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      1 /*
      2  * Copyright 2012 Red Hat Inc.
      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 shall be included in
     12  * all copies or substantial portions of the Software.
     13  *
     14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
     18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     20  * OTHER DEALINGS IN THE SOFTWARE.
     21  *
     22  * Authors: Ben Skeggs
     23  *
     24  */
     25 
     26 #include "util/u_format.h"
     27 #include "util/u_inlines.h"
     28 #include "util/u_prim.h"
     29 #include "translate/translate.h"
     30 
     31 #include "nouveau_fence.h"
     32 #include "nv_object.xml.h"
     33 #include "nv30/nv30-40_3d.xml.h"
     34 #include "nv30/nv30_context.h"
     35 #include "nv30/nv30_format.h"
     36 
     37 static void
     38 nv30_emit_vtxattr(struct nv30_context *nv30, struct pipe_vertex_buffer *vb,
     39                   struct pipe_vertex_element *ve, unsigned attr)
     40 {
     41    const unsigned nc = util_format_get_nr_components(ve->src_format);
     42    struct nouveau_pushbuf *push = nv30->base.pushbuf;
     43    struct nv04_resource *res = nv04_resource(vb->buffer.resource);
     44    const struct util_format_description *desc =
     45       util_format_description(ve->src_format);
     46    const void *data;
     47    float v[4];
     48 
     49    data = nouveau_resource_map_offset(&nv30->base, res, vb->buffer_offset +
     50                                       ve->src_offset, NOUVEAU_BO_RD);
     51 
     52    desc->unpack_rgba_float(v, 0, data, 0, 1, 1);
     53 
     54    switch (nc) {
     55    case 4:
     56       BEGIN_NV04(push, NV30_3D(VTX_ATTR_4F(attr)), 4);
     57       PUSH_DATAf(push, v[0]);
     58       PUSH_DATAf(push, v[1]);
     59       PUSH_DATAf(push, v[2]);
     60       PUSH_DATAf(push, v[3]);
     61       break;
     62    case 3:
     63       BEGIN_NV04(push, NV30_3D(VTX_ATTR_3F(attr)), 3);
     64       PUSH_DATAf(push, v[0]);
     65       PUSH_DATAf(push, v[1]);
     66       PUSH_DATAf(push, v[2]);
     67       break;
     68    case 2:
     69       BEGIN_NV04(push, NV30_3D(VTX_ATTR_2F(attr)), 2);
     70       PUSH_DATAf(push, v[0]);
     71       PUSH_DATAf(push, v[1]);
     72       break;
     73    case 1:
     74       BEGIN_NV04(push, NV30_3D(VTX_ATTR_1F(attr)), 1);
     75       PUSH_DATAf(push, v[0]);
     76       break;
     77    default:
     78       assert(0);
     79       break;
     80    }
     81 }
     82 
     83 static inline void
     84 nv30_vbuf_range(struct nv30_context *nv30, int vbi,
     85                 uint32_t *base, uint32_t *size)
     86 {
     87    assert(nv30->vbo_max_index != ~0);
     88    *base = nv30->vbo_min_index * nv30->vtxbuf[vbi].stride;
     89    *size = (nv30->vbo_max_index -
     90             nv30->vbo_min_index + 1) * nv30->vtxbuf[vbi].stride;
     91 }
     92 
     93 static void
     94 nv30_prevalidate_vbufs(struct nv30_context *nv30)
     95 {
     96    struct pipe_vertex_buffer *vb;
     97    struct nv04_resource *buf;
     98    int i;
     99    uint32_t base, size;
    100 
    101    nv30->vbo_fifo = nv30->vbo_user = 0;
    102 
    103    for (i = 0; i < nv30->num_vtxbufs; i++) {
    104       vb = &nv30->vtxbuf[i];
    105       if (!vb->stride || !vb->buffer.resource) /* NOTE: user_buffer not implemented */
