952 lines
40 KiB
C
952 lines
40 KiB
C
/*
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* Copyright © 2022 Konstantin Seurer
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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 "nir/nir.h"
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#include "nir/nir_builder.h"
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#include "util/hash_table.h"
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#include "radv_acceleration_structure.h"
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#include "radv_private.h"
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#include "radv_rt_common.h"
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#include "radv_shader.h"
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typedef struct {
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nir_variable *variable;
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unsigned array_length;
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} rq_variable;
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static rq_variable *
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rq_variable_create(nir_shader *shader, nir_function_impl *impl, unsigned array_length,
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const struct glsl_type *type, const char *name)
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{
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rq_variable *result = ralloc(shader ? (void *)shader : (void *)impl, rq_variable);
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result->array_length = array_length;
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const struct glsl_type *variable_type = type;
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if (array_length != 1)
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variable_type = glsl_array_type(type, array_length, glsl_get_explicit_stride(type));
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if (shader) {
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result->variable = nir_variable_create(shader, nir_var_shader_temp, variable_type, name);
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} else {
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result->variable = nir_local_variable_create(impl, variable_type, name);
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}
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return result;
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}
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static nir_ssa_def *
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nir_load_array(nir_builder *b, nir_variable *array, nir_ssa_def *index)
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{
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return nir_load_deref(b, nir_build_deref_array(b, nir_build_deref_var(b, array), index));
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}
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static void
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nir_store_array(nir_builder *b, nir_variable *array, nir_ssa_def *index, nir_ssa_def *value,
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unsigned writemask)
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{
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nir_store_deref(b, nir_build_deref_array(b, nir_build_deref_var(b, array), index), value,
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writemask);
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}
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static nir_ssa_def *
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rq_load_var(nir_builder *b, nir_ssa_def *index, rq_variable *var)
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{
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if (var->array_length == 1)
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return nir_load_var(b, var->variable);
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return nir_load_array(b, var->variable, index);
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}
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static void
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rq_store_var(nir_builder *b, nir_ssa_def *index, rq_variable *var, nir_ssa_def *value,
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unsigned writemask)
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{
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if (var->array_length == 1) {
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nir_store_var(b, var->variable, value, writemask);
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} else {
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nir_store_array(b, var->variable, index, value, writemask);
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}
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}
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static void
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rq_copy_var(nir_builder *b, nir_ssa_def *index, rq_variable *dst, rq_variable *src, unsigned mask)
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{
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rq_store_var(b, index, dst, rq_load_var(b, index, src), mask);
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}
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static nir_ssa_def *
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rq_load_array(nir_builder *b, nir_ssa_def *index, rq_variable *var, nir_ssa_def *array_index)
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{
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if (var->array_length == 1)
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return nir_load_array(b, var->variable, array_index);
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return nir_load_deref(
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b,
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nir_build_deref_array(
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b, nir_build_deref_array(b, nir_build_deref_var(b, var->variable), index), array_index));
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}
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static void
