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] = { 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);
  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);
  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);
 116       }
 117    }
 118
 119    if (ib_transfer) {
 120       pipe_buffer_unmap(&svga->pipe, ib_transfer);
 121       draw_set_indexes(draw, NULL, 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 }