    106          continue;
    107       buf = nv04_resource(vb->buffer.resource);
    108 
    109       /* NOTE: user buffers with temporary storage count as mapped by GPU */
    110       if (!nouveau_resource_mapped_by_gpu(vb->buffer.resource)) {
    111          if (nv30->vbo_push_hint) {
    112             nv30->vbo_fifo = ~0;
    113             continue;
    114          } else {
    115             if (buf->status & NOUVEAU_BUFFER_STATUS_USER_MEMORY) {
    116                nv30->vbo_user |= 1 << i;
    117                assert(vb->stride > vb->buffer_offset);
    118                nv30_vbuf_range(nv30, i, &base, &size);
    119                nouveau_user_buffer_upload(&nv30->base, buf, base, size);
    120             } else {
    121                nouveau_buffer_migrate(&nv30->base, buf, NOUVEAU_BO_GART);
    122             }
    123             nv30->base.vbo_dirty = true;
    124          }
    125       }
    126    }
    127 }
    128 
    129 static void
    130 nv30_update_user_vbufs(struct nv30_context *nv30)
    131 {
    132    struct nouveau_pushbuf *push = nv30->base.pushbuf;
    133    uint32_t base, offset, size;
    134    int i;
    135    uint32_t written = 0;
    136 
    137    for (i = 0; i < nv30->vertex->num_elements; i++) {
    138       struct pipe_vertex_element *ve = &nv30->vertex->pipe[i];
    139       const int b = ve->vertex_buffer_index;
    140       struct pipe_vertex_buffer *vb = &nv30->vtxbuf[b];
    141       struct nv04_resource *buf = nv04_resource(vb->buffer.resource);
    142 
    143       if (!(nv30->vbo_user & (1 << b)))
    144          continue;
    145 
    146       if (!vb->stride) {
    147          nv30_emit_vtxattr(nv30, vb, ve, i);
    148          continue;
    149       }
    150       nv30_vbuf_range(nv30, b, &base, &size);
    151 
    152       if (!(written & (1 << b))) {
    153          written |= 1 << b;
    154          nouveau_user_buffer_upload(&nv30->base, buf, base, size);
    155       }
    156 
    157       offset = vb->buffer_offset + ve->src_offset;
    158 
    159       BEGIN_NV04(push, NV30_3D(VTXBUF(i)), 1);
    160       PUSH_RESRC(push, NV30_3D(VTXBUF(i)), BUFCTX_VTXTMP, buf, offset,
    161                        NOUVEAU_BO_LOW | NOUVEAU_BO_RD,
    162                        0, NV30_3D_VTXBUF_DMA1);
    163    }
    164    nv30->base.vbo_dirty = true;
    165 }
    166 
    167 static inline void
    168 nv30_release_user_vbufs(struct nv30_context *nv30)
    169 {
    170    uint32_t vbo_user = nv30->vbo_user;
    171 
    172    while (vbo_user) {
    173       int i = ffs(vbo_user) - 1;
    174       vbo_user &= ~(1 << i);
    175 
    176       nouveau_buffer_release_gpu_storage(nv04_resource(nv30->vtxbuf[i].buffer.resource));
    177    }
    178 
    179    nouveau_bufctx_reset(nv30->bufctx, BUFCTX_VTXTMP);
    180 }
    181 
    182 void
    183 nv30_vbo_validate(struct nv30_context *nv30)
    184 {
    185    struct nouveau_pushbuf *push = nv30->base.pushbuf;
    186    struct nv30_vertex_stateobj *vertex = nv30->vertex;
    187    struct pipe_vertex_element *ve;
    188    struct pipe_vertex_buffer *vb;
    189    unsigned i, redefine;
    190 
    191    nouveau_bufctx_reset(nv30->bufctx, BUFCTX_VTXBUF);
    192    if (!nv30->vertex || nv30->draw_flags)
    193       return;
    194 
    195 #ifdef PIPE_ARCH_BIG_ENDIAN
    196    if (1) { /* Figure out where the buffers are getting messed up */