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rq_store_array(nir_builder *b, nir_ssa_def *index, rq_variable *var, nir_ssa_def *array_index,
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nir_ssa_def *value, unsigned writemask)
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{
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if (var->array_length == 1) {
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nir_store_array(b, var->variable, array_index, value, writemask);
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} else {
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nir_store_deref(
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b,
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nir_build_deref_array(
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b, nir_build_deref_array(b, nir_build_deref_var(b, var->variable), index), array_index),
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value, writemask);
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}
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}
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struct ray_query_traversal_vars {
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rq_variable *origin;
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rq_variable *direction;
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rq_variable *inv_dir;
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rq_variable *bvh_base;
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rq_variable *stack;
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rq_variable *top_stack;
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};
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struct ray_query_intersection_vars {
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rq_variable *primitive_id;
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rq_variable *geometry_id_and_flags;
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rq_variable *instance_id;
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rq_variable *instance_addr;
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rq_variable *intersection_type;
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rq_variable *opaque;
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rq_variable *frontface;
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rq_variable *custom_instance_and_mask;
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rq_variable *sbt_offset_and_flags;
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rq_variable *barycentrics;
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rq_variable *t;
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};
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struct ray_query_vars {
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rq_variable *accel_struct;
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rq_variable *flags;
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rq_variable *cull_mask;
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rq_variable *origin;
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rq_variable *tmin;
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rq_variable *direction;
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rq_variable *incomplete;
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struct ray_query_intersection_vars closest;
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struct ray_query_intersection_vars candidate;
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struct ray_query_traversal_vars trav;
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rq_variable *stack;
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};
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#define VAR_NAME(name) \
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strcat(strcpy(ralloc_size(impl, strlen(base_name) + strlen(name) + 1), base_name), name)
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static struct ray_query_traversal_vars
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init_ray_query_traversal_vars(nir_shader *shader, nir_function_impl *impl, unsigned array_length,
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const char *base_name)
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{
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struct ray_query_traversal_vars result;
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const struct glsl_type *vec3_type = glsl_vector_type(GLSL_TYPE_FLOAT, 3);
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result.origin = rq_variable_create(shader, impl, array_length, vec3_type, VAR_NAME("_origin"));
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result.direction =
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rq_variable_create(shader, impl, array_length, vec3_type, VAR_NAME("_direction"));
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result.inv_dir = rq_variable_create(shader, impl, array_length, vec3_type, VAR_NAME("_inv_dir"));
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result.bvh_base =
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rq_variable_create(shader, impl, array_length, glsl_uint64_t_type(), VAR_NAME("_bvh_base"));
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result.stack =
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rq_variable_create(shader, impl, array_length, glsl_uint_type(), VAR_NAME("_stack"));
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result.top_stack =
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rq_variable_create(shader, impl, array_length, glsl_uint_type(), VAR_NAME("_top_stack"));
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return result;
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}
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static struct ray_query_intersection_vars
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init_ray_query_intersection_vars(nir_shader *shader, nir_function_impl *impl, unsigned array_length,
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const char *base_name)
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{
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struct ray_query_intersection_vars result;
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const struct glsl_type *vec2_type = glsl_vector_type(GLSL_TYPE_FLOAT, 2);
