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Commit 68dead11 authored by Samuel Pitoiset's avatar Samuel Pitoiset
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radv: update the ZRANGE_PRECISION value for the TC-compat bug

On GFX8+, there is a bug that affects TC-compatible depth surfaces
when the ZRange is not reset after LateZ kills pixels.

The workaround is to always set DB_Z_INFO.ZRANGE_PRECISION to match
the last fast clear value. Because the value is set to 1 by default,
we only need to update it when clearing Z to 0.0.

We also need to set the depth clear regs and to update
ZRANGE_PRECISION when initializing a TC-compat depth image to 0.

Original patch from James Legg.

This fixes random CTS fails with
dEQP-VK.renderpass.suballocation.formats.d32_sfloat_s8_uint.input.*

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105396


CC: <mesa-stable@lists.freedesktop.org>
Signed-off-by: default avatarSamuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: default avatarBas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
parent 183adc51
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