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  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 "draw/draw_vbuf.h"
  27. #include "draw/draw_context.h"
  28. #include "draw/draw_vertex.h"
  29.  
  30. #include "util/u_debug.h"
  31. #include "util/u_inlines.h"
  32. #include "util/u_math.h"
  33. #include "util/u_memory.h"
  34.  
  35. #include "svga_context.h"
  36. #include "svga_state.h"
  37. #include "svga_swtnl.h"
  38.  
  39. #include "svga_types.h"
  40. #include "svga_reg.h"
  41. #include "svga3d_reg.h"
  42. #include "svga_draw.h"
  43. #include "svga_swtnl_private.h"
  44.  
  45.  
  46. static const struct vertex_info *
  47. svga_vbuf_render_get_vertex_info( struct vbuf_render *render )
  48. {
  49.    struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
  50.    struct svga_context *svga = svga_render->svga;
  51.  
  52.    svga_swtnl_update_vdecl(svga);
  53.  
  54.    return &svga_render->vertex_info;
  55. }
  56.  
  57.  
  58. static boolean
  59. svga_vbuf_render_allocate_vertices( struct vbuf_render *render,
  60.                                     ushort vertex_size,
  61.                                     ushort nr_vertices )
  62. {
  63.    struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
  64.    struct svga_context *svga = svga_render->svga;
  65.    struct pipe_screen *screen = svga->pipe.screen;
  66.    size_t size = (size_t)nr_vertices * (size_t)vertex_size;
  67.    boolean new_vbuf = FALSE;
  68.    boolean new_ibuf = FALSE;
  69.  
  70.    if (svga_render->vertex_size != vertex_size)
  71.       svga->swtnl.new_vdecl = TRUE;
  72.    svga_render->vertex_size = (size_t)vertex_size;
  73.  
  74.    if (svga->swtnl.new_vbuf)
  75.       new_ibuf = new_vbuf = TRUE;
  76.    svga->swtnl.new_vbuf = FALSE;
  77.  
  78.    if (svga_render->vbuf_size < svga_render->vbuf_offset + svga_render->vbuf_used + size)
  79.       new_vbuf = TRUE;
  80.  
  81.    if (new_vbuf)
  82.       pipe_resource_reference(&svga_render->vbuf, NULL);
  83.    if (new_ibuf)
  84.       pipe_resource_reference(&svga_render->ibuf, NULL);
  85.  
  86.    if (!svga_render->vbuf) {
  87.       svga_render->vbuf_size = MAX2(size, svga_render->vbuf_alloc_size);
  88.       svga_render->vbuf = pipe_buffer_create(screen,
  89.                                              PIPE_BIND_VERTEX_BUFFER,
  90.                                              PIPE_USAGE_STREAM,
  91.                                              svga_render->vbuf_size);
  92.       if(!svga_render->vbuf) {
  93.          svga_context_flush(svga, NULL);
  94.          assert(!svga_render->vbuf);
  95.          svga_render->vbuf = pipe_buffer_create(screen,
  96.                                                 PIPE_BIND_VERTEX_BUFFER,
  97.                                                 PIPE_USAGE_STREAM,
  98.                                                 svga_render->vbuf_size);
  99.          /* The buffer allocation may fail if we run out of memory.
  100.           * The draw module's vbuf code should handle that without crashing.
  101.           */
  102.       }
  103.  
  104.       svga->swtnl.new_vdecl = TRUE;
  105.       svga_render->vbuf_offset = 0;
  106.    } else {
  107.       svga_render->vbuf_offset += svga_render->vbuf_used;
  108.    }
  109.  
  110.    svga_render->vbuf_used = 0;
  111.  
  112.    if (svga->swtnl.new_vdecl)
  113.       svga_render->vdecl_offset = svga_render->vbuf_offset;
  114.  
  115.    return TRUE;
  116. }
  117.  
  118. static void *
  119. svga_vbuf_render_map_vertices( struct vbuf_render *render )
  120. {
  121.    struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
  122.    struct svga_context *svga = svga_render->svga;
  123.  
  124.    if (svga_render->vbuf) {
  125.       char *ptr = (char*)pipe_buffer_map(&svga->pipe,
  126.                                          svga_render->vbuf,
  127.                                          PIPE_TRANSFER_WRITE |
  128.                                          PIPE_TRANSFER_FLUSH_EXPLICIT |
  129.                                          PIPE_TRANSFER_DISCARD_RANGE |
  130.                                          PIPE_TRANSFER_UNSYNCHRONIZED,
  131.                                          &svga_render->vbuf_transfer);
  132.       if (ptr)
  133.          return ptr + svga_render->vbuf_offset;
  134.       else {
  135.          svga_render->vbuf_transfer = NULL;
  136.          return NULL;
  137.       }
  138.    }
  139.    else {
  140.       /* we probably ran out of memory when allocating the vertex buffer */
  141.       return NULL;
  142.    }
  143. }
  144.  
