src/gallium/drivers/nvfx/nvfx_vbo.c

   1 #include "pipe/p_context.h"
   2 #include "pipe/p_state.h"
   3 #include "util/u_inlines.h"
   4 #include "util/u_format.h"
   5
   6 #include "nvfx_context.h"
   7 #include "nvfx_state.h"
   8
   9 #include "nouveau/nouveau_channel.h"
  10 #include "nouveau/nouveau_pushbuf.h"
  11 #include "nouveau/nouveau_util.h"
  12
  13 static boolean
  14 nvfx_force_swtnl(struct nvfx_context *nvfx)
  15 {
  16         static int force_swtnl = -1;
  17         if(force_swtnl < 0)
  18                 force_swtnl = debug_get_bool_option("NOUVEAU_SWTNL", 0);
  19         return force_swtnl;
  20 }
  21
  22 static INLINE int
  23 nvfx_vbo_format_to_hw(enum pipe_format pipe, unsigned *fmt, unsigned *ncomp)
  24 {
  25         switch (pipe) {
  26         case PIPE_FORMAT_R32_FLOAT:
  27         case PIPE_FORMAT_R32G32_FLOAT:
  28         case PIPE_FORMAT_R32G32B32_FLOAT:
  29         case PIPE_FORMAT_R32G32B32A32_FLOAT:
  30                 *fmt = NV34TCL_VTXFMT_TYPE_FLOAT;
  31                 break;
  32         case PIPE_FORMAT_R8_UNORM:
  33         case PIPE_FORMAT_R8G8_UNORM:
  34         case PIPE_FORMAT_R8G8B8_UNORM:
  35         case PIPE_FORMAT_R8G8B8A8_UNORM:
  36                 *fmt = NV34TCL_VTXFMT_TYPE_UBYTE;
  37                 break;
  38         case PIPE_FORMAT_R16_SSCALED:
  39         case PIPE_FORMAT_R16G16_SSCALED:
  40         case PIPE_FORMAT_R16G16B16_SSCALED:
  41         case PIPE_FORMAT_R16G16B16A16_SSCALED:
  42                 *fmt = NV34TCL_VTXFMT_TYPE_USHORT;
  43                 break;
  44         default:
  45                 NOUVEAU_ERR("Unknown format %s\n", util_format_name(pipe));
  46                 return 1;
  47         }
  48
  49         switch (pipe) {
  50         case PIPE_FORMAT_R8_UNORM:
  51         case PIPE_FORMAT_R32_FLOAT:
  52         case PIPE_FORMAT_R16_SSCALED:
  53                 *ncomp = 1;
  54                 break;
  55         case PIPE_FORMAT_R8G8_UNORM:
  56         case PIPE_FORMAT_R32G32_FLOAT:
  57         case PIPE_FORMAT_R16G16_SSCALED:
  58                 *ncomp = 2;
  59                 break;
  60         case PIPE_FORMAT_R8G8B8_UNORM:
  61         case PIPE_FORMAT_R32G32B32_FLOAT:
  62         case PIPE_FORMAT_R16G16B16_SSCALED:
  63                 *ncomp = 3;
  64                 break;
  65         case PIPE_FORMAT_R8G8B8A8_UNORM:
  66         case PIPE_FORMAT_R32G32B32A32_FLOAT:
  67         case PIPE_FORMAT_R16G16B16A16_SSCALED:
  68                 *ncomp = 4;
  69                 break;
  70         default:
  71                 NOUVEAU_ERR("Unknown format %s\n", util_format_name(pipe));
  72                 return 1;
  73         }
  74
  75         return 0;
  76 }
  77
  78 static boolean
  79 nvfx_vbo_set_idxbuf(struct nvfx_context *nvfx, struct pipe_buffer *ib,
  80                     unsigned ib_size)
  81 {
  82         struct pipe_screen *pscreen = &nvfx->screen->base.base;
  83         unsigned type;
  84
  85         if (!ib) {
  86                 nvfx->idxbuf = NULL;
  87                 nvfx->idxbuf_format = 0xdeadbeef;
  88                 return FALSE;
  89         }
  90
  91         if (!pscreen->get_param(pscreen, NOUVEAU_CAP_HW_IDXBUF) || ib_size == 1)
  92                 return FALSE;
  93
  94         switch (ib_size) {
  95         case 2:
  96                 type = NV34TCL_IDXBUF_FORMAT_TYPE_U16;
  97                 break;
  98         case 4:
  99                 type = NV34TCL_IDXBUF_FORMAT_TYPE_U32;
 100                 break;
 101         default:
 102                 return FALSE;
 103         }
 104
 105         if (ib != nvfx->idxbuf ||
