src/gallium/drivers/svga/svga_draw.c

   1 /**********************************************************
   2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 #include "pipe/p_compiler.h"
  27 #include "util/u_inlines.h"
  28 #include "pipe/p_defines.h"
  29 #include "util/u_helpers.h"
  30 #include "util/u_memory.h"
  31 #include "util/u_math.h"
  32
  33 #include "svga_context.h"
  34 #include "svga_draw.h"
  35 #include "svga_draw_private.h"
  36 #include "svga_debug.h"
  37 #include "svga_screen.h"
  38 #include "svga_resource.h"
  39 #include "svga_resource_buffer.h"
  40 #include "svga_resource_texture.h"
  41 #include "svga_shader.h"
  42 #include "svga_surface.h"
  43 #include "svga_winsys.h"
  44 #include "svga_cmd.h"
  45
  46
  47 struct svga_hwtnl *
  48 svga_hwtnl_create(struct svga_context *svga)
  49 {
  50    struct svga_hwtnl *hwtnl = CALLOC_STRUCT(svga_hwtnl);
  51    if (!hwtnl)
  52       goto fail;
  53
  54    hwtnl->svga = svga;
  55
  56    hwtnl->cmd.swc = svga->swc;
  57
  58    return hwtnl;
  59
  60 fail:
  61    return NULL;
  62 }
  63
  64
  65 void
  66 svga_hwtnl_destroy(struct svga_hwtnl *hwtnl)
  67 {
  68    unsigned i, j;
  69
  70    for (i = 0; i < PIPE_PRIM_MAX; i++) {
  71       for (j = 0; j < IDX_CACHE_MAX; j++) {
  72          pipe_resource_reference(&hwtnl->index_cache[i][j].buffer, NULL);
  73       }
  74    }
  75
  76    for (i = 0; i < hwtnl->cmd.vbuf_count; i++)
  77       pipe_resource_reference(&hwtnl->cmd.vbufs[i].buffer, NULL);
  78
  79    for (i = 0; i < hwtnl->cmd.prim_count; i++)
  80       pipe_resource_reference(&hwtnl->cmd.prim_ib[i], NULL);
  81
  82    FREE(hwtnl);
  83 }
  84
  85
  86 void
  87 svga_hwtnl_set_flatshade(struct svga_hwtnl *hwtnl,
  88                          boolean flatshade, boolean flatshade_first)
  89 {
  90    struct svga_screen *svgascreen = svga_screen(hwtnl->svga->pipe.screen);
  91
  92    /* User-specified PV */
  93    hwtnl->api_pv = (flatshade && !flatshade_first) ? PV_LAST : PV_FIRST;
  94
  95    /* Device supported PV */
  96    if (svgascreen->haveProvokingVertex) {
  97       /* use the mode specified by the user */
  98       hwtnl->hw_pv = hwtnl->api_pv;
  99    }
 100    else {
 101       /* the device only support first provoking vertex */
 102       hwtnl->hw_pv = PV_FIRST;
 103    }
 104 }
 105
 106
 107 void
 108 svga_hwtnl_set_fillmode(struct svga_hwtnl *hwtnl, unsigned mode)
 109 {
 110    hwtnl->api_fillmode = mode;
 111 }
 112
 113
 114 void
 115 svga_hwtnl_vertex_decls(struct svga_hwtnl *hwtnl,
 116                         unsigned count,
 117                         const SVGA3dVertexDecl * decls,
 118                         const unsigned *buffer_indexes,
 119                         SVGA3dElementLayoutId layout_id)
 120 {
 121    assert(hwtnl->cmd.prim_count == 0);
 122    hwtnl->cmd.vdecl_count = count;
 123    hwtnl->cmd.vdecl_layout_id = layout_id;
 124    memcpy(hwtnl->cmd.vdecl, decls, count * sizeof(*decls));
 125    memcpy(hwtnl->cmd.vdecl_buffer_index, buffer_indexes,
 126           count * sizeof(unsigned));
 127 }
 128
 129
 130 /**
 131  * Specify vertex buffers for hardware drawing.
