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nir/spirv: Restrict the number of channels in texture coordinates

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Some SPIR-V texturing instructions pack more than the texture coordinate
into the coordinate source.  We need to mask off the unused channels.

Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
This commit is contained in:
Jason Ekstrand 2017-03-02 19:03:01 -08:00
parent 3c312be7b3
commit fffa4111df
1 changed files with 2 additions and 1 deletions
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3
src/compiler/spirv/spirv_to_nir.c
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@ -1568,7 +1568,8 @@ vtn_handle_texture(struct vtn_builder *b, SpvOp opcode,
coord_components++;
coord = vtn_ssa_value(b, w[idx++])->def;
p->src = nir_src_for_ssa(coord);
p->src = nir_src_for_ssa(nir_channels(&b->nb, coord,
(1 << coord_components) - 1));
p->src_type = nir_tex_src_coord;
p++;
break;