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/*
* Copyright (C) 2020 Collabora, Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors (Collabora):
* Italo Nicola <italonicola@collabora.com>
*/
#include "compiler/nir/nir.h"
#include "compiler/nir/nir_builder.h"
#include "midgard_nir.h"
static bool
nir_lower_image_bitsize(nir_builder *b, nir_instr *instr, UNUSED void *data)
{
if (instr->type != nir_instr_type_intrinsic)
return false;
nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr);
switch (intr->intrinsic) {
case nir_intrinsic_image_load:
case nir_intrinsic_image_store:
case nir_intrinsic_image_atomic_add:
case nir_intrinsic_image_atomic_and:
case nir_intrinsic_image_atomic_comp_swap:
case nir_intrinsic_image_atomic_exchange:
case nir_intrinsic_image_atomic_imax:
case nir_intrinsic_image_atomic_imin:
case nir_intrinsic_image_atomic_or:
case nir_intrinsic_image_atomic_umax:
case nir_intrinsic_image_atomic_umin:
case nir_intrinsic_image_atomic_xor:
break;
default:
return false;
}
if (nir_src_bit_size(intr->src[1]) == 16)
return false;
b->cursor = nir_before_instr(instr);
nir_ssa_def *coord =
nir_ssa_for_src(b, intr->src[1], nir_src_num_components(intr->src[1]));
nir_ssa_def *coord16 = nir_u2u16(b, coord);
nir_instr_rewrite_src(instr, &intr->src[1], nir_src_for_ssa(coord16));
return true;
}
bool
midgard_nir_lower_image_bitsize(nir_shader *shader)
{
return nir_shader_instructions_pass(
shader, nir_lower_image_bitsize,
nir_metadata_block_index | nir_metadata_dominance, NULL);
}
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