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result.primitive_id =
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rq_variable_create(shader, impl, array_length, glsl_uint_type(), VAR_NAME("_primitive_id"));
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result.geometry_id_and_flags = rq_variable_create(shader, impl, array_length, glsl_uint_type(),
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VAR_NAME("_geometry_id_and_flags"));
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result.instance_id =
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rq_variable_create(shader, impl, array_length, glsl_uint_type(), VAR_NAME("_instance_id"));
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result.instance_addr = rq_variable_create(shader, impl, array_length, glsl_uint64_t_type(),
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VAR_NAME("_instance_addr"));
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result.intersection_type = rq_variable_create(shader, impl, array_length, glsl_uint_type(),
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VAR_NAME("_intersection_type"));
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result.opaque =
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rq_variable_create(shader, impl, array_length, glsl_bool_type(), VAR_NAME("_opaque"));
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result.frontface =
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rq_variable_create(shader, impl, array_length, glsl_bool_type(), VAR_NAME("_frontface"));
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result.custom_instance_and_mask = rq_variable_create(
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shader, impl, array_length, glsl_uint_type(), VAR_NAME("_custom_instance_and_mask"));
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result.sbt_offset_and_flags = rq_variable_create(shader, impl, array_length, glsl_uint_type(),
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VAR_NAME("_sbt_offset_and_flags"));
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result.barycentrics =
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rq_variable_create(shader, impl, array_length, vec2_type, VAR_NAME("_barycentrics"));
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result.t = rq_variable_create(shader, impl, array_length, glsl_float_type(), VAR_NAME("_t"));
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return result;
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}
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static void
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init_ray_query_vars(nir_shader *shader, nir_function_impl *impl, unsigned array_length,
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struct ray_query_vars *dst, const char *base_name)
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{
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const struct glsl_type *vec3_type = glsl_vector_type(GLSL_TYPE_FLOAT, 3);
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dst->accel_struct = rq_variable_create(shader, impl, array_length, glsl_uint64_t_type(),
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VAR_NAME("_accel_struct"));
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dst->flags =
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rq_variable_create(shader, impl, array_length, glsl_uint_type(), VAR_NAME("_flags"));
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dst->cull_mask =
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rq_variable_create(shader, impl, array_length, glsl_uint_type(), VAR_NAME("_cull_mask"));
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dst->origin = rq_variable_create(shader, impl, array_length, vec3_type, VAR_NAME("_origin"));
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dst->tmin = rq_variable_create(shader, impl, array_length, glsl_float_type(), VAR_NAME("_tmin"));
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dst->direction =
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rq_variable_create(shader, impl, array_length, vec3_type, VAR_NAME("_direction"));
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dst->incomplete =
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rq_variable_create(shader, impl, array_length, glsl_bool_type(), VAR_NAME("_incomplete"));
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dst->closest =
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init_ray_query_intersection_vars(shader, impl, array_length, VAR_NAME("_closest"));
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dst->candidate =
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init_ray_query_intersection_vars(shader, impl, array_length, VAR_NAME("_candidate"));
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dst->trav = init_ray_query_traversal_vars(shader, impl, array_length, VAR_NAME("_top"));
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dst->stack = rq_variable_create(shader, impl, array_length,
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glsl_array_type(glsl_uint_type(), MAX_STACK_ENTRY_COUNT,
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glsl_get_explicit_stride(glsl_uint_type())),
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VAR_NAME("_stack"));
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}
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#undef VAR_NAME
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static void
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lower_ray_query(nir_shader *shader, nir_function_impl *impl, nir_variable *ray_query,
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struct hash_table *ht)
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{
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struct ray_query_vars *vars = ralloc(impl, struct ray_query_vars);
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unsigned array_length = 1;
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if (glsl_type_is_array(ray_query->type))
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array_length = glsl_get_length(ray_query->type);
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init_ray_query_vars(shader, impl, array_length, vars,
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ray_query->name == NULL ? "" : ray_query->name);
