125 lines
4.6 KiB
C
125 lines
4.6 KiB
C
/*
|
|
* Copyright © 2020 Intel Corporation
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include "anv_nir.h"
|
|
#include "nir_builder.h"
|
|
|
|
static bool
|
|
lower_ubo_load_instr(nir_builder *b, nir_instr *instr, UNUSED void *_data)
|
|
{
|
|
if (instr->type != nir_instr_type_intrinsic)
|
|
return false;
|
|
|
|
nir_intrinsic_instr *load = nir_instr_as_intrinsic(instr);
|
|
if (load->intrinsic != nir_intrinsic_load_global_constant_offset &&
|
|
load->intrinsic != nir_intrinsic_load_global_constant_bounded)
|
|
return false;
|
|
|
|
b->cursor = nir_before_instr(instr);
|
|
|
|
nir_ssa_def *base_addr = load->src[0].ssa;
|
|
nir_ssa_def *bound = NULL;
|
|
if (load->intrinsic == nir_intrinsic_load_global_constant_bounded)
|
|
bound = load->src[2].ssa;
|
|
|
|
unsigned bit_size = load->dest.ssa.bit_size;
|
|
assert(bit_size >= 8 && bit_size % 8 == 0);
|
|
unsigned byte_size = bit_size / 8;
|
|
|
|
nir_ssa_def *val;
|
|
if (nir_src_is_const(load->src[1])) {
|
|
uint32_t offset = nir_src_as_uint(load->src[1]);
|
|
|
|
/* Things should be component-aligned. */
|
|
assert(offset % byte_size == 0);
|
|
|
|
assert(ANV_UBO_ALIGNMENT == 64);
|
|
|
|
unsigned suboffset = offset % 64;
|
|
uint64_t aligned_offset = offset - suboffset;
|
|
|
|
/* Load two just in case we go over a 64B boundary */
|
|
nir_ssa_def *data[2];
|
|
for (unsigned i = 0; i < 2; i++) {
|
|
nir_ssa_def *pred;
|
|
if (bound) {
|
|
pred = nir_ilt(b, nir_imm_int(b, aligned_offset + i * 64 + 63),
|
|
bound);
|
|
} else {
|
|
pred = nir_imm_true(b);
|
|
}
|
|
|
|
nir_ssa_def *addr = nir_iadd_imm(b, base_addr,
|
|
aligned_offset + i * 64);
|
|
|
|
data[i] = nir_load_global_const_block_intel(b, 16, addr, pred);
|
|
}
|
|
|
|
val = nir_extract_bits(b, data, 2, suboffset * 8,
|
|
load->num_components, bit_size);
|
|
} else {
|
|
nir_ssa_def *offset = load->src[1].ssa;
|
|
nir_ssa_def *addr = nir_iadd(b, base_addr, nir_u2u64(b, offset));
|
|
|
|
if (bound) {
|
|
nir_ssa_def *zero = nir_imm_zero(b, load->num_components, bit_size);
|
|
|
|
unsigned load_size = byte_size * load->num_components;
|
|
nir_ssa_def *in_bounds =
|
|
nir_ilt(b, nir_iadd_imm(b, offset, load_size - 1), bound);
|
|
|
|
nir_push_if(b, in_bounds);
|
|
|
|
nir_ssa_def *load_val =
|
|
nir_build_load_global_constant(b, load->dest.ssa.num_components,
|
|
load->dest.ssa.bit_size, addr,
|
|
.access = nir_intrinsic_access(load),
|
|
.align_mul = nir_intrinsic_align_mul(load),
|
|
.align_offset = nir_intrinsic_align_offset(load));
|
|
|
|
nir_pop_if(b, NULL);
|
|
|
|
val = nir_if_phi(b, load_val, zero);
|
|
} else {
|
|
val = nir_build_load_global_constant(b, load->dest.ssa.num_components,
|
|
load->dest.ssa.bit_size, addr,
|
|
.access = nir_intrinsic_access(load),
|
|
.align_mul = nir_intrinsic_align_mul(load),
|
|
.align_offset = nir_intrinsic_align_offset(load));
|
|
}
|
|
}
|
|
|
|
nir_ssa_def_rewrite_uses(&load->dest.ssa, val);
|
|
nir_instr_remove(&load->instr);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
anv_nir_lower_ubo_loads(nir_shader *shader)
|
|
{
|
|
return nir_shader_instructions_pass(shader, lower_ubo_load_instr,
|
|
nir_metadata_none,
|
|
NULL);
|
|
}
|