i965: Rewrite ir_tex to ir_txl with lod 0 for vertex shaders

The ir_tex opcode turns into a sample or sample_c message, which will try to
compute derivatives to determine the lod. This produces garbage for
non-fragment shaders where the sample coordinates don't correspond to
subspans.

We fix this by rewriting the opcode from ir_tex to ir_txl and setting the
lod to 0.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89457
Cc: "10.5" <[email protected]>
Signed-off-by: Kristian Høgsberg <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>

0 files changed, 0 insertions, 0 deletions