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_mesa_hash_table_insert(ht, ray_query, vars);
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}
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static void
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copy_candidate_to_closest(nir_builder *b, nir_ssa_def *index, struct ray_query_vars *vars)
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{
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rq_copy_var(b, index, vars->closest.barycentrics, vars->candidate.barycentrics, 0x3);
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rq_copy_var(b, index, vars->closest.custom_instance_and_mask,
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vars->candidate.custom_instance_and_mask, 0x1);
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rq_copy_var(b, index, vars->closest.geometry_id_and_flags, vars->candidate.geometry_id_and_flags,
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0x1);
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rq_copy_var(b, index, vars->closest.instance_addr, vars->candidate.instance_addr, 0x1);
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rq_copy_var(b, index, vars->closest.instance_id, vars->candidate.instance_id, 0x1);
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rq_copy_var(b, index, vars->closest.intersection_type, vars->candidate.intersection_type, 0x1);
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rq_copy_var(b, index, vars->closest.opaque, vars->candidate.opaque, 0x1);
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rq_copy_var(b, index, vars->closest.frontface, vars->candidate.frontface, 0x1);
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rq_copy_var(b, index, vars->closest.sbt_offset_and_flags, vars->candidate.sbt_offset_and_flags,
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0x1);
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rq_copy_var(b, index, vars->closest.primitive_id, vars->candidate.primitive_id, 0x1);
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rq_copy_var(b, index, vars->closest.t, vars->candidate.t, 0x1);
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}
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static void
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insert_terminate_on_first_hit(nir_builder *b, nir_ssa_def *index, struct ray_query_vars *vars,
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bool break_on_terminate)
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{
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nir_ssa_def *terminate_on_first_hit =
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nir_test_mask(b, rq_load_var(b, index, vars->flags), SpvRayFlagsTerminateOnFirstHitKHRMask);
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nir_push_if(b, terminate_on_first_hit);
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{
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rq_store_var(b, index, vars->incomplete, nir_imm_bool(b, false), 0x1);
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if (break_on_terminate)
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nir_jump(b, nir_jump_break);
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}
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nir_pop_if(b, NULL);
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}
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static void
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lower_rq_confirm_intersection(nir_builder *b, nir_ssa_def *index, nir_intrinsic_instr *instr,
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struct ray_query_vars *vars)
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{
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copy_candidate_to_closest(b, index, vars);
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insert_terminate_on_first_hit(b, index, vars, false);
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}
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static void
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lower_rq_generate_intersection(nir_builder *b, nir_ssa_def *index, nir_intrinsic_instr *instr,
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struct ray_query_vars *vars)
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{
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nir_push_if(b, nir_iand(b, nir_fge(b, rq_load_var(b, index, vars->closest.t), instr->src[1].ssa),
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nir_fge(b, instr->src[1].ssa, rq_load_var(b, index, vars->tmin))));
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{
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copy_candidate_to_closest(b, index, vars);
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insert_terminate_on_first_hit(b, index, vars, false);
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rq_store_var(b, index, vars->closest.t, instr->src[1].ssa, 0x1);
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}
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nir_pop_if(b, NULL);
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}
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enum rq_intersection_type {
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intersection_type_none,
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intersection_type_triangle,
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intersection_type_aabb
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};
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static void
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lower_rq_initialize(nir_builder *b, nir_ssa_def *index, nir_intrinsic_instr *instr,
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struct ray_query_vars *vars)
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{
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rq_store_var(b, index, vars->accel_struct, instr->src[1].ssa, 0x1);
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rq_store_var(b, index, vars->flags, instr->src[2].ssa, 0x1);
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rq_store_var(b, index, vars->cull_mask, nir_iand_imm(b, instr->src[3].ssa, 0xff), 0x1);
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rq_store_var(b, index, vars->origin, instr->src[4].ssa, 0x7);