 132  */
 133 void
 134 svga_hwtnl_vertex_buffers(struct svga_hwtnl *hwtnl,
 135                           unsigned count, struct pipe_vertex_buffer *buffers)
 136 {
 137    util_set_vertex_buffers_count(hwtnl->cmd.vbufs,
 138                                  &hwtnl->cmd.vbuf_count, buffers, 0, count);
 139 }
 140
 141
 142 /**
 143  * Determine whether the specified buffer is referred in the primitive queue,
 144  * for which no commands have been written yet.
 145  */
 146 boolean
 147 svga_hwtnl_is_buffer_referred(struct svga_hwtnl *hwtnl,
 148                               struct pipe_resource *buffer)
 149 {
 150    unsigned i;
 151
 152    if (svga_buffer_is_user_buffer(buffer)) {
 153       return FALSE;
 154    }
 155
 156    if (!hwtnl->cmd.prim_count) {
 157       return FALSE;
 158    }
 159
 160    for (i = 0; i < hwtnl->cmd.vbuf_count; ++i) {
 161       if (hwtnl->cmd.vbufs[i].buffer == buffer) {
 162          return TRUE;
 163       }
 164    }
 165
 166    for (i = 0; i < hwtnl->cmd.prim_count; ++i) {
 167       if (hwtnl->cmd.prim_ib[i] == buffer) {
 168          return TRUE;
 169       }
 170    }
 171
 172    return FALSE;
 173 }
 174
 175
 176 static enum pipe_error
 177 draw_vgpu9(struct svga_hwtnl *hwtnl)
 178 {
 179    struct svga_winsys_context *swc = hwtnl->cmd.swc;
 180    struct svga_context *svga = hwtnl->svga;
 181    enum pipe_error ret;
 182    struct svga_winsys_surface *vb_handle[SVGA3D_INPUTREG_MAX];
 183    struct svga_winsys_surface *ib_handle[QSZ];
 184    struct svga_winsys_surface *handle;
 185    SVGA3dVertexDecl *vdecl;
 186    SVGA3dPrimitiveRange *prim;
 187    unsigned i;
 188
 189    for (i = 0; i < hwtnl->cmd.vdecl_count; i++) {
 190       unsigned j = hwtnl->cmd.vdecl_buffer_index[i];
 191       handle = svga_buffer_handle(svga, hwtnl->cmd.vbufs[j].buffer);
 192       if (!handle)
 193          return PIPE_ERROR_OUT_OF_MEMORY;
 194
 195       vb_handle[i] = handle;
 196    }
 197
 198    for (i = 0; i < hwtnl->cmd.prim_count; i++) {
 199       if (hwtnl->cmd.prim_ib[i]) {
 200          handle = svga_buffer_handle(svga, hwtnl->cmd.prim_ib[i]);
 201          if (!handle)
 202             return PIPE_ERROR_OUT_OF_MEMORY;
 203       }
 204       else
 205          handle = NULL;
 206
 207       ib_handle[i] = handle;
 208    }
 209
 210    if (svga->rebind.flags.rendertargets) {
 211       ret = svga_reemit_framebuffer_bindings(svga);
 212       if (ret != PIPE_OK) {
 213          return ret;
 214       }
 215    }
 216
 217    if (svga->rebind.flags.texture_samplers) {
 218       ret = svga_reemit_tss_bindings(svga);
 219       if (ret != PIPE_OK) {
 220          return ret;
 221       }
 222    }
 223
 224    if (svga->rebind.flags.vs) {
 225       ret = svga_reemit_vs_bindings(svga);
 226       if (ret != PIPE_OK) {
 227          return ret;
 228       }
 229    }
 230
 231    if (svga->rebind.flags.fs) {
 232       ret = svga_reemit_fs_bindings(svga);
 233       if (ret != PIPE_OK) {
 234          return ret;
 235       }
 236    }
 237
 238    SVGA_DBG(DEBUG_DMA, "draw to sid %p, %d prims\n",
 239             svga->curr.framebuffer.cbufs[0] ?
