src/gallium/drivers/nv40/nv40_vbo.c

   1 #include "pipe/p_context.h"
   2 #include "pipe/p_state.h"
   3 #include "pipe/p_inlines.h"
   4
   5 #include "nv40_context.h"
   6 #include "nv40_state.h"
   7
   8 #include "nouveau/nouveau_channel.h"
   9 #include "nouveau/nouveau_pushbuf.h"
  10 #include "nouveau/nouveau_util.h"
  11
  12 #define FORCE_SWTNL 0
  13
  14 static INLINE int
  15 nv40_vbo_format_to_hw(enum pipe_format pipe, unsigned *fmt, unsigned *ncomp)
  16 {
  17         switch (pipe) {
  18         case PIPE_FORMAT_R32_FLOAT:
  19         case PIPE_FORMAT_R32G32_FLOAT:
  20         case PIPE_FORMAT_R32G32B32_FLOAT:
  21         case PIPE_FORMAT_R32G32B32A32_FLOAT:
  22                 *fmt = NV40TCL_VTXFMT_TYPE_FLOAT;
  23                 break;
  24         case PIPE_FORMAT_R8_UNORM:
  25         case PIPE_FORMAT_R8G8_UNORM:
  26         case PIPE_FORMAT_R8G8B8_UNORM:
  27         case PIPE_FORMAT_R8G8B8A8_UNORM:
  28                 *fmt = NV40TCL_VTXFMT_TYPE_UBYTE;
  29                 break;
  30         case PIPE_FORMAT_R16_SSCALED:
  31         case PIPE_FORMAT_R16G16_SSCALED:
  32         case PIPE_FORMAT_R16G16B16_SSCALED:
  33         case PIPE_FORMAT_R16G16B16A16_SSCALED:
  34                 *fmt = NV40TCL_VTXFMT_TYPE_USHORT;
  35                 break;
  36         default:
  37                 NOUVEAU_ERR("Unknown format %s\n", pf_name(pipe));
  38                 return 1;
  39         }
  40
  41         switch (pipe) {
  42         case PIPE_FORMAT_R8_UNORM:
  43         case PIPE_FORMAT_R32_FLOAT:
  44         case PIPE_FORMAT_R16_SSCALED:
  45                 *ncomp = 1;
  46                 break;
  47         case PIPE_FORMAT_R8G8_UNORM:
  48         case PIPE_FORMAT_R32G32_FLOAT:
  49         case PIPE_FORMAT_R16G16_SSCALED:
  50                 *ncomp = 2;
  51                 break;
  52         case PIPE_FORMAT_R8G8B8_UNORM:
  53         case PIPE_FORMAT_R32G32B32_FLOAT:
  54         case PIPE_FORMAT_R16G16B16_SSCALED:
  55                 *ncomp = 3;
  56                 break;
  57         case PIPE_FORMAT_R8G8B8A8_UNORM:
  58         case PIPE_FORMAT_R32G32B32A32_FLOAT:
  59         case PIPE_FORMAT_R16G16B16A16_SSCALED:
  60                 *ncomp = 4;
  61                 break;
  62         default:
  63                 NOUVEAU_ERR("Unknown format %s\n", pf_name(pipe));
  64                 return 1;
  65         }
  66
  67         return 0;
  68 }
  69
  70 static boolean
  71 nv40_vbo_set_idxbuf(struct nv40_context *nv40, struct pipe_buffer *ib,
  72                     unsigned ib_size)
  73 {
  74         struct pipe_screen *pscreen = &nv40->screen->base.base;
  75         unsigned type;
  76
  77         if (!ib) {
  78                 nv40->idxbuf = NULL;
  79                 nv40->idxbuf_format = 0xdeadbeef;
  80                 return FALSE;
  81         }
  82
  83         if (!pscreen->get_param(pscreen, NOUVEAU_CAP_HW_IDXBUF) || ib_size == 1)
  84                 return FALSE;
  85
  86         switch (ib_size) {
  87         case 2:
  88                 type = NV40TCL_IDXBUF_FORMAT_TYPE_U16;
  89                 break;
  90         case 4:
  91                 type = NV40TCL_IDXBUF_FORMAT_TYPE_U32;
  92                 break;
  93         default:
  94                 return FALSE;
  95         }
  96
  97         if (ib != nv40->idxbuf ||
  98             type != nv40->idxbuf_format) {
  99                 nv40->dirty |= NV40_NEW_ARRAYS;
 100                 nv40->idxbuf = ib;
 101                 nv40->idxbuf_format = type;
 102         }
 103
 104         return TRUE;
