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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_screen.h"
  33. #include "svga_swtnl.h"
  34. #include "svga_state.h"
  35. #include "svga_swtnl_private.h"
  36.  
  37.  
  38.  
  39. enum pipe_error
  40. svga_swtnl_draw_vbo(struct svga_context *svga,
  41.                     const struct pipe_draw_info *info)
  42. {
  43.    struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = { 0 };
  44.    struct pipe_transfer *ib_transfer = NULL;
  45.    struct pipe_transfer *cb_transfer = NULL;
  46.    struct draw_context *draw = svga->swtnl.draw;
  47.    unsigned i;
  48.    const void *map;
  49.    enum pipe_error ret;
  50.  
  51.    assert(!svga->dirty);
  52.    assert(svga->state.sw.need_swtnl);
  53.    assert(draw);
  54.  
  55.    /* Make sure that the need_swtnl flag does not go away */
  56.    svga->state.sw.in_swtnl_draw = TRUE;
  57.  
  58.    ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  59.    if (ret != PIPE_OK) {
  60.       svga_context_flush(svga, NULL);
  61.       ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  62.       svga->swtnl.new_vbuf = TRUE;
  63.       assert(ret == PIPE_OK);
  64.    }
  65.  
  66.    /*
  67.     * Map vertex buffers
  68.     */
  69.    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
  70.       if (svga->curr.vb[i].buffer) {
  71.          map = pipe_buffer_map(&svga->pipe,
  72.                                svga->curr.vb[i].buffer,
  73.                                PIPE_TRANSFER_READ,
  74.                                &vb_transfer[i]);
  75.  
  76.          draw_set_mapped_vertex_buffer(draw, i, map, ~0);
  77.       }
  78.    }
  79.  
  80.    /* Map index buffer, if present */
  81.    map = NULL;
  82.    if (info->indexed && svga->curr.ib.buffer) {
  83.       map = pipe_buffer_map(&svga->pipe, svga->curr.ib.buffer,
  84.                             PIPE_TRANSFER_READ,
  85.                             &ib_transfer);
  86.       draw_set_indexes(draw,
  87.                        (const ubyte *) map + svga->curr.ib.offset,
  88.                        svga->curr.ib.index_size, ~0);
  89.    }
  90.  
  91.    if (svga->curr.cbufs[PIPE_SHADER_VERTEX].buffer) {
  92.       map = pipe_buffer_map(&svga->pipe,
  93.                             svga->curr.cbufs[PIPE_SHADER_VERTEX].buffer,
  94.                             PIPE_TRANSFER_READ,
  95.                             &cb_transfer);
  96.       assert(map);
  97.       draw_set_mapped_constant_buffer(
  98.          draw, PIPE_SHADER_VERTEX, 0,
  99.          map,
  100.          svga->curr.cbufs[PIPE_SHADER_VERTEX].buffer->width0);
  101.    }
  102.  
  103.    draw_vbo(draw, info);
  104.  
  105.    draw_flush(svga->swtnl.draw);
  106.  
  107.    /* Ensure the draw module didn't touch this */
  108.    assert(i == svga->curr.num_vertex_buffers);
  109.    
  110.    /*
  111.     * unmap vertex/index buffers
  112.     */
  113.    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
  114.       if (svga->curr.vb[i].buffer) {
  115.          pipe_buffer_unmap(&svga->pipe, vb_transfer[i]);
  116.          draw_set_mapped_vertex_buffer(draw, i, NULL, 0);
  117.       }
  118.    }
  119.  
  120.    if (ib_transfer) {
  121.       pipe_buffer_unmap(&svga->pipe, ib_transfer);
  122.       draw_set_indexes(draw, NULL, 0, 0);
  123.    }
  124.  
  125.    if (svga->curr.cbufs[PIPE_SHADER_VERTEX].buffer) {
  126.       pipe_buffer_unmap(&svga->pipe, cb_transfer);
  127.    }
  128.  
  129.    /* Now safe to remove the need_swtnl flag in any update_state call */
  130.    svga->state.sw.in_swtnl_draw = FALSE;
  131.    svga->dirty |= SVGA_NEW_NEED_PIPELINE | SVGA_NEW_NEED_SWVFETCH;
  132.  
  133.    return ret;
  134. }
  135.  
  136.  
  137.  
  138.  
  139. boolean svga_init_swtnl( struct svga_context *svga )
  140. {
  141.    struct svga_screen *screen = svga_screen(svga->pipe.screen);
  142.  
  143.    svga->swtnl.backend = svga_vbuf_render_create(svga);
  144.    if(!svga->swtnl.backend)
  145.       goto fail;
  146.  
  147.    /*
  148.     * Create drawing context and plug our rendering stage into it.
  149.     */
  150.    svga->swtnl.draw = draw_create(&svga->pipe);
  151.    if (svga->swtnl.draw == NULL)
  152.       goto fail;
  153.  
  154.  
  155.    draw_set_rasterize_stage(svga->swtnl.draw,
  156.                             draw_vbuf_stage( svga->swtnl.draw, svga->swtnl.backend ));
  157.  
  158.    draw_set_render(svga->swtnl.draw, svga->swtnl.backend);
  159.  
  160.    svga->blitter = util_blitter_create(&svga->pipe);
  161.    if (!svga->blitter)
  162.       goto fail;
  163.  
  164.    /* must be done before installing Draw stages */
  165.    util_blitter_cache_all_shaders(svga->blitter);
  166.  
  167.    if (!screen->haveLineSmooth)
  168.       draw_install_aaline_stage(svga->swtnl.draw, &svga->pipe);
  169.  
  170.    /* always install polygon stipple stage */
  171.    draw_install_pstipple_stage(svga->swtnl.draw, &svga->pipe);
  172.  
  173.    /* enable/disable line stipple stage depending on device caps */
  174.    draw_enable_line_stipple(svga->swtnl.draw, !screen->haveLineStipple);
  175.  
  176.    /* always install AA point stage */
  177.    draw_install_aapoint_stage(svga->swtnl.draw, &svga->pipe);
  178.  
  179.    /* Set wide line threshold above device limit (so we'll never really use it)
  180.     */
  181.    draw_wide_line_threshold(svga->swtnl.draw,
  182.                             MAX2(screen->maxLineWidth,
  183.                                  screen->maxLineWidthAA));
  184.  
  185.    if (debug_get_bool_option("SVGA_SWTNL_FSE", FALSE))
  186.       draw_set_driver_clipping(svga->swtnl.draw, TRUE, TRUE, TRUE, FALSE);
  187.  
  188.    return TRUE;
  189.  
  190. fail:
  191.    if (svga->blitter)
  192.       util_blitter_destroy(svga->blitter);
  193.  
  194.    if (svga->swtnl.backend)
  195.       svga->swtnl.backend->destroy( svga->swtnl.backend );
  196.  
  197.    if (svga->swtnl.draw)
  198.       draw_destroy( svga->swtnl.draw );
  199.  
  200.    return FALSE;
  201. }
  202.  
  203.  
  204. void svga_destroy_swtnl( struct svga_context *svga )
  205. {
  206.    draw_destroy( svga->swtnl.draw );
  207. }
  208.