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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.h"
#include "ac_shader_info.h"
#include "ac_nir_to_llvm.h"
static void
gather_intrinsic_info(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;
default:
break;
}
}
static void
gather_info_block(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_instr_as_intrinsic(instr), info);
break;
default:
break;
}
}
}
static void
gather_info_input_decl(nir_shader *nir,
const struct ac_nir_compiler_options *options,
nir_variable *var,
struct ac_shader_info *info)
{
switch (nir->stage) {
case MESA_SHADER_VERTEX:
info->vs.has_vertex_buffers = true;
break;
default:
break;
}
}
void
ac_nir_shader_info_pass(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(&nir->functions);
nir_foreach_variable(variable, &nir->inputs)
gather_info_input_decl(nir, options, variable, info);
nir_foreach_block(block, func->impl) {
gather_info_block(block, info);
}
}
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