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_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                     struct pipe_resource *indexbuf,
  43                     unsigned index_offset)
  44 {
  45    struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = { 0 };
  46    struct pipe_transfer *ib_transfer = NULL;
  47    struct pipe_transfer *cb_transfer[SVGA_MAX_CONST_BUFS] = { 0 };
  48    struct draw_context *draw = svga->swtnl.draw;
  49    MAYBE_UNUSED unsigned old_num_vertex_buffers;
  50    unsigned i;
  51    const void *map;
  52    enum pipe_error ret;
  53
  54    SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_SWTNLDRAWVBO);
  55
  56    assert(!svga->dirty);
  57    assert(svga->state.sw.need_swtnl);
  58    assert(draw);
  59
  60    /* Make sure that the need_swtnl flag does not go away */
  61    svga->state.sw.in_swtnl_draw = TRUE;
  62
  63    ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  64    if (ret != PIPE_OK) {
  65       svga_context_flush(svga, NULL);
  66       ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  67       svga->swtnl.new_vbuf = TRUE;
  68       assert(ret == PIPE_OK);
  69    }
  70
  71    /*
  72     * Map vertex buffers
  73     */
  74    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
  75       if (svga->curr.vb[i].buffer.resource) {
  76          map = pipe_buffer_map(&svga->pipe,
  77                                svga->curr.vb[i].buffer.resource,
  78                                PIPE_TRANSFER_READ,
  79                                &vb_transfer[i]);
  80
  81          draw_set_mapped_vertex_buffer(draw, i, map, ~0);
  82       }
  83    }
  84    old_num_vertex_buffers = svga->curr.num_vertex_buffers;
  85
  86    /* Map index buffer, if present */
  87    map = NULL;
  88    if (info->index_size && indexbuf) {
  89       map = pipe_buffer_map(&svga->pipe, indexbuf,
  90                             PIPE_TRANSFER_READ,
  91                             &ib_transfer);
  92       map = (ubyte *) map + index_offset;
  93       draw_set_indexes(draw,
  94                        (const ubyte *) map,
  95                        info->index_size, ~0);
  96    }
  97
  98    /* Map constant buffers */
  99    for (i = 0; i < ARRAY_SIZE(svga->curr.constbufs[PIPE_SHADER_VERTEX]); ++i) {
 100       if (svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer == NULL) {
 101          continue;
 102       }
 103
 104       map = pipe_buffer_map(&svga->pipe,
 105                             svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer,
 106                             PIPE_TRANSFER_READ,
 107                             &cb_transfer[i]);
 108       assert(map);
 109       draw_set_mapped_constant_buffer(
 110          draw, PIPE_SHADER_VERTEX, i,
 111          map,
 112          svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer->width0);
 113    }
 114
 115    draw_vbo(draw, info);
 116
 117    draw_flush(svga->swtnl.draw);
 118
 119    /* Ensure the draw module didn't touch this */
 120    assert(old_num_vertex_buffers == svga->curr.num_vertex_buffers);
 121
 122    /*
 123     * unmap vertex/index buffers
 124     */
 125    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
 126       if (svga->curr.vb[i].buffer.resource) {
 127          pipe_buffer_unmap(&svga->pipe, vb_transfer[i]);
 128          draw_set_mapped_vertex_buffer(draw, i, NULL, 0);
 129       }
 130    }
 131
 132    if (ib_transfer) {
 133       pipe_buffer_unmap(&svga->pipe, ib_transfer);
 134       draw_set_indexes(draw, NULL, 0, 0);
 135    }
 136
 137    for (i = 0; i < ARRAY_SIZE(svga->curr.constbufs[PIPE_SHADER_VERTEX]); ++i) {
 138       if (svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer) {
 139          pipe_buffer_unmap(&svga->pipe, cb_transfer[i]);
 140       }
 141    }
 142
 143    /* Now safe to remove the need_swtnl flag in any update_state call */
 144    svga->state.sw.in_swtnl_draw = FALSE;
 145    svga->dirty |= SVGA_NEW_NEED_PIPELINE | SVGA_NEW_NEED_SWVFETCH;
 146
 147    SVGA_STATS_TIME_POP(svga_sws(svga));
 148    return ret;
 149 }
 150
 151
 152 boolean
 153 svga_init_swtnl(struct svga_context *svga)
 154 {
 155    struct svga_screen *screen = svga_screen(svga->pipe.screen);
 156
 157    svga->swtnl.backend = svga_vbuf_render_create(svga);
 158    if(!svga->swtnl.backend)
 159       goto fail;
 160
 161    /*
 162     * Create drawing context and plug our rendering stage into it.
 163     */
 164    svga->swtnl.draw = draw_create(&svga->pipe);
 165    if (svga->swtnl.draw == NULL)
 166       goto fail;
 167
 168
 169    draw_set_rasterize_stage(svga->swtnl.draw,
 170                  draw_vbuf_stage(svga->swtnl.draw, svga->swtnl.backend));
 171
 172    draw_set_render(svga->swtnl.draw, svga->swtnl.backend);
 173
 174    svga->blitter = util_blitter_create(&svga->pipe);
 175    if (!svga->blitter)
 176       goto fail;
 177
 178    /* must be done before installing Draw stages */
 179    util_blitter_cache_all_shaders(svga->blitter);
 180
 181    if (!screen->haveLineSmooth)
 182       draw_install_aaline_stage(svga->swtnl.draw, &svga->pipe);
 183
 184    /* enable/disable line stipple stage depending on device caps */
 185    draw_enable_line_stipple(svga->swtnl.draw, !screen->haveLineStipple);
 186
 187    /* always install AA point stage */
 188    draw_install_aapoint_stage(svga->swtnl.draw, &svga->pipe);
 189
 190    /* Set wide line threshold above device limit (so we'll never really use it)
 191     */
 192    draw_wide_line_threshold(svga->swtnl.draw,
 193                             MAX2(screen->maxLineWidth,
 194                                  screen->maxLineWidthAA));
 195
 196    if (debug_get_bool_option("SVGA_SWTNL_FSE", FALSE))
 197       draw_set_driver_clipping(svga->swtnl.draw, TRUE, TRUE, TRUE, FALSE);
 198
 199    return TRUE;
 200
 201 fail:
 202    if (svga->blitter)
 203       util_blitter_destroy(svga->blitter);
 204
 205    if (svga->swtnl.backend)
 206       svga->swtnl.backend->destroy(svga->swtnl.backend);
 207
 208    if (svga->swtnl.draw)
 209       draw_destroy(svga->swtnl.draw);
 210
 211    return FALSE;
 212 }
 213
 214
 215 void
 216 svga_destroy_swtnl(struct svga_context *svga)
 217 {
 218    draw_destroy(svga->swtnl.draw);
 219 }