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intel: compiler: vec4: add missing default 0 lod

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We set a similar default value for LOD in the fs backend for TXS/TXL.
Without this we end up generating invalid MOV with a null src.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: "17.2 17.1" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
(cherry picked from commit d3acc240d0)
This commit is contained in:
Lionel Landwerlin 2017-10-03 16:05:07 +01:00 • committed by Emil Velikov
parent cb72969d8b
commit 3315bb4f08
1 changed files with 9 additions and 0 deletions
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9
src/intel/compiler/brw_vec4_nir.cpp
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@ -2227,6 +2227,15 @@ vec4_visitor::nir_emit_texture(nir_tex_instr *instr)
}
}
/* TXS and TXL require a LOD but not everything we implement using those
* two opcodes provides one. Provide a default LOD of 0.
*/
if ((instr->op == nir_texop_txs ||
instr->op == nir_texop_txl) &&
lod.file == BAD_FILE) {
lod = brw_imm_ud(0u);
}
if (instr->op == nir_texop_txf_ms ||
instr->op == nir_texop_samples_identical) {
assert(coord_type != NULL);