    197 #else
    198    if (unlikely(vertex->need_conversion)) {
    199 #endif
    200       nv30->vbo_fifo = ~0;
    201       nv30->vbo_user = 0;
    202    } else {
    203       nv30_prevalidate_vbufs(nv30);
    204    }
    205 
    206    if (!PUSH_SPACE(push, 128))
    207       return;
    208 
    209    redefine = MAX2(vertex->num_elements, nv30->state.num_vtxelts);
    210    if (redefine == 0)
    211       return;
    212 
    213    BEGIN_NV04(push, NV30_3D(VTXFMT(0)), redefine);
    214 
    215    for (i = 0; i < vertex->num_elements; i++) {
    216       ve = &vertex->pipe[i];
    217       vb = &nv30->vtxbuf[ve->vertex_buffer_index];
    218 
    219       if (likely(vb->stride) || nv30->vbo_fifo)
    220          PUSH_DATA (push, (vb->stride << 8) | vertex->element[i].state);
    221       else
    222          PUSH_DATA (push, NV30_3D_VTXFMT_TYPE_V32_FLOAT);
    223    }
    224 
    225    for (; i < nv30->state.num_vtxelts; i++) {
    226       PUSH_DATA (push, NV30_3D_VTXFMT_TYPE_V32_FLOAT);
    227    }
    228 
    229    for (i = 0; i < vertex->num_elements; i++) {
    230       struct nv04_resource *res;
    231       unsigned offset;
    232       bool user;
    233 
    234       ve = &vertex->pipe[i];
    235       vb = &nv30->vtxbuf[ve->vertex_buffer_index];
    236       user = (nv30->vbo_user & (1 << ve->vertex_buffer_index));
    237 
    238       res = nv04_resource(vb->buffer.resource);
    239 
    240       if (nv30->vbo_fifo || unlikely(vb->stride == 0)) {
    241          if (!nv30->vbo_fifo)
    242             nv30_emit_vtxattr(nv30, vb, ve, i);
    243          continue;
    244       }
    245 
    246       offset = ve->src_offset + vb->buffer_offset;
    247 
    248       BEGIN_NV04(push, NV30_3D(VTXBUF(i)), 1);
    249       PUSH_RESRC(push, NV30_3D(VTXBUF(i)), user ? BUFCTX_VTXTMP : BUFCTX_VTXBUF,
    250                        res, offset, NOUVEAU_BO_LOW | NOUVEAU_BO_RD,
    251                        0, NV30_3D_VTXBUF_DMA1);
    252    }
    253 
    254    nv30->state.num_vtxelts = vertex->num_elements;
    255 }
    256 
    257 static void *
    258 nv30_vertex_state_create(struct pipe_context *pipe, unsigned num_elements,
    259                          const struct pipe_vertex_element *elements)
    260 {
    261     struct nv30_vertex_stateobj *so;
    262     struct translate_key transkey;
    263     unsigned i;
    264 
    265     so = MALLOC(sizeof(*so) + sizeof(*so->element) * num_elements);
    266     if (!so)
    267         return NULL;
    268     memcpy(so->pipe, elements, sizeof(*elements) * num_elements);
    269     so->num_elements = num_elements;
    270     so->need_conversion = false;
    271 
    272     transkey.nr_elements = 0;
    273     transkey.output_stride = 0;
    274 
    275     for (i = 0; i < num_elements; i++) {
    276         const struct pipe_vertex_element *ve = &elements[i];
    277         const unsigned vbi = ve->vertex_buffer_index;
    278         enum pipe_format fmt = ve->src_format;
    279 
    280         so->element[i].state = nv30_vtxfmt(pipe->screen, fmt)->hw;
    281         if (!so->element[i].state) {
    282             switch (util_format_get_nr_components(fmt)) {
    283             case 1: fmt = PIPE_FORMAT_R32_FLOAT; break;
    284             case 2: fmt = PIPE_FORMAT_R32G32_FLOAT; break;
    285             case 3: fmt = PIPE_FORMAT_R32G32B32_FLOAT; break;
