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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_context.h"
  27. #include "draw/draw_vbuf.h"
  28. #include "util/u_inlines.h"
  29. #include "pipe/p_state.h"
  30.  
  31. #include "svga_context.h"
  32. #include "svga_swtnl.h"
  33. #include "svga_state.h"
  34. #include "svga_swtnl_private.h"
  35.  
  36.  
  37.  
  38. enum pipe_error
  39. svga_swtnl_draw_vbo(struct svga_context *svga,
  40.                     const struct pipe_draw_info *info)
  41. {
  42.    struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = { 0 };
  43.    struct pipe_transfer *ib_transfer = NULL;
  44.    struct pipe_transfer *cb_transfer = NULL;
  45.    struct draw_context *draw = svga->swtnl.draw;
  46.    unsigned i;
  47.    const void *map;
  48.    enum pipe_error ret;
  49.  
  50.    assert(!svga->dirty);
  51.    assert(svga->state.sw.need_swtnl);
  52.    assert(draw);
  53.  
  54.    /* Make sure that the need_swtnl flag does not go away */
  55.    svga->state.sw.in_swtnl_draw = TRUE;
  56.  
  57.    ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  58.    if (ret != PIPE_OK) {
  59.       svga_context_flush(svga, NULL);
  60.       ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  61.       svga->swtnl.new_vbuf = TRUE;
  62.       assert(ret == PIPE_OK);
  63.    }
  64.  
  65.    /*
  66.     * Map vertex buffers
  67.     */
  68.    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
  69.       if (svga->curr.vb[i].buffer) {
  70.          map = pipe_buffer_map(&svga->pipe,
  71.                                svga->curr.vb[i].buffer,
  72.                                PIPE_TRANSFER_READ,
  73.                                &vb_transfer[i]);
  74.  
  75.          draw_set_mapped_vertex_buffer(draw, i, map, ~0);
  76.       }
  77.    }
  78.  
  79.    /* Map index buffer, if present */
  80.    map = NULL;
  81.    if (info->indexed && svga->curr.ib.buffer) {
  82.       map = pipe_buffer_map(&svga->pipe, svga->curr.ib.buffer,
  83.                             PIPE_TRANSFER_READ,
  84.                             &ib_transfer);
  85.       draw_set_indexes(draw,
  86.                        (const ubyte *) map + svga->curr.ib.offset,
  87.                        svga->curr.ib.index_size, ~0);
  88.    }
  89.  
  90.    if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
  91.       map = pipe_buffer_map(&svga->pipe,
  92.                             svga->curr.cb[PIPE_SHADER_VERTEX],
  93.                             PIPE_TRANSFER_READ,
  94.                             &cb_transfer);
  95.       assert(map);
  96.       draw_set_mapped_constant_buffer(
  97.          draw, PIPE_SHADER_VERTEX, 0,
  98.          map,
  99.          svga->curr.cb[PIPE_SHADER_VERTEX]->width0);
  100.    }
  101.  
  102.    draw_vbo(draw, info);
  103.  
  104.    draw_flush(svga->swtnl.draw);
  105.  
  106.    /* Ensure the draw module didn't touch this */
  107.    assert(i == svga->curr.num_vertex_buffers);
  108.    
  109.    /*
  110.     * unmap vertex/index buffers
  111.     */
  112.    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
  113.       if (svga->curr.vb[i].buffer) {
  114.          pipe_buffer_unmap(&svga->pipe, vb_transfer[i]);
  115.          draw_set_mapped_vertex_buffer(draw, i, NULL, 0);
  116.       }
  117.    }
  118.  
  119.    if (ib_transfer) {
  120.       pipe_buffer_unmap(&svga->pipe, ib_transfer);
  121.       draw_set_indexes(draw, NULL, 0, 0);
  122.    }
  123.  
  124.    if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
  125.       pipe_buffer_unmap(&svga->pipe, cb_transfer);
  126.    }
  127.  
  128.    /* Now safe to remove the need_swtnl flag in any update_state call */
  129.    svga->state.sw.in_swtnl_draw = FALSE;
  130.    svga->dirty |= SVGA_NEW_NEED_PIPELINE | SVGA_NEW_NEED_SWVFETCH;
  131.  
  132.    return ret;
  133. }
  134.  
  135.  
  136.  
  137.  
  138. boolean svga_init_swtnl( struct svga_context *svga )
  139. {
  140.    svga->swtnl.backend = svga_vbuf_render_create(svga);
  141.    if(!svga->swtnl.backend)
  142.       goto fail;
  143.  
  144.    /*
  145.     * Create drawing context and plug our rendering stage into it.
  146.     */
  147.    svga->swtnl.draw = draw_create(&svga->pipe);
  148.    if (svga->swtnl.draw == NULL)
  149.       goto fail;
  150.  
  151.  
  152.    draw_set_rasterize_stage(svga->swtnl.draw,
  153.                             draw_vbuf_stage( svga->swtnl.draw, svga->swtnl.backend ));
  154.  
  155.    draw_set_render(svga->swtnl.draw, svga->swtnl.backend);
  156.  
  157.    svga->blitter = util_blitter_create(&svga->pipe);
  158.    if (!svga->blitter)
  159.       goto fail;
  160.  
  161.    /* must be done before installing Draw stages */
  162.    util_blitter_cache_all_shaders(svga->blitter);
  163.  
  164.    draw_install_aaline_stage(svga->swtnl.draw, &svga->pipe);
  165.    draw_install_aapoint_stage(svga->swtnl.draw, &svga->pipe);
  166.    draw_install_pstipple_stage(svga->swtnl.draw, &svga->pipe);
  167.  
  168.    if (debug_get_bool_option("SVGA_SWTNL_FSE", FALSE))
  169.       draw_set_driver_clipping(svga->swtnl.draw, TRUE, TRUE, TRUE);
  170.  
  171.    return TRUE;
  172.  
  173. fail:
  174.    if (svga->blitter)
  175.       util_blitter_destroy(svga->blitter);
  176.  
  177.    if (svga->swtnl.backend)
  178.       svga->swtnl.backend->destroy( svga->swtnl.backend );
  179.  
  180.    if (svga->swtnl.draw)
  181.       draw_destroy( svga->swtnl.draw );
  182.  
  183.    return FALSE;
  184. }
  185.  
  186.  
  187. void svga_destroy_swtnl( struct svga_context *svga )
  188. {
  189.    draw_destroy( svga->swtnl.draw );
  190. }
  191.