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brw: Implement convert_cmat_intel intrinsic

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Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35616>
This commit is contained in:
Matt Turner 2025-06-09 16:05:19 -04:00 • committed by Marge Bot
parent 102d7409ef
commit 41cd196886
1 changed files with 48 additions and 0 deletions
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48
src/intel/compiler/brw_from_nir.cpp
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@ -31,6 +31,7 @@
#include "dev/intel_debug.h"
#include "util/u_math.h"
#include "util/bitscan.h"
#include "compiler/glsl_types.h"
#include <vector>
@ -4843,6 +4844,53 @@ brw_from_nir_emit_cs_intrinsic(nir_to_brw_state &ntb,
break;
}
case nir_intrinsic_convert_cmat_intel: {
struct glsl_cmat_description dst_cmat_desc =
nir_intrinsic_dst_cmat_desc(instr);
struct glsl_cmat_description src_cmat_desc =
nir_intrinsic_src_cmat_desc(instr);
brw_reg_type dst_type =
brw_type_for_base_type((enum glsl_base_type)dst_cmat_desc.element_type);
brw_reg_type src_type =
brw_type_for_base_type((enum glsl_base_type)src_cmat_desc.element_type);
const unsigned dst_element_bits =
brw_type_size_bits(dst_type);
const unsigned src_element_bits =
brw_type_size_bits(src_type);
const unsigned element_bits = 32;
const unsigned src_packing_factor = element_bits / src_element_bits;
const unsigned src_components = nir_src_num_components(instr->src[0]);
const unsigned elems = src_components * src_packing_factor;
brw_builder bldn = bld.exec_all();
const brw_reg src = retype(get_nir_src(ntb, instr->src[0], 0), src_type);
const brw_reg dst = retype(dest, dst_type);
assert(dst_cmat_desc.use == src_cmat_desc.use);
switch (src_cmat_desc.use) {
case GLSL_CMAT_USE_B:
assert(dst_element_bits == src_element_bits);
FALLTHROUGH;
case GLSL_CMAT_USE_A:
case GLSL_CMAT_USE_ACCUMULATOR: {
const unsigned width = bldn.dispatch_width();
for (unsigned c = 0; c < elems; c++) {
bldn.MOV(suboffset(dst, c * width),
suboffset(src, c * width));
}
break;
}
default:
unreachable("not reached");
}
break;
}
default:
brw_from_nir_emit_intrinsic(ntb, bld, instr);
break;