    286             case 4: fmt = PIPE_FORMAT_R32G32B32A32_FLOAT; break;
    287             default:
    288                 assert(0);
    289                 FREE(so);
    290                 return NULL;
    291             }
    292             so->element[i].state = nv30_vtxfmt(pipe->screen, fmt)->hw;
    293             so->need_conversion = true;
    294         }
    295 
    296         if (1) {
    297             unsigned j = transkey.nr_elements++;
    298 
    299             transkey.element[j].type = TRANSLATE_ELEMENT_NORMAL;
    300             transkey.element[j].input_format = ve->src_format;
    301             transkey.element[j].input_buffer = vbi;
    302             transkey.element[j].input_offset = ve->src_offset;
    303             transkey.element[j].instance_divisor = ve->instance_divisor;
    304 
    305             transkey.element[j].output_format = fmt;
    306             transkey.element[j].output_offset = transkey.output_stride;
    307             transkey.output_stride += (util_format_get_stride(fmt, 1) + 3) & ~3;
    308         }
    309     }
    310 
    311     so->translate = translate_create(&transkey);
    312     so->vtx_size = transkey.output_stride / 4;
    313     so->vtx_per_packet_max = NV04_PFIFO_MAX_PACKET_LEN / MAX2(so->vtx_size, 1);
    314     return so;
    315 }
    316 
    317 static void
    318 nv30_vertex_state_delete(struct pipe_context *pipe, void *hwcso)
    319 {
    320    struct nv30_vertex_stateobj *so = hwcso;
    321 
    322    if (so->translate)
    323       so->translate->release(so->translate);
    324    FREE(hwcso);
    325 }
    326 
    327 static void
    328 nv30_vertex_state_bind(struct pipe_context *pipe, void *hwcso)
    329 {
    330    struct nv30_context *nv30 = nv30_context(pipe);
    331 
    332    nv30->vertex = hwcso;
    333    nv30->dirty |= NV30_NEW_VERTEX;
    334 }
    335 
    336 static void
    337 nv30_draw_arrays(struct nv30_context *nv30,
    338                  unsigned mode, unsigned start, unsigned count,
    339                  unsigned instance_count)
    340 {
    341    struct nouveau_pushbuf *push = nv30->base.pushbuf;
    342    unsigned prim;
    343 
    344    prim = nv30_prim_gl(mode);
    345 
    346    BEGIN_NV04(push, NV30_3D(VERTEX_BEGIN_END), 1);
    347    PUSH_DATA (push, prim);
    348    while (count) {
    349       const unsigned mpush = 2047 * 256;
    350       unsigned npush  = (count > mpush) ? mpush : count;
    351       unsigned wpush  = ((npush + 255) & ~255) >> 8;
    352 
    353       count -= npush;
    354 
    355       BEGIN_NI04(push, NV30_3D(VB_VERTEX_BATCH), wpush);
    356       while (npush >= 256) {
    357          PUSH_DATA (push, 0xff000000 | start);
    358          start += 256;
    359          npush -= 256;
    360       }
    361 
    362       if (npush)
    363          PUSH_DATA (push, ((npush - 1) << 24) | start);
    364    }
    365    BEGIN_NV04(push, NV30_3D(VERTEX_BEGIN_END), 1);
    366    PUSH_DATA (push, NV30_3D_VERTEX_BEGIN_END_STOP);
    367 }
    368 
    369 static void
    370 nv30_draw_elements_inline_u08(struct nouveau_pushbuf *push, const uint8_t *map,
    371                               unsigned start, unsigned count)
    372 {
    373    map += start;
    374 
    375    if (count & 1) {
    376       BEGIN_NV04(push, NV30_3D(VB_ELEMENT_U32), 1);
    377       PUSH_DATA (push, *map++);
    378    }
    379 
