1 /*
2 * Copyright 2016 Red Hat.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23 #include "util/u_inlines.h"
24 #include "util/u_math.h"
25 #include "util/u_memory.h"
26 #include "util/u_pstipple.h"
27 #include "pipe/p_shader_tokens.h"
28 #include "draw/draw_context.h"
29 #include "draw/draw_vertex.h"
30 #include "sp_context.h"
31 #include "sp_screen.h"
32 #include "sp_state.h"
33 #include "sp_texture.h"
34 #include "sp_tex_sample.h"
35 #include "sp_tex_tile_cache.h"
36 #include "tgsi/tgsi_parse.h"
37
38 static void
cs_prepare(const struct sp_compute_shader * cs,struct tgsi_exec_machine * machine,int w,int h,int d,int g_w,int g_h,int g_d,int b_w,int b_h,int b_d,struct tgsi_sampler * sampler,struct tgsi_image * image,struct tgsi_buffer * buffer)39 cs_prepare(const struct sp_compute_shader *cs,
40 struct tgsi_exec_machine *machine,
41 int w, int h, int d,
42 int g_w, int g_h, int g_d,
43 int b_w, int b_h, int b_d,
44 struct tgsi_sampler *sampler,
45 struct tgsi_image *image,
46 struct tgsi_buffer *buffer )
47 {
48 int j;
49 /*
50 * Bind tokens/shader to the interpreter's machine state.
51 */
52 tgsi_exec_machine_bind_shader(machine,
53 cs->tokens,
54 sampler, image, buffer);
55
56 if (machine->SysSemanticToIndex[TGSI_SEMANTIC_THREAD_ID] != -1) {
57 unsigned i = machine->SysSemanticToIndex[TGSI_SEMANTIC_THREAD_ID];
58 for (j = 0; j < TGSI_QUAD_SIZE; j++) {
59 machine->SystemValue[i].xyzw[0].i[j] = w;
60 machine->SystemValue[i].xyzw[1].i[j] = h;
61 machine->SystemValue[i].xyzw[2].i[j] = d;
62 }
63 }
64
65 if (machine->SysSemanticToIndex[TGSI_SEMANTIC_GRID_SIZE] != -1) {
66 unsigned i = machine->SysSemanticToIndex[TGSI_SEMANTIC_GRID_SIZE];
67 for (j = 0; j < TGSI_QUAD_SIZE; j++) {
68 machine->SystemValue[i].xyzw[0].i[j] = g_w;
69 machine->SystemValue[i].xyzw[1].i[j] = g_h;
70 machine->SystemValue[i].xyzw[2].i[j] = g_d;
71 }
72 }
73
74 if (machine->SysSemanticToIndex[TGSI_SEMANTIC_BLOCK_SIZE] != -1) {
75 unsigned i = machine->SysSemanticToIndex[TGSI_SEMANTIC_BLOCK_SIZE];
76 for (j = 0; j < TGSI_QUAD_SIZE; j++) {
77 machine->SystemValue[i].xyzw[0].i[j] = b_w;
78 machine->SystemValue[i].xyzw[1].i[j] = b_h;
79 machine->SystemValue[i].xyzw[2].i[j] = b_d;
80 }
81 }
82 }
83
84 static bool
cs_run(const struct sp_compute_shader * cs,int g_w,int g_h,int g_d,struct tgsi_exec_machine * machine,bool restart)85 cs_run(const struct sp_compute_shader *cs,
86 int g_w, int g_h, int g_d,
87 struct tgsi_exec_machine *machine, bool restart)
88 {
89 if (!restart) {
90 if (machine->SysSemanticToIndex[TGSI_SEMANTIC_BLOCK_ID] != -1) {
91 unsigned i = machine->SysSemanticToIndex[TGSI_SEMANTIC_BLOCK_ID];
92 int j;
93 for (j = 0; j < TGSI_QUAD_SIZE; j++) {
94 machine->SystemValue[i].xyzw[0].i[j] = g_w;
95 machine->SystemValue[i].xyzw[1].i[j] = g_h;
96 machine->SystemValue[i].xyzw[2].i[j] = g_d;
97 }
98 }
99 machine->NonHelperMask = (1 << 1) - 1;
100 }
101
102 tgsi_exec_machine_run(machine, restart ? machine->pc : 0);
103
104 if (machine->pc != -1)
105 return true;
106 return false;
107 }
108
109 static void
run_workgroup(const struct sp_compute_shader * cs,int g_w,int g_h,int g_d,int num_threads,struct tgsi_exec_machine ** machines)110 run_workgroup(const struct sp_compute_shader *cs,
111 int g_w, int g_h, int g_d, int num_threads,
112 struct tgsi_exec_machine **machines)
113 {
114 int i;
115 bool grp_hit_barrier, restart_threads = false;
116
117 do {
118 grp_hit_barrier = false;
119 for (i = 0; i < num_threads; i++) {
120 grp_hit_barrier |= cs_run(cs, g_w, g_h, g_d, machines[i], restart_threads);
121 }
122 restart_threads = false;
123 if (grp_hit_barrier) {
124 grp_hit_barrier = false;
125 restart_threads = true;
126 }
127 } while (restart_threads);
128 }
129
130 static void