 106             type != nvfx->idxbuf_format) {
 107                 nvfx->dirty |= NVFX_NEW_ARRAYS;
 108                 nvfx->idxbuf = ib;
 109                 nvfx->idxbuf_format = type;
 110         }
 111
 112         return TRUE;
 113 }
 114
 115 static boolean
 116 nvfx_vbo_static_attrib(struct nvfx_context *nvfx, struct nouveau_stateobj *so,
 117                        int attrib, struct pipe_vertex_element *ve,
 118                        struct pipe_vertex_buffer *vb)
 119 {
 120         struct pipe_screen *pscreen = nvfx->pipe.screen;
 121         struct nouveau_grobj *eng3d = nvfx->screen->eng3d;
 122         unsigned type, ncomp;
 123         void *map;
 124
 125         if (nvfx_vbo_format_to_hw(ve->src_format, &type, &ncomp))
 126                 return FALSE;
 127
 128         map  = pipe_buffer_map(pscreen, vb->buffer, PIPE_BUFFER_USAGE_CPU_READ);
 129         map += vb->buffer_offset + ve->src_offset;
 130
 131         switch (type) {
 132         case NV34TCL_VTXFMT_TYPE_FLOAT:
 133         {
 134                 float *v = map;
 135
 136                 switch (ncomp) {
 137                 case 4:
 138                         so_method(so, eng3d, NV34TCL_VTX_ATTR_4F_X(attrib), 4);
 139                         so_data  (so, fui(v[0]));
 140                         so_data  (so, fui(v[1]));
 141                         so_data  (so, fui(v[2]));
 142                         so_data  (so, fui(v[3]));
 143                         break;
 144                 case 3:
 145                         so_method(so, eng3d, NV34TCL_VTX_ATTR_3F_X(attrib), 3);
 146                         so_data  (so, fui(v[0]));
 147                         so_data  (so, fui(v[1]));
 148                         so_data  (so, fui(v[2]));
 149                         break;
 150                 case 2:
 151                         so_method(so, eng3d, NV34TCL_VTX_ATTR_2F_X(attrib), 2);
 152                         so_data  (so, fui(v[0]));
 153                         so_data  (so, fui(v[1]));
 154                         break;
 155                 case 1:
 156                         so_method(so, eng3d, NV34TCL_VTX_ATTR_1F(attrib), 1);
 157                         so_data  (so, fui(v[0]));
 158                         break;
 159                 default:
 160                         pipe_buffer_unmap(pscreen, vb->buffer);
 161                         return FALSE;
 162                 }
 163         }
 164                 break;
 165         default:
 166                 pipe_buffer_unmap(pscreen, vb->buffer);
 167                 return FALSE;
 168         }
 169
 170         pipe_buffer_unmap(pscreen, vb->buffer);
 171         return TRUE;
 172 }
 173
 174 void
 175 nvfx_draw_arrays(struct pipe_context *pipe,
 176                  unsigned mode, unsigned start, unsigned count)
 177 {
 178         struct nvfx_context *nvfx = nvfx_context(pipe);
 179         struct nvfx_screen *screen = nvfx->screen;
 180         struct nouveau_channel *chan = screen->base.channel;
 181         struct nouveau_grobj *eng3d = screen->eng3d;
 182         unsigned restart = 0;
 183
 184         nvfx_vbo_set_idxbuf(nvfx, NULL, 0);
 185         if (nvfx_force_swtnl(nvfx) || !nvfx_state_validate(nvfx)) {
 186                 nvfx_draw_elements_swtnl(pipe, NULL, 0,
 187                                            mode, start, count);
 188                 return;
 189         }
 190
 191         while (count) {
 192                 unsigned vc, nr;
 193
 194                 nvfx_state_emit(nvfx);
 195
 196                 vc = nouveau_vbuf_split(AVAIL_RING(chan), 6, 256,
 197                                         mode, start, count, &restart);
