195 lines
6.7 KiB
C
195 lines
6.7 KiB
C
/*
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* Copyright (C) 2020 Collabora Ltd.
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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 FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Authors (Collabora):
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* Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
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*/
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#include "pan_ir.h"
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#include "compiler/nir/nir_builder.h"
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/* TODO: ssbo_size */
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static int
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panfrost_sysval_for_ssbo(nir_intrinsic_instr *instr)
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{
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nir_src index = instr->src[0];
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assert(nir_src_is_const(index));
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uint32_t uindex = nir_src_as_uint(index);
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return PAN_SYSVAL(SSBO, uindex);
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}
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static int
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panfrost_sysval_for_sampler(nir_intrinsic_instr *instr)
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{
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/* TODO: indirect samplers !!! */
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nir_src index = instr->src[0];
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assert(nir_src_is_const(index));
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uint32_t uindex = nir_src_as_uint(index);
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return PAN_SYSVAL(SAMPLER, uindex);
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}
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static int
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panfrost_sysval_for_image_size(nir_intrinsic_instr *instr)
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{
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nir_src index = instr->src[0];
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assert(nir_src_is_const(index));
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bool is_array = nir_intrinsic_image_array(instr);
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uint32_t uindex = nir_src_as_uint(index);
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unsigned dim = nir_intrinsic_dest_components(instr) - is_array;
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return PAN_SYSVAL(IMAGE_SIZE, PAN_TXS_SYSVAL_ID(uindex, dim, is_array));
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}
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static unsigned
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panfrost_nir_sysval_for_intrinsic(nir_intrinsic_instr *instr)
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{
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switch (instr->intrinsic) {
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case nir_intrinsic_load_viewport_scale:
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return PAN_SYSVAL_VIEWPORT_SCALE;
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case nir_intrinsic_load_viewport_offset:
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return PAN_SYSVAL_VIEWPORT_OFFSET;
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case nir_intrinsic_load_num_workgroups:
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return PAN_SYSVAL_NUM_WORK_GROUPS;
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case nir_intrinsic_load_workgroup_size:
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return PAN_SYSVAL_LOCAL_GROUP_SIZE;
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case nir_intrinsic_load_work_dim:
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return PAN_SYSVAL_WORK_DIM;
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case nir_intrinsic_load_sample_positions_pan:
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return PAN_SYSVAL_SAMPLE_POSITIONS;
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case nir_intrinsic_load_first_vertex:
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case nir_intrinsic_load_base_vertex:
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case nir_intrinsic_load_base_instance:
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return PAN_SYSVAL_VERTEX_INSTANCE_OFFSETS;
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case nir_intrinsic_load_draw_id:
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return PAN_SYSVAL_DRAWID;
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case nir_intrinsic_load_ssbo_address:
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case nir_intrinsic_get_ssbo_size:
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return panfrost_sysval_for_ssbo(instr);
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case nir_intrinsic_load_xfb_address:
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return PAN_SYSVAL(XFB, nir_intrinsic_base(instr));
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case nir_intrinsic_load_num_vertices:
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return PAN_SYSVAL_NUM_VERTICES;
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case nir_intrinsic_load_sampler_lod_parameters_pan:
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return panfrost_sysval_for_sampler(instr);
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case nir_intrinsic_image_size:
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return panfrost_sysval_for_image_size(instr);
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case nir_intrinsic_load_blend_const_color_rgba:
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return PAN_SYSVAL_BLEND_CONSTANTS;
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default:
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return ~0;
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}
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}
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int
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panfrost_sysval_for_instr(nir_instr *instr, nir_dest *dest)
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{
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nir_intrinsic_instr *intr;
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nir_dest *dst = NULL;
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nir_tex_instr *tex;
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unsigned sysval = ~0;
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switch (instr->type) {
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case nir_instr_type_intrinsic:
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intr = nir_instr_as_intrinsic(instr);
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sysval = panfrost_nir_sysval_for_intrinsic(intr);
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dst = &intr->dest;
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break;
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case nir_instr_type_tex:
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tex = nir_instr_as_tex(instr);
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if (tex->op != nir_texop_txs)
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break;
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sysval = PAN_SYSVAL(TEXTURE_SIZE,
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PAN_TXS_SYSVAL_ID(tex->texture_index,
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nir_tex_instr_dest_size(tex) -
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(tex->is_array ? 1 : 0),
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tex->is_array));
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dst = &tex->dest;
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break;
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default:
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break;
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}
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if (dest && dst)
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*dest = *dst;
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return sysval;
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}
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static unsigned
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pan_add_sysval(struct hash_table_u64 *sysval_to_id,
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struct panfrost_sysvals *sysvals,
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int sysval, unsigned id)
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{
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assert(id < MAX_SYSVAL_COUNT);
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_mesa_hash_table_u64_insert(sysval_to_id, sysval, (void *) ((uintptr_t) id + 1));
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sysvals->sysvals[id] = sysval;
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return id;
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}
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unsigned
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pan_lookup_sysval(struct hash_table_u64 *sysval_to_id,
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struct panfrost_sysvals *sysvals,
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int sysval)
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{
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/* Try to lookup */
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void *cached = _mesa_hash_table_u64_search(sysval_to_id, sysval);
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if (cached) {
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unsigned id = ((uintptr_t) cached) - 1;
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assert(id < MAX_SYSVAL_COUNT);
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assert(sysvals->sysvals[id] == sysval);
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return id;
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}
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/* Else assign */
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return pan_add_sysval(sysval_to_id, sysvals, sysval,
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sysvals->sysval_count++);
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}
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struct hash_table_u64 *
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panfrost_init_sysvals(struct panfrost_sysvals *sysvals,
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struct panfrost_sysvals *fixed_sysvals,
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void *memctx)
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{
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memset(sysvals, 0, sizeof(*sysvals));
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struct hash_table_u64 *sysval_to_id =
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_mesa_hash_table_u64_create(memctx);
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if (fixed_sysvals) {
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for (unsigned i = 0; i < fixed_sysvals->sysval_count; i++) {
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if (!fixed_sysvals->sysvals[i])
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continue;
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pan_add_sysval(sysval_to_id, sysvals,
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fixed_sysvals->sysvals[i], i);
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}
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sysvals->sysval_count = fixed_sysvals->sysval_count;
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}
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return sysval_to_id;
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}
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