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rq_store_var(b, index, vars->trav.origin, instr->src[4].ssa, 0x7);
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rq_store_var(b, index, vars->tmin, instr->src[5].ssa, 0x1);
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rq_store_var(b, index, vars->direction, instr->src[6].ssa, 0x7);
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rq_store_var(b, index, vars->trav.direction, instr->src[6].ssa, 0x7);
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nir_ssa_def *vec3ones = nir_channels(b, nir_imm_vec4(b, 1.0, 1.0, 1.0, 1.0), 0x7);
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rq_store_var(b, index, vars->trav.inv_dir, nir_fdiv(b, vec3ones, instr->src[6].ssa), 0x7);
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rq_store_var(b, index, vars->closest.t, instr->src[7].ssa, 0x1);
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rq_store_var(b, index, vars->closest.intersection_type, nir_imm_int(b, intersection_type_none),
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0x1);
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nir_ssa_def *accel_struct = rq_load_var(b, index, vars->accel_struct);
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nir_push_if(b, nir_ine_imm(b, accel_struct, 0));
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{
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rq_store_var(b, index, vars->trav.bvh_base, build_addr_to_node(b, accel_struct), 1);
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nir_ssa_def *bvh_root =
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nir_build_load_global(b, 1, 32, accel_struct, .access = ACCESS_NON_WRITEABLE,
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.align_mul = 64, .align_offset = 0);
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rq_store_var(b, index, vars->trav.stack, nir_imm_int(b, 1), 0x1);
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rq_store_array(b, index, vars->stack, nir_imm_int(b, 0), bvh_root, 0x1);
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rq_store_var(b, index, vars->trav.top_stack, nir_imm_int(b, 0), 1);
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rq_store_var(b, index, vars->incomplete, nir_imm_bool(b, true), 0x1);
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}
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nir_push_else(b, NULL);
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{
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rq_store_var(b, index, vars->incomplete, nir_imm_bool(b, false), 0x1);
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}
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nir_pop_if(b, NULL);
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}
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static nir_ssa_def *
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lower_rq_load(nir_builder *b, nir_ssa_def *index, struct ray_query_vars *vars,
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nir_ssa_def *committed, nir_ray_query_value value, unsigned column)
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{
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switch (value) {
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case nir_ray_query_value_flags:
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return rq_load_var(b, index, vars->flags);
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case nir_ray_query_value_intersection_barycentrics:
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return nir_bcsel(b, committed, rq_load_var(b, index, vars->closest.barycentrics),
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rq_load_var(b, index, vars->candidate.barycentrics));
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case nir_ray_query_value_intersection_candidate_aabb_opaque:
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return nir_iand(b, rq_load_var(b, index, vars->candidate.opaque),
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nir_ieq_imm(b, rq_load_var(b, index, vars->candidate.intersection_type),
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intersection_type_aabb));
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case nir_ray_query_value_intersection_front_face:
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return nir_bcsel(b, committed, rq_load_var(b, index, vars->closest.frontface),
|
|
rq_load_var(b, index, vars->candidate.frontface));
|
|
case nir_ray_query_value_intersection_geometry_index:
|
|
return nir_iand_imm(
|
|
b,
|
|
nir_bcsel(b, committed, rq_load_var(b, index, vars->closest.geometry_id_and_flags),
|
|
rq_load_var(b, index, vars->candidate.geometry_id_and_flags)),
|
|
0xFFFFFF);
|
|
case nir_ray_query_value_intersection_instance_custom_index:
|
|
return nir_iand_imm(
|
|
b,
|
|
nir_bcsel(b, committed, rq_load_var(b, index, vars->closest.custom_instance_and_mask),
|
|
rq_load_var(b, index, vars->candidate.custom_instance_and_mask)),
|
|
0xFFFFFF);
|
|
case nir_ray_query_value_intersection_instance_id:
|
|
return nir_bcsel(b, committed, rq_load_var(b, index, vars->closest.instance_id),
|
|
rq_load_var(b, index, vars->candidate.instance_id));
|
|
case nir_ray_query_value_intersection_instance_sbt_index:
|
|
return nir_iand_imm(
|
|
b,
|
|
nir_bcsel(b, committed, rq_load_var(b, index, vars->closest.sbt_offset_and_flags),
|
|
rq_load_var(b, index, vars->candidate.sbt_offset_and_flags)),
|
|
0xFFFFFF);
|
|
case nir_ray_query_value_intersection_object_ray_direction: {
|
|
nir_ssa_def *instance_node_addr =
|
|
nir_bcsel(b, committed, rq_load_var(b, index, vars->closest.instance_addr),
|
|
rq_load_var(b, index, vars->candidate.instance_addr));
|
|
nir_ssa_def *wto_matrix[3];
|
|
nir_build_wto_matrix_load(b, instance_node_addr, wto_matrix);
|
|
return nir_build_vec3_mat_mult(b, rq_load_var(b, index, vars->direction), wto_matrix, false);
|
|
}
|
|
case nir_ray_query_value_intersection_object_ray_origin: {
|
|
nir_ssa_def *instance_node_addr =
|
|
nir_bcsel(b, committed, rq_load_var(b, index, vars->closest.instance_addr),
|
|
rq_load_var(b, index, vars->candidate.instance_addr));
|
|
nir_ssa_def *wto_matrix[] = {
|
|
nir_build_load_global(b, 4, 32, nir_iadd_imm(b, instance_node_addr, 16), .align_mul = 64,
|
|
.align_offset = 16),
|
|
nir_build_load_global(b, 4, 32, nir_iadd_imm(b, instance_node_addr, 32), .align_mul = 64,