    380    count >>= 1;
    381    while (count) {
    382       unsigned npush = MIN2(count, NV04_PFIFO_MAX_PACKET_LEN);
    383       count -= npush;
    384 
    385       BEGIN_NI04(push, NV30_3D(VB_ELEMENT_U16), npush);
    386       while (npush--) {
    387          PUSH_DATA (push, (map[1] << 16) | map[0]);
    388          map += 2;
    389       }
    390    }
    391 
    392 }
    393 
    394 static void
    395 nv30_draw_elements_inline_u16(struct nouveau_pushbuf *push, const uint16_t *map,
    396                               unsigned start, unsigned count)
    397 {
    398    map += start;
    399 
    400    if (count & 1) {
    401       BEGIN_NV04(push, NV30_3D(VB_ELEMENT_U32), 1);
    402       PUSH_DATA (push, *map++);
    403    }
    404 
    405    count >>= 1;
    406    while (count) {
    407       unsigned npush = MIN2(count, NV04_PFIFO_MAX_PACKET_LEN);
    408       count -= npush;
    409 
    410       BEGIN_NI04(push, NV30_3D(VB_ELEMENT_U16), npush);
    411       while (npush--) {
    412          PUSH_DATA (push, (map[1] << 16) | map[0]);
    413          map += 2;
    414       }
    415    }
    416 }
    417 
    418 static void
    419 nv30_draw_elements_inline_u32(struct nouveau_pushbuf *push, const uint32_t *map,
    420                               unsigned start, unsigned count)
    421 {
    422    map += start;
    423 
    424    while (count) {
    425       const unsigned nr = MIN2(count, NV04_PFIFO_MAX_PACKET_LEN);
    426 
    427       BEGIN_NI04(push, NV30_3D(VB_ELEMENT_U32), nr);
    428       PUSH_DATAp(push, map, nr);
    429 
    430       map += nr;
    431       count -= nr;
    432    }
    433 }
    434 
    435 static void
    436 nv30_draw_elements_inline_u32_short(struct nouveau_pushbuf *push,
    437                                     const uint32_t *map,
    438                                     unsigned start, unsigned count)
    439 {
    440    map += start;
    441 
    442    if (count & 1) {
    443       BEGIN_NV04(push, NV30_3D(VB_ELEMENT_U32), 1);
    444       PUSH_DATA (push, *map++);
    445    }
    446 
    447    count >>= 1;
    448    while (count) {
    449       unsigned npush = MIN2(count, NV04_PFIFO_MAX_PACKET_LEN);
    450       count -= npush;
    451 
    452       BEGIN_NI04(push, NV30_3D(VB_ELEMENT_U16), npush);
    453       while (npush--) {
    454          PUSH_DATA (push, (map[1] << 16) | map[0]);
    455          map += 2;
    456       }
    457    }
    458 }
    459 
    460 static void
    461 nv30_draw_elements(struct nv30_context *nv30, bool shorten,
    462                    const struct pipe_draw_info *info,
    463                    unsigned mode, unsigned start, unsigned count,
    464                    unsigned instance_count, int32_t index_bias,
    465 		   unsigned index_size)
    466 {
    467    struct nouveau_pushbuf *push = nv30->base.pushbuf;
    468    struct nouveau_object *eng3d = nv30->screen->eng3d;
    469    unsigned prim = nv30_prim_gl(mode);
    470 
    471    if (eng3d->oclass >= NV40_3D_CLASS && index_bias != nv30->state.index_bias) {
    472       BEGIN_NV04(push, NV40_3D(VB_ELEMENT_BASE), 1);
    473       PUSH_DATA (push, index_bias);
    474       nv30->state.index_bias = index_bias;
    475    }
    476 
    477    if (eng3d->oclass == NV40_3D_CLASS && index_size > 1 &&
    478        !info->has_user_indices) {
    479       struct nv04_resource *res = nv04_resource(info->index.resource);