 240             svga_surface(svga->curr.framebuffer.cbufs[0])->handle : NULL,
 241             hwtnl->cmd.prim_count);
 242
 243    ret = SVGA3D_BeginDrawPrimitives(swc,
 244                                     &vdecl,
 245                                     hwtnl->cmd.vdecl_count,
 246                                     &prim, hwtnl->cmd.prim_count);
 247    if (ret != PIPE_OK)
 248       return ret;
 249
 250    memcpy(vdecl,
 251           hwtnl->cmd.vdecl,
 252           hwtnl->cmd.vdecl_count * sizeof hwtnl->cmd.vdecl[0]);
 253
 254    for (i = 0; i < hwtnl->cmd.vdecl_count; i++) {
 255       /* check for 4-byte alignment */
 256       assert(vdecl[i].array.offset % 4 == 0);
 257       assert(vdecl[i].array.stride % 4 == 0);
 258
 259       /* Given rangeHint is considered to be relative to indexBias, and
 260        * indexBias varies per primitive, we cannot accurately supply an
 261        * rangeHint when emitting more than one primitive per draw command.
 262        */
 263       if (hwtnl->cmd.prim_count == 1) {
 264          vdecl[i].rangeHint.first = hwtnl->cmd.min_index[0];
 265          vdecl[i].rangeHint.last = hwtnl->cmd.max_index[0] + 1;
 266       }
 267       else {
 268          vdecl[i].rangeHint.first = 0;
 269          vdecl[i].rangeHint.last = 0;
 270       }
 271
 272       swc->surface_relocation(swc,
 273                               &vdecl[i].array.surfaceId,
 274                               NULL, vb_handle[i], SVGA_RELOC_READ);
 275    }
 276
 277    memcpy(prim,
 278           hwtnl->cmd.prim, hwtnl->cmd.prim_count * sizeof hwtnl->cmd.prim[0]);
 279
 280    for (i = 0; i < hwtnl->cmd.prim_count; i++) {
 281       swc->surface_relocation(swc,
 282                               &prim[i].indexArray.surfaceId,
 283                               NULL, ib_handle[i], SVGA_RELOC_READ);
 284       pipe_resource_reference(&hwtnl->cmd.prim_ib[i], NULL);
 285    }
 286
 287    SVGA_FIFOCommitAll(swc);
 288
 289    hwtnl->cmd.prim_count = 0;
 290
 291    return PIPE_OK;
 292 }
 293
 294
 295 static SVGA3dSurfaceFormat
 296 xlate_index_format(unsigned indexWidth)
 297 {
 298    if (indexWidth == 2) {
 299       return SVGA3D_R16_UINT;
 300    }
 301    else if (indexWidth == 4) {
 302       return SVGA3D_R32_UINT;
 303    }
 304    else {
 305       assert(!"Bad indexWidth");
 306       return SVGA3D_R32_UINT;
 307    }
 308 }
 309
 310
 311 static enum pipe_error
 312 validate_sampler_resources(struct svga_context *svga)
 313 {
 314    unsigned shader;
 315
 316    assert(svga_have_vgpu10(svga));
 317
 318    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 319       unsigned count = svga->curr.num_sampler_views[shader];
 320       unsigned i;
 321       struct svga_winsys_surface *surfaces[PIPE_MAX_SAMPLERS];
 322       enum pipe_error ret;
 323
 324       /*
 325        * Reference bound sampler resources to ensure pending updates are
 326        * noticed by the device.
