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nir: Add a helper for determining the type of a texture source

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Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "12.0" <mesa-dev@lists.freedesktop.org>
This commit is contained in:
Jason Ekstrand
2016-05-03 20:18:50 -07:00
parent 3c0077a6ec
commit 09135cd55a
1 changed files with 44 additions and 0 deletions
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44
src/compiler/nir/nir.h
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@@ -1246,6 +1246,50 @@ nir_tex_instr_is_query(nir_tex_instr *instr)
}
}
static inline nir_alu_type
nir_tex_instr_src_type(nir_tex_instr *instr, unsigned src)
{
switch (instr->src[src].src_type) {
case nir_tex_src_coord:
switch (instr->op) {
case nir_texop_txf:
case nir_texop_txf_ms:
case nir_texop_txf_ms_mcs:
case nir_texop_samples_identical:
return nir_type_int;
default:
return nir_type_float;
}
case nir_tex_src_lod:
switch (instr->op) {
case nir_texop_txs:
case nir_texop_txf:
return nir_type_int;
default:
return nir_type_float;
}
case nir_tex_src_projector:
case nir_tex_src_comparitor:
case nir_tex_src_bias:
case nir_tex_src_ddx:
case nir_tex_src_ddy:
return nir_type_float;
case nir_tex_src_offset:
case nir_tex_src_ms_index:
case nir_tex_src_texture_offset:
case nir_tex_src_sampler_offset:
return nir_type_int;
default:
unreachable("Invalid texture source type");
}
}
static inline unsigned
nir_tex_instr_src_size(nir_tex_instr *instr, unsigned src)
{