 198                 if (!vc) {
 199                         FIRE_RING(chan);
 200                         continue;
 201                 }
 202
 203                 BEGIN_RING(chan, eng3d, NV34TCL_VERTEX_BEGIN_END, 1);
 204                 OUT_RING  (chan, nvgl_primitive(mode));
 205
 206                 nr = (vc & 0xff);
 207                 if (nr) {
 208                         BEGIN_RING(chan, eng3d, NV34TCL_VB_VERTEX_BATCH, 1);
 209                         OUT_RING  (chan, ((nr - 1) << 24) | start);
 210                         start += nr;
 211                 }
 212
 213                 nr = vc >> 8;
 214                 while (nr) {
 215                         unsigned push = nr > 2047 ? 2047 : nr;
 216
 217                         nr -= push;
 218
 219                         BEGIN_RING_NI(chan, eng3d, NV34TCL_VB_VERTEX_BATCH, push);
 220                         while (push--) {
 221                                 OUT_RING(chan, ((0x100 - 1) << 24) | start);
 222                                 start += 0x100;
 223                         }
 224                 }
 225
 226                 BEGIN_RING(chan, eng3d, NV34TCL_VERTEX_BEGIN_END, 1);
 227                 OUT_RING  (chan, 0);
 228
 229                 count -= vc;
 230                 start = restart;
 231         }
 232
 233         pipe->flush(pipe, 0, NULL);
 234 }
 235
 236 static INLINE void
 237 nvfx_draw_elements_u08(struct nvfx_context *nvfx, void *ib,
 238                        unsigned mode, unsigned start, unsigned count)
 239 {
 240         struct nvfx_screen *screen = nvfx->screen;
 241         struct nouveau_channel *chan = screen->base.channel;
 242         struct nouveau_grobj *eng3d = screen->eng3d;
 243
 244         while (count) {
 245                 uint8_t *elts = (uint8_t *)ib + start;
 246                 unsigned vc, push, restart = 0;
 247
 248                 nvfx_state_emit(nvfx);
 249
 250                 vc = nouveau_vbuf_split(AVAIL_RING(chan), 6, 2,
 251                                         mode, start, count, &restart);
 252                 if (vc == 0) {
 253                         FIRE_RING(chan);
 254                         continue;
 255                 }
 256                 count -= vc;
 257
 258                 BEGIN_RING(chan, eng3d, NV34TCL_VERTEX_BEGIN_END, 1);
 259                 OUT_RING  (chan, nvgl_primitive(mode));
 260
 261                 if (vc & 1) {
 262                         BEGIN_RING(chan, eng3d, NV34TCL_VB_ELEMENT_U32, 1);
 263                         OUT_RING  (chan, elts[0]);
 264                         elts++; vc--;
 265                 }
 266
 267                 while (vc) {
 268                         unsigned i;
 269
 270                         push = MIN2(vc, 2047 * 2);
 271
 272                         BEGIN_RING_NI(chan, eng3d, NV34TCL_VB_ELEMENT_U16, push >> 1);
 273                         for (i = 0; i < push; i+=2)
 274                                 OUT_RING(chan, (elts[i+1] << 16) | elts[i]);
 275
 276                         vc -= push;
 277                         elts += push;
 278                 }
 279
 280                 BEGIN_RING(chan, eng3d, NV34TCL_VERTEX_BEGIN_END, 1);
 281                 OUT_RING  (chan, 0);
 282
 283                 start = restart;
 284         }
 285 }
 286
 287 static INLINE void
 288 nvfx_draw_elements_u16(struct nvfx_context *nvfx, void *ib,
 289                        unsigned mode, unsigned start, unsigned count)
 290 {
 291         struct nvfx_screen *screen = nvfx->screen;
 292         struct nouveau_channel *chan = screen->base.channel;
 293         struct nouveau_grobj *eng3d = screen->eng3d;