 327        */
 328       for (i = 0; i < count; i++) {
 329          struct svga_pipe_sampler_view *sv =
 330             svga_pipe_sampler_view(svga->curr.sampler_views[shader][i]);
 331
 332          if (sv) {
 333             if (sv->base.texture->target == PIPE_BUFFER) {
 334                surfaces[i] = svga_buffer_handle(svga, sv->base.texture);
 335             }
 336             else {
 337                surfaces[i] = svga_texture(sv->base.texture)->handle;
 338             }
 339          }
 340          else {
 341             surfaces[i] = NULL;
 342          }
 343       }
 344
 345       if (shader == PIPE_SHADER_FRAGMENT &&
 346           svga->curr.rast->templ.poly_stipple_enable) {
 347          const unsigned unit = svga->state.hw_draw.fs->pstipple_sampler_unit;
 348          struct svga_pipe_sampler_view *sv =
 349             svga->polygon_stipple.sampler_view;
 350
 351          assert(sv);
 352          surfaces[unit] = svga_texture(sv->base.texture)->handle;
 353          count = MAX2(count, unit+1);
 354       }
 355
 356       /* rebind the shader resources if needed */
 357       if (svga->rebind.flags.texture_samplers) {
 358          for (i = 0; i < count; i++) {
 359             if (surfaces[i]) {
 360                ret = svga->swc->resource_rebind(svga->swc,
 361                                                 surfaces[i],
 362                                                 NULL,
 363                                                 SVGA_RELOC_READ);
 364                if (ret != PIPE_OK)
 365                   return ret;
 366             }
 367          }
 368       }
 369    }
 370    svga->rebind.flags.texture_samplers = FALSE;
 371
 372    return PIPE_OK;
 373 }
 374
 375
 376 static enum pipe_error
 377 validate_constant_buffers(struct svga_context *svga)
 378 {
 379    unsigned shader;
 380
 381    assert(svga_have_vgpu10(svga));
 382
 383    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 384       enum pipe_error ret;
 385       struct svga_buffer *buffer;
 386       struct svga_winsys_surface *handle;
 387       unsigned enabled_constbufs;
 388
 389       /* Rebind the default constant buffer if needed */
 390       if (svga->rebind.flags.constbufs) {
 391          buffer = svga_buffer(svga->state.hw_draw.constbuf[shader]);
 392          if (buffer) {
 393             ret = svga->swc->resource_rebind(svga->swc,
 394                                              buffer->handle,
 395                                              NULL,
 396                                              SVGA_RELOC_READ);
 397             if (ret != PIPE_OK)
 398                return ret;
 399          }
 400       }
 401
 402       /*
 403        * Reference other bound constant buffers to ensure pending updates are
 404        * noticed by the device.
 405        */
 406       enabled_constbufs = svga->state.hw_draw.enabled_constbufs[shader] & ~1u;
 407       while (enabled_constbufs) {
 408          unsigned i = u_bit_scan(&enabled_constbufs);
 409          buffer = svga_buffer(svga->curr.constbufs[shader][i].buffer);
 410          if (buffer) {
 411             handle = svga_buffer_handle(svga, &buffer->b.b);
 412
 413             if (svga->rebind.flags.constbufs) {
 414                ret = svga->swc->resource_rebind(svga->swc,
 415                                                 handle,
 416                                                 NULL,
 417                                                 SVGA_RELOC_READ);
 418                if (ret != PIPE_OK)
 419                   return ret;
 420             }
 421          }
 422       }
 423    }
 424    svga->rebind.flags.constbufs = FALSE;
 425
 426    return PIPE_OK;
 427 }
 428
 429
 430 static enum pipe_error
 431 draw_vgpu10(struct svga_hwtnl *hwtnl,
 432             const SVGA3dPrimitiveRange *range,
 433             unsigned vcount,
 434             unsigned min_index,
 435             unsigned max_index, struct pipe_resource *ib,
 436             unsigned start_instance, unsigned instance_count)
 437 {
 438    struct svga_context *svga = hwtnl->svga;
 439    struct svga_winsys_surface *vb_handle[SVGA3D_INPUTREG_MAX];
 440    struct svga_winsys_surface *ib_handle;
 441    const unsigned vbuf_count = hwtnl->cmd.vbuf_count;
 442    enum pipe_error ret;
 443    unsigned i;
 444
 445    assert(svga_have_vgpu10(svga));
 446    assert(hwtnl->cmd.prim_count == 0);
 447
 448    /* We need to reemit all the current resource bindings along with the Draw
 449     * command to be sure that the referenced resources are available for the
 450     * Draw command, just in case the surfaces associated with the resources
 451     * are paged out.