|
|
.align_offset = 32),
|
|
nir_build_load_global(b, 4, 32, nir_iadd_imm(b, instance_node_addr, 48), .align_mul = 64,
|
|
.align_offset = 48)};
|
|
return nir_build_vec3_mat_mult_pre(b, rq_load_var(b, index, vars->origin), wto_matrix);
|
|
}
|
|
case nir_ray_query_value_intersection_object_to_world: {
|
|
nir_ssa_def *instance_node_addr =
|
|
nir_bcsel(b, committed, rq_load_var(b, index, vars->closest.instance_addr),
|
|
rq_load_var(b, index, vars->candidate.instance_addr));
|
|
|
|
if (column == 3) {
|
|
nir_ssa_def *wto_matrix[3];
|
|
nir_build_wto_matrix_load(b, instance_node_addr, wto_matrix);
|
|
|
|
nir_ssa_def *vals[3];
|
|
for (unsigned i = 0; i < 3; ++i)
|
|
vals[i] = nir_channel(b, wto_matrix[i], column);
|
|
|
|
return nir_vec(b, vals, 3);
|
|
}
|
|
|
|
return nir_build_load_global(b, 3, 32, nir_iadd_imm(b, instance_node_addr, 92 + column * 12));
|
|
}
|
|
case nir_ray_query_value_intersection_primitive_index:
|
|
return nir_bcsel(b, committed, rq_load_var(b, index, vars->closest.primitive_id),
|
|
rq_load_var(b, index, vars->candidate.primitive_id));
|
|
case nir_ray_query_value_intersection_t:
|
|
return nir_bcsel(b, committed, rq_load_var(b, index, vars->closest.t),
|
|
rq_load_var(b, index, vars->candidate.t));
|
|
case nir_ray_query_value_intersection_type:
|
|
return nir_bcsel(
|
|
b, committed, rq_load_var(b, index, vars->closest.intersection_type),
|
|
nir_iadd_imm(b, rq_load_var(b, index, vars->candidate.intersection_type), -1));
|
|
case nir_ray_query_value_intersection_world_to_object: {
|
|
nir_ssa_def *instance_node_addr =
|
|
nir_bcsel(b, committed, rq_load_var(b, index, vars->closest.instance_addr),
|
|
rq_load_var(b, index, vars->candidate.instance_addr));
|
|
|
|
nir_ssa_def *wto_matrix[3];
|
|
nir_build_wto_matrix_load(b, instance_node_addr, wto_matrix);
|
|
|
|
nir_ssa_def *vals[3];
|
|
for (unsigned i = 0; i < 3; ++i)
|
|
vals[i] = nir_channel(b, wto_matrix[i], column);
|
|
|
|
if (column == 3)
|
|
return nir_fneg(b, nir_build_vec3_mat_mult(b, nir_vec(b, vals, 3), wto_matrix, false));
|
|
|
|
return nir_vec(b, vals, 3);
|
|
}
|
|
case nir_ray_query_value_tmin:
|
|
return rq_load_var(b, index, vars->tmin);
|
|
case nir_ray_query_value_world_ray_direction:
|
|
return rq_load_var(b, index, vars->direction);
|
|
case nir_ray_query_value_world_ray_origin:
|
|
return rq_load_var(b, index, vars->origin);
|
|
default:
|
|
unreachable("Invalid nir_ray_query_value!");
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
insert_traversal_triangle_case(struct radv_device *device, nir_builder *b, nir_ssa_def *index,
|
|
nir_ssa_def *result, struct ray_query_vars *vars,
|
|
nir_ssa_def *bvh_node)
|
|
{
|
|
nir_ssa_def *dist = nir_channel(b, result, 0);
|
|
nir_ssa_def *div = nir_channel(b, result, 1);
|
|
dist = nir_fdiv(b, dist, div);
|
|
nir_ssa_def *frontface = nir_flt(b, nir_imm_float(b, 0), div);
|
|
nir_ssa_def *switch_ccw =
|
|
nir_test_mask(b, rq_load_var(b, index, vars->candidate.sbt_offset_and_flags),
|
|
VK_GEOMETRY_INSTANCE_TRIANGLE_FLIP_FACING_BIT_KHR << 24);
|
|
frontface = nir_ixor(b, frontface, switch_ccw);
|
|
rq_store_var(b, index, vars->candidate.frontface, frontface, 0x1);
|
|
|
|
nir_ssa_def *not_cull = nir_inot(
|
|
b, nir_test_mask(b, rq_load_var(b, index, vars->flags), SpvRayFlagsSkipTrianglesKHRMask));
|
|
nir_ssa_def *not_facing_cull = nir_ieq_imm(
|
|
b,
|
|
nir_iand(b, rq_load_var(b, index, vars->flags),
|
|
nir_bcsel(b, frontface, nir_imm_int(b, SpvRayFlagsCullFrontFacingTrianglesKHRMask),
|
|
nir_imm_int(b, SpvRayFlagsCullBackFacingTrianglesKHRMask))),
|
|
0);
|
|
|
|
not_cull = nir_iand(
|
|
b, not_cull,
|
|
nir_ior(b, not_facing_cull,
|
|
nir_test_mask(b, rq_load_var(b, index, vars->candidate.sbt_offset_and_flags),
|
|
VK_GEOMETRY_INSTANCE_TRIANGLE_FACING_CULL_DISABLE_BIT_KHR << 24)));
|
|
|
|
nir_push_if(b, nir_iand(b,
|
|
nir_iand(b, nir_fge(b, rq_load_var(b, index, vars->closest.t), dist),
|
|
nir_fge(b, dist, rq_load_var(b, index, vars->tmin))),
|
|
not_cull));
|
|
{
|
|
nir_ssa_def *triangle_info =
|
|
nir_build_load_global(b, 2, 32,
|
|
nir_iadd_imm(b, build_node_to_addr(device, b, bvh_node),
|
|
offsetof(struct radv_bvh_triangle_node, triangle_id)));
|
|
nir_ssa_def *primitive_id = nir_channel(b, triangle_info, 0);
|
|
nir_ssa_def *geometry_id_and_flags = nir_channel(b, triangle_info, 1);
|
|
nir_ssa_def *is_opaque =
|
|
hit_is_opaque(b, rq_load_var(b, index, vars->candidate.sbt_offset_and_flags),
|
|
rq_load_var(b, index, vars->flags), geometry_id_and_flags);
|
|
|
|
not_cull =
|
|
nir_ieq_imm(b,
|
|
nir_iand(b, rq_load_var(b, index, vars->flags),
|
|
nir_bcsel(b, is_opaque, nir_imm_int(b, SpvRayFlagsCullOpaqueKHRMask),
|
|
nir_imm_int(b, SpvRayFlagsCullNoOpaqueKHRMask))),
|
|
0);
|
|
nir_push_if(b, not_cull);
|
|
{
|
|
nir_ssa_def *divs[2] = {div, div};
|
|
nir_ssa_def *ij = nir_fdiv(b, nir_channels(b, result, 0xc), nir_vec(b, divs, 2));
|
|
|
|
rq_store_var(b, index, vars->candidate.barycentrics, ij, 3);
|
|
rq_store_var(b, index, vars->candidate.primitive_id, primitive_id, 1);
|
|
rq_store_var(b, index, vars->candidate.geometry_id_and_flags, geometry_id_and_flags, 1);
|
|
rq_store_var(b, index, vars->candidate.t, dist, 0x1);
|
|
rq_store_var(b, index, vars->candidate.opaque, is_opaque, 0x1);
|
|
rq_store_var(b, index, vars->candidate.intersection_type,
|
|
nir_imm_int(b, intersection_type_triangle), 0x1);
|
|
|
|
nir_push_if(b, is_opaque);
|
|
{
|
|
copy_candidate_to_closest(b, index, vars);
|
|
insert_terminate_on_first_hit(b, index, vars, true);
|
|
}
|
|
nir_push_else(b, NULL);
|
|
{
|
|
nir_jump(b, nir_jump_break);
|
|
}
|
|
nir_pop_if(b, NULL);
|
|
}
|
|
nir_pop_if(b, NULL);
|
|
}
|
|
nir_pop_if(b, NULL);
|
|
}
|
|
|
|
static void
|
|
insert_traversal_aabb_case(struct radv_device *device, nir_builder *b, nir_ssa_def *index,
|
|
struct ray_query_vars *vars, nir_ssa_def *bvh_node)
|
|
{
|
|
nir_ssa_def *node_addr = build_node_to_addr(device, b, bvh_node);
|
|
nir_ssa_def *triangle_info = nir_build_load_global(b, 2, 32, nir_iadd_imm(b, node_addr, 24));
|
|
nir_ssa_def *primitive_id = nir_channel(b, triangle_info, 0);
|
|
nir_ssa_def *geometry_id_and_flags = nir_channel(b, triangle_info, 1);
|
|
nir_ssa_def *is_opaque =
|
|
hit_is_opaque(b, rq_load_var(b, index, vars->candidate.sbt_offset_and_flags),
|
|
rq_load_var(b, index, vars->flags), geometry_id_and_flags);
|
|
|
|