 105 }
 106
 107 static boolean
 108 nv40_vbo_static_attrib(struct nv40_context *nv40, struct nouveau_stateobj *so,
 109                        int attrib, struct pipe_vertex_element *ve,
 110                        struct pipe_vertex_buffer *vb)
 111 {
 112         struct pipe_screen *pscreen = nv40->pipe.screen;
 113         struct nouveau_grobj *curie = nv40->screen->curie;
 114         unsigned type, ncomp;
 115         void *map;
 116
 117         if (nv40_vbo_format_to_hw(ve->src_format, &type, &ncomp))
 118                 return FALSE;
 119
 120         map  = pipe_buffer_map(pscreen, vb->buffer, PIPE_BUFFER_USAGE_CPU_READ);
 121         map += vb->buffer_offset + ve->src_offset;
 122
 123         switch (type) {
 124         case NV40TCL_VTXFMT_TYPE_FLOAT:
 125         {
 126                 float *v = map;
 127
 128                 switch (ncomp) {
 129                 case 4:
 130                         so_method(so, curie, NV40TCL_VTX_ATTR_4F_X(attrib), 4);
 131                         so_data  (so, fui(v[0]));
 132                         so_data  (so, fui(v[1]));
 133                         so_data  (so, fui(v[2]));
 134                         so_data  (so, fui(v[3]));
 135                         break;
 136                 case 3:
 137                         so_method(so, curie, NV40TCL_VTX_ATTR_3F_X(attrib), 3);
 138                         so_data  (so, fui(v[0]));
 139                         so_data  (so, fui(v[1]));
 140                         so_data  (so, fui(v[2]));
 141                         break;
 142                 case 2:
 143                         so_method(so, curie, NV40TCL_VTX_ATTR_2F_X(attrib), 2);
 144                         so_data  (so, fui(v[0]));
 145                         so_data  (so, fui(v[1]));
 146                         break;
 147                 case 1:
 148                         so_method(so, curie, NV40TCL_VTX_ATTR_1F(attrib), 1);
 149                         so_data  (so, fui(v[0]));
 150                         break;
 151                 default:
 152                         pipe_buffer_unmap(pscreen, vb->buffer);
 153                         return FALSE;
 154                 }
 155         }
 156                 break;
 157         default:
 158                 pipe_buffer_unmap(pscreen, vb->buffer);
 159                 return FALSE;
 160         }
 161
 162         pipe_buffer_unmap(pscreen, vb->buffer);
 163
 164         return TRUE;
 165 }
 166
 167 void
 168 nv40_draw_arrays(struct pipe_context *pipe,
 169                  unsigned mode, unsigned start, unsigned count)
 170 {
 171         struct nv40_context *nv40 = nv40_context(pipe);
 172         struct nv40_screen *screen = nv40->screen;
 173         struct nouveau_channel *chan = screen->base.channel;
 174         struct nouveau_grobj *curie = screen->curie;
 175         unsigned restart;
 176
 177         nv40_vbo_set_idxbuf(nv40, NULL, 0);
 178         if (FORCE_SWTNL || !nv40_state_validate(nv40)) {
 179                 nv40_draw_elements_swtnl(pipe, NULL, 0,
 180                                          mode, start, count);
 181                 return;
 182         }
 183
 184         while (count) {
 185                 unsigned vc, nr;
 186
 187                 nv40_state_emit(nv40);
 188
 189                 vc = nouveau_vbuf_split(chan->pushbuf->remaining, 6, 256,
 190                                         mode, start, count, &restart);
 191                 if (!vc) {
 192                         FIRE_RING(chan);
 193                         continue;
 194                 }