 452     */
 453    if (svga->rebind.val) {
 454       ret = svga_rebind_framebuffer_bindings(svga);
 455       if (ret != PIPE_OK)
 456          return ret;
 457
 458       ret = svga_rebind_shaders(svga);
 459       if (ret != PIPE_OK)
 460          return ret;
 461    }
 462
 463    ret = validate_sampler_resources(svga);
 464    if (ret != PIPE_OK)
 465       return ret;
 466
 467    ret = validate_constant_buffers(svga);
 468    if (ret != PIPE_OK)
 469       return ret;
 470
 471    /* Get handle for each referenced vertex buffer */
 472    for (i = 0; i < vbuf_count; i++) {
 473       struct svga_buffer *sbuf = svga_buffer(hwtnl->cmd.vbufs[i].buffer);
 474
 475       if (sbuf) {
 476          assert(sbuf->key.flags & SVGA3D_SURFACE_BIND_VERTEX_BUFFER);
 477          vb_handle[i] = svga_buffer_handle(svga, &sbuf->b.b);
 478          if (vb_handle[i] == NULL)
 479             return PIPE_ERROR_OUT_OF_MEMORY;
 480       }
 481       else {
 482          vb_handle[i] = NULL;
 483       }
 484    }
 485
 486    /* Get handles for the index buffers */
 487    if (ib) {
 488       struct svga_buffer *sbuf = svga_buffer(ib);
 489
 490       assert(sbuf->key.flags & SVGA3D_SURFACE_BIND_INDEX_BUFFER);
 491       (void) sbuf; /* silence unused var warning */
 492
 493       ib_handle = svga_buffer_handle(svga, ib);
 494       if (!ib_handle)
 495          return PIPE_ERROR_OUT_OF_MEMORY;
 496    }
 497    else {
 498       ib_handle = NULL;
 499    }
 500
 501    /* setup vertex attribute input layout */
 502    if (svga->state.hw_draw.layout_id != hwtnl->cmd.vdecl_layout_id) {
 503       ret = SVGA3D_vgpu10_SetInputLayout(svga->swc,
 504                                          hwtnl->cmd.vdecl_layout_id);
 505       if (ret != PIPE_OK)
 506          return ret;
 507
 508       svga->state.hw_draw.layout_id = hwtnl->cmd.vdecl_layout_id;
 509    }
 510
 511    /* setup vertex buffers */
 512    {
 513       SVGA3dVertexBuffer buffers[PIPE_MAX_ATTRIBS];
 514
 515       for (i = 0; i < vbuf_count; i++) {
 516          buffers[i].stride = hwtnl->cmd.vbufs[i].stride;
 517          buffers[i].offset = hwtnl->cmd.vbufs[i].buffer_offset;
 518       }
 519       if (vbuf_count > 0) {
 520          /* If we haven't yet emitted a drawing command or if any
 521           * vertex buffer state is changing, issue that state now.
