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nir: Add a nir_tex_instr_has_implicit_derivatives helper

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Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Jason Ekstrand
2019-06-07 17:58:15 -05:00
parent 7a98c7804c
commit 0e6cb481fa
2 changed files with 14 additions and 11 deletions
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13
src/compiler/nir/nir.h
View File

@@ -1783,6 +1783,19 @@ nir_tex_instr_is_query(const nir_tex_instr *instr)
}
}
static inline bool
nir_tex_instr_has_implicit_derivative(const nir_tex_instr *instr)
{
switch (instr->op) {
case nir_texop_tex:
case nir_texop_txb:
case nir_texop_lod:
return true;
default:
return false;
}
}
static inline nir_alu_type
nir_tex_instr_src_type(const nir_tex_instr *instr, unsigned src)
{

12
src/compiler/nir/nir_opt_gcm.c
View File

@@ -133,20 +133,10 @@ gcm_pin_instructions_block(nir_block *block, struct gcm_state *state)
break;
case nir_instr_type_tex:
switch (nir_instr_as_tex(instr)->op) {
case nir_texop_tex:
case nir_texop_txb:
case nir_texop_lod:
/* These two take implicit derivatives so they need to be pinned */
if (nir_tex_instr_has_implicit_derivative(nir_instr_as_tex(instr)))
instr->pass_flags = GCM_INSTR_PINNED;
break;
default:
instr->pass_flags = 0;
break;
}
break;
case nir_instr_type_load_const:
instr->pass_flags = 0;
break;