src/gallium/drivers/svga/svga_swtnl_draw.c

   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];
  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    ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  55    if (ret) {
  56       svga_context_flush(svga, NULL);
  57       ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  58       svga->swtnl.new_vbuf = TRUE;
  59       assert(ret == PIPE_OK);
  60    }
  61
  62    /*
  63     * Map vertex buffers
  64     */
  65    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
  66       map = pipe_buffer_map(&svga->pipe,
  67                             svga->curr.vb[i].buffer,
  68                             PIPE_TRANSFER_READ,
  69                             &vb_transfer[i]);
  70
  71       draw_set_mapped_vertex_buffer(draw, i, map);
  72    }
  73
  74    /* Map index buffer, if present */
  75    map = NULL;
  76    if (info->indexed && svga->curr.ib.buffer) {
  77       map = pipe_buffer_map(&svga->pipe, svga->curr.ib.buffer,
  78                             PIPE_TRANSFER_READ,
  79                             &ib_transfer);
  80       if (map)
  81          map = (const void *) ((const char *) map + svga->curr.ib.offset);
  82    }
  83
  84    draw_set_mapped_element_buffer_range(draw, (map) ?
  85                                         svga->curr.ib.index_size : 0,
  86                                         info->index_bias,
  87                                         info->min_index,
  88                                         info->max_index,
  89                                         map);
  90
  91    if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
  92       map = pipe_buffer_map(&svga->pipe,
  93                             svga->curr.cb[PIPE_SHADER_VERTEX],
  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.cb[PIPE_SHADER_VERTEX]->width0);
 101    }
 102
 103    draw_arrays(draw, info->mode, info->start, info->count);
 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       pipe_buffer_unmap(&svga->pipe, svga->curr.vb[i].buffer,
 115                         vb_transfer[i]);
 116       draw_set_mapped_vertex_buffer(draw, i, NULL);
 117    }
 118
 119    if (ib_transfer) {
 120       pipe_buffer_unmap(&svga->pipe, svga->curr.ib.buffer, ib_transfer);
 121       draw_set_mapped_element_buffer(draw, 0, 0, NULL);
 122    }
 123
 124    if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
 125       pipe_buffer_unmap(&svga->pipe,
 126                         svga->curr.cb[PIPE_SHADER_VERTEX],
 127                         cb_transfer);
 128    }
 129
 130    return ret;
 131 }
 132
 133
 134
 135
 136 boolean svga_init_swtnl( struct svga_context *svga )
 137 {
 138    svga->swtnl.backend = svga_vbuf_render_create(svga);
 139    if(!svga->swtnl.backend)
 140       goto fail;
 141
 142    /*
 143     * Create drawing context and plug our rendering stage into it.
 144     */
 145    svga->swtnl.draw = draw_create(&svga->pipe);
 146    if (svga->swtnl.draw == NULL)
 147       goto fail;
 148
 149
 150    draw_set_rasterize_stage(svga->swtnl.draw,
 151                             draw_vbuf_stage( svga->swtnl.draw, svga->swtnl.backend ));
 152
 153    draw_set_render(svga->swtnl.draw, svga->swtnl.backend);
 154
 155    draw_install_aaline_stage(svga->swtnl.draw, &svga->pipe);
 156    draw_install_aapoint_stage(svga->swtnl.draw, &svga->pipe);
 157    draw_install_pstipple_stage(svga->swtnl.draw, &svga->pipe);
 158
 159    draw_set_driver_clipping(svga->swtnl.draw, debug_get_bool_option("SVGA_SWTNL_FSE", FALSE));
 160
 161    return TRUE;
 162
 163 fail:
 164    if (svga->swtnl.backend)
 165       svga->swtnl.backend->destroy( svga->swtnl.backend );
 166
 167    if (svga->swtnl.draw)
 168       draw_destroy( svga->swtnl.draw );
 169
 170    return FALSE;
 171 }
 172
 173
 174 void svga_destroy_swtnl( struct svga_context *svga )
 175 {
 176    draw_destroy( svga->swtnl.draw );
 177 }