[Bug 77312] wine's d3d8/9 visual tests fail on i965

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77312

--- Comment #5 from asimiklit <andrey.simiklit at gmail.com> ---
Created attachment 143727
  --> https://bugs.freedesktop.org/attachment.cgi?id=143727&action=edit
Small explanation of a wine test

I am still working on a piglit test for this issue:
https://gitlab.freedesktop.org/mesa/piglit/merge_requests/18

and on a mesa fix for it:
https://gitlab.freedesktop.org/mesa/mesa/merge_requests/466

Seems 'Step 2' mentioned on the attached picture doesn't
work on Intel. It just clean (with depth value 0.0) the whole
depth buffer size ignoring the scissors and as result depth test 
doesn't accept green and red rectangles at all because their z > 0.0.

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