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    /* TODO move this to update_swtnl_draw */
  75    draw_set_index_buffer(draw, &svga->curr.ib);
  76
  77    /* Map index buffer, if present */
  78    map = NULL;
  79    if (info->indexed && svga->curr.ib.buffer) {
  80       map = pipe_buffer_map(&svga->pipe, svga->curr.ib.buffer,
  81                             PIPE_TRANSFER_READ,
  82                             &ib_transfer);
  83    }
  84    draw_set_mapped_index_buffer(draw, map);
  85
  86    if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
  87       map = pipe_buffer_map(&svga->pipe,
  88                             svga->curr.cb[PIPE_SHADER_VERTEX],
  89                             PIPE_TRANSFER_READ,
  90                             &cb_transfer);
  91       assert(map);
  92       draw_set_mapped_constant_buffer(
  93          draw, PIPE_SHADER_VERTEX, 0,
  94          map,
  95          svga->curr.cb[PIPE_SHADER_VERTEX]->width0);
  96    }
  97
  98    draw_vbo(draw, info);
  99
 100    draw_flush(svga->swtnl.draw);
 101
 102    /* Ensure the draw module didn't touch this */
 103    assert(i == svga->curr.num_vertex_buffers);
 104
 105    /*
 106     * unmap vertex/index buffers
 107     */
 108    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
 109       pipe_buffer_unmap(&svga->pipe, vb_transfer[i]);
 110       draw_set_mapped_vertex_buffer(draw, i, NULL);
 111    }
 112
 113    if (ib_transfer) {
 114       pipe_buffer_unmap(&svga->pipe, ib_transfer);
 115       draw_set_mapped_index_buffer(draw, NULL);
 116    }
 117
 118    if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
 119       pipe_buffer_unmap(&svga->pipe, cb_transfer);
 120    }
 121
 122    return ret;
 123 }
 124
 125
 126
 127
 128 boolean svga_init_swtnl( struct svga_context *svga )
 129 {
 130    svga->swtnl.backend = svga_vbuf_render_create(svga);
 131    if(!svga->swtnl.backend)
 132       goto fail;
 133
 134    /*
 135     * Create drawing context and plug our rendering stage into it.
 136     */
 137    svga->swtnl.draw = draw_create(&svga->pipe);
 138    if (svga->swtnl.draw == NULL)
 139       goto fail;
 140
 141
 142    draw_set_rasterize_stage(svga->swtnl.draw,
 143                             draw_vbuf_stage( svga->swtnl.draw, svga->swtnl.backend ));
 144
 145    draw_set_render(svga->swtnl.draw, svga->swtnl.backend);
 146
 147    draw_install_aaline_stage(svga->swtnl.draw, &svga->pipe);
 148    draw_install_aapoint_stage(svga->swtnl.draw, &svga->pipe);
 149    draw_install_pstipple_stage(svga->swtnl.draw, &svga->pipe);
 150
 151    if (debug_get_bool_option("SVGA_SWTNL_FSE", FALSE))
 152       draw_set_driver_clipping(svga->swtnl.draw, TRUE, TRUE);
 153
 154    return TRUE;
 155
 156 fail:
 157    if (svga->swtnl.backend)
 158       svga->swtnl.backend->destroy( svga->swtnl.backend );
 159
 160    if (svga->swtnl.draw)
 161       draw_destroy( svga->swtnl.draw );
 162
 163    return FALSE;
 164 }
 165
 166
 167 void svga_destroy_swtnl( struct svga_context *svga )
 168 {
 169    draw_destroy( svga->swtnl.draw );
 170 }