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