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