive to tie-breaker
resolution. This change resolves the issue.

Affects: framework

Test: Executed mipmap.2d.projected group with failing result images
Bug: 63335787
Change-Id: Ibaed590fb5e1bc9eb837c9027ddadcea2081f629
(cherry picked from commit dcb5991811ed287fc4a72126663136a94eb7dc39)