vtn: Remove transpose(m0)*m1 fast path (!26821) · Merge requests · Mesa / mesa · GitLab

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Konstantin Seurer requested to merge KonstantinSeurer/mesa:vtn-matrix-mul-invariant into main Dec 27, 2023

vtn: Remove transpose(m0)*m1 fast path

This is broken for games that rely on invariant geometry since the usage
of matrices can affect how gl_Position is computed. The fdot fastpath
relied on if and hot fdot is lowered for correctness.

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9562
cc: mesa-stable