 522           */
 523          if (((hwtnl->cmd.swc->hints & SVGA_HINT_FLAG_CAN_PRE_FLUSH) == 0) ||
 524              vbuf_count != svga->state.hw_draw.num_vbuffers ||
 525              memcmp(buffers, svga->state.hw_draw.vbuffers,
 526                     vbuf_count * sizeof(buffers[0])) ||
 527              memcmp(vb_handle, svga->state.hw_draw.vbuffer_handles,
 528                     vbuf_count * sizeof(vb_handle[0]))) {
 529             ret = SVGA3D_vgpu10_SetVertexBuffers(svga->swc, vbuf_count,
 530                                                  0,    /* startBuffer */
 531                                                  buffers, vb_handle);
 532             if (ret != PIPE_OK)
 533                return ret;
 534
 535             svga->state.hw_draw.num_vbuffers = vbuf_count;
 536             memcpy(svga->state.hw_draw.vbuffers, buffers,
 537                    vbuf_count * sizeof(buffers[0]));
 538             memcpy(svga->state.hw_draw.vbuffer_handles, vb_handle,
 539                    vbuf_count * sizeof(vb_handle[0]));
 540          }
 541       }
 542    }
 543
 544    /* Set primitive type (line, tri, etc) */
 545    if (svga->state.hw_draw.topology != range->primType) {
 546       ret = SVGA3D_vgpu10_SetTopology(svga->swc, range->primType);
 547       if (ret != PIPE_OK)
 548          return ret;
 549
 550       svga->state.hw_draw.topology = range->primType;
 551    }
 552
 553    if (ib_handle) {
 554       /* indexed drawing */
 555       SVGA3dSurfaceFormat indexFormat = xlate_index_format(range->indexWidth);
 556
 557       /* setup index buffer */
 558       if (ib_handle != svga->state.hw_draw.ib ||
 559           indexFormat != svga->state.hw_draw.ib_format ||
 560           range->indexArray.offset != svga->state.hw_draw.ib_offset) {
 561          ret = SVGA3D_vgpu10_SetIndexBuffer(svga->swc, ib_handle,
 562                                             indexFormat,
 563                                             range->indexArray.offset);
 564          if (ret != PIPE_OK)
 565             return ret;
 566          svga->state.hw_draw.ib = ib_handle;
 567          svga->state.hw_draw.ib_format = indexFormat;
 568          svga->state.hw_draw.ib_offset = range->indexArray.offset;
 569       }
 570
 571       if (instance_count > 1) {
 572          ret = SVGA3D_vgpu10_DrawIndexedInstanced(svga->swc,
 573                                                   vcount,
 574                                                   instance_count,
 575                                                   0, /* startIndexLocation */
 576                                                   range->indexBias,
 577                                                   start_instance);
 578          if (ret != PIPE_OK)
 579             return ret;
 580       }
 581       else {
 582          /* non-instanced drawing */
 583          ret = SVGA3D_vgpu10_DrawIndexed(svga->swc,
 584                                          vcount,
 585                                          0,      /* startIndexLocation */
 586                                          range->indexBias);
 587          if (ret != PIPE_OK)
 588             return ret;
 589       }
 590    }
 591    else {
 592       /* non-indexed drawing */
 593       if (instance_count > 1) {
 594          ret = SVGA3D_vgpu10_DrawInstanced(svga->swc,
 595                                            vcount,
 596                                            instance_count,
 597                                            range->indexBias,
 598                                            start_instance);
 599          if (ret != PIPE_OK)
 600             return ret;
 601       }
 602       else {
 603          /* non-instanced */
 604          ret = SVGA3D_vgpu10_Draw(svga->swc,
 605                                   vcount,
 606                                   range->indexBias);
 607          if (ret != PIPE_OK)
 608             return ret;
 609       }
 610    }
 611
 612    hwtnl->cmd.prim_count = 0;
 613
 614    return PIPE_OK;
 615 }
 616
 617
 618
 619 /**
 620  * Emit any pending drawing commands to the command buffer.
 621  * When we receive VGPU9 drawing commands we accumulate them and don't
 622  * immediately emit them into the command buffer.
 623  * This function needs to be called before we change state that could
 624  * effect those pending draws.
