src/gallium/drivers/svga/svga_pipe_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
  27 #include "util/u_format.h"
  28 #include "util/u_inlines.h"
  29 #include "util/u_prim.h"
  30 #include "util/u_time.h"
  31 #include "indices/u_indices.h"
  32
  33 #include "svga_hw_reg.h"
  34 #include "svga_cmd.h"
  35 #include "svga_context.h"
  36 #include "svga_screen.h"
  37 #include "svga_draw.h"
  38 #include "svga_state.h"
  39 #include "svga_swtnl.h"
  40 #include "svga_debug.h"
  41 #include "svga_resource_buffer.h"
  42
  43
  44 static enum pipe_error
  45 retry_draw_range_elements( struct svga_context *svga,
  46                            struct pipe_resource *index_buffer,
  47                            unsigned index_size,
  48                            int index_bias,
  49                            unsigned min_index,
  50                            unsigned max_index,
  51                            unsigned prim,
  52                            unsigned start,
  53                            unsigned count,
  54                            unsigned instance_count,
  55                            boolean do_retry )
  56 {
  57    enum pipe_error ret = PIPE_OK;
  58
  59    svga_hwtnl_set_unfilled( svga->hwtnl,
  60                             svga->curr.rast->hw_unfilled );
  61
  62    svga_hwtnl_set_flatshade( svga->hwtnl,
  63                              svga->curr.rast->templ.flatshade,
  64                              svga->curr.rast->templ.flatshade_first );
  65
  66    ret = svga_update_state( svga, SVGA_STATE_HW_DRAW );
  67    if (ret != PIPE_OK)
  68       goto retry;
  69
  70    ret = svga_hwtnl_draw_range_elements( svga->hwtnl,
  71                                          index_buffer, index_size, index_bias,
  72                                          min_index, max_index,
  73                                          prim, start, count );
  74    if (ret != PIPE_OK)
  75       goto retry;
  76
  77    return PIPE_OK;
  78
  79 retry:
  80    svga_context_flush( svga, NULL );
  81
  82    if (do_retry)
  83    {
  84       return retry_draw_range_elements( svga,
  85                                         index_buffer, index_size, index_bias,
  86                                         min_index, max_index,
  87                                         prim, start, count,
  88                                         instance_count, FALSE );
  89    }
  90
  91    return ret;
  92 }
  93
  94
  95 static enum pipe_error
  96 retry_draw_arrays( struct svga_context *svga,
  97                    unsigned prim,
  98                    unsigned start,
  99                    unsigned count,
 100                    unsigned instance_count,
 101                    boolean do_retry )
 102 {
 103    enum pipe_error ret;
 104
 105    svga_hwtnl_set_unfilled( svga->hwtnl,
 106                             svga->curr.rast->hw_unfilled );
 107
 108    svga_hwtnl_set_flatshade( svga->hwtnl,
 109                              svga->curr.rast->templ.flatshade,
 110                              svga->curr.rast->templ.flatshade_first );
 111
 112    ret = svga_update_state( svga, SVGA_STATE_HW_DRAW );
 113    if (ret != PIPE_OK)
 114       goto retry;
 115
 116    ret = svga_hwtnl_draw_arrays( svga->hwtnl, prim,
 117                                  start, count );
 118    if (ret != PIPE_OK)
 119       goto retry;
 120
 121    return PIPE_OK;
 122
 123 retry:
 124    if (ret == PIPE_ERROR_OUT_OF_MEMORY && do_retry)
 125    {
 126       svga_context_flush( svga, NULL );
 127
 128       return retry_draw_arrays( svga,
 129                                 prim,
 130                                 start,
 131                                 count,
 132                                 instance_count,
 133                                 FALSE );
 134    }
 135
 136    return ret;
 137 }
 138
 139
 140 static void
 141 svga_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
 142 {
 143    struct svga_context *svga = svga_context( pipe );
 144    unsigned reduced_prim = u_reduced_prim( info->mode );
 145    unsigned count = info->count;
 146    enum pipe_error ret = 0;
 147    boolean needed_swtnl;
 148
 149    svga->num_draw_calls++;  /* for SVGA_QUERY_DRAW_CALLS */
 150
 151    if (!u_trim_pipe_prim( info->mode, &count ))
 152       return;
 153
 154    /*
 155     * Mark currently bound target surfaces as dirty
 156     * doesn't really matter if it is done before drawing.
 157     *
 158     * TODO If we ever normaly return something other then
 159     * true we should not mark it as dirty then.
 160     */
 161    svga_mark_surfaces_dirty(svga_context(pipe));
 162
 163    if (svga->curr.reduced_prim != reduced_prim) {
 164       svga->curr.reduced_prim = reduced_prim;
 165       svga->dirty |= SVGA_NEW_REDUCED_PRIMITIVE;
 166    }
 167
 168    needed_swtnl = svga->state.sw.need_swtnl;
 169
 170    svga_update_state_retry( svga, SVGA_STATE_NEED_SWTNL );
 171
 172 #ifdef DEBUG
 173    if (svga->curr.vs->base.id == svga->debug.disable_shader ||
 174        svga->curr.fs->base.id == svga->debug.disable_shader)
 175       return;
 176 #endif
 177
 178    if (svga->state.sw.need_swtnl) {
 179       svga->num_fallbacks++;  /* for SVGA_QUERY_FALLBACKS */
 180       if (!needed_swtnl) {
 181          /*
 182           * We're switching from HW to SW TNL.  SW TNL will require mapping all
 183           * currently bound vertex buffers, some of which may already be
 184           * referenced in the current command buffer as result of previous HW
 185           * TNL. So flush now, to prevent the context to flush while a referred
 186           * vertex buffer is mapped.
 187           */
 188
 189          svga_context_flush(svga, NULL);
 190       }
 191
 192       /* Avoid leaking the previous hwtnl bias to swtnl */
 193       svga_hwtnl_set_index_bias( svga->hwtnl, 0 );
 194       ret = svga_swtnl_draw_vbo( svga, info );
 195    }
 196    else {
 197       if (info->indexed && svga->curr.ib.buffer) {
 198          unsigned offset;
 199
 200          assert(svga->curr.ib.offset % svga->curr.ib.index_size == 0);
 201          offset = svga->curr.ib.offset / svga->curr.ib.index_size;
 202
 203          ret = retry_draw_range_elements( svga,
 204                                           svga->curr.ib.buffer,
 205                                           svga->curr.ib.index_size,
 206                                           info->index_bias,
 207                                           info->min_index,
 208                                           info->max_index,
 209                                           info->mode,
 210                                           info->start + offset,
 211                                           info->count,
 212                                           info->instance_count,
 213                                           TRUE );
 214       }
 215       else {
 216          ret = retry_draw_arrays( svga,
 217                                   info->mode,
 218                                   info->start,
 219                                   info->count,
 220                                   info->instance_count,
 221                                   TRUE );
 222       }
 223    }
 224
 225    /* XXX: Silence warnings, do something sensible here? */
 226    (void)ret;
 227
 228    if (SVGA_DEBUG & DEBUG_FLUSH) {
 229       svga_hwtnl_flush_retry( svga );
 230       svga_context_flush(svga, NULL);
 231    }
 232 }
 233
 234
 235 void svga_init_draw_functions( struct svga_context *svga )
 236 {
 237    svga->pipe.draw_vbo = svga_draw_vbo;
 238 }