 195
 196                 BEGIN_RING(chan, curie, NV40TCL_BEGIN_END, 1);
 197                 OUT_RING  (chan, nvgl_primitive(mode));
 198
 199                 nr = (vc & 0xff);
 200                 if (nr) {
 201                         BEGIN_RING(chan, curie, NV40TCL_VB_VERTEX_BATCH, 1);
 202                         OUT_RING  (chan, ((nr - 1) << 24) | start);
 203                         start += nr;
 204                 }
 205
 206                 nr = vc >> 8;
 207                 while (nr) {
 208                         unsigned push = nr > 2047 ? 2047 : nr;
 209
 210                         nr -= push;
 211
 212                         BEGIN_RING_NI(chan, curie, NV40TCL_VB_VERTEX_BATCH, push);
 213                         while (push--) {
 214                                 OUT_RING(chan, ((0x100 - 1) << 24) | start);
 215                                 start += 0x100;
 216                         }
 217                 }
 218
 219                 BEGIN_RING(chan, curie, NV40TCL_BEGIN_END, 1);
 220                 OUT_RING  (chan, 0);
 221
 222                 count -= vc;
 223                 start = restart;
 224         }
 225
 226         pipe->flush(pipe, 0, NULL);
 227 }
 228
 229 static INLINE void
 230 nv40_draw_elements_u08(struct nv40_context *nv40, void *ib,
 231                        unsigned mode, unsigned start, unsigned count)
 232 {
 233         struct nv40_screen *screen = nv40->screen;
 234         struct nouveau_channel *chan = screen->base.channel;
 235         struct nouveau_grobj *curie = screen->curie;
 236
 237         while (count) {
 238                 uint8_t *elts = (uint8_t *)ib + start;
 239                 unsigned vc, push, restart;
 240
 241                 nv40_state_emit(nv40);
 242
 243                 vc = nouveau_vbuf_split(chan->pushbuf->remaining, 6, 2,
 244                                         mode, start, count, &restart);
 245                 if (vc == 0) {
 246                         FIRE_RING(chan);
 247                         continue;
 248                 }
 249                 count -= vc;
 250
 251                 BEGIN_RING(chan, curie, NV40TCL_BEGIN_END, 1);
 252                 OUT_RING  (chan, nvgl_primitive(mode));
 253
 254                 if (vc & 1) {
 255                         BEGIN_RING(chan, curie, NV40TCL_VB_ELEMENT_U32, 1);
 256                         OUT_RING  (chan, elts[0]);
 257                         elts++; vc--;
 258                 }
 259
 260                 while (vc) {
 261                         unsigned i;
 262
 263                         push = MIN2(vc, 2047 * 2);
 264
 265                         BEGIN_RING_NI(chan, curie, NV40TCL_VB_ELEMENT_U16, push >> 1);
 266                         for (i = 0; i < push; i+=2)
 267                                 OUT_RING(chan, (elts[i+1] << 16) | elts[i]);
 268
 269                         vc -= push;
 270                         elts += push;
 271                 }
 272
 273                 BEGIN_RING(chan, curie, NV40TCL_BEGIN_END, 1);
 274                 OUT_RING  (chan, 0);
 275
 276                 start = restart;
 277         }
 278 }
 279
 280 static INLINE void
 281 nv40_draw_elements_u16(struct nv40_context *nv40, void *ib,
 282                        unsigned mode, unsigned start, unsigned count)
 283 {
 284         struct nv40_screen *screen = nv40->screen;
 285         struct nouveau_channel *chan = screen->base.channel;
 286         struct nouveau_grobj *curie = screen->curie;
 287
 288         while (count) {
 289                 uint16_t *elts = (uint16_t *)ib + start;