 625  */
 626 enum pipe_error
 627 svga_hwtnl_flush(struct svga_hwtnl *hwtnl)
 628 {
 629    if (!svga_have_vgpu10(hwtnl->svga) && hwtnl->cmd.prim_count) {
 630       /* we only queue up primitive for VGPU9 */
 631       return draw_vgpu9(hwtnl);
 632    }
 633    return PIPE_OK;
 634 }
 635
 636
 637 void
 638 svga_hwtnl_set_index_bias(struct svga_hwtnl *hwtnl, int index_bias)
 639 {
 640    hwtnl->index_bias = index_bias;
 641 }
 642
 643
 644
 645 /***********************************************************************
 646  * Internal functions:
 647  */
 648
 649 /**
 650  * For debugging only.
 651  */
 652 static void
 653 check_draw_params(struct svga_hwtnl *hwtnl,
 654                   const SVGA3dPrimitiveRange *range,
 655                   unsigned min_index, unsigned max_index,
 656                   struct pipe_resource *ib)
 657 {
 658    unsigned i;
 659
 660    assert(!svga_have_vgpu10(hwtnl->svga));
 661
 662    for (i = 0; i < hwtnl->cmd.vdecl_count; i++) {
 663       unsigned j = hwtnl->cmd.vdecl_buffer_index[i];
 664       const struct pipe_vertex_buffer *vb = &hwtnl->cmd.vbufs[j];
 665       unsigned size = vb->buffer ? vb->buffer->width0 : 0;
 666       unsigned offset = hwtnl->cmd.vdecl[i].array.offset;
 667       unsigned stride = hwtnl->cmd.vdecl[i].array.stride;
 668       int index_bias = (int) range->indexBias + hwtnl->index_bias;
 669       unsigned width;
 670
 671       if (size == 0)
 672          continue;
 673
 674       assert(vb);
 675       assert(size);
 676       assert(offset < size);
 677       assert(min_index <= max_index);
 678       (void) width;
 679       (void) stride;
 680       (void) offset;
 681       (void) size;
 682
 683       switch (hwtnl->cmd.vdecl[i].identity.type) {
 684       case SVGA3D_DECLTYPE_FLOAT1:
 685          width = 4;
 686          break;
 687       case SVGA3D_DECLTYPE_FLOAT2:
 688          width = 4 * 2;
 689          break;
 690       case SVGA3D_DECLTYPE_FLOAT3:
 691          width = 4 * 3;
 692          break;
 693       case SVGA3D_DECLTYPE_FLOAT4:
 694          width = 4 * 4;
 695          break;
 696       case SVGA3D_DECLTYPE_D3DCOLOR:
 697          width = 4;
 698          break;
 699       case SVGA3D_DECLTYPE_UBYTE4:
 700          width = 1 * 4;
 701          break;
 702       case SVGA3D_DECLTYPE_SHORT2:
 703          width = 2 * 2;
 704          break;
 705       case SVGA3D_DECLTYPE_SHORT4:
 706          width = 2 * 4;
 707          break;
 708       case SVGA3D_DECLTYPE_UBYTE4N:
 709          width = 1 * 4;
 710          break;
 711       case SVGA3D_DECLTYPE_SHORT2N:
 712          width = 2 * 2;
 713          break;
 714       case SVGA3D_DECLTYPE_SHORT4N:
 715          width = 2 * 4;
 716          break;
 717       case SVGA3D_DECLTYPE_USHORT2N:
 718          width = 2 * 2;
 719          break;
 720       case SVGA3D_DECLTYPE_USHORT4N:
 721          width = 2 * 4;
 722          break;
 723       case SVGA3D_DECLTYPE_UDEC3:
 724          width = 4;
 725          break;
 726       case SVGA3D_DECLTYPE_DEC3N:
 727          width = 4;
 728          break;
 729       case SVGA3D_DECLTYPE_FLOAT16_2:
 730          width = 2 * 2;
 731          break;
 732       case SVGA3D_DECLTYPE_FLOAT16_4:
 733          width = 2 * 4;
 734          break;
 735       default:
 736          assert(0);
 737          width = 0;
 738          break;
 739       }
 740
 741       if (index_bias >= 0) {
 742          assert(offset + index_bias * stride + width <= size);
 743       }
 744
 745       /*
 746        * min_index/max_index are merely conservative guesses, so we can't
 747        * make buffer overflow detection based on their values.
