1 /*
2 * Copyright © 2013 Intel Corporation
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * 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 NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 /**
25 * \file brw_binding_tables.c
26 *
27 * State atoms which upload the "binding table" for each shader stage.
28 *
29 * Binding tables map a numeric "surface index" to the SURFACE_STATE structure
30 * for a currently bound surface. This allows SEND messages (such as sampler
31 * or data port messages) to refer to a particular surface by number, rather
32 * than by pointer.
33 *
34 * The binding table is stored as a (sparse) array of SURFACE_STATE entries;
35 * surface indexes are simply indexes into the array. The ordering of the
36 * entries is entirely left up to software; see the SURF_INDEX_* macros in
37 * brw_context.h to see our current layout.
38 */
39
40 #include "main/mtypes.h"
41
42 #include "brw_context.h"
43 #include "brw_defines.h"
44 #include "brw_state.h"
45 #include "brw_batch.h"
46
47 /**
48 * Upload a shader stage's binding table as indirect state.
49 *
50 * This copies brw_stage_state::surf_offset[] into the indirect state section
51 * of the batchbuffer (allocated by brw_state_batch()).
52 */
53 void
brw_upload_binding_table(struct brw_context * brw,uint32_t packet_name,const struct brw_stage_prog_data * prog_data,struct brw_stage_state * stage_state)54 brw_upload_binding_table(struct brw_context *brw,
55 uint32_t packet_name,
56 const struct brw_stage_prog_data *prog_data,
57 struct brw_stage_state *stage_state)
58 {
59 const struct intel_device_info *devinfo = &brw->screen->devinfo;
60
61 if (prog_data->binding_table.size_bytes == 0) {
62 /* There are no surfaces; skip making the binding table altogether. */
63 if (stage_state->bind_bo_offset == 0 && devinfo->ver < 9)
64 return;
65
66 stage_state->bind_bo_offset = 0;
67 } else {
68 /* Upload a new binding table. */
69 if (INTEL_DEBUG(DEBUG_SHADER_TIME)) {
70 brw_emit_buffer_surface_state(
71 brw, &stage_state->surf_offset[
72 prog_data->binding_table.shader_time_start],
73 brw->shader_time.bo, 0, ISL_FORMAT_RAW,
74 brw->shader_time.bo->size, 1, RELOC_WRITE);
75 }
76 uint32_t *bind =
77 brw_state_batch(brw, prog_data->binding_table.size_bytes,
78 32, &stage_state->bind_bo_offset);
79
80 /* BRW_NEW_SURFACES and BRW_NEW_*_CONSTBUF */
81 memcpy(bind, stage_state->surf_offset,
82 prog_data->binding_table.size_bytes);
83 }
84
85 brw->ctx.NewDriverState |= BRW_NEW_BINDING_TABLE_POINTERS;
86
87 if (devinfo->ver >= 7) {
88 BEGIN_BATCH(2);
89 OUT_BATCH(packet_name << 16 | (2 - 2));
90 /* Align SurfaceStateOffset[16:6] format to [15:5] PS Binding Table field
91 * when hw-generated binding table is enabled.
92 */
93 OUT_BATCH(stage_state->bind_bo_offset);
94 ADVANCE_BATCH();
95 }
96 }
97
98 /**
99 * State atoms which upload the binding table for a particular shader stage.
