The Vivante GPUs have a hardware bug where trilinear filtering
(MIP=LINEAR) produces incorrect results when used with depth/stencil
textures that have shadow comparison enabled, leading to GPU hangs.
Work around this by forcing MIP=NEAREST for depth/stencil formats,
downgrading from trilinear to bilinear filtering as done by binary blob
too.
Fixes dEQP-GLES3.functional.texture.shadow.*.linear_mipmap_linear.*
except DEPTH32F ones on all GPUs I have access to.
Signed-off-by: Christian Gmeiner <cgmeiner@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38308>
Christian Gmeiner
0c31313b6e