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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 "pipe/p_context.h"
  27. #include "pipe/p_state.h"
  28. #include "util/u_inlines.h"
  29. #include "util/u_format.h"
  30. #include "translate/translate.h"
  31.  
  32. #include "nouveau/nv_object.xml.h"
  33. #include "nv30-40_3d.xml.h"
  34. #include "nv30_context.h"
  35. #include "nv30_resource.h"
  36.  
  37. struct push_context {
  38.    struct nouveau_pushbuf *push;
  39.  
  40.    const void *idxbuf;
  41.  
  42.    float edgeflag;
  43.    int edgeflag_attr;
  44.  
  45.    uint32_t vertex_words;
  46.    uint32_t packet_vertex_limit;
  47.  
  48.    struct translate *translate;
  49.  
  50.    boolean primitive_restart;
  51.    uint32_t prim;
  52.    uint32_t restart_index;
  53. };
  54.  
  55. static INLINE unsigned
  56. prim_restart_search_i08(uint8_t *elts, unsigned push, uint8_t index)
  57. {
  58.    unsigned i;
  59.    for (i = 0; i < push; ++i)
  60.       if (elts[i] == index)
  61.          break;
  62.    return i;
  63. }
  64.  
  65. static INLINE unsigned
  66. prim_restart_search_i16(uint16_t *elts, unsigned push, uint16_t index)
  67. {
  68.    unsigned i;
  69.    for (i = 0; i < push; ++i)
  70.       if (elts[i] == index)
  71.          break;
  72.    return i;
  73. }
  74.  
  75. static INLINE unsigned
  76. prim_restart_search_i32(uint32_t *elts, unsigned push, uint32_t index)
  77. {
  78.    unsigned i;
  79.    for (i = 0; i < push; ++i)
  80.       if (elts[i] == index)
  81.          break;
  82.    return i;
  83. }
  84.  
  85. static void
  86. emit_vertices_i08(struct push_context *ctx, unsigned start, unsigned count)
  87. {
  88.    uint8_t *elts = (uint8_t *)ctx->idxbuf + start;
  89.  
  90.    while (count) {
  91.       unsigned push = MIN2(count, ctx->packet_vertex_limit);
  92.       unsigned size, nr;
  93.  
  94.       nr = push;
  95.       if (ctx->primitive_restart)
  96.          nr = prim_restart_search_i08(elts, push, ctx->restart_index);
  97.  
  98.       size = ctx->vertex_words * nr;
  99.  
  100.       BEGIN_NI04(ctx->push, NV30_3D(VERTEX_DATA), size);
  101.  
  102.       ctx->translate->run_elts8(ctx->translate, elts, nr, 0, 0, ctx->push->cur);
  103.  
  104.       ctx->push->cur += size;
  105.       count -= nr;
  106.       elts += nr;
  107.  
  108.       if (nr != push) {
  109.          BEGIN_NV04(ctx->push, NV30_3D(VB_ELEMENT_U32), 1);
  110.          PUSH_DATA (ctx->push, ctx->restart_index);
  111.          count--;
  112.          elts++;
  113.       }
  114.    }
  115. }
  116.  
  117. static void
  118. emit_vertices_i16(struct push_context *ctx, unsigned start, unsigned count)
  119. {
  120.    uint16_t *elts = (uint16_t *)ctx->idxbuf + start;
  121.  
  122.    while (count) {
  123.       unsigned push = MIN2(count, ctx->packet_vertex_limit);
  124.       unsigned size, nr;
  125.  
  126.       nr = push;
  127.       if (ctx->primitive_restart)
  128.          nr = prim_restart_search_i16(elts, push, ctx->restart_index);
  129.  
  130.       size = ctx->vertex_words * nr;
  131.  
  132.       BEGIN_NI04(ctx->push, NV30_3D(VERTEX_DATA), size);
  133.  
  134.       ctx->translate->run_elts16(ctx->translate, elts, nr, 0, 0, ctx->push->cur);
  135.  
  136.       ctx->push->cur += size;
  137.       count -= nr;
  138.       elts += nr;
  139.  
  140.       if (nr != push) {
  141.          BEGIN_NV04(ctx->push, NV30_3D(VB_ELEMENT_U32), 1);
  142.          PUSH_DATA (ctx->push, ctx->restart_index);
  143.          count--;
  144.          elts++;
  145.       }
  146.    }
  147. }
  148.  
  149. static void
  150. emit_vertices_i32(struct push_context *ctx, unsigned start, unsigned count)
  151. {
  152.    uint32_t *elts = (uint32_t *)ctx->idxbuf + start;
  153.  
  154.    while (count) {
  155.       unsigned push = MIN2(count, ctx->packet_vertex_limit);
  156.       unsigned size, nr;
  157.  
  158.       nr = push;
  159.       if (ctx->primitive_restart)
  160.          nr = prim_restart_search_i32(elts, push, ctx->restart_index);
  161.  
  162.       size = ctx->vertex_words * nr;
  163.  
  164.       BEGIN_NI04(ctx->push, NV30_3D(VERTEX_DATA), size);
  165.  
  166.       ctx->translate->run_elts(ctx->translate, elts, nr, 0, 0, ctx->push->cur);
  167.  
  168.       ctx->push->cur += size;
  169.       count -= nr;
  170.       elts += nr;
  171.  