    480       unsigned offset = 0;
    481 
    482       assert(nouveau_resource_mapped_by_gpu(&res->base));
    483 
    484       BEGIN_NV04(push, NV30_3D(IDXBUF_OFFSET), 2);
    485       PUSH_RESRC(push, NV30_3D(IDXBUF_OFFSET), BUFCTX_IDXBUF, res, offset,
    486                        NOUVEAU_BO_LOW | NOUVEAU_BO_RD, 0, 0);
    487       PUSH_MTHD (push, NV30_3D(IDXBUF_FORMAT), BUFCTX_IDXBUF, res->bo,
    488                        (index_size == 2) ? 0x00000010 : 0x00000000,
    489                        res->domain | NOUVEAU_BO_RD,
    490                        0, NV30_3D_IDXBUF_FORMAT_DMA1);
    491       BEGIN_NV04(push, NV30_3D(VERTEX_BEGIN_END), 1);
    492       PUSH_DATA (push, prim);
    493       while (count) {
    494          const unsigned mpush = 2047 * 256;
    495          unsigned npush  = (count > mpush) ? mpush : count;
    496          unsigned wpush  = ((npush + 255) & ~255) >> 8;
    497 
    498          count -= npush;
    499 
    500          BEGIN_NI04(push, NV30_3D(VB_INDEX_BATCH), wpush);
    501          while (npush >= 256) {
    502             PUSH_DATA (push, 0xff000000 | start);
    503             start += 256;
    504             npush -= 256;
    505          }
    506 
    507          if (npush)
    508             PUSH_DATA (push, ((npush - 1) << 24) | start);
    509       }
    510       BEGIN_NV04(push, NV30_3D(VERTEX_BEGIN_END), 1);
    511       PUSH_DATA (push, NV30_3D_VERTEX_BEGIN_END_STOP);
    512       PUSH_RESET(push, BUFCTX_IDXBUF);
    513    } else {
    514       const void *data;
    515       if (!info->has_user_indices)
    516          data = nouveau_resource_map_offset(&nv30->base,
    517                                             nv04_resource(info->index.resource),
    518                                             start * index_size, NOUVEAU_BO_RD);
    519       else
    520          data = info->index.user;
    521       if (!data)
    522          return;
    523 
    524       BEGIN_NV04(push, NV30_3D(VERTEX_BEGIN_END), 1);
    525       PUSH_DATA (push, prim);
    526       switch (index_size) {
    527       case 1:
    528          nv30_draw_elements_inline_u08(push, data, start, count);
    529          break;
    530       case 2:
    531          nv30_draw_elements_inline_u16(push, data, start, count);
    532          break;
    533       case 4:
    534          if (shorten)
    535             nv30_draw_elements_inline_u32_short(push, data, start, count);
    536          else
    537             nv30_draw_elements_inline_u32(push, data, start, count);
    538          break;
    539       default:
    540          assert(0);
    541          return;
    542       }
    543       BEGIN_NV04(push, NV30_3D(VERTEX_BEGIN_END), 1);
    544       PUSH_DATA (push, NV30_3D_VERTEX_BEGIN_END_STOP);
    545    }
    546 }
    547 
    548 static void
    549 nv30_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
    550 {
    551    struct nv30_context *nv30 = nv30_context(pipe);
    552    struct nouveau_pushbuf *push = nv30->base.pushbuf;
    553    int i;
    554 
    555    if (!info->primitive_restart &&
    556        !u_trim_pipe_prim(info->mode, (unsigned*)&info->count))
    557       return;
    558 
    559    /* For picking only a few vertices from a large user buffer, push is better,
    560     * if index count is larger and we expect repeated vertices, suggest upload.
