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_range_elements(struct svga_context *svga,
  40                                struct pipe_resource *indexBuffer,
  41                                unsigned indexSize,
  42                                int indexBias,
  43                                unsigned min_index,
  44                                unsigned max_index,
  45                                unsigned prim, unsigned start, unsigned count)
  46 {
  47    struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS];
  48    struct pipe_transfer *ib_transfer = NULL;
  49    struct pipe_transfer *cb_transfer = NULL;
  50    struct draw_context *draw = svga->swtnl.draw;
  51    unsigned i;
  52    const void *map;
  53    enum pipe_error ret;
  54
  55    assert(!svga->dirty);
  56    assert(svga->state.sw.need_swtnl);
  57    assert(draw);
  58
  59    ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  60    if (ret) {
  61       svga_context_flush(svga, NULL);
  62       ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  63       svga->swtnl.new_vbuf = TRUE;
  64       assert(ret == PIPE_OK);
  65    }
  66
  67    /*
  68     * Map vertex buffers
  69     */
  70    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
  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);
  77    }
  78
  79    /* Map index buffer, if present */
  80    if (indexBuffer) {
  81       map = pipe_buffer_map(&svga->pipe, indexBuffer,
  82                             PIPE_TRANSFER_READ,
  83                             &ib_transfer);
  84
  85       draw_set_mapped_element_buffer_range(draw,
  86                                            indexSize, indexBias,
  87                                            min_index,
  88                                            max_index,
  89                                            map);
  90    }
  91
  92    if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
  93       map = pipe_buffer_map(&svga->pipe,
  94                             svga->curr.cb[PIPE_SHADER_VERTEX],
  95                             PIPE_TRANSFER_READ,
  96                             &cb_transfer);
  97       assert(map);
  98       draw_set_mapped_constant_buffer(
  99          draw, PIPE_SHADER_VERTEX, 0,
 100          map,
 101          svga->curr.cb[PIPE_SHADER_VERTEX]->width0);
 102    }
 103
 104    draw_arrays(svga->swtnl.draw, prim, start, count);
 105
 106    draw_flush(svga->swtnl.draw);
 107
 108    /* Ensure the draw module didn't touch this */
 109    assert(i == svga->curr.num_vertex_buffers);
 110
 111    /*
 112     * unmap vertex/index buffers
 113     */
 114    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
 115       pipe_buffer_unmap(&svga->pipe, svga->curr.vb[i].buffer,
 116                         vb_transfer[i]);
 117       draw_set_mapped_vertex_buffer(draw, i, NULL);
 118    }
 119
 120    if (indexBuffer) {
 121       pipe_buffer_unmap(&svga->pipe, indexBuffer, ib_transfer);
 122       draw_set_mapped_element_buffer(draw, 0, 0, NULL);
 123    }
 124
 125    if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
 126       pipe_buffer_unmap(&svga->pipe,
 127                         svga->curr.cb[PIPE_SHADER_VERTEX],
 128                         cb_transfer);
 129    }
 130
 131    return ret;
 132 }
 133
 134
 135
 136
 137 boolean svga_init_swtnl( struct svga_context *svga )
 138 {
 139    svga->swtnl.backend = svga_vbuf_render_create(svga);
 140    if(!svga->swtnl.backend)
 141       goto fail;
 142
 143    /*
 144     * Create drawing context and plug our rendering stage into it.
 145     */
 146    svga->swtnl.draw = draw_create(&svga->pipe);
 147    if (svga->swtnl.draw == NULL)
 148       goto fail;
 149
 150
 151    draw_set_rasterize_stage(svga->swtnl.draw,
 152                             draw_vbuf_stage( svga->swtnl.draw, svga->swtnl.backend ));
 153
 154    draw_set_render(svga->swtnl.draw, svga->swtnl.backend);
 155
 156    draw_install_aaline_stage(svga->swtnl.draw, &svga->pipe);
 157    draw_install_aapoint_stage(svga->swtnl.draw, &svga->pipe);
 158    draw_install_pstipple_stage(svga->swtnl.draw, &svga->pipe);
 159
 160    draw_set_driver_clipping(svga->swtnl.draw, debug_get_bool_option("SVGA_SWTNL_FSE", FALSE));
 161
 162    return TRUE;
 163
 164 fail:
 165    if (svga->swtnl.backend)
 166       svga->swtnl.backend->destroy( svga->swtnl.backend );
 167
 168    if (svga->swtnl.draw)
 169       draw_destroy( svga->swtnl.draw );
 170
 171    return FALSE;
 172 }
 173
 174
 175 void svga_destroy_swtnl( struct svga_context *svga )
 176 {
 177    draw_destroy( svga->swtnl.draw );
 178 }