src/mesa/drivers/dri/i965/brw_binding_tables.c

   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 "intel_batchbuffer.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
  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    if (prog_data->binding_table.size_bytes == 0) {
  60       /* There are no surfaces; skip making the binding table altogether. */
  61       if (stage_state->bind_bo_offset == 0 && brw->gen < 9)
  62          return;
  63
  64       stage_state->bind_bo_offset = 0;
  65    } else {
  66       /* Upload a new binding table. */
  67       if (INTEL_DEBUG & DEBUG_SHADER_TIME) {
  68          brw_emit_buffer_surface_state(
  69             brw, &stage_state->surf_offset[
  70                     prog_data->binding_table.shader_time_start],
  71             brw->shader_time.bo, 0, ISL_FORMAT_RAW,
  72             brw->shader_time.bo->size, 1, true);
  73       }
  74       uint32_t *bind = brw_state_batch(brw, AUB_TRACE_BINDING_TABLE,
  75                                        prog_data->binding_table.size_bytes,
  76                                        32,
  77                                        &stage_state->bind_bo_offset);
  78
  79       /* BRW_NEW_SURFACES and BRW_NEW_*_CONSTBUF */
  80       memcpy(bind, stage_state->surf_offset,
  81              prog_data->binding_table.size_bytes);
  82    }
  83
  84    brw->ctx.NewDriverState |= BRW_NEW_BINDING_TABLE_POINTERS;
  85
  86    if (brw->gen >= 7) {
  87       BEGIN_BATCH(2);
  88       OUT_BATCH(packet_name << 16 | (2 - 2));
  89       /* Align SurfaceStateOffset[16:6] format to [15:5] PS Binding Table field
  90        * when hw-generated binding table is enabled.
  91        */
  92       OUT_BATCH(stage_state->bind_bo_offset);
  93       ADVANCE_BATCH();
  94    }
  95 }
  96
  97 /**
  98  * State atoms which upload the binding table for a particular shader stage.
  99  *  @{
 100  */
 101
 102 /** Upload the VS binding table. */
 103 static void
 104 brw_vs_upload_binding_table(struct brw_context *brw)
 105 {
 106    /* BRW_NEW_VS_PROG_DATA */
 107    const struct brw_stage_prog_data *prog_data = brw->vs.base.prog_data;
 108    brw_upload_binding_table(brw,
 109                             _3DSTATE_BINDING_TABLE_POINTERS_VS,
 110                             prog_data,
 111                             &brw->vs.base);
 112 }
 113
 114 const struct brw_tracked_state brw_vs_binding_table = {
 115    .dirty = {
 116       .mesa = 0,
 117       .brw = BRW_NEW_BATCH |
 118              BRW_NEW_BLORP |
 119              BRW_NEW_VS_CONSTBUF |
 120              BRW_NEW_VS_PROG_DATA |
 121              BRW_NEW_SURFACES,
 122    },
 123    .emit = brw_vs_upload_binding_table,
 124 };
 125
 126
 127 /** Upload the PS binding table. */
 128 static void
 129 brw_upload_wm_binding_table(struct brw_context *brw)
 130 {
 131    /* BRW_NEW_FS_PROG_DATA */
 132    const struct brw_stage_prog_data *prog_data = brw->wm.base.prog_data;
 133    brw_upload_binding_table(brw,
 134                             _3DSTATE_BINDING_TABLE_POINTERS_PS,
 135                             prog_data,
 136                             &brw->wm.base);
 137 }
 138
 139 const struct brw_tracked_state brw_wm_binding_table = {
 140    .dirty = {
 141       .mesa = 0,
 142       .brw = BRW_NEW_BATCH |
 143              BRW_NEW_BLORP |
 144              BRW_NEW_FS_PROG_DATA |
 145              BRW_NEW_SURFACES,
 146    },
 147    .emit = brw_upload_wm_binding_table,
 148 };
 149
 150 /** Upload the TCS binding table (if tessellation stages are active). */
 151 static void
 152 brw_tcs_upload_binding_table(struct brw_context *brw)
 153 {
 154    /* Skip if the tessellation stages are disabled. */
 155    if (brw->tess_eval_program == NULL)
 156       return;
 157
 158    /* BRW_NEW_TCS_PROG_DATA */
 159    const struct brw_stage_prog_data *prog_data = brw->tcs.base.prog_data;
 160    brw_upload_binding_table(brw,
 161                             _3DSTATE_BINDING_TABLE_POINTERS_HS,
 162                             prog_data,
 163                             &brw->tcs.base);
 164 }
 165
 166 const struct brw_tracked_state brw_tcs_binding_table = {
 167    .dirty = {
 168       .mesa = 0,
 169       .brw = BRW_NEW_BATCH |
 170              BRW_NEW_BLORP |
 171              BRW_NEW_DEFAULT_TESS_LEVELS |
 172              BRW_NEW_SURFACES |
 173              BRW_NEW_TCS_CONSTBUF |
 174              BRW_NEW_TCS_PROG_DATA,
