1 /* -*- mesa-c++ -*-
2 *
3 * Copyright (c) 2018 Collabora LTD
4 *
5 * Author: Gert Wollny <gert.wollny@collabora.com>
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * on the rights to use, copy, modify, merge, publish, distribute, sub
11 * license, and/or sell copies of the Software, and to permit persons to whom
12 * the Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the next
15 * paragraph) shall be included in all copies or substantial portions of the
16 * Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 */
26
27 #include "sfn_shader_compute.h"
28 #include "sfn_instruction_fetch.h"
29
30 namespace r600 {
31
ComputeShaderFromNir(r600_pipe_shader * sh,r600_pipe_shader_selector & sel,UNUSED const r600_shader_key & key,enum chip_class chip_class)32 ComputeShaderFromNir::ComputeShaderFromNir(r600_pipe_shader *sh,
33 r600_pipe_shader_selector& sel,
34 UNUSED const r600_shader_key& key,
35 enum chip_class chip_class):
36 ShaderFromNirProcessor (PIPE_SHADER_COMPUTE, sel, sh->shader,
37 sh->scratch_space_needed, chip_class, 0),
38 m_reserved_registers(0)
39 {
40 }
41
scan_sysvalue_access(UNUSED nir_instr * instr)42 bool ComputeShaderFromNir::scan_sysvalue_access(UNUSED nir_instr *instr)
43 {
44 return true;
45 }
do_allocate_reserved_registers()46 bool ComputeShaderFromNir::do_allocate_reserved_registers()
47 {
48 int thread_id_sel = m_reserved_registers++;
49 int wg_id_sel = m_reserved_registers++;
50
51 for (int i = 0; i < 3; ++i) {
52 auto tmp = new GPRValue(thread_id_sel, i);
53 tmp->set_as_input();
54 tmp->set_keep_alive();
55 m_local_invocation_id[i] = PValue(tmp);
56 inject_register(tmp->sel(), i, m_local_invocation_id[i], false);
57
58 tmp = new GPRValue(wg_id_sel, i);
59 tmp->set_as_input();
60 tmp->set_keep_alive();
61 m_workgroup_id[i] = PValue(tmp);
62 inject_register(tmp->sel(), i, m_workgroup_id[i], false);
63 }
64 return true;
65 }
66
emit_intrinsic_instruction_override(nir_intrinsic_instr * instr)67 bool ComputeShaderFromNir::emit_intrinsic_instruction_override(nir_intrinsic_instr* instr)
68 {
69 switch (instr->intrinsic) {
70 case nir_intrinsic_load_local_invocation_id:
71 return emit_load_3vec(instr, m_local_invocation_id);
72 case nir_intrinsic_load_workgroup_id:
73 return emit_load_3vec(instr, m_workgroup_id);
74 case nir_intrinsic_load_num_workgroups:
75 return emit_load_num_workgroups(instr);
76 default:
77 return false;
78 }
79 }
80
emit_load_3vec(nir_intrinsic_instr * instr,const std::array<PValue,3> & src)81 bool ComputeShaderFromNir::emit_load_3vec(nir_intrinsic_instr* instr,
82 const std::array<PValue,3>& src)
83 {
84 for (int i = 0; i < 3; ++i)
85 load_preloaded_value(instr->dest, i, src[i], i == 2);
86 return true;
87 }
88
emit_load_num_workgroups(nir_intrinsic_instr * instr)89 bool ComputeShaderFromNir::emit_load_num_workgroups(nir_intrinsic_instr* instr)
90 {
91 PValue a_zero = get_temp_register(1);
92 emit_instruction(new AluInstruction(op1_mov, a_zero, Value::zero, EmitInstruction::last_write));
93 GPRVector dest;
94 for (int i = 0; i < 3; ++i)
95 dest.set_reg_i(i, from_nir(instr->dest, i));
96 dest.set_reg_i(3, from_nir(instr->dest, 7));
97
98 auto ir = new FetchInstruction(vc_fetch, no_index_offset,
99 fmt_32_32_32_32, vtx_nf_int, vtx_es_none, a_zero, dest, 16,
100 false, 16, R600_BUFFER_INFO_CONST_BUFFER, 0,
101 bim_none, false, false, 0, 0, 0, PValue(), {0,1,2,7});
102 ir->set_flag(vtx_srf_mode);
103 emit_instruction(ir);
104 return true;
105 }
106
do_finalize()107 void ComputeShaderFromNir::do_finalize()
108 {
109
110 }
111
112 }
113