 294
 295         while (count) {
 296                 uint16_t *elts = (uint16_t *)ib + start;
 297                 unsigned vc, push, restart = 0;
 298
 299                 nvfx_state_emit(nvfx);
 300
 301                 vc = nouveau_vbuf_split(AVAIL_RING(chan), 6, 2,
 302                                         mode, start, count, &restart);
 303                 if (vc == 0) {
 304                         FIRE_RING(chan);
 305                         continue;
 306                 }
 307                 count -= vc;
 308
 309                 BEGIN_RING(chan, eng3d, NV34TCL_VERTEX_BEGIN_END, 1);
 310                 OUT_RING  (chan, nvgl_primitive(mode));
 311
 312                 if (vc & 1) {
 313                         BEGIN_RING(chan, eng3d, NV34TCL_VB_ELEMENT_U32, 1);
 314                         OUT_RING  (chan, elts[0]);
 315                         elts++; vc--;
 316                 }
 317
 318                 while (vc) {
 319                         unsigned i;
 320
 321                         push = MIN2(vc, 2047 * 2);
 322
 323                         BEGIN_RING_NI(chan, eng3d, NV34TCL_VB_ELEMENT_U16, push >> 1);
 324                         for (i = 0; i < push; i+=2)
 325                                 OUT_RING(chan, (elts[i+1] << 16) | elts[i]);
 326
 327                         vc -= push;
 328                         elts += push;
 329                 }
 330
 331                 BEGIN_RING(chan, eng3d, NV34TCL_VERTEX_BEGIN_END, 1);
 332                 OUT_RING  (chan, 0);
 333
 334                 start = restart;
 335         }
 336 }
 337
 338 static INLINE void
 339 nvfx_draw_elements_u32(struct nvfx_context *nvfx, void *ib,
 340                        unsigned mode, unsigned start, unsigned count)
 341 {
 342         struct nvfx_screen *screen = nvfx->screen;
 343         struct nouveau_channel *chan = screen->base.channel;
 344         struct nouveau_grobj *eng3d = screen->eng3d;
 345
 346         while (count) {
 347                 uint32_t *elts = (uint32_t *)ib + start;
 348                 unsigned vc, push, restart = 0;
 349
 350                 nvfx_state_emit(nvfx);
 351
 352                 vc = nouveau_vbuf_split(AVAIL_RING(chan), 5, 1,
 353                                         mode, start, count, &restart);
 354                 if (vc == 0) {
 355                         FIRE_RING(chan);
 356                         continue;
 357                 }
 358                 count -= vc;
 359
 360                 BEGIN_RING(chan, eng3d, NV34TCL_VERTEX_BEGIN_END, 1);
 361                 OUT_RING  (chan, nvgl_primitive(mode));
 362
 363                 while (vc) {
 364                         push = MIN2(vc, 2047);
 365
 366                         BEGIN_RING_NI(chan, eng3d, NV34TCL_VB_ELEMENT_U32, push);
 367                         OUT_RINGp    (chan, elts, push);
 368
 369                         vc -= push;
 370                         elts += push;
 371                 }
 372
 373                 BEGIN_RING(chan, eng3d, NV34TCL_VERTEX_BEGIN_END, 1);
 374                 OUT_RING  (chan, 0);
 375
 376                 start = restart;
 377         }
 378 }
 379
 380 static void
 381 nvfx_draw_elements_inline(struct pipe_context *pipe,
 382                           struct pipe_buffer *ib, unsigned ib_size,
 383                           unsigned mode, unsigned start, unsigned count)
 384 {
 385         struct nvfx_context *nvfx = nvfx_context(pipe);
 386         struct pipe_screen *pscreen = pipe->screen;
 387         void *map;
 388
 389         map = pipe_buffer_map(pscreen, ib, PIPE_BUFFER_USAGE_CPU_READ);