 290                 unsigned vc, push, restart;
 291
 292                 nv40_state_emit(nv40);
 293
 294                 vc = nouveau_vbuf_split(chan->pushbuf->remaining, 6, 2,
 295                                         mode, start, count, &restart);
 296                 if (vc == 0) {
 297                         FIRE_RING(chan);
 298                         continue;
 299                 }
 300                 count -= vc;
 301
 302                 BEGIN_RING(chan, curie, NV40TCL_BEGIN_END, 1);
 303                 OUT_RING  (chan, nvgl_primitive(mode));
 304
 305                 if (vc & 1) {
 306                         BEGIN_RING(chan, curie, NV40TCL_VB_ELEMENT_U32, 1);
 307                         OUT_RING  (chan, elts[0]);
 308                         elts++; vc--;
 309                 }
 310
 311                 while (vc) {
 312                         unsigned i;
 313
 314                         push = MIN2(vc, 2047 * 2);
 315
 316                         BEGIN_RING_NI(chan, curie, NV40TCL_VB_ELEMENT_U16, push >> 1);
 317                         for (i = 0; i < push; i+=2)
 318                                 OUT_RING(chan, (elts[i+1] << 16) | elts[i]);
 319
 320                         vc -= push;
 321                         elts += push;
 322                 }
 323
 324                 BEGIN_RING(chan, curie, NV40TCL_BEGIN_END, 1);
 325                 OUT_RING  (chan, 0);
 326
 327                 start = restart;
 328         }
 329 }
 330
 331 static INLINE void
 332 nv40_draw_elements_u32(struct nv40_context *nv40, void *ib,
 333                        unsigned mode, unsigned start, unsigned count)
 334 {
 335         struct nv40_screen *screen = nv40->screen;
 336         struct nouveau_channel *chan = screen->base.channel;
 337         struct nouveau_grobj *curie = screen->curie;
 338
 339         while (count) {
 340                 uint32_t *elts = (uint32_t *)ib + start;
 341                 unsigned vc, push, restart;
 342
 343                 nv40_state_emit(nv40);
 344
 345                 vc = nouveau_vbuf_split(chan->pushbuf->remaining, 5, 1,
 346                                         mode, start, count, &restart);
 347                 if (vc == 0) {
 348                         FIRE_RING(chan);
 349                         continue;
 350                 }
 351                 count -= vc;
 352
 353                 BEGIN_RING(chan, curie, NV40TCL_BEGIN_END, 1);
 354                 OUT_RING  (chan, nvgl_primitive(mode));
 355
 356                 while (vc) {
 357                         push = MIN2(vc, 2047);
 358
 359                         BEGIN_RING_NI(chan, curie, NV40TCL_VB_ELEMENT_U32, push);
 360                         OUT_RINGp    (chan, elts, push);
 361
 362                         vc -= push;
 363                         elts += push;
 364                 }
 365
 366                 BEGIN_RING(chan, curie, NV40TCL_BEGIN_END, 1);
 367                 OUT_RING  (chan, 0);
 368
 369                 start = restart;
 370         }
 371 }
 372
 373 static void
 374 nv40_draw_elements_inline(struct pipe_context *pipe,
 375                           struct pipe_buffer *ib, unsigned ib_size,
 376                           unsigned mode, unsigned start, unsigned count)
 377 {
 378         struct nv40_context *nv40 = nv40_context(pipe);
 379         struct pipe_screen *pscreen = pipe->screen;
 380         void *map;
 381
 382         map = pipe_buffer_map(pscreen, ib, PIPE_BUFFER_USAGE_CPU_READ);
 383         if (!ib) {
 384                 NOUVEAU_ERR("failed mapping ib\n");
