2014-07-30 20:07:45 +01:00
|
|
|
/*
|
|
|
|
* Copyright © 2014 Intel Corporation
|
|
|
|
*
|
|
|
|
* 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.
|
|
|
|
*
|
|
|
|
* Authors:
|
|
|
|
* Connor Abbott (cwabbott0@gmail.com)
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "nir.h"
|
2015-12-15 02:56:59 +00:00
|
|
|
#include "nir_builder.h"
|
|
|
|
|
|
|
|
struct lower_system_values_state {
|
|
|
|
nir_builder builder;
|
|
|
|
bool progress;
|
|
|
|
};
|
2014-07-30 20:07:45 +01:00
|
|
|
|
2015-09-17 21:00:58 +01:00
|
|
|
static bool
|
2015-12-15 02:56:59 +00:00
|
|
|
convert_block(nir_block *block, void *void_state)
|
2014-07-30 20:07:45 +01:00
|
|
|
{
|
2015-12-15 02:56:59 +00:00
|
|
|
struct lower_system_values_state *state = void_state;
|
2014-07-30 20:07:45 +01:00
|
|
|
|
2015-12-15 02:56:59 +00:00
|
|
|
nir_builder *b = &state->builder;
|
2014-07-30 20:07:45 +01:00
|
|
|
|
2015-12-15 02:56:59 +00:00
|
|
|
nir_foreach_instr_safe(block, instr) {
|
|
|
|
if (instr->type != nir_instr_type_intrinsic)
|
|
|
|
continue;
|
2014-07-30 20:07:45 +01:00
|
|
|
|
2015-12-15 02:56:59 +00:00
|
|
|
nir_intrinsic_instr *load_var = nir_instr_as_intrinsic(instr);
|
2015-12-15 02:18:03 +00:00
|
|
|
|
2015-12-15 02:56:59 +00:00
|
|
|
if (load_var->intrinsic != nir_intrinsic_load_var)
|
|
|
|
continue;
|
2014-12-16 01:37:07 +00:00
|
|
|
|
2015-12-15 02:56:59 +00:00
|
|
|
nir_variable *var = load_var->variables[0]->var;
|
|
|
|
if (var->data.mode != nir_var_system_value)
|
|
|
|
continue;
|
2014-12-16 01:37:07 +00:00
|
|
|
|
2015-12-15 02:56:59 +00:00
|
|
|
b->cursor = nir_after_instr(&load_var->instr);
|
2015-09-17 21:00:58 +01:00
|
|
|
|
2015-12-15 02:56:59 +00:00
|
|
|
nir_intrinsic_op sysval_op =
|
|
|
|
nir_intrinsic_from_system_value(var->data.location);
|
|
|
|
nir_ssa_def *sysval = nir_load_system_value(b, sysval_op, 0);
|
2014-07-30 20:07:45 +01:00
|
|
|
|
2015-12-15 02:56:59 +00:00
|
|
|
nir_ssa_def_rewrite_uses(&load_var->dest.ssa, nir_src_for_ssa(sysval));
|
|
|
|
nir_instr_remove(&load_var->instr);
|
2014-07-30 20:07:45 +01:00
|
|
|
|
2015-12-15 02:56:59 +00:00
|
|
|
state->progress = true;
|
2014-07-30 20:07:45 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2015-09-17 21:00:58 +01:00
|
|
|
static bool
|
2014-07-30 20:07:45 +01:00
|
|
|
convert_impl(nir_function_impl *impl)
|
|
|
|
{
|
2015-12-15 02:56:59 +00:00
|
|
|
struct lower_system_values_state state;
|
2015-09-17 21:00:58 +01:00
|
|
|
|
2015-12-15 02:56:59 +00:00
|
|
|
state.progress = false;
|
|
|
|
nir_builder_init(&state.builder, impl);
|
|
|
|
|
|
|
|
nir_foreach_block(impl, convert_block, &state);
|
2014-12-13 00:25:38 +00:00
|
|
|
nir_metadata_preserve(impl, nir_metadata_block_index |
|
|
|
|
nir_metadata_dominance);
|
2015-12-15 02:56:59 +00:00
|
|
|
return state.progress;
|
2014-07-30 20:07:45 +01:00
|
|
|
}
|
|
|
|
|
2015-09-17 21:00:58 +01:00
|
|
|
bool
|
2014-07-30 20:07:45 +01:00
|
|
|
nir_lower_system_values(nir_shader *shader)
|
|
|
|
{
|
2015-09-17 21:00:58 +01:00
|
|
|
bool progress = false;
|
|
|
|
|
2014-07-30 20:07:45 +01:00
|
|
|
nir_foreach_overload(shader, overload) {
|
|
|
|
if (overload->impl)
|
2015-09-17 21:00:58 +01:00
|
|
|
progress = convert_impl(overload->impl) || progress;
|
2014-07-30 20:07:45 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
exec_list_make_empty(&shader->system_values);
|
2015-09-17 21:00:58 +01:00
|
|
|
|
|
|
|
return progress;
|
2014-07-30 20:07:45 +01:00
|
|
|
}
|