 748        */
 749    }
 750
 751    assert(range->indexWidth == range->indexArray.stride);
 752
 753    if (ib) {
 754       unsigned size = ib->width0;
 755       unsigned offset = range->indexArray.offset;
 756       unsigned stride = range->indexArray.stride;
 757       unsigned count;
 758
 759       assert(size);
 760       assert(offset < size);
 761       assert(stride);
 762       (void) size;
 763       (void) offset;
 764       (void) stride;
 765
 766       switch (range->primType) {
 767       case SVGA3D_PRIMITIVE_POINTLIST:
 768          count = range->primitiveCount;
 769          break;
 770       case SVGA3D_PRIMITIVE_LINELIST:
 771          count = range->primitiveCount * 2;
 772          break;
 773       case SVGA3D_PRIMITIVE_LINESTRIP:
 774          count = range->primitiveCount + 1;
 775          break;
 776       case SVGA3D_PRIMITIVE_TRIANGLELIST:
 777          count = range->primitiveCount * 3;
 778          break;
 779       case SVGA3D_PRIMITIVE_TRIANGLESTRIP:
 780          count = range->primitiveCount + 2;
 781          break;
 782       case SVGA3D_PRIMITIVE_TRIANGLEFAN:
 783          count = range->primitiveCount + 2;
 784          break;
 785       default:
 786          assert(0);
 787          count = 0;
 788          break;
 789       }
 790
 791       assert(offset + count * stride <= size);
 792    }
 793 }
 794
 795
 796 /**
 797  * All drawing filters down into this function, either directly
 798  * on the hardware path or after doing software vertex processing.
 799  */
 800 enum pipe_error
 801 svga_hwtnl_prim(struct svga_hwtnl *hwtnl,
 802                 const SVGA3dPrimitiveRange * range,
 803                 unsigned vcount,
 804                 unsigned min_index,
 805                 unsigned max_index, struct pipe_resource *ib,
 806                 unsigned start_instance, unsigned instance_count)
 807 {
 808    enum pipe_error ret = PIPE_OK;
 809
 810    if (svga_have_vgpu10(hwtnl->svga)) {
 811       /* draw immediately */
 812       ret = draw_vgpu10(hwtnl, range, vcount, min_index, max_index, ib,
 813                         start_instance, instance_count);
 814       if (ret != PIPE_OK) {
 815          svga_context_flush(hwtnl->svga, NULL);
 816          ret = draw_vgpu10(hwtnl, range, vcount, min_index, max_index, ib,
 817                            start_instance, instance_count);
 818          assert(ret == PIPE_OK);
 819       }
 820    }
 821    else {
 822       /* batch up drawing commands */
 823 #ifdef DEBUG
 824       check_draw_params(hwtnl, range, min_index, max_index, ib);
 825       assert(start_instance == 0);
 826       assert(instance_count <= 1);
 827 #else
 828       (void) check_draw_params;
 829 #endif
 830
 831       if (hwtnl->cmd.prim_count + 1 >= QSZ) {
 832          ret = svga_hwtnl_flush(hwtnl);
 833          if (ret != PIPE_OK)
 834             return ret;
 835       }
 836
 837       /* min/max indices are relative to bias */
 838       hwtnl->cmd.min_index[hwtnl->cmd.prim_count] = min_index;
 839       hwtnl->cmd.max_index[hwtnl->cmd.prim_count] = max_index;
 840
 841       hwtnl->cmd.prim[hwtnl->cmd.prim_count] = *range;
 842       hwtnl->cmd.prim[hwtnl->cmd.prim_count].indexBias += hwtnl->index_bias;
 843
 844       pipe_resource_reference(&hwtnl->cmd.prim_ib[hwtnl->cmd.prim_count], ib);
 845       hwtnl->cmd.prim_count++;
 846    }
 847
 848    return ret;
 849 }