  172.       if (nr != push) {
  173.          BEGIN_NV04(ctx->push, NV30_3D(VB_ELEMENT_U32), 1);
  174.          PUSH_DATA (ctx->push, ctx->restart_index);
  175.          count--;
  176.          elts++;
  177.       }
  178.    }
  179. }
  180.  
  181. static void
  182. emit_vertices_seq(struct push_context *ctx, unsigned start, unsigned count)
  183. {
  184.    while (count) {
  185.       unsigned push = MIN2(count, ctx->packet_vertex_limit);
  186.       unsigned size = ctx->vertex_words * push;
  187.  
  188.       BEGIN_NI04(ctx->push, NV30_3D(VERTEX_DATA), size);
  189.  
  190.       ctx->translate->run(ctx->translate, start, push, 0, 0, ctx->push->cur);
  191.       ctx->push->cur += size;
  192.       count -= push;
  193.       start += push;
  194.    }
  195. }
  196.  
  197. void
  198. nv30_push_vbo(struct nv30_context *nv30, const struct pipe_draw_info *info)
  199. {
  200.    struct push_context ctx;
  201.    unsigned i, index_size;
  202.    boolean apply_bias = info->indexed && info->index_bias;
  203.  
  204.    ctx.push = nv30->base.pushbuf;
  205.    ctx.translate = nv30->vertex->translate;
  206.    ctx.packet_vertex_limit = nv30->vertex->vtx_per_packet_max;
  207.    ctx.vertex_words = nv30->vertex->vtx_size;
  208.  
  209.    for (i = 0; i < nv30->num_vtxbufs; ++i) {
  210.       uint8_t *data;
  211.       struct pipe_vertex_buffer *vb = &nv30->vtxbuf[i];
  212.       struct nv04_resource *res = nv04_resource(vb->buffer);
  213.  
  214.       if (!vb->buffer && !vb->user_buffer) {
  215.          continue;
  216.       }
  217.  
  218.       data = nouveau_resource_map_offset(&nv30->base, res,
  219.                                          vb->buffer_offset, NOUVEAU_BO_RD);
  220.  
  221.       if (apply_bias)
  222.          data += info->index_bias * vb->stride;
  223.  
  224.       ctx.translate->set_buffer(ctx.translate, i, data, vb->stride, ~0);
  225.    }
  226.  
  227.    if (info->indexed) {
  228.       if (nv30->idxbuf.buffer)
  229.          ctx.idxbuf = nouveau_resource_map_offset(&nv30->base,
  230.             nv04_resource(nv30->idxbuf.buffer), nv30->idxbuf.offset,
  231.             NOUVEAU_BO_RD);
  232.       else
  233.          ctx.idxbuf = nv30->idxbuf.user_buffer;
  234.       if (!ctx.idxbuf) {
  235.          nv30_state_release(nv30);
  236.          return;
  237.       }
  238.       index_size = nv30->idxbuf.index_size;
  239.       ctx.primitive_restart = info->primitive_restart;
  240.       ctx.restart_index = info->restart_index;
  241.    } else {
  242.       ctx.idxbuf = NULL;
  243.       index_size = 0;
  244.       ctx.primitive_restart = FALSE;
  245.       ctx.restart_index = 0;
  246.    }
  247.  
  248.    if (nv30->screen->eng3d->oclass >= NV40_3D_CLASS) {
  249.       BEGIN_NV04(ctx.push, NV40_3D(PRIM_RESTART_ENABLE), 2);
  250.       PUSH_DATA (ctx.push, info->primitive_restart);
  251.       PUSH_DATA (ctx.push, info->restart_index);
  252.       nv30->state.prim_restart = info->primitive_restart;
  253.    }
  254.  
  255.    ctx.prim = nv30_prim_gl(info->mode);
  256.  
  257.    PUSH_RESET(ctx.push, BUFCTX_IDXBUF);
  258.    BEGIN_NV04(ctx.push, NV30_3D(VERTEX_BEGIN_END), 1);
  259.    PUSH_DATA (ctx.push, ctx.prim);
  260.    switch (index_size) {
  261.    case 0:
  262.       emit_vertices_seq(&ctx, info->start, info->count);
  263.       break;
  264.    case 1:
  265.       emit_vertices_i08(&ctx, info->start, info->count);
  266.       break;
  267.    case 2:
  268.       emit_vertices_i16(&ctx, info->start, info->count);
  269.       break;
  270.    case 4:
  271.       emit_vertices_i32(&ctx, info->start, info->count);
  272.       break;
  273.    default:
  274.       assert(0);
  275.       break;
  276.    }
  277.    BEGIN_NV04(ctx.push, NV30_3D(VERTEX_BEGIN_END), 1);
  278.    PUSH_DATA (ctx.push, NV30_3D_VERTEX_BEGIN_END_STOP);
  279.  
  280.    if (info->indexed)
  281.       nouveau_resource_unmap(nv04_resource(nv30->idxbuf.buffer));
  282.  
  283.    for (i = 0; i < nv30->num_vtxbufs; ++i) {
  284.       if (nv30->vtxbuf[i].buffer) {
  285.          nouveau_resource_unmap(nv04_resource(nv30->vtxbuf[i].buffer));
  286.       }
  287.    }
  288.  
  289.    nv30_state_release(nv30);
  290. }
  291.