Christian Duerr 781ea0997b panfrost: Fix dual-source blending
If dual blending is enabled, only 1 output is supported. Multiple
outputs confuse the write combining pass in this case, leading to
incorrect output and/or an assert failure in emit_fragment_store.

The fix is straightforward, just skip the speculative emitting of
multiple outputs in the case where dual source blending is enabled.

This also adds an extra sanity check in `pan_nir_lower_zs_store` to
check for only one blend store being present.

Fixes: c65a9be421 ("panfrost: Preprocess shaders at CSO create time")
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9487
Co-Authored-By: Eric R. Smith <eric.smith@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26474>
(cherry picked from commit 49c1b404e5)
2024-02-07 16:22:20 +00:00
2022-11-22 19:04:13 +00:00
2024-02-01 01:10:50 +00:00
2023-10-25 15:29:22 +00:00
2024-02-07 16:22:20 +00:00
2022-01-19 15:17:17 +00:00
2022-11-21 23:09:30 +00:00
2024-02-01 01:00:16 +00:00

`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library
======================================================


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