  145. static void
  146. svga_vbuf_render_unmap_vertices( struct vbuf_render *render,
  147.                                  ushort min_index,
  148.                                  ushort max_index )
  149. {
  150.    struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
  151.    struct svga_context *svga = svga_render->svga;
  152.    unsigned offset, length;
  153.    size_t used = svga_render->vertex_size * ((size_t)max_index + 1);
  154.  
  155.    offset = svga_render->vbuf_offset + svga_render->vertex_size * min_index;
  156.    length = svga_render->vertex_size * (max_index + 1 - min_index);
  157.    pipe_buffer_flush_mapped_range(&svga->pipe,
  158.                                   svga_render->vbuf_transfer,
  159.                                   offset, length);
  160.    pipe_buffer_unmap(&svga->pipe, svga_render->vbuf_transfer);
  161.    svga_render->min_index = min_index;
  162.    svga_render->max_index = max_index;
  163.    svga_render->vbuf_used = MAX2(svga_render->vbuf_used, used);
  164. }
  165.  
  166. static void
  167. svga_vbuf_render_set_primitive( struct vbuf_render *render,
  168.                                 unsigned prim )
  169. {
  170.    struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
  171.    svga_render->prim = prim;
  172. }
  173.  
  174. static void
  175. svga_vbuf_submit_state( struct svga_vbuf_render *svga_render )
  176. {
  177.    struct svga_context *svga = svga_render->svga;
  178.    SVGA3dVertexDecl vdecl[PIPE_MAX_ATTRIBS];
  179.    enum pipe_error ret;
  180.    unsigned i;
  181.  
  182.    /* if the vdecl or vbuf hasn't changed do nothing */
  183.    if (!svga->swtnl.new_vdecl)
  184.       return;
  185.  
  186.    memcpy(vdecl, svga_render->vdecl, sizeof(vdecl));
  187.  
  188.    /* flush the hw state */
  189.    ret = svga_hwtnl_flush(svga->hwtnl);
  190.    if (ret != PIPE_OK) {
  191.       svga_context_flush(svga, NULL);
  192.       ret = svga_hwtnl_flush(svga->hwtnl);
  193.       /* if we hit this path we might become synced with hw */
  194.       svga->swtnl.new_vbuf = TRUE;
  195.       assert(ret == 0);
  196.    }
  197.  
  198.    svga_hwtnl_reset_vdecl(svga->hwtnl, svga_render->vdecl_count);
  199.  
  200.    for (i = 0; i < svga_render->vdecl_count; i++) {
  201.       vdecl[i].array.offset += svga_render->vdecl_offset;
  202.  
  203.       svga_hwtnl_vdecl( svga->hwtnl,
  204.                         i,
  205.                         &vdecl[i],
  206.                         svga_render->vbuf );
  207.    }
  208.  
  209.    /* We have already taken care of flatshading, so let the hwtnl
  210.     * module use whatever is most convenient:
  211.     */
  212.    if (svga->state.sw.need_pipeline) {
  213.       svga_hwtnl_set_flatshade(svga->hwtnl, FALSE, FALSE);
  214.       svga_hwtnl_set_unfilled(svga->hwtnl, PIPE_POLYGON_MODE_FILL);
  215.    }
  216.    else {
  217.       svga_hwtnl_set_flatshade( svga->hwtnl,
  218.                                 svga->curr.rast->templ.flatshade,
  219.                                 svga->curr.rast->templ.flatshade_first );
  220.  
  221.       svga_hwtnl_set_unfilled( svga->hwtnl,
  222.                                svga->curr.rast->hw_unfilled );
  223.    }
  224.  
  225.    svga->swtnl.new_vdecl = FALSE;
  226. }
  227.  
  228. static void
  229. svga_vbuf_render_draw_arrays( struct vbuf_render *render,
  230.                               unsigned start,
  231.                               uint nr )
  232. {
  233.    struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
  234.    struct svga_context *svga = svga_render->svga;
  235.    unsigned bias = (svga_render->vbuf_offset - svga_render->vdecl_offset) / svga_render->vertex_size;
  236.    enum pipe_error ret = PIPE_OK;
  237.  
  238.    /* off to hardware */
  239.    svga_vbuf_submit_state(svga_render);
  240.  
  241.    /* Need to call update_state() again as the draw module may have
  242.     * altered some of our state behind our backs.  Testcase:
  243.     * redbook/polys.c
  244.     */
  245.    svga_update_state_retry( svga, SVGA_STATE_HW_DRAW );
  246.  
  247.    ret = svga_hwtnl_draw_arrays(svga->hwtnl, svga_render->prim, start + bias, nr);
  248.    if (ret != PIPE_OK) {
  249.       svga_context_flush(svga, NULL);
  250.       ret = svga_hwtnl_draw_arrays(svga->hwtnl, svga_render->prim, start + bias, nr);
  251.       svga->swtnl.new_vbuf = TRUE;
  252.       assert(ret == PIPE_OK);
  253.    }
  254. }
  255.  
  256.  