cs_delete(const struct sp_compute_shader * cs,struct tgsi_exec_machine * machine)131 cs_delete(const struct sp_compute_shader *cs,
132 struct tgsi_exec_machine *machine)
133 {
134 if (machine->Tokens == cs->tokens) {
135 tgsi_exec_machine_bind_shader(machine, NULL, NULL, NULL, NULL);
136 }
137 }
138
139 static void
fill_grid_size(struct pipe_context * context,const struct pipe_grid_info * info,uint32_t grid_size[3])140 fill_grid_size(struct pipe_context *context,
141 const struct pipe_grid_info *info,
142 uint32_t grid_size[3])
143 {
144 struct pipe_transfer *transfer;
145 uint32_t *params;
146 if (!info->indirect) {
147 grid_size[0] = info->grid[0];
148 grid_size[1] = info->grid[1];
149 grid_size[2] = info->grid[2];
150 return;
151 }
152 params = pipe_buffer_map_range(context, info->indirect,
153 info->indirect_offset,
154 3 * sizeof(uint32_t),
155 PIPE_MAP_READ,
156 &transfer);
157
158 if (!transfer)
159 return;
160
161 grid_size[0] = params[0];
162 grid_size[1] = params[1];
163 grid_size[2] = params[2];
164 pipe_buffer_unmap(context, transfer);
165 }
166
167 void
softpipe_launch_grid(struct pipe_context * context,const struct pipe_grid_info * info)168 softpipe_launch_grid(struct pipe_context *context,
169 const struct pipe_grid_info *info)
170 {
171 struct softpipe_context *softpipe = softpipe_context(context);
172 struct sp_compute_shader *cs = softpipe->cs;
173 int num_threads_in_group;
174 struct tgsi_exec_machine **machines;
175 int bwidth, bheight, bdepth;
176 int w, h, d, i;
177 int g_w, g_h, g_d;
178 uint32_t grid_size[3] = {0};
179 void *local_mem = NULL;
180
181 softpipe_update_compute_samplers(softpipe);
182 bwidth = cs->info.properties[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH];
183 bheight = cs->info.properties[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT];
184 bdepth = cs->info.properties[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH];
185 num_threads_in_group = bwidth * bheight * bdepth;
186
187 fill_grid_size(context, info, grid_size);
188
189 if (cs->shader.req_local_mem) {
190 local_mem = CALLOC(1, cs->shader.req_local_mem);
191 }
192
193 machines = CALLOC(sizeof(struct tgsi_exec_machine *), num_threads_in_group);
194 if (!machines) {
195 FREE(local_mem);
196 return;
197 }
198
199 /* initialise machines + GRID_SIZE + THREAD_ID + BLOCK_SIZE */
200 for (d = 0; d < bdepth; d++) {
201 for (h = 0; h < bheight; h++) {
202 for (w = 0; w < bwidth; w++) {
203 int idx = w + (h * bwidth) + (d * bheight * bwidth);
204 machines[idx] = tgsi_exec_machine_create(PIPE_SHADER_COMPUTE);
205
206 machines[idx]->LocalMem = local_mem;
207 machines[idx]->LocalMemSize = cs->shader.req_local_mem;
208 cs_prepare(cs, machines[idx],
209 w, h, d,
210 grid_size[0], grid_size[1], grid_size[2],
211 bwidth, bheight, bdepth,
212 (struct tgsi_sampler *)softpipe->tgsi.sampler[PIPE_SHADER_COMPUTE],
213 (struct tgsi_image *)softpipe->tgsi.image[PIPE_SHADER_COMPUTE],
214 (struct tgsi_buffer *)softpipe->tgsi.buffer[PIPE_SHADER_COMPUTE]);
215 tgsi_exec_set_constant_buffers(machines[idx], PIPE_MAX_CONSTANT_BUFFERS,
216 softpipe->mapped_constants[PIPE_SHADER_COMPUTE],
217 softpipe->const_buffer_size[PIPE_SHADER_COMPUTE]);
218 }
219 }
220 }
221
222 for (g_d = 0; g_d < grid_size[2]; g_d++) {
223 for (g_h = 0; g_h < grid_size[1]; g_h++) {
224 for (g_w = 0; g_w < grid_size[0]; g_w++) {
225 run_workgroup(cs, g_w, g_h, g_d, num_threads_in_group, machines);
226 }
227 }
228 }
229
230 if (softpipe->active_statistics_queries) {
231 softpipe->pipeline_statistics.cs_invocations +=
232 grid_size[0] * grid_size[1] * grid_size[2];
233 }
234
235 for (i = 0; i < num_threads_in_group; i++) {
236 cs_delete(cs, machines[i]);
237 tgsi_exec_machine_destroy(machines[i]);
238 }
239
240 FREE(local_mem);
241 FREE(machines);
242 }
243