mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
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cafec54c79
This reverts commit 38c7e40bc02578585cc56c3a2d016d0b06ade184.
Fixes: b625a573 ("fix")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32354>
120 lines
4.5 KiB
C
120 lines
4.5 KiB
C
/*
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* Copyright © 2020 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "anv_nir.h"
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#include "nir_builder.h"
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static bool
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lower_ubo_load_instr(nir_builder *b, nir_intrinsic_instr *load,
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UNUSED void *_data)
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{
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if (load->intrinsic != nir_intrinsic_load_global_constant_offset &&
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load->intrinsic != nir_intrinsic_load_global_constant_bounded)
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return false;
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b->cursor = nir_before_instr(&load->instr);
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nir_def *base_addr = load->src[0].ssa;
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nir_def *bound = NULL;
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if (load->intrinsic == nir_intrinsic_load_global_constant_bounded)
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bound = load->src[2].ssa;
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unsigned bit_size = load->def.bit_size;
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assert(bit_size >= 8 && bit_size % 8 == 0);
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unsigned byte_size = bit_size / 8;
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nir_def *val;
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if (!nir_src_is_divergent(&load->src[0]) && nir_src_is_const(load->src[1])) {
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uint32_t offset = nir_src_as_uint(load->src[1]);
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/* Things should be component-aligned. */
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assert(offset % byte_size == 0);
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assert(ANV_UBO_ALIGNMENT == 64);
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unsigned suboffset = offset % 64;
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uint64_t aligned_offset = offset - suboffset;
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/* Load two just in case we go over a 64B boundary */
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nir_def *data[2];
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for (unsigned i = 0; i < 2; i++) {
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nir_def *addr = nir_iadd_imm(b, base_addr, aligned_offset + i * 64);
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data[i] = nir_load_global_constant_uniform_block_intel(
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b, 16, 32, addr,
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.access = nir_intrinsic_access(load),
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.align_mul = 64);
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if (bound) {
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data[i] = nir_bcsel(b,
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nir_igt_imm(b, bound, aligned_offset + i * 64 + 63),
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data[i],
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nir_imm_int(b, 0));
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}
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}
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val = nir_extract_bits(b, data, 2, suboffset * 8,
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load->num_components, bit_size);
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} else {
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nir_def *offset = load->src[1].ssa;
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nir_def *addr = nir_iadd(b, base_addr, nir_u2u64(b, offset));
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if (bound) {
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nir_def *zero = nir_imm_zero(b, load->num_components, bit_size);
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unsigned load_size = byte_size * load->num_components;
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nir_def *in_bounds =
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nir_ilt(b, nir_iadd_imm(b, offset, load_size - 1), bound);
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nir_push_if(b, in_bounds);
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nir_def *load_val =
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nir_build_load_global_constant(b, load->def.num_components,
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load->def.bit_size, addr,
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.access = nir_intrinsic_access(load),
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.align_mul = nir_intrinsic_align_mul(load),
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.align_offset = nir_intrinsic_align_offset(load));
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nir_pop_if(b, NULL);
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val = nir_if_phi(b, load_val, zero);
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} else {
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val = nir_build_load_global_constant(b, load->def.num_components,
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load->def.bit_size, addr,
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.access = nir_intrinsic_access(load),
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.align_mul = nir_intrinsic_align_mul(load),
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.align_offset = nir_intrinsic_align_offset(load));
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}
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}
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nir_def_replace(&load->def, val);
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return true;
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}
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bool
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anv_nir_lower_ubo_loads(nir_shader *shader)
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{
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return nir_shader_intrinsics_pass(shader, lower_ubo_load_instr,
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nir_metadata_none,
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NULL);
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}
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