 390         if (!ib) {
 391                 NOUVEAU_ERR("failed mapping ib\n");
 392                 return;
 393         }
 394
 395         switch (ib_size) {
 396         case 1:
 397                 nvfx_draw_elements_u08(nvfx, map, mode, start, count);
 398                 break;
 399         case 2:
 400                 nvfx_draw_elements_u16(nvfx, map, mode, start, count);
 401                 break;
 402         case 4:
 403                 nvfx_draw_elements_u32(nvfx, map, mode, start, count);
 404                 break;
 405         default:
 406                 NOUVEAU_ERR("invalid idxbuf fmt %d\n", ib_size);
 407                 break;
 408         }
 409
 410         pipe_buffer_unmap(pscreen, ib);
 411 }
 412
 413 static void
 414 nvfx_draw_elements_vbo(struct pipe_context *pipe,
 415                        unsigned mode, unsigned start, unsigned count)
 416 {
 417         struct nvfx_context *nvfx = nvfx_context(pipe);
 418         struct nvfx_screen *screen = nvfx->screen;
 419         struct nouveau_channel *chan = screen->base.channel;
 420         struct nouveau_grobj *eng3d = screen->eng3d;
 421         unsigned restart = 0;
 422
 423         while (count) {
 424                 unsigned nr, vc;
 425
 426                 nvfx_state_emit(nvfx);
 427
 428                 vc = nouveau_vbuf_split(AVAIL_RING(chan), 6, 256,
 429                                         mode, start, count, &restart);
 430                 if (!vc) {
 431                         FIRE_RING(chan);
 432                         continue;
 433                 }
 434
 435                 BEGIN_RING(chan, eng3d, NV34TCL_VERTEX_BEGIN_END, 1);
 436                 OUT_RING  (chan, nvgl_primitive(mode));
 437
 438                 nr = (vc & 0xff);
 439                 if (nr) {
 440                         BEGIN_RING(chan, eng3d, NV34TCL_VB_INDEX_BATCH, 1);
 441                         OUT_RING  (chan, ((nr - 1) << 24) | start);
 442                         start += nr;
 443                 }
 444
 445                 nr = vc >> 8;
 446                 while (nr) {
 447                         unsigned push = nr > 2047 ? 2047 : nr;
 448
 449                         nr -= push;
 450
 451                         BEGIN_RING_NI(chan, eng3d, NV34TCL_VB_INDEX_BATCH, push);
 452                         while (push--) {
 453                                 OUT_RING(chan, ((0x100 - 1) << 24) | start);
 454                                 start += 0x100;
 455                         }
 456                 }
 457
 458                 BEGIN_RING(chan, eng3d, NV34TCL_VERTEX_BEGIN_END, 1);
 459                 OUT_RING  (chan, 0);
 460
 461                 count -= vc;
 462                 start = restart;
 463         }
 464 }
 465
 466 void
 467 nvfx_draw_elements(struct pipe_context *pipe,
 468                    struct pipe_buffer *indexBuffer, unsigned indexSize,
 469                    unsigned mode, unsigned start, unsigned count)
 470 {
 471         struct nvfx_context *nvfx = nvfx_context(pipe);
 472         boolean idxbuf;
 473
 474         idxbuf = nvfx_vbo_set_idxbuf(nvfx, indexBuffer, indexSize);
 475         if (nvfx_force_swtnl(nvfx) || !nvfx_state_validate(nvfx)) {
 476                 nvfx_draw_elements_swtnl(pipe, indexBuffer, indexSize,
 477                                            mode, start, count);
 478                 return;
 479         }
 480
 481         if (idxbuf) {
 482                 nvfx_draw_elements_vbo(pipe, mode, start, count);
 483         } else {
 484                 nvfx_draw_elements_inline(pipe, indexBuffer, indexSize,
 485                                           mode, start, count);