100 * @{
101 */
102
103 /** Upload the VS binding table. */
104 static void
brw_vs_upload_binding_table(struct brw_context * brw)105 brw_vs_upload_binding_table(struct brw_context *brw)
106 {
107 /* BRW_NEW_VS_PROG_DATA */
108 const struct brw_stage_prog_data *prog_data = brw->vs.base.prog_data;
109 brw_upload_binding_table(brw,
110 _3DSTATE_BINDING_TABLE_POINTERS_VS,
111 prog_data,
112 &brw->vs.base);
113 }
114
115 const struct brw_tracked_state brw_vs_binding_table = {
116 .dirty = {
117 .mesa = 0,
118 .brw = BRW_NEW_BATCH |
119 BRW_NEW_BLORP |
120 BRW_NEW_VS_CONSTBUF |
121 BRW_NEW_VS_PROG_DATA |
122 BRW_NEW_SURFACES,
123 },
124 .emit = brw_vs_upload_binding_table,
125 };
126
127
128 /** Upload the PS binding table. */
129 static void
brw_upload_wm_binding_table(struct brw_context * brw)130 brw_upload_wm_binding_table(struct brw_context *brw)
131 {
132 /* BRW_NEW_FS_PROG_DATA */
133 const struct brw_stage_prog_data *prog_data = brw->wm.base.prog_data;
134 brw_upload_binding_table(brw,
135 _3DSTATE_BINDING_TABLE_POINTERS_PS,
136 prog_data,
137 &brw->wm.base);
138 }
139
140 const struct brw_tracked_state brw_wm_binding_table = {
141 .dirty = {
142 .mesa = 0,
143 .brw = BRW_NEW_BATCH |
144 BRW_NEW_BLORP |
145 BRW_NEW_FS_PROG_DATA |
146 BRW_NEW_SURFACES,
147 },
148 .emit = brw_upload_wm_binding_table,
149 };
150
151 /** Upload the TCS binding table (if tessellation stages are active). */
152 static void
brw_tcs_upload_binding_table(struct brw_context * brw)153 brw_tcs_upload_binding_table(struct brw_context *brw)
154 {
155 /* Skip if the tessellation stages are disabled. */
156 if (brw->programs[MESA_SHADER_TESS_EVAL] == NULL)
157 return;
158
159 /* BRW_NEW_TCS_PROG_DATA */
160 const struct brw_stage_prog_data *prog_data = brw->tcs.base.prog_data;
161 brw_upload_binding_table(brw,
162 _3DSTATE_BINDING_TABLE_POINTERS_HS,
163 prog_data,
164 &brw->tcs.base);
165 }
166
167 const struct brw_tracked_state brw_tcs_binding_table = {
168 .dirty = {
169 .mesa = 0,
170 .brw = BRW_NEW_BATCH |
171 BRW_NEW_BLORP |
172 BRW_NEW_DEFAULT_TESS_LEVELS |
173 BRW_NEW_SURFACES |
174 BRW_NEW_TCS_CONSTBUF |
175 BRW_NEW_TCS_PROG_DATA,
176 },
177 .emit = brw_tcs_upload_binding_table,
178 };
179
180 /** Upload the TES binding table (if TES is active). */
181 static void
brw_tes_upload_binding_table(struct brw_context * brw)182 brw_tes_upload_binding_table(struct brw_context *brw)
183 {
184 /* If there's no TES, skip changing anything. */
185 if (brw->programs[MESA_SHADER_TESS_EVAL] == NULL)
186 return;
187
188 /* BRW_NEW_TES_PROG_DATA */
189 const struct brw_stage_prog_data *prog_data = brw->tes.base.prog_data;
190 brw_upload_binding_table(brw,
191 _3DSTATE_BINDING_TABLE_POINTERS_DS,
192 prog_data,
193 &brw->tes.base);
194 }
195
196 const struct brw_tracked_state brw_tes_binding_table = {
197 .dirty = {
198 .mesa = 0,
199 .brw = BRW_NEW_BATCH |
200 BRW_NEW_BLORP |
201 BRW_NEW_SURFACES |
202 BRW_NEW_TES_CONSTBUF |
203 BRW_NEW_TES_PROG_DATA,
204 },
205 .emit = brw_tes_upload_binding_table,
206 };
207
208 /** Upload the GS binding table (if GS is active). */
209 static void
brw_gs_upload_binding_table(struct brw_context * brw)210 brw_gs_upload_binding_table(struct brw_context *brw)
211 {
212 /* If there's no GS, skip changing anything. */
213 if (brw->programs[MESA_SHADER_GEOMETRY] == NULL)
214 return;
215
216 /* BRW_NEW_GS_PROG_DATA */
217 const struct brw_stage_prog_data *prog_data = brw->gs.base.prog_data;
218 brw_upload_binding_table(brw,
219 _3DSTATE_BINDING_TABLE_POINTERS_GS,
220 prog_data,
221 &brw->gs.base);
222 }
223
224 const struct brw_tracked_state brw_gs_binding_table = {
225 .dirty = {
226 .mesa = 0,
227 .brw = BRW_NEW_BATCH |
228 BRW_NEW_BLORP |
229 BRW_NEW_GS_CONSTBUF |
230 BRW_NEW_GS_PROG_DATA |
231 BRW_NEW_SURFACES,
232 },
233 .emit = brw_gs_upload_binding_table,
234 };
235 /** @} */
236
237 /**
238 * State atoms which emit 3DSTATE packets to update the binding table pointers.
