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/*
* Copyright © 2017 Red Hat
*
* 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 "nir/nir.h"
#include "ac_shader_info.h"
#include "ac_nir_to_llvm.h"
static void mark_sampler_desc(const nir_variable *var,
struct ac_shader_info *info)
{
info->desc_set_used_mask = (1 << var->data.descriptor_set);
}
static void
gather_intrinsic_info(const nir_shader *nir, const nir_intrinsic_instr *instr,
struct ac_shader_info *info)
{
switch (instr->intrinsic) {
case nir_intrinsic_interp_var_at_sample:
info->ps.needs_sample_positions = true;
break;
case nir_intrinsic_load_draw_id:
info->vs.needs_draw_id = true;
break;
case nir_intrinsic_load_instance_id:
info->vs.needs_instance_id = true;
break;
case nir_intrinsic_load_num_work_groups:
info->cs.uses_grid_size = true;
break;
case nir_intrinsic_load_local_invocation_id:
case nir_intrinsic_load_work_group_id: {
unsigned mask = nir_ssa_def_components_read(&instr->dest.ssa);
while (mask) {
unsigned i = u_bit_scan(&mask);
if (instr->intrinsic == nir_intrinsic_load_work_group_id)
info->cs.uses_block_id[i] = true;
else
info->cs.uses_thread_id[i] = true;
}
break;
}
case nir_intrinsic_load_local_invocation_index:
info->cs.uses_local_invocation_idx = true;
break;
case nir_intrinsic_load_sample_id:
info->ps.force_persample = true;
break;
case nir_intrinsic_load_sample_pos:
info->ps.force_persample = true;
break;
case nir_intrinsic_load_view_index:
info->needs_multiview_view_index = true;
break;
case nir_intrinsic_load_invocation_id:
info->uses_invocation_id = true;
break;
case nir_intrinsic_load_primitive_id:
info->uses_prim_id = true;
break;
case nir_intrinsic_load_push_constant:
info->loads_push_constants = true;
break;
case nir_intrinsic_vulkan_resource_index:
info->desc_set_used_mask |= (1 << nir_intrinsic_desc_set(instr));
break;
case nir_intrinsic_image_load:
case nir_intrinsic_image_store:
case nir_intrinsic_image_atomic_add:
case nir_intrinsic_image_atomic_min:
case nir_intrinsic_image_atomic_max:
case nir_intrinsic_image_atomic_and:
case nir_intrinsic_image_atomic_or:
case nir_intrinsic_image_atomic_xor:
case nir_intrinsic_image_atomic_exchange:
case nir_intrinsic_image_atomic_comp_swap:
case nir_intrinsic_image_size: {
const struct glsl_type *type = instr->variables[0]->var->type;
if(instr->variables[0]->deref.child)
type = instr->variables[0]->deref.child->type;
enum glsl_sampler_dim dim = glsl_get_sampler_dim(type);
if (dim == GLSL_SAMPLER_DIM_SUBPASS ||
dim == GLSL_SAMPLER_DIM_SUBPASS_MS)
info->ps.uses_input_attachments = true;
mark_sampler_desc(instr->variables[0]->var, info);
if (nir_intrinsic_image_store ||
nir_intrinsic_image_atomic_add ||
nir_intrinsic_image_atomic_min ||
nir_intrinsic_image_atomic_max ||
nir_intrinsic_image_atomic_and ||
nir_intrinsic_image_atomic_or ||
nir_intrinsic_image_atomic_xor ||
nir_intrinsic_image_atomic_exchange ||
nir_intrinsic_image_atomic_comp_swap) {
if (nir->info.stage == MESA_SHADER_FRAGMENT)
info->ps.writes_memory = true;
}
break;
}
case nir_intrinsic_store_ssbo:
case nir_intrinsic_ssbo_atomic_add:
case nir_intrinsic_ssbo_atomic_imin:
case nir_intrinsic_ssbo_atomic_umin:
case nir_intrinsic_ssbo_atomic_imax:
case nir_intrinsic_ssbo_atomic_umax:
case nir_intrinsic_ssbo_atomic_and:
case nir_intrinsic_ssbo_atomic_or:
case nir_intrinsic_ssbo_atomic_xor:
case nir_intrinsic_ssbo_atomic_exchange:
case nir_intrinsic_ssbo_atomic_comp_swap:
if (nir->info.stage == MESA_SHADER_FRAGMENT)
info->ps.writes_memory = true;
break;
case nir_intrinsic_load_var:
if (nir->info.stage == MESA_SHADER_VERTEX) {
nir_deref_var *dvar = instr->variables[0];
nir_variable *var = dvar->var;
if (var->data.mode == nir_var_shader_in) {
unsigned idx = var->data.location;
uint8_t mask =
nir_ssa_def_components_read(&instr->dest.ssa);
info->vs.input_usage_mask[idx] |= mask;
}
}
break;
default:
break;
}
}
static void
gather_tex_info(const nir_shader *nir, const nir_tex_instr *instr,
struct ac_shader_info *info)
{
if (instr->sampler)
mark_sampler_desc(instr->sampler->var, info);
if (instr->texture)
mark_sampler_desc(instr->texture->var, info);
}
static void
gather_info_block(const nir_shader *nir, const nir_block *block,
struct ac_shader_info *info)
{
nir_foreach_instr(instr, block) {
switch (instr->type) {
case nir_instr_type_intrinsic:
gather_intrinsic_info(nir, nir_instr_as_intrinsic(instr), info);
break;
case nir_instr_type_tex:
gather_tex_info(nir, nir_instr_as_tex(instr), info);
break;
default:
break;
}
}
}
static void
gather_info_input_decl(const nir_shader *nir, const nir_variable *var,
struct ac_shader_info *info)
{
switch (nir->info.stage) {
case MESA_SHADER_VERTEX:
info->vs.has_vertex_buffers = true;
break;
default:
break;
}
}
static void
gather_info_output_decl_ps(const nir_shader *nir, const nir_variable *var,
struct ac_shader_info *info)
{
int idx = var->data.location;
switch (idx) {
case FRAG_RESULT_DEPTH:
info->ps.writes_z = true;
break;
case FRAG_RESULT_STENCIL:
info->ps.writes_stencil = true;
break;
case FRAG_RESULT_SAMPLE_MASK:
info->ps.writes_sample_mask = true;
break;
default:
break;
}
}
static void
gather_info_output_decl(const nir_shader *nir, const nir_variable *var,
struct ac_shader_info *info)
{
switch (nir->info.stage) {
case MESA_SHADER_FRAGMENT:
gather_info_output_decl_ps(nir, var, info);
break;
default:
break;
}
}
void
ac_nir_shader_info_pass(const struct nir_shader *nir,
const struct ac_nir_compiler_options *options,
struct ac_shader_info *info)
{
struct nir_function *func =
(struct nir_function *)exec_list_get_head_const(&nir->functions);
if (options->layout->dynamic_offset_count)
info->loads_push_constants = true;
nir_foreach_variable(variable, &nir->inputs)
gather_info_input_decl(nir, variable, info);
nir_foreach_block(block, func->impl) {
gather_info_block(nir, block, info);
}
nir_foreach_variable(variable, &nir->outputs)
gather_info_output_decl(nir, variable, info);
}
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