  257. static void
  258. svga_vbuf_render_draw_elements( struct vbuf_render *render,
  259.                                 const ushort *indices,
  260.                                 uint nr_indices)
  261. {
  262.    struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
  263.    struct svga_context *svga = svga_render->svga;
  264.    struct pipe_screen *screen = svga->pipe.screen;
  265.    int bias = (svga_render->vbuf_offset - svga_render->vdecl_offset) / svga_render->vertex_size;
  266.    boolean ret;
  267.    size_t size = 2 * nr_indices;
  268.  
  269.    assert(( svga_render->vbuf_offset - svga_render->vdecl_offset) % svga_render->vertex_size == 0);
  270.    
  271.    if (svga_render->ibuf_size < svga_render->ibuf_offset + size)
  272.       pipe_resource_reference(&svga_render->ibuf, NULL);
  273.  
  274.    if (!svga_render->ibuf) {
  275.       svga_render->ibuf_size = MAX2(size, svga_render->ibuf_alloc_size);
  276.       svga_render->ibuf = pipe_buffer_create(screen,
  277.                                              PIPE_BIND_INDEX_BUFFER,
  278.                                              PIPE_USAGE_STREAM,
  279.                                              svga_render->ibuf_size);
  280.       svga_render->ibuf_offset = 0;
  281.    }
  282.  
  283.    pipe_buffer_write_nooverlap(&svga->pipe, svga_render->ibuf,
  284.                                svga_render->ibuf_offset, 2 * nr_indices, indices);
  285.  
  286.    /* off to hardware */
  287.    svga_vbuf_submit_state(svga_render);
  288.  
  289.    /* Need to call update_state() again as the draw module may have
  290.     * altered some of our state behind our backs.  Testcase:
  291.     * redbook/polys.c
  292.     */
  293.    svga_update_state_retry( svga, SVGA_STATE_HW_DRAW );
  294.  
  295.    ret = svga_hwtnl_draw_range_elements(svga->hwtnl,
  296.                                         svga_render->ibuf,
  297.                                         2,
  298.                                         bias,
  299.                                         svga_render->min_index,
  300.                                         svga_render->max_index,
  301.                                         svga_render->prim,
  302.                                         svga_render->ibuf_offset / 2, nr_indices);
  303.    if(ret != PIPE_OK) {
  304.       svga_context_flush(svga, NULL);
  305.       ret = svga_hwtnl_draw_range_elements(svga->hwtnl,
  306.                                            svga_render->ibuf,
  307.                                            2,
  308.                                            bias,
  309.                                            svga_render->min_index,
  310.                                            svga_render->max_index,
  311.                                            svga_render->prim,
  312.                                            svga_render->ibuf_offset / 2, nr_indices);
  313.       svga->swtnl.new_vbuf = TRUE;
  314.       assert(ret == PIPE_OK);
  315.    }
  316.  
  317.    svga_render->ibuf_offset += size;
  318. }
  319.  
  320.  
  321. static void
  322. svga_vbuf_render_release_vertices( struct vbuf_render *render )
  323. {
  324.  
  325. }
  326.  
  327.  
  328. static void
  329. svga_vbuf_render_destroy( struct vbuf_render *render )
  330. {
  331.    struct svga_vbuf_render *svga_render = svga_vbuf_render(render);
  332.  
  333.    pipe_resource_reference(&svga_render->vbuf, NULL);
  334.    pipe_resource_reference(&svga_render->ibuf, NULL);
  335.    FREE(svga_render);
  336. }
  337.  
  338.  
  339. /**
  340.  * Create a new primitive render.
  341.  */
  342. struct vbuf_render *
  343. svga_vbuf_render_create( struct svga_context *svga )
  344. {
  345.    struct svga_vbuf_render *svga_render = CALLOC_STRUCT(svga_vbuf_render);
  346.  
  347.    svga_render->svga = svga;
  348.    svga_render->ibuf_size = 0;
  349.    svga_render->vbuf_size = 0;
  350.    svga_render->ibuf_alloc_size = 4*1024;
  351.    svga_render->vbuf_alloc_size = 64*1024;
  352.    svga_render->base.max_vertex_buffer_bytes = 64*1024/10;
  353.    svga_render->base.max_indices = 65536;
  354.    svga_render->base.get_vertex_info = svga_vbuf_render_get_vertex_info;
  355.    svga_render->base.allocate_vertices = svga_vbuf_render_allocate_vertices;
  356.    svga_render->base.map_vertices = svga_vbuf_render_map_vertices;
  357.    svga_render->base.unmap_vertices = svga_vbuf_render_unmap_vertices;
  358.    svga_render->base.set_primitive = svga_vbuf_render_set_primitive;
  359.    svga_render->base.draw_elements = svga_vbuf_render_draw_elements;
  360.    svga_render->base.draw_arrays = svga_vbuf_render_draw_arrays;
  361.    svga_render->base.release_vertices = svga_vbuf_render_release_vertices;
  362.    svga_render->base.destroy = svga_vbuf_render_destroy;
  363.  
  364.    return &svga_render->base;
  365. }
  366.