nir_ssa_def *not_skip_aabb = nir_inot(
|
|
b, nir_test_mask(b, rq_load_var(b, index, vars->flags), SpvRayFlagsSkipAABBsKHRMask));
|
|
nir_ssa_def *not_cull = nir_iand(
|
|
b, not_skip_aabb,
|
|
nir_ieq_imm(b,
|
|
nir_iand(b, rq_load_var(b, index, vars->flags),
|
|
nir_bcsel(b, is_opaque, nir_imm_int(b, SpvRayFlagsCullOpaqueKHRMask),
|
|
nir_imm_int(b, SpvRayFlagsCullNoOpaqueKHRMask))),
|
|
0));
|
|
nir_push_if(b, not_cull);
|
|
{
|
|
nir_ssa_def *vec3_zero = nir_channels(b, nir_imm_vec4(b, 0, 0, 0, 0), 0x7);
|
|
nir_ssa_def *vec3_inf =
|
|
nir_channels(b, nir_imm_vec4(b, INFINITY, INFINITY, INFINITY, 0), 0x7);
|
|
|
|
nir_ssa_def *bvh_lo = nir_build_load_global(b, 3, 32, nir_iadd_imm(b, node_addr, 0));
|
|
nir_ssa_def *bvh_hi = nir_build_load_global(b, 3, 32, nir_iadd_imm(b, node_addr, 12));
|
|
|
|
bvh_lo = nir_fsub(b, bvh_lo, rq_load_var(b, index, vars->trav.origin));
|
|
bvh_hi = nir_fsub(b, bvh_hi, rq_load_var(b, index, vars->trav.origin));
|
|
nir_ssa_def *t_vec =
|
|
nir_fmin(b, nir_fmul(b, bvh_lo, rq_load_var(b, index, vars->trav.inv_dir)),
|
|
nir_fmul(b, bvh_hi, rq_load_var(b, index, vars->trav.inv_dir)));
|
|
nir_ssa_def *t2_vec =
|
|
nir_fmax(b, nir_fmul(b, bvh_lo, rq_load_var(b, index, vars->trav.inv_dir)),
|
|
nir_fmul(b, bvh_hi, rq_load_var(b, index, vars->trav.inv_dir)));
|
|
/* If we run parallel to one of the edges the range should be [0, inf) not [0,0] */
|
|
t2_vec = nir_bcsel(b, nir_feq(b, rq_load_var(b, index, vars->trav.direction), vec3_zero),
|
|
vec3_inf, t2_vec);
|
|
|
|
nir_ssa_def *t_min = nir_fmax(b, nir_channel(b, t_vec, 0), nir_channel(b, t_vec, 1));
|
|
t_min = nir_fmax(b, t_min, nir_channel(b, t_vec, 2));
|
|
|
|
nir_ssa_def *t_max = nir_fmin(b, nir_channel(b, t2_vec, 0), nir_channel(b, t2_vec, 1));
|
|
t_max = nir_fmin(b, t_max, nir_channel(b, t2_vec, 2));
|
|
|
|
nir_push_if(b, nir_iand(b, nir_fge(b, rq_load_var(b, index, vars->closest.t), t_min),
|
|
nir_fge(b, t_max, rq_load_var(b, index, vars->tmin))));
|
|
{
|
|
rq_store_var(b, index, vars->candidate.t,
|
|
nir_fmax(b, t_min, rq_load_var(b, index, vars->tmin)), 0x1);
|
|
rq_store_var(b, index, vars->candidate.primitive_id, primitive_id, 1);
|
|
rq_store_var(b, index, vars->candidate.geometry_id_and_flags, geometry_id_and_flags, 1);
|
|
rq_store_var(b, index, vars->candidate.opaque, is_opaque, 0x1);
|
|
rq_store_var(b, index, vars->candidate.intersection_type,
|
|
nir_imm_int(b, intersection_type_aabb), 0x1);
|
|
|
|
nir_push_if(b, is_opaque);
|
|
{
|
|
copy_candidate_to_closest(b, index, vars);
|
|
}
|
|
nir_pop_if(b, NULL);
|
|
|
|
nir_jump(b, nir_jump_break);
|
|
}
|
|
nir_pop_if(b, NULL);
|
|
}
|
|
nir_pop_if(b, NULL);
|
|
}
|
|
|
|
static nir_ssa_def *
|
|
lower_rq_proceed(nir_builder *b, nir_ssa_def *index, struct ray_query_vars *vars,
|
|
struct radv_device *device)
|
|
{
|
|
nir_push_if(b, rq_load_var(b, index, vars->incomplete));
|
|
{
|
|
nir_ssa_def *desc = create_bvh_descriptor(b);
|
|
nir_ssa_def *vec3ones = nir_channels(b, nir_imm_vec4(b, 1.0, 1.0, 1.0, 1.0), 0x7);
|
|
|
|
nir_push_loop(b);
|
|
{
|
|
nir_push_if(b, nir_uge(b, rq_load_var(b, index, vars->trav.top_stack),
|
|
rq_load_var(b, index, vars->trav.stack)));
|
|
{
|
|
nir_push_if(b, nir_ieq_imm(b, rq_load_var(b, index, vars->trav.stack), 0));
|
|
{
|
|
rq_store_var(b, index, vars->incomplete, nir_imm_bool(b, false), 0x1);
|
|
nir_jump(b, nir_jump_break);
|
|
}
|
|
nir_pop_if(b, NULL);
|
|
|
|
rq_store_var(b, index, vars->trav.top_stack, nir_imm_int(b, 0), 1);
|
|
rq_store_var(b, index, vars->trav.bvh_base,
|
|
build_addr_to_node(b, rq_load_var(b, index, vars->accel_struct)), 1);
|
|
rq_store_var(b, index, vars->trav.origin, rq_load_var(b, index, vars->origin), 7);
|
|
rq_store_var(b, index, vars->trav.direction, rq_load_var(b, index, vars->direction), 7);
|
|
rq_store_var(b, index, vars->trav.inv_dir,
|
|
nir_fdiv(b, vec3ones, rq_load_var(b, index, vars->direction)), 7);
|
|
}
|
|
nir_pop_if(b, NULL);
|
|
|
|
rq_store_var(b, index, vars->trav.stack,
|
|
nir_iadd_imm(b, rq_load_var(b, index, vars->trav.stack), -1), 1);
|
|
|
|
nir_ssa_def *bvh_node =
|
|
rq_load_array(b, index, vars->stack, rq_load_var(b, index, vars->trav.stack));
|
|
nir_ssa_def *bvh_node_type = bvh_node;
|
|
|
|
bvh_node =
|
|
nir_iadd(b, rq_load_var(b, index, vars->trav.bvh_base), nir_u2u(b, bvh_node, 64));
|
|
nir_ssa_def *intrinsic_result = NULL;
|
|
if (!radv_emulate_rt(device->physical_device)) {
|
|
intrinsic_result = nir_bvh64_intersect_ray_amd(
|
|
b, 32, desc, nir_unpack_64_2x32(b, bvh_node), rq_load_var(b, index, vars->closest.t),
|
|
rq_load_var(b, index, vars->trav.origin),
|
|
rq_load_var(b, index, vars->trav.direction),
|
|
rq_load_var(b, index, vars->trav.inv_dir));
|
|
}
|
|
|
|
/* if (node.type_flags & aabb) */
|
|
nir_push_if(b, nir_ine_imm(b, nir_iand_imm(b, bvh_node_type, 4), 0));
|
|
{
|
|
/* if (node.type_flags & leaf) */
|
|
nir_push_if(b, nir_ine_imm(b, nir_iand_imm(b, bvh_node_type, 2), 0));
|
|
{
|
|
/* custom */
|
|
nir_push_if(b, nir_ine_imm(b, nir_iand_imm(b, bvh_node_type, 1), 0));
|
|
{
|
|
insert_traversal_aabb_case(device, b, index, vars, bvh_node);
|
|
}
|
|
nir_push_else(b, NULL);
|
|
{
|
|
/* instance */
|
|
nir_ssa_def *instance_node_addr = build_node_to_addr(device, b, bvh_node);
|
|
nir_ssa_def *instance_data = nir_build_load_global(
|
|
b, 4, 32, instance_node_addr, .align_mul = 64, .align_offset = 0);
|
|
nir_ssa_def *instance_and_mask = nir_channel(b, instance_data, 2);
|
|
nir_ssa_def *instance_mask = nir_ushr_imm(b, instance_and_mask, 24);
|
|
|
|
nir_push_if(
|
|
b,
|
|
nir_ieq_imm(
|
|
b, nir_iand(b, instance_mask, rq_load_var(b, index, vars->cull_mask)), 0));
|
|
{
|
|
nir_jump(b, nir_jump_continue);
|
|
}
|
|
nir_pop_if(b, NULL);
|
|
|
|
nir_ssa_def *wto_matrix[] = {
|
|
nir_build_load_global(b, 4, 32, nir_iadd_imm(b, instance_node_addr, 16),
|
|
.align_mul = 64, .align_offset = 16),
|
|
nir_build_load_global(b, 4, 32, nir_iadd_imm(b, instance_node_addr, 32),
|
|
.align_mul = 64, .align_offset = 32),
|
|
nir_build_load_global(b, 4, 32, nir_iadd_imm(b, instance_node_addr, 48),
|
|
.align_mul = 64, .align_offset = 48)};
|
|
nir_ssa_def *instance_id =
|
|
nir_build_load_global(b, 1, 32, nir_iadd_imm(b, instance_node_addr, 88));
|
|
|
|
rq_store_var(b, index, vars->trav.top_stack,
|
|
rq_load_var(b, index, vars->trav.stack), 1);
|
|
rq_store_var(b, index, vars->trav.bvh_base,
|
|
build_addr_to_node(
|
|