 385                 return FALSE;
 386         }
 387
 388         switch (ib_size) {
 389         case 1:
 390                 nv40_draw_elements_u08(nv40, map, mode, start, count);
 391                 break;
 392         case 2:
 393                 nv40_draw_elements_u16(nv40, map, mode, start, count);
 394                 break;
 395         case 4:
 396                 nv40_draw_elements_u32(nv40, map, mode, start, count);
 397                 break;
 398         default:
 399                 NOUVEAU_ERR("invalid idxbuf fmt %d\n", ib_size);
 400                 break;
 401         }
 402
 403         pipe_buffer_unmap(pscreen, ib);
 404 }
 405
 406 static void
 407 nv40_draw_elements_vbo(struct pipe_context *pipe,
 408                        unsigned mode, unsigned start, unsigned count)
 409 {
 410         struct nv40_context *nv40 = nv40_context(pipe);
 411         struct nv40_screen *screen = nv40->screen;
 412         struct nouveau_channel *chan = screen->base.channel;
 413         struct nouveau_grobj *curie = screen->curie;
 414         unsigned restart;
 415
 416         while (count) {
 417                 unsigned nr, vc;
 418
 419                 nv40_state_emit(nv40);
 420
 421                 vc = nouveau_vbuf_split(chan->pushbuf->remaining, 6, 256,
 422                                         mode, start, count, &restart);
 423                 if (!vc) {
 424                         FIRE_RING(chan);
 425                         continue;
 426                 }
 427
 428                 BEGIN_RING(chan, curie, NV40TCL_BEGIN_END, 1);
 429                 OUT_RING  (chan, nvgl_primitive(mode));
 430
 431                 nr = (vc & 0xff);
 432                 if (nr) {
 433                         BEGIN_RING(chan, curie, NV40TCL_VB_INDEX_BATCH, 1);
 434                         OUT_RING  (chan, ((nr - 1) << 24) | start);
 435                         start += nr;
 436                 }
 437
 438                 nr = vc >> 8;
 439                 while (nr) {
 440                         unsigned push = nr > 2047 ? 2047 : nr;
 441
 442                         nr -= push;
 443
 444                         BEGIN_RING_NI(chan, curie, NV40TCL_VB_INDEX_BATCH, push);
 445                         while (push--) {
 446                                 OUT_RING(chan, ((0x100 - 1) << 24) | start);
 447                                 start += 0x100;
 448                         }
 449                 }
 450
 451                 BEGIN_RING(chan, curie, NV40TCL_BEGIN_END, 1);
 452                 OUT_RING  (chan, 0);
 453
 454                 count -= vc;
 455                 start = restart;
 456         }
 457 }
 458
 459 void
 460 nv40_draw_elements(struct pipe_context *pipe,
 461                    struct pipe_buffer *indexBuffer, unsigned indexSize,
 462                    unsigned mode, unsigned start, unsigned count)
 463 {
 464         struct nv40_context *nv40 = nv40_context(pipe);
 465         boolean idxbuf;
 466
 467         idxbuf = nv40_vbo_set_idxbuf(nv40, indexBuffer, indexSize);
 468         if (FORCE_SWTNL || !nv40_state_validate(nv40)) {
 469                 nv40_draw_elements_swtnl(pipe, NULL, 0,
 470                                          mode, start, count);
 471                 return;
 472         }
 473
 474         if (idxbuf) {
 475                 nv40_draw_elements_vbo(pipe, mode, start, count);
 476         } else {
 477                 nv40_draw_elements_inline(pipe, indexBuffer, indexSize,
 478                                           mode, start, count);
 479         }