 175    },
 176    .emit = brw_tcs_upload_binding_table,
 177 };
 178
 179 /** Upload the TES binding table (if TES is active). */
 180 static void
 181 brw_tes_upload_binding_table(struct brw_context *brw)
 182 {
 183    /* If there's no TES, skip changing anything. */
 184    if (brw->tess_eval_program == NULL)
 185       return;
 186
 187    /* BRW_NEW_TES_PROG_DATA */
 188    const struct brw_stage_prog_data *prog_data = brw->tes.base.prog_data;
 189    brw_upload_binding_table(brw,
 190                             _3DSTATE_BINDING_TABLE_POINTERS_DS,
 191                             prog_data,
 192                             &brw->tes.base);
 193 }
 194
 195 const struct brw_tracked_state brw_tes_binding_table = {
 196    .dirty = {
 197       .mesa = 0,
 198       .brw = BRW_NEW_BATCH |
 199              BRW_NEW_BLORP |
 200              BRW_NEW_SURFACES |
 201              BRW_NEW_TES_CONSTBUF |
 202              BRW_NEW_TES_PROG_DATA,
 203    },
 204    .emit = brw_tes_upload_binding_table,
 205 };
 206
 207 /** Upload the GS binding table (if GS is active). */
 208 static void
 209 brw_gs_upload_binding_table(struct brw_context *brw)
 210 {
 211    /* If there's no GS, skip changing anything. */
 212    if (brw->geometry_program == NULL)
 213       return;
 214
 215    /* BRW_NEW_GS_PROG_DATA */
 216    const struct brw_stage_prog_data *prog_data = brw->gs.base.prog_data;
 217    brw_upload_binding_table(brw,
 218                             _3DSTATE_BINDING_TABLE_POINTERS_GS,
 219                             prog_data,
 220                             &brw->gs.base);
 221 }
 222
 223 const struct brw_tracked_state brw_gs_binding_table = {
 224    .dirty = {
 225       .mesa = 0,
 226       .brw = BRW_NEW_BATCH |
 227              BRW_NEW_BLORP |
 228              BRW_NEW_GS_CONSTBUF |
 229              BRW_NEW_GS_PROG_DATA |
 230              BRW_NEW_SURFACES,
 231    },
 232    .emit = brw_gs_upload_binding_table,
 233 };
 234 /** @} */
 235
 236 /**
 237  * State atoms which emit 3DSTATE packets to update the binding table pointers.
 238  *  @{
 239  */
 240
 241 /**
 242  * (Gen4-5) Upload the binding table pointers for all shader stages.
 243  *
 244  * The binding table pointers are relative to the surface state base address,
 245  * which points at the batchbuffer containing the streamed batch state.
 246  */
 247 static void
 248 gen4_upload_binding_table_pointers(struct brw_context *brw)
 249 {
 250    BEGIN_BATCH(6);
 251    OUT_BATCH(_3DSTATE_BINDING_TABLE_POINTERS << 16 | (6 - 2));
 252    OUT_BATCH(brw->vs.base.bind_bo_offset);
 253    OUT_BATCH(0); /* gs */
 254    OUT_BATCH(0); /* clip */
 255    OUT_BATCH(0); /* sf */
 256    OUT_BATCH(brw->wm.base.bind_bo_offset);
 257    ADVANCE_BATCH();
 258 }
 259
 260 const struct brw_tracked_state brw_binding_table_pointers = {
 261    .dirty = {
 262       .mesa = 0,
 263       .brw = BRW_NEW_BATCH |
 264              BRW_NEW_BLORP |
 265              BRW_NEW_BINDING_TABLE_POINTERS |
 266              BRW_NEW_STATE_BASE_ADDRESS,
 267    },
 268    .emit = gen4_upload_binding_table_pointers,
 269 };
 270
 271 /**
 272  * (Sandybridge Only) Upload the binding table pointers for all shader stages.
 273  *
 274  * The binding table pointers are relative to the surface state base address,
 275  * which points at the batchbuffer containing the streamed batch state.
 276  */
 277 static void
 278 gen6_upload_binding_table_pointers(struct brw_context *brw)
 279 {
 280    BEGIN_BATCH(4);
 281    OUT_BATCH(_3DSTATE_BINDING_TABLE_POINTERS << 16 |
 282              GEN6_BINDING_TABLE_MODIFY_VS |
 283              GEN6_BINDING_TABLE_MODIFY_GS |
 284              GEN6_BINDING_TABLE_MODIFY_PS |
 285              (4 - 2));
 286    OUT_BATCH(brw->vs.base.bind_bo_offset); /* vs */
 287    if (brw->ff_gs.prog_active)
 288       OUT_BATCH(brw->ff_gs.bind_bo_offset); /* gs */
 289    else
 290       OUT_BATCH(brw->gs.base.bind_bo_offset); /* gs */
 291    OUT_BATCH(brw->wm.base.bind_bo_offset); /* wm/ps */
 292    ADVANCE_BATCH();
 293 }
 294
 295 const struct brw_tracked_state gen6_binding_table_pointers = {
 296    .dirty = {
 297       .mesa = 0,
 298       .brw = BRW_NEW_BATCH |
 299              BRW_NEW_BLORP |
 300              BRW_NEW_BINDING_TABLE_POINTERS |
 301              BRW_NEW_STATE_BASE_ADDRESS,
 302    },
 303    .emit = gen6_upload_binding_table_pointers,
 304 };
 305
 306 /** @} */