[Mesa-dev] [Bug 103265] [llvmpipe] piglit depth-tex-compare regression

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103265

--- Comment #1 from Roland Scheidegger <sroland at vmware.com> ---
(In reply to Vinson Lee from comment #0)
> commit be3ab867bd444594f9d9e0f8e59d305d15769afd
> Author: Marek Olšák <marek.olsak at amd.com>
> Date:   Mon Oct 2 22:30:55 2017 +0200
> 
>     tgsi: implement tgsi_util_get_inst_usage_mask properly
>     
>     All opcodes are handled.
>     
>     Reviewed-by: Nicolai Hähnle <nicolai.haehnle at amd.com>


Looks buggy indeed - for texture opcodes it tries to subtract the shadow coord
from dimension for dim_layer however the value from
tgsi_util_get_texture_coord_dim() never includes that in the first place. And
therefore dim_layer_shadow (which is used to determine the mask in this case)
would be wrong too (just XY instead of XYZ for 2d shadow texture).

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