 486         }
 487
 488         pipe->flush(pipe, 0, NULL);
 489 }
 490
 491 static boolean
 492 nvfx_vbo_validate(struct nvfx_context *nvfx)
 493 {
 494         struct nouveau_stateobj *vtxbuf, *vtxfmt, *sattr = NULL;
 495         struct nouveau_grobj *eng3d = nvfx->screen->eng3d;
 496         struct pipe_buffer *ib = nvfx->idxbuf;
 497         unsigned ib_format = nvfx->idxbuf_format;
 498         unsigned vb_flags = nvfx->screen->vertex_buffer_flags | NOUVEAU_BO_RD;
 499         int hw;
 500
 501         vtxbuf = so_new(3, 17, 18);
 502         so_method(vtxbuf, eng3d, NV34TCL_VTXBUF_ADDRESS(0), nvfx->vtxelt->num_elements);
 503         vtxfmt = so_new(1, 16, 0);
 504         so_method(vtxfmt, eng3d, NV34TCL_VTXFMT(0), nvfx->vtxelt->num_elements);
 505
 506         for (hw = 0; hw < nvfx->vtxelt->num_elements; hw++) {
 507                 struct pipe_vertex_element *ve;
 508                 struct pipe_vertex_buffer *vb;
 509                 unsigned type, ncomp;
 510
 511                 ve = &nvfx->vtxelt->pipe[hw];
 512                 vb = &nvfx->vtxbuf[ve->vertex_buffer_index];
 513
 514                 if (!vb->stride) {
 515                         if (!sattr)
 516                                 sattr = so_new(16, 16 * 4, 0);
 517
 518                         if (nvfx_vbo_static_attrib(nvfx, sattr, hw, ve, vb)) {
 519                                 so_data(vtxbuf, 0);
 520                                 so_data(vtxfmt, NV34TCL_VTXFMT_TYPE_FLOAT);
 521                                 continue;
 522                         }
 523                 }
 524
 525                 if (nvfx_vbo_format_to_hw(ve->src_format, &type, &ncomp)) {
 526                         nvfx->fallback_swtnl |= NVFX_NEW_ARRAYS;
 527                         so_ref(NULL, &vtxbuf);
 528                         so_ref(NULL, &vtxfmt);
 529                         return FALSE;
 530                 }
 531
 532                 so_reloc(vtxbuf, nouveau_bo(vb->buffer),
 533                                  vb->buffer_offset + ve->src_offset,
 534                                  vb_flags | NOUVEAU_BO_LOW | NOUVEAU_BO_OR,
 535                                  0, NV34TCL_VTXBUF_ADDRESS_DMA1);
 536                 so_data (vtxfmt, ((vb->stride << NV34TCL_VTXFMT_STRIDE_SHIFT) |
 537                                   (ncomp << NV34TCL_VTXFMT_SIZE_SHIFT) | type));
 538         }
 539
 540         if (ib) {
 541                 struct nouveau_bo *bo = nouveau_bo(ib);
 542
 543                 so_method(vtxbuf, eng3d, NV34TCL_IDXBUF_ADDRESS, 2);
 544                 so_reloc (vtxbuf, bo, 0, vb_flags | NOUVEAU_BO_LOW, 0, 0);
 545                 so_reloc (vtxbuf, bo, ib_format, vb_flags | NOUVEAU_BO_OR,
 546                                   0, NV34TCL_IDXBUF_FORMAT_DMA1);
 547         }
 548
 549         so_method(vtxbuf, eng3d, 0x1710, 1);
 550         so_data  (vtxbuf, 0);
 551
 552         so_ref(vtxbuf, &nvfx->state.hw[NVFX_STATE_VTXBUF]);
 553         so_ref(NULL, &vtxbuf);
 554         nvfx->state.dirty |= (1ULL << NVFX_STATE_VTXBUF);
 555         so_ref(vtxfmt, &nvfx->state.hw[NVFX_STATE_VTXFMT]);
 556         so_ref(NULL, &vtxfmt);
 557         nvfx->state.dirty |= (1ULL << NVFX_STATE_VTXFMT);
 558         so_ref(sattr, &nvfx->state.hw[NVFX_STATE_VTXATTR]);
 559         so_ref(NULL, &sattr);
 560         nvfx->state.dirty |= (1ULL << NVFX_STATE_VTXATTR);
 561         return FALSE;
 562 }
 563
 564 struct nvfx_state_entry nvfx_state_vbo = {
 565         .validate = nvfx_vbo_validate,
 566         .dirty = {
 567                 .pipe = NVFX_NEW_ARRAYS,
 568                 .hw = 0,
 569         }
 570 };