    561     */
    562    nv30->vbo_push_hint = /* the 64 is heuristic */
    563       !(info->index_size &&
    564         ((info->max_index - info->min_index + 64) < info->count));
    565 
    566    nv30->vbo_min_index = info->min_index;
    567    nv30->vbo_max_index = info->max_index;
    568 
    569    if (nv30->vbo_push_hint != !!nv30->vbo_fifo)
    570       nv30->dirty |= NV30_NEW_ARRAYS;
    571 
    572    push->user_priv = &nv30->bufctx;
    573    if (nv30->vbo_user && !(nv30->dirty & (NV30_NEW_VERTEX | NV30_NEW_ARRAYS)))
    574       nv30_update_user_vbufs(nv30);
    575 
    576    nv30_state_validate(nv30, ~0, true);
    577    if (nv30->draw_flags) {
    578       nv30_render_vbo(pipe, info);
    579       return;
    580    } else
    581    if (nv30->vbo_fifo) {
    582       nv30_push_vbo(nv30, info);
    583       return;
    584    }
    585 
    586    for (i = 0; i < nv30->num_vtxbufs && !nv30->base.vbo_dirty; ++i) {
    587       if (!nv30->vtxbuf[i].buffer.resource)
    588          continue;
    589       if (nv30->vtxbuf[i].buffer.resource->flags & PIPE_RESOURCE_FLAG_MAP_COHERENT)
    590          nv30->base.vbo_dirty = true;
    591    }
    592 
    593    if (!nv30->base.vbo_dirty && info->index_size && !info->has_user_indices &&
    594        info->index.resource->flags & PIPE_RESOURCE_FLAG_MAP_COHERENT)
    595       nv30->base.vbo_dirty = true;
    596 
    597    if (nv30->base.vbo_dirty) {
    598       BEGIN_NV04(push, NV30_3D(VTX_CACHE_INVALIDATE_1710), 1);
    599       PUSH_DATA (push, 0);
    600       nv30->base.vbo_dirty = false;
    601    }
    602 
    603    if (!info->index_size) {
    604       nv30_draw_arrays(nv30,
    605                        info->mode, info->start, info->count,
    606                        info->instance_count);
    607    } else {
    608       bool shorten = info->max_index <= 65535;
    609 
    610       if (info->primitive_restart != nv30->state.prim_restart) {
    611          if (info->primitive_restart) {
    612             BEGIN_NV04(push, NV40_3D(PRIM_RESTART_ENABLE), 2);
    613             PUSH_DATA (push, 1);
    614             PUSH_DATA (push, info->restart_index);
    615 
    616             if (info->restart_index > 65535)
    617                shorten = false;
    618          } else {
    619             BEGIN_NV04(push, NV40_3D(PRIM_RESTART_ENABLE), 1);
    620             PUSH_DATA (push, 0);
    621          }
    622          nv30->state.prim_restart = info->primitive_restart;
    623       } else
    624       if (info->primitive_restart) {
    625          BEGIN_NV04(push, NV40_3D(PRIM_RESTART_INDEX), 1);
    626          PUSH_DATA (push, info->restart_index);
    627 
    628          if (info->restart_index > 65535)
    629             shorten = false;
    630       }
    631 
    632       nv30_draw_elements(nv30, shorten, info,
    633                          info->mode, info->start, info->count,
    634                          info->instance_count, info->index_bias, info->index_size);
    635    }
    636 
    637    nv30_state_release(nv30);
    638    nv30_release_user_vbufs(nv30);
    639 }
    640 
    641 void
    642 nv30_vbo_init(struct pipe_context *pipe)
    643 {
    644    pipe->create_vertex_elements_state = nv30_vertex_state_create;
    645    pipe->delete_vertex_elements_state = nv30_vertex_state_delete;
    646    pipe->bind_vertex_elements_state = nv30_vertex_state_bind;
    647    pipe->draw_vbo = nv30_draw_vbo;
    648 }
    649