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 {
  43    struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = { 0 };
  44    struct pipe_transfer *ib_transfer = NULL;
  45    struct pipe_transfer *cb_transfer[SVGA_MAX_CONST_BUFS] = { 0 };
  46    struct draw_context *draw = svga->swtnl.draw;
  47    ASSERTED unsigned old_num_vertex_buffers;
  48    unsigned i;
  49    const void *map;
  50    enum pipe_error ret;
  51
  52    SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_SWTNLDRAWVBO);
  53
  54    assert(!svga->dirty);
  55    assert(svga->state.sw.need_swtnl);
  56    assert(draw);
  57
  58    /* Make sure that the need_swtnl flag does not go away */
  59    svga->state.sw.in_swtnl_draw = TRUE;
  60
  61    ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  62    if (ret != PIPE_OK) {
  63       svga_context_flush(svga, NULL);
  64       ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
  65       svga->swtnl.new_vbuf = TRUE;
  66       assert(ret == PIPE_OK);
  67    }
  68
  69    /*
  70     * Map vertex buffers
  71     */
  72    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
  73       if (svga->curr.vb[i].buffer.resource) {
  74          map = pipe_buffer_map(&svga->pipe,
  75                                svga->curr.vb[i].buffer.resource,
  76                                PIPE_TRANSFER_READ |
  77                                PIPE_TRANSFER_UNSYNCHRONIZED,
  78                                &vb_transfer[i]);
  79
  80          draw_set_mapped_vertex_buffer(draw, i, map, ~0);
  81       }
  82    }
  83    old_num_vertex_buffers = svga->curr.num_vertex_buffers;
  84
  85    /* Map index buffer, if present */
  86    map = NULL;
  87    if (info->index_size) {
  88       if (info->has_user_indices) {
  89          map = (ubyte *) info->index.user;
  90       } else {
  91          map = pipe_buffer_map(&svga->pipe, info->index.resource,
  92                                PIPE_TRANSFER_READ |
  93                                PIPE_TRANSFER_UNSYNCHRONIZED, &ib_transfer);
  94       }
  95       draw_set_indexes(draw,
  96                        (const ubyte *) map,
  97                        info->index_size, ~0);
  98    }
  99
 100    /* Map constant buffers */
 101    for (i = 0; i < ARRAY_SIZE(svga->curr.constbufs[PIPE_SHADER_VERTEX]); ++i) {
 102       if (svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer == NULL) {
 103          continue;
 104       }
 105
 106       map = pipe_buffer_map(&svga->pipe,
 107                             svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer,
 108                             PIPE_TRANSFER_READ |
 109                             PIPE_TRANSFER_UNSYNCHRONIZED,
 110                             &cb_transfer[i]);
 111       assert(map);
 112       draw_set_mapped_constant_buffer(
 113          draw, PIPE_SHADER_VERTEX, i,
 114          map,
 115          svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer->width0);
 116    }
 117
 118    draw_vbo(draw, info);
 119
 120    draw_flush(svga->swtnl.draw);
 121
 122    /* Ensure the draw module didn't touch this */
 123    assert(old_num_vertex_buffers == svga->curr.num_vertex_buffers);
 124
 125    /*
 126     * unmap vertex/index buffers
 127     */
 128    for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
 129       if (svga->curr.vb[i].buffer.resource) {
 130          pipe_buffer_unmap(&svga->pipe, vb_transfer[i]);
 131          draw_set_mapped_vertex_buffer(draw, i, NULL, 0);
 132       }
 133    }
 134
 135    if (ib_transfer) {
 136       pipe_buffer_unmap(&svga->pipe, ib_transfer);
 137       draw_set_indexes(draw, NULL, 0, 0);
 138    }
 139
 140    for (i = 0; i < ARRAY_SIZE(svga->curr.constbufs[PIPE_SHADER_VERTEX]); ++i) {
 141       if (svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer) {
 142          pipe_buffer_unmap(&svga->pipe, cb_transfer[i]);
 143       }
 144    }
 145
 146    /* Now safe to remove the need_swtnl flag in any update_state call */
 147    svga->state.sw.in_swtnl_draw = FALSE;
 148    svga->dirty |= SVGA_NEW_NEED_PIPELINE | SVGA_NEW_NEED_SWVFETCH;
 149
 150    SVGA_STATS_TIME_POP(svga_sws(svga));
 151    return ret;
 152 }
 153
 154
 155 boolean
 156 svga_init_swtnl(struct svga_context *svga)
 157 {
 158    struct svga_screen *screen = svga_screen(svga->pipe.screen);
 159
 160    svga->swtnl.backend = svga_vbuf_render_create(svga);
 161    if (!svga->swtnl.backend)
 162       goto fail;
 163
 164    /*
 165     * Create drawing context and plug our rendering stage into it.
 166     */
 167    svga->swtnl.draw = draw_create(&svga->pipe);
 168    if (svga->swtnl.draw == NULL)
 169       goto fail;
 170
 171
 172    draw_set_rasterize_stage(svga->swtnl.draw,
 173                  draw_vbuf_stage(svga->swtnl.draw, svga->swtnl.backend));
 174
 175    draw_set_render(svga->swtnl.draw, svga->swtnl.backend);
 176
 177    svga->blitter = util_blitter_create(&svga->pipe);
 178    if (!svga->blitter)
 179       goto fail;
 180
 181    /* must be done before installing Draw stages */
 182    util_blitter_cache_all_shaders(svga->blitter);
 183
 184    if (!screen->haveLineSmooth)
 185       draw_install_aaline_stage(svga->swtnl.draw, &svga->pipe);
 186
 187    /* enable/disable line stipple stage depending on device caps */
 188    draw_enable_line_stipple(svga->swtnl.draw, !screen->haveLineStipple);
 189
 190    /* always install AA point stage */
 191    draw_install_aapoint_stage(svga->swtnl.draw, &svga->pipe);
 192
 193    /* Set wide line threshold above device limit (so we'll never really use it)
 194     */
 195    draw_wide_line_threshold(svga->swtnl.draw,
 196                             MAX2(screen->maxLineWidth,
 197                                  screen->maxLineWidthAA));
 198
 199    if (debug_get_bool_option("SVGA_SWTNL_FSE", FALSE))
 200       draw_set_driver_clipping(svga->swtnl.draw, TRUE, TRUE, TRUE, FALSE);
 201
 202    return TRUE;
 203
 204 fail:
 205    if (svga->blitter)
 206       util_blitter_destroy(svga->blitter);
 207
 208    if (svga->swtnl.backend)
 209       svga->swtnl.backend->destroy(svga->swtnl.backend);
 210
 211    if (svga->swtnl.draw)
 212       draw_destroy(svga->swtnl.draw);
 213
 214    return FALSE;
 215 }
 216
 217
 218 void
 219 svga_destroy_swtnl(struct svga_context *svga)
 220 {
 221    draw_destroy(svga->swtnl.draw);
 222 }