b, nir_pack_64_2x32(b, nir_channels(b, instance_data, 0x3))),
|
|
1);
|
|
|
|
rq_store_array(b, index, vars->stack, rq_load_var(b, index, vars->trav.stack),
|
|
nir_iand_imm(b, nir_channel(b, instance_data, 0), 63), 0x1);
|
|
rq_store_var(b, index, vars->trav.stack,
|
|
nir_iadd_imm(b, rq_load_var(b, index, vars->trav.stack), 1), 1);
|
|
|
|
rq_store_var(b, index, vars->trav.origin,
|
|
nir_build_vec3_mat_mult_pre(b, rq_load_var(b, index, vars->origin),
|
|
wto_matrix),
|
|
7);
|
|
rq_store_var(b, index, vars->trav.direction,
|
|
nir_build_vec3_mat_mult(b, rq_load_var(b, index, vars->direction),
|
|
wto_matrix, false),
|
|
7);
|
|
rq_store_var(b, index, vars->trav.inv_dir,
|
|
nir_fdiv(b, vec3ones, rq_load_var(b, index, vars->trav.direction)),
|
|
7);
|
|
|
|
rq_store_var(b, index, vars->candidate.sbt_offset_and_flags,
|
|
nir_channel(b, instance_data, 3), 1);
|
|
rq_store_var(b, index, vars->candidate.custom_instance_and_mask,
|
|
instance_and_mask, 1);
|
|
rq_store_var(b, index, vars->candidate.instance_id, instance_id, 1);
|
|
rq_store_var(b, index, vars->candidate.instance_addr, instance_node_addr, 1);
|
|
}
|
|
nir_pop_if(b, NULL);
|
|
}
|
|
nir_push_else(b, NULL);
|
|
{
|
|
nir_ssa_def *result = intrinsic_result;
|
|
if (!result) {
|
|
/* If we didn't run the intrinsic cause the hardware didn't support it,
|
|
* emulate ray/box intersection here */
|
|
result = intersect_ray_amd_software_box(
|
|
device, b, bvh_node, rq_load_var(b, index, vars->closest.t),
|
|
rq_load_var(b, index, vars->trav.origin),
|
|
rq_load_var(b, index, vars->trav.direction),
|
|
rq_load_var(b, index, vars->trav.inv_dir));
|
|
}
|
|
|
|
/* box */
|
|
for (unsigned i = 4; i-- > 0;) {
|
|
nir_ssa_def *new_node = nir_channel(b, result, i);
|
|
nir_push_if(b, nir_ine_imm(b, new_node, 0xffffffff));
|
|
{
|
|
rq_store_array(b, index, vars->stack, rq_load_var(b, index, vars->trav.stack),
|
|
new_node, 0x1);
|
|
rq_store_var(b, index, vars->trav.stack,
|
|
nir_iadd_imm(b, rq_load_var(b, index, vars->trav.stack), 1), 1);
|
|
}
|
|
nir_pop_if(b, NULL);
|
|
}
|
|
}
|
|
nir_pop_if(b, NULL);
|
|
}
|
|
nir_push_else(b, NULL);
|
|
{
|
|
nir_ssa_def *result = intrinsic_result;
|
|
if (!result) {
|
|
/* If we didn't run the intrinsic cause the hardware didn't support it,
|
|
* emulate ray/tri intersection here */
|
|
result = intersect_ray_amd_software_tri(device, b, bvh_node,
|
|
rq_load_var(b, index, vars->closest.t),
|
|
rq_load_var(b, index, vars->trav.origin),
|
|
rq_load_var(b, index, vars->trav.direction),
|
|
rq_load_var(b, index, vars->trav.inv_dir));
|
|
}
|
|
insert_traversal_triangle_case(device, b, index, result, vars, bvh_node);
|
|
}
|
|
nir_pop_if(b, NULL);
|
|
}
|
|
nir_pop_loop(b, NULL);
|
|
}
|
|
nir_pop_if(b, NULL);
|
|
|
|
return rq_load_var(b, index, vars->incomplete);
|
|
}
|
|
|
|
static void
|
|
lower_rq_terminate(nir_builder *b, nir_ssa_def *index, nir_intrinsic_instr *instr,
|
|
struct ray_query_vars *vars)
|
|
{
|
|
rq_store_var(b, index, vars->incomplete, nir_imm_bool(b, false), 0x1);
|
|
}
|
|
|
|
static bool
|
|
is_rq_intrinsic(nir_intrinsic_op intrinsic)
|
|
{
|
|
switch (intrinsic) {
|
|
case nir_intrinsic_rq_confirm_intersection:
|
|
case nir_intrinsic_rq_generate_intersection:
|
|
case nir_intrinsic_rq_initialize:
|
|
case nir_intrinsic_rq_load:
|
|
case nir_intrinsic_rq_proceed:
|
|
case nir_intrinsic_rq_terminate:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool
|
|
radv_nir_lower_ray_queries(struct nir_shader *shader, struct radv_device *device)
|
|
{
|
|
bool contains_ray_query = false;
|
|
struct hash_table *query_ht = _mesa_pointer_hash_table_create(NULL);
|
|
|
|
nir_foreach_variable_in_list (var, &shader->variables) {
|
|
if (!var->data.ray_query)
|
|
continue;
|
|
|
|
lower_ray_query(shader, NULL, var, query_ht);
|
|
contains_ray_query = true;
|
|
}
|
|
|
|
nir_foreach_function (function, shader) {
|
|
if (!function->impl)
|
|
continue;
|
|
|
|
nir_builder builder;
|
|
nir_builder_init(&builder, function->impl);
|
|
|
|
nir_foreach_variable_in_list (var, &function->impl->locals) {
|
|
if (!var->data.ray_query)
|
|
continue;
|
|
|
|
lower_ray_query(NULL, function->impl, var, query_ht);
|
|
contains_ray_query = true;
|
|
}
|
|
|
|
if (!contains_ray_query)
|
|
continue;
|
|
|
|
nir_foreach_block (block, function->impl) {
|
|
nir_foreach_instr_safe (instr, block) {
|
|
if (instr->type != nir_instr_type_intrinsic)
|
|
continue;
|
|
|
|
nir_intrinsic_instr *intrinsic = nir_instr_as_intrinsic(instr);
|
|
|
|
if (!is_rq_intrinsic(intrinsic->intrinsic))
|
|
continue;
|
|
|
|
nir_deref_instr *ray_query_deref =
|
|
nir_instr_as_deref(intrinsic->src[0].ssa->parent_instr);
|
|
nir_ssa_def *index = NULL;
|
|
|
|
if (ray_query_deref->deref_type == nir_deref_type_array) {
|
|
index = ray_query_deref->arr.index.ssa;
|
|
ray_query_deref = nir_instr_as_deref(ray_query_deref->parent.ssa->parent_instr);
|
|
}
|
|
|
|
assert(ray_query_deref->deref_type == nir_deref_type_var);
|
|
|
|
struct ray_query_vars *vars =
|
|
(struct ray_query_vars *)_mesa_hash_table_search(query_ht, ray_query_deref->var)
|
|
->data;
|
|
|
|
builder.cursor = nir_before_instr(instr);
|
|
|
|
nir_ssa_def *new_dest = NULL;
|
|
|
|
switch (intrinsic->intrinsic) {
|
|
case nir_intrinsic_rq_confirm_intersection:
|
|
lower_rq_confirm_intersection(&builder, index, intrinsic, vars);
|
|
break;
|
|
case nir_intrinsic_rq_generate_intersection:
|
|
lower_rq_generate_intersection(&builder, index, intrinsic, vars);
|
|
break;
|
|
case nir_intrinsic_rq_initialize:
|
|
lower_rq_initialize(&builder, index, intrinsic, vars);
|
|
break;
|
|
case nir_intrinsic_rq_load:
|
|
new_dest = lower_rq_load(&builder, index, vars, intrinsic->src[1].ssa,
|
|
(nir_ray_query_value)nir_intrinsic_base(intrinsic),
|
|
nir_intrinsic_column(intrinsic));
|
|
break;
|
|
case nir_intrinsic_rq_proceed:
|
|
new_dest = lower_rq_proceed(&builder, index, vars, device);
|
|
break;
|
|
case nir_intrinsic_rq_terminate:
|
|
lower_rq_terminate(&builder, index, intrinsic, vars);
|
|
break;
|
|
default:
|
|
unreachable("Unsupported ray query intrinsic!");
|
|
}
|
|
|
|
if (new_dest)
|
|
nir_ssa_def_rewrite_uses(&intrinsic->dest.ssa, new_dest);
|
|
|
|
nir_instr_remove(instr);
|
|
nir_instr_free(instr);
|
|
}
|
|
}
|
|
|
|
nir_metadata_preserve(function->impl, nir_metadata_none);
|
|
}
|
|
|
|
ralloc_free(query_ht);
|
|
|
|
return contains_ray_query;
|
|
}
|