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nak: extract nir_intrinsic_cmat_load lowering into a function

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Reviewed-by: Mary Guillemard <mary@mary.zone>
Acked-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36363>
This commit is contained in:
Karol Herbst 2025-07-15 17:45:14 +02:00
parent 1d3f52f78f
commit 05dca16143
1 changed files with 45 additions and 40 deletions
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85
src/nouveau/compiler/nak_nir_lower_cmat.c
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@ -570,6 +570,50 @@ lower_cmat_convert(nir_builder *b, nir_intrinsic_instr *intr, nir_def *cmat,
return cmat;
}
static void
lower_cmat_load(nir_builder *b, nir_intrinsic_instr *intr)
{
const struct glsl_cmat_description desc = cmat_src_desc(intr->src[0]);
const unsigned length = get_cmat_length(desc);
const enum glsl_matrix_layout layout = nir_intrinsic_matrix_layout(intr);
nir_deref_instr *deref = nir_def_as_deref(intr->src[1].ssa);
nir_def *stride = intr->src[2].ssa;
nir_def *vars[NIR_MAX_VEC_COMPONENTS];
for (unsigned i = 0; i < length; ++i)
vars[i] = nir_undef(b, 1, glsl_base_type_bit_size(desc.element_type));
nir_def *lane_id = nir_load_subgroup_invocation(b);
for (unsigned idx = 0; idx < length; idx++) {
nir_def *col_offset;
nir_def *row_offset;
compute_matrix_offsets(b, desc, layout, lane_id, idx,
&col_offset, &row_offset);
row_offset = nir_imul(b, row_offset, stride);
col_offset = nir_u2uN(b, col_offset, deref->def.bit_size);
row_offset = nir_u2uN(b, row_offset, deref->def.bit_size);
nir_deref_instr *iter_deref =
nir_build_deref_ptr_as_array(b, deref, row_offset);
iter_deref = nir_build_deref_cast(
b, &iter_deref->def, deref->modes,
glsl_scalar_type(desc.element_type),
glsl_base_type_bit_size(desc.element_type) / 8);
iter_deref =
nir_build_deref_ptr_as_array(b, iter_deref, col_offset);
vars[idx] = nir_load_deref(b, iter_deref);
}
nir_def *mat = nir_vec(b, vars, length);
store_cmat_src(b, intr->src[0], mat);
}
static bool
lower_cmat_instr(nir_builder *b,
nir_instr *instr,
@ -607,46 +651,7 @@ lower_cmat_instr(nir_builder *b,
}
case nir_intrinsic_cmat_load: {
const struct glsl_cmat_description desc = cmat_src_desc(intr->src[0]);
const unsigned length = get_cmat_length(desc);
const enum glsl_matrix_layout layout = nir_intrinsic_matrix_layout(intr);
nir_deref_instr *deref =
nir_def_as_deref(intr->src[1].ssa);
nir_def *stride = intr->src[2].ssa;
nir_def *vars[NIR_MAX_VEC_COMPONENTS];
for (unsigned i = 0; i < length; ++i)
vars[i] = nir_undef(b, 1, glsl_base_type_bit_size(desc.element_type));
nir_def *lane_id = nir_load_subgroup_invocation(b);
for (unsigned idx = 0; idx < length; idx++) {
nir_def *col_offset;
nir_def *row_offset;
compute_matrix_offsets(b, desc, layout, lane_id, idx,
&col_offset, &row_offset);
row_offset = nir_imul(b, row_offset, stride);
col_offset = nir_u2uN(b, col_offset, deref->def.bit_size);
row_offset = nir_u2uN(b, row_offset, deref->def.bit_size);
nir_deref_instr *iter_deref =
nir_build_deref_ptr_as_array(b, deref, row_offset);
iter_deref = nir_build_deref_cast(
b, &iter_deref->def, deref->modes,
glsl_scalar_type(desc.element_type),
glsl_base_type_bit_size(desc.element_type) / 8);
iter_deref =
nir_build_deref_ptr_as_array(b, iter_deref, col_offset);
vars[idx] = nir_load_deref(b, iter_deref);
}
nir_def *mat = nir_vec(b, vars, length);
store_cmat_src(b, intr->src[0], mat);
lower_cmat_load(b, intr);
nir_instr_remove(instr);
return true;
}