Jason Ekstrand
109 lines
3.6 KiB
C
109 lines
3.6 KiB
C
/*
|
|
* Copyright © 2015 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.
|
|
*/
|
|
|
|
#include "nir.h"
|
|
|
|
static void
|
|
gather_intrinsic_info(nir_intrinsic_instr *instr, nir_shader *shader)
|
|
{
|
|
switch (instr->intrinsic) {
|
|
case nir_intrinsic_discard:
|
|
assert(shader->stage == MESA_SHADER_FRAGMENT);
|
|
shader->info.fs.uses_discard = true;
|
|
break;
|
|
|
|
case nir_intrinsic_load_front_face:
|
|
case nir_intrinsic_load_vertex_id:
|
|
case nir_intrinsic_load_vertex_id_zero_base:
|
|
case nir_intrinsic_load_base_vertex:
|
|
case nir_intrinsic_load_instance_id:
|
|
case nir_intrinsic_load_sample_id:
|
|
case nir_intrinsic_load_sample_pos:
|
|
case nir_intrinsic_load_sample_mask_in:
|
|
case nir_intrinsic_load_primitive_id:
|
|
case nir_intrinsic_load_invocation_id:
|
|
case nir_intrinsic_load_local_invocation_id:
|
|
case nir_intrinsic_load_work_group_id:
|
|
case nir_intrinsic_load_num_work_groups:
|
|
shader->info.system_values_read |=
|
|
(1 << nir_system_value_from_intrinsic(instr->intrinsic));
|
|
break;
|
|
|
|
case nir_intrinsic_end_primitive:
|
|
assert(shader->stage == MESA_SHADER_GEOMETRY);
|
|
shader->info.gs.uses_end_primitive = 1;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gather_tex_info(nir_tex_instr *instr, nir_shader *shader)
|
|
{
|
|
if (instr->op == nir_texop_tg4)
|
|
shader->info.uses_texture_gather = true;
|
|
}
|
|
|
|
static bool
|
|
gather_info_block(nir_block *block, void *shader)
|
|
{
|
|
nir_foreach_instr(block, instr) {
|
|
switch (instr->type) {
|
|
case nir_instr_type_intrinsic:
|
|
gather_intrinsic_info(nir_instr_as_intrinsic(instr), shader);
|
|
break;
|
|
case nir_instr_type_tex:
|
|
gather_tex_info(nir_instr_as_tex(instr), shader);
|
|
break;
|
|
case nir_instr_type_call:
|
|
assert(!"nir_shader_gather_info only works if functions are inlined");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nir_shader_gather_info(nir_shader *shader, nir_function_impl *entrypoint)
|
|
{
|
|
shader->info.inputs_read = 0;
|
|
foreach_list_typed(nir_variable, var, node, &shader->inputs)
|
|
shader->info.inputs_read |= (1ull << var->data.location);
|
|
|
|
/* TODO: Some day we may need to add stream support to NIR */
|
|
shader->info.outputs_written = 0;
|
|
foreach_list_typed(nir_variable, var, node, &shader->outputs)
|
|
shader->info.outputs_written |= (1ull << var->data.location);
|
|
|
|
shader->info.system_values_read = 0;
|
|
foreach_list_typed(nir_variable, var, node, &shader->system_values)
|
|
shader->info.system_values_read |= (1ull << var->data.location);
|
|
|
|
nir_foreach_block(entrypoint, gather_info_block, shader);
|
|
}
|