pan/mdg: Fix perspective combination
authorAlyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Mon, 31 Aug 2020 18:20:59 +0000 (14:20 -0400)
committerMarge Bot <eric+marge@anholt.net>
Mon, 31 Aug 2020 19:43:55 +0000 (19:43 +0000)
It's not enough to multiply by a .w reciprocal, we have to be taking the
reciprocal of the thing we're actually multiplying against.

Fixes incorrect rendering in Manhattan.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6525>


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