 480
 481         pipe->flush(pipe, 0, NULL);
 482 }
 483
 484 static boolean
 485 nv40_vbo_validate(struct nv40_context *nv40)
 486 {
 487         struct nouveau_stateobj *vtxbuf, *vtxfmt, *sattr = NULL;
 488         struct nouveau_grobj *curie = nv40->screen->curie;
 489         struct pipe_buffer *ib = nv40->idxbuf;
 490         unsigned ib_format = nv40->idxbuf_format;
 491         unsigned vb_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD;
 492         int hw;
 493
 494         vtxbuf = so_new(20, 18);
 495         so_method(vtxbuf, curie, NV40TCL_VTXBUF_ADDRESS(0), nv40->vtxelt_nr);
 496         vtxfmt = so_new(17, 0);
 497         so_method(vtxfmt, curie, NV40TCL_VTXFMT(0), nv40->vtxelt_nr);
 498
 499         for (hw = 0; hw < nv40->vtxelt_nr; hw++) {
 500                 struct pipe_vertex_element *ve;
 501                 struct pipe_vertex_buffer *vb;
 502                 unsigned type, ncomp;
 503
 504                 ve = &nv40->vtxelt[hw];
 505                 vb = &nv40->vtxbuf[ve->vertex_buffer_index];
 506
 507                 if (!vb->stride) {
 508                         if (!sattr)
 509                                 sattr = so_new(16 * 5, 0);
 510
 511                         if (nv40_vbo_static_attrib(nv40, sattr, hw, ve, vb)) {
 512                                 so_data(vtxbuf, 0);
 513                                 so_data(vtxfmt, NV40TCL_VTXFMT_TYPE_FLOAT);
 514                                 continue;
 515                         }
 516                 }
 517
 518                 if (nv40_vbo_format_to_hw(ve->src_format, &type, &ncomp)) {
 519                         nv40->fallback_swtnl |= NV40_NEW_ARRAYS;
 520                         so_ref(NULL, &vtxbuf);
 521                         so_ref(NULL, &vtxfmt);
 522                         return FALSE;
 523                 }
 524
 525                 so_reloc(vtxbuf, nouveau_bo(vb->buffer),
 526                                  vb->buffer_offset + ve->src_offset,
 527                                  vb_flags | NOUVEAU_BO_LOW | NOUVEAU_BO_OR,
 528                                  0, NV40TCL_VTXBUF_ADDRESS_DMA1);
 529                 so_data (vtxfmt, ((vb->stride << NV40TCL_VTXFMT_STRIDE_SHIFT) |
 530                                   (ncomp << NV40TCL_VTXFMT_SIZE_SHIFT) | type));
 531         }
 532
 533         if (ib) {
 534                 struct nouveau_bo *bo = nouveau_bo(ib);
 535
 536                 so_method(vtxbuf, curie, NV40TCL_IDXBUF_ADDRESS, 2);
 537                 so_reloc (vtxbuf, bo, 0, vb_flags | NOUVEAU_BO_LOW, 0, 0);
 538                 so_reloc (vtxbuf, bo, ib_format, vb_flags | NOUVEAU_BO_OR,
 539                           0, NV40TCL_IDXBUF_FORMAT_DMA1);
 540         }
 541
 542         so_method(vtxbuf, curie, 0x1710, 1);
 543         so_data  (vtxbuf, 0);
 544
 545         so_ref(vtxbuf, &nv40->state.hw[NV40_STATE_VTXBUF]);
 546         so_ref(NULL, &vtxbuf);
 547         nv40->state.dirty |= (1ULL << NV40_STATE_VTXBUF);
 548         so_ref(vtxfmt, &nv40->state.hw[NV40_STATE_VTXFMT]);
 549         so_ref(NULL, &vtxfmt);
 550         nv40->state.dirty |= (1ULL << NV40_STATE_VTXFMT);
 551         so_ref(sattr, &nv40->state.hw[NV40_STATE_VTXATTR]);
 552         so_ref(NULL, &sattr);
 553         nv40->state.dirty |= (1ULL << NV40_STATE_VTXATTR);
 554         return FALSE;
 555 }
 556
 557 struct nv40_state_entry nv40_state_vbo = {
 558         .validate = nv40_vbo_validate,
 559         .dirty = {
 560                 .pipe = NV40_NEW_ARRAYS,
 561                 .hw = 0,
 562         }
 563 };
 564