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 #include "svga_cmd.h"
  27
  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_context.h"
  35 #include "svga_screen.h"
  36 #include "svga_draw.h"
  37 #include "svga_state.h"
  38 #include "svga_swtnl.h"
  39 #include "svga_debug.h"
  40
  41
  42
  43 static enum pipe_error
  44 retry_draw_range_elements( struct svga_context *svga,
  45                            struct pipe_resource *index_buffer,
  46                            unsigned index_size,
  47                            unsigned min_index,
  48                            unsigned max_index,
  49                            unsigned prim,
  50                            unsigned start,
  51                            unsigned count,
  52                            boolean do_retry )
  53 {
  54    enum pipe_error ret = 0;
  55
  56    svga_hwtnl_set_unfilled( svga->hwtnl,
  57                             svga->curr.rast->hw_unfilled );
  58
  59    svga_hwtnl_set_flatshade( svga->hwtnl,
  60                              svga->curr.rast->templ.flatshade,
  61                              svga->curr.rast->templ.flatshade_first );
  62
  63
  64    ret = svga_update_state( svga, SVGA_STATE_HW_DRAW );
  65    if (ret)
  66       goto retry;
  67
  68    ret = svga_hwtnl_draw_range_elements( svga->hwtnl,
  69                                          index_buffer, index_size,
  70                                          min_index, max_index,
  71                                          prim, start, count, 0 );
  72    if (ret)
  73       goto retry;
  74
  75    if (svga->curr.any_user_vertex_buffers) {
  76       ret = svga_hwtnl_flush( svga->hwtnl );
  77       if (ret)
  78          goto retry;
  79    }
  80
  81    return PIPE_OK;
  82
  83 retry:
  84    svga_context_flush( svga, NULL );
  85
  86    if (do_retry)
  87    {
  88       return retry_draw_range_elements( svga,
  89                                         index_buffer, index_size,
  90                                         min_index, max_index,
  91                                         prim, start, count,
  92                                         FALSE );
  93    }
  94
  95    return ret;
  96 }
  97
  98
  99 static enum pipe_error
 100 retry_draw_arrays( struct svga_context *svga,
 101                    unsigned prim,
 102                    unsigned start,
 103                    unsigned count,
 104                    boolean do_retry )
 105 {
 106    enum pipe_error ret;
 107
 108    svga_hwtnl_set_unfilled( svga->hwtnl,
 109                             svga->curr.rast->hw_unfilled );
 110
 111    svga_hwtnl_set_flatshade( svga->hwtnl,
 112                              svga->curr.rast->templ.flatshade,
 113                              svga->curr.rast->templ.flatshade_first );
 114
 115    ret = svga_update_state( svga, SVGA_STATE_HW_DRAW );
 116    if (ret)
 117       goto retry;
 118
 119    ret = svga_hwtnl_draw_arrays( svga->hwtnl, prim,
 120                                  start, count );
 121    if (ret)
 122       goto retry;
 123
 124    if (svga->curr.any_user_vertex_buffers) {
 125       ret = svga_hwtnl_flush( svga->hwtnl );
 126       if (ret)
 127          goto retry;
 128    }
 129
 130    return 0;
 131
 132 retry:
 133    if (ret == PIPE_ERROR_OUT_OF_MEMORY && do_retry)
 134    {
 135       svga_context_flush( svga, NULL );
 136
 137       return retry_draw_arrays( svga,
 138                                 prim,
 139                                 start,
 140                                 count,
 141                                 FALSE );
 142    }
 143
 144    return ret;
 145 }
 146
 147
 148
 149
 150
 151 static void
 152 svga_draw_range_elements( struct pipe_context *pipe,
 153                           struct pipe_resource *index_buffer,
 154                           unsigned index_size,
 155                           unsigned min_index,
 156                           unsigned max_index,
 157                           unsigned prim, unsigned start, unsigned count)
 158 {
 159    struct svga_context *svga = svga_context( pipe );
 160    unsigned reduced_prim = u_reduced_prim(prim);
 161    enum pipe_error ret = 0;
 162
 163    if (!u_trim_pipe_prim( prim, &count ))
 164       return;
 165
 166    /*
 167     * Mark currently bound target surfaces as dirty
 168     * doesn't really matter if it is done before drawing.
 169     *
 170     * TODO If we ever normaly return something other then
 171     * true we should not mark it as dirty then.
 172     */
 173    svga_mark_surfaces_dirty(svga_context(pipe));
 174
 175    if (svga->curr.reduced_prim != reduced_prim) {
 176       svga->curr.reduced_prim = reduced_prim;
 177       svga->dirty |= SVGA_NEW_REDUCED_PRIMITIVE;
 178    }
 179
 180    svga_update_state_retry( svga, SVGA_STATE_NEED_SWTNL );
 181
 182 #ifdef DEBUG
 183    if (svga->curr.vs->base.id == svga->debug.disable_shader ||
 184        svga->curr.fs->base.id == svga->debug.disable_shader)
 185       return;
 186 #endif
 187
 188    if (svga->state.sw.need_swtnl)
 189    {
 190       ret = svga_swtnl_draw_range_elements( svga,
 191                                             index_buffer,
 192                                             index_size,
 193                                             min_index, max_index,
 194                                             prim,
 195                                             start, count );
 196    }
 197    else {
 198       if (index_buffer) {
 199          ret = retry_draw_range_elements( svga,
 200                                           index_buffer,
 201                                           index_size,
 202                                           min_index,
 203                                           max_index,
 204                                           prim,
 205                                           start,
 206                                           count,
 207                                           TRUE );
 208       }
 209       else {
 210          ret = retry_draw_arrays( svga,
 211                                   prim,
 212                                   start,
 213                                   count,
 214                                   TRUE );
 215       }
 216    }
 217
 218    if (SVGA_DEBUG & DEBUG_FLUSH) {
 219       svga_hwtnl_flush_retry( svga );
 220       svga_context_flush(svga, NULL);
 221    }
 222 }
 223
 224
 225 static void
 226 svga_draw_elements( struct pipe_context *pipe,
 227                     struct pipe_resource *index_buffer,
 228                     unsigned index_size,
 229                     unsigned prim, unsigned start, unsigned count)
 230 {
 231    svga_draw_range_elements( pipe, index_buffer,
 232                              index_size,
 233                              0, 0xffffffff,
 234                              prim, start, count );
 235 }
 236
 237 static void
 238 svga_draw_arrays( struct pipe_context *pipe,
 239                   unsigned prim, unsigned start, unsigned count)
 240 {
 241    svga_draw_range_elements(pipe, NULL, 0,
 242                             start, start + count - 1,
 243                             prim,
 244                             start, count);
 245 }
 246
 247
 248 void svga_init_draw_functions( struct svga_context *svga )
 249 {
 250    svga->pipe.draw_arrays = svga_draw_arrays;
 251    svga->pipe.draw_elements = svga_draw_elements;
 252    svga->pipe.draw_range_elements = svga_draw_range_elements;
 253 }