Nanley Chery
0d3b61dd7e
This function has a number of problems:
1. It performs 24-bit quantization on a format which shouldn't be
quantized at all (PIPE_FORMAT_Z32_FLOAT_S8X24_UINT).
2. The algorithm seems to create a different pixel than HW would in the
absence of this SW conversion. This can cause issues with depth
testing.
Instead of adding more code to deal with these issues, delete the
quantization code.
This code originated from i965
(0ae9ce0f29) and helped to avoid a
regression in Lightsmark 2008. This change continues to avoid that
regression because any new clear value is now casted from double to
float before checking if the resource's clear value has changed.
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/3783
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7665>
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