239 * @{
240 */
241
242 /**
243 * (Gfx4-5) Upload the binding table pointers for all shader stages.
244 *
245 * The binding table pointers are relative to the surface state base address,
246 * which points at the batchbuffer containing the streamed batch state.
247 */
248 static void
gfx4_upload_binding_table_pointers(struct brw_context * brw)249 gfx4_upload_binding_table_pointers(struct brw_context *brw)
250 {
251 BEGIN_BATCH(6);
252 OUT_BATCH(_3DSTATE_BINDING_TABLE_POINTERS << 16 | (6 - 2));
253 OUT_BATCH(brw->vs.base.bind_bo_offset);
254 OUT_BATCH(0); /* gs */
255 OUT_BATCH(0); /* clip */
256 OUT_BATCH(0); /* sf */
257 OUT_BATCH(brw->wm.base.bind_bo_offset);
258 ADVANCE_BATCH();
259 }
260
261 const struct brw_tracked_state brw_binding_table_pointers = {
262 .dirty = {
263 .mesa = 0,
264 .brw = BRW_NEW_BATCH |
265 BRW_NEW_BLORP |
266 BRW_NEW_BINDING_TABLE_POINTERS |
267 BRW_NEW_STATE_BASE_ADDRESS,
268 },
269 .emit = gfx4_upload_binding_table_pointers,
270 };
271
272 /**
273 * (Sandybridge Only) Upload the binding table pointers for all shader stages.
274 *
275 * The binding table pointers are relative to the surface state base address,
276 * which points at the batchbuffer containing the streamed batch state.
277 */
278 static void
gfx6_upload_binding_table_pointers(struct brw_context * brw)279 gfx6_upload_binding_table_pointers(struct brw_context *brw)
280 {
281 BEGIN_BATCH(4);
282 OUT_BATCH(_3DSTATE_BINDING_TABLE_POINTERS << 16 |
283 GFX6_BINDING_TABLE_MODIFY_VS |
284 GFX6_BINDING_TABLE_MODIFY_GS |
285 GFX6_BINDING_TABLE_MODIFY_PS |
286 (4 - 2));
287 OUT_BATCH(brw->vs.base.bind_bo_offset); /* vs */
288 if (brw->ff_gs.prog_active)
289 OUT_BATCH(brw->ff_gs.bind_bo_offset); /* gs */
290 else
291 OUT_BATCH(brw->gs.base.bind_bo_offset); /* gs */
292 OUT_BATCH(brw->wm.base.bind_bo_offset); /* wm/ps */
293 ADVANCE_BATCH();
294 }
295
296 const struct brw_tracked_state gfx6_binding_table_pointers = {
297 .dirty = {
298 .mesa = 0,
299 .brw = BRW_NEW_BATCH |
300 BRW_NEW_BLORP |
301 BRW_NEW_BINDING_TABLE_POINTERS |
302 BRW_NEW_STATE_BASE_ADDRESS,
303 },
304 .emit = gfx6_upload_binding_table_pointers,
305 };
306
307 /** @} */
308