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                            int index_bias,
  48                            unsigned min_index,
  49                            unsigned max_index,
  50                            unsigned prim,
  51                            unsigned start,
  52                            unsigned count,
  53                            boolean do_retry )
  54 {
  55    enum pipe_error ret = 0;
  56
  57    svga_hwtnl_set_unfilled( svga->hwtnl,
  58                             svga->curr.rast->hw_unfilled );
  59
  60    svga_hwtnl_set_flatshade( svga->hwtnl,
  61                              svga->curr.rast->templ.flatshade,
  62                              svga->curr.rast->templ.flatshade_first );
  63
  64
  65    ret = svga_update_state( svga, SVGA_STATE_HW_DRAW );
  66    if (ret)
  67       goto retry;
  68
  69    ret = svga_hwtnl_draw_range_elements( svga->hwtnl,
  70                                          index_buffer, index_size, index_bias,
  71                                          min_index, max_index,
  72                                          prim, start, count );
  73    if (ret)
  74       goto retry;
  75
  76    if (svga->curr.any_user_vertex_buffers) {
  77       ret = svga_hwtnl_flush( svga->hwtnl );
  78       if (ret)
  79          goto retry;
  80    }
  81
  82    return PIPE_OK;
  83
  84 retry:
  85    svga_context_flush( svga, NULL );
  86
  87    if (do_retry)
  88    {
  89       return retry_draw_range_elements( svga,
  90                                         index_buffer, index_size, index_bias,
  91                                         min_index, max_index,
  92                                         prim, start, count,
  93                                         FALSE );
  94    }
  95
  96    return ret;
  97 }
  98
  99
 100 static enum pipe_error
 101 retry_draw_arrays( struct svga_context *svga,
 102                    unsigned prim,
 103                    unsigned start,
 104                    unsigned count,
 105                    boolean do_retry )
 106 {
 107    enum pipe_error ret;
 108
 109    svga_hwtnl_set_unfilled( svga->hwtnl,
 110                             svga->curr.rast->hw_unfilled );
 111
 112    svga_hwtnl_set_flatshade( svga->hwtnl,
 113                              svga->curr.rast->templ.flatshade,
 114                              svga->curr.rast->templ.flatshade_first );
 115
 116    ret = svga_update_state( svga, SVGA_STATE_HW_DRAW );
 117    if (ret)
 118       goto retry;
 119
 120    ret = svga_hwtnl_draw_arrays( svga->hwtnl, prim,
 121                                  start, count );
 122    if (ret)
 123       goto retry;
 124
 125    if (svga->curr.any_user_vertex_buffers) {
 126       ret = svga_hwtnl_flush( svga->hwtnl );
 127       if (ret)
 128          goto retry;
 129    }
 130
 131    return 0;
 132
 133 retry:
 134    if (ret == PIPE_ERROR_OUT_OF_MEMORY && do_retry)
 135    {
 136       svga_context_flush( svga, NULL );
 137
 138       return retry_draw_arrays( svga,
 139                                 prim,
 140                                 start,
 141                                 count,
 142                                 FALSE );
 143    }
 144
 145    return ret;
 146 }
 147
 148
 149 static void
 150 svga_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
 151 {
 152    struct svga_context *svga = svga_context( pipe );
 153    unsigned reduced_prim = u_reduced_prim( info->mode );
 154    unsigned count = info->count;
 155    enum pipe_error ret = 0;
 156
 157    if (!u_trim_pipe_prim( info->mode, &count ))
 158       return;
 159
 160    if (svga->state.sw.need_swtnl != svga->prev_draw_swtnl) {
 161       /* We're switching between SW and HW drawing.  Do a flush to avoid
 162        * mixing HW and SW rendering with the same vertex buffer.
 163        */
 164       pipe->flush(pipe, NULL);
 165       svga->prev_draw_swtnl = svga->state.sw.need_swtnl;
 166    }
 167
 168    /*
 169     * Mark currently bound target surfaces as dirty
 170     * doesn't really matter if it is done before drawing.
 171     *
 172     * TODO If we ever normaly return something other then
 173     * true we should not mark it as dirty then.
 174     */
 175    svga_mark_surfaces_dirty(svga_context(pipe));
 176
 177    if (svga->curr.reduced_prim != reduced_prim) {
 178       svga->curr.reduced_prim = reduced_prim;
 179       svga->dirty |= SVGA_NEW_REDUCED_PRIMITIVE;
 180    }
 181
 182    svga_update_state_retry( svga, SVGA_STATE_NEED_SWTNL );
 183
 184 #ifdef DEBUG
 185    if (svga->curr.vs->base.id == svga->debug.disable_shader ||
 186        svga->curr.fs->base.id == svga->debug.disable_shader)
 187       return;
 188 #endif
 189
 190    if (svga->state.sw.need_swtnl) {
 191       ret = svga_swtnl_draw_vbo( svga, info );
 192    }
 193    else {
 194       if (info->indexed && svga->curr.ib.buffer) {
 195          unsigned offset;
 196
 197          assert(svga->curr.ib.offset % svga->curr.ib.index_size == 0);
 198          offset = svga->curr.ib.offset / svga->curr.ib.index_size;
 199
 200          ret = retry_draw_range_elements( svga,
 201                                           svga->curr.ib.buffer,
 202                                           svga->curr.ib.index_size,
 203                                           info->index_bias,
 204                                           info->min_index,
 205                                           info->max_index,
 206                                           info->mode,
 207                                           info->start + offset,
 208                                           info->count,
 209                                           TRUE );
 210       }
 211       else {
 212          ret = retry_draw_arrays( svga,
 213                                   info->mode,
 214                                   info->start,
 215                                   info->count,
 216                                   TRUE );
 217       }
 218    }
 219
 220    if (SVGA_DEBUG & DEBUG_FLUSH) {
 221       svga_hwtnl_flush_retry( svga );
 222       svga_context_flush(svga, NULL);
 223    }
 224 }
 225
 226
 227 void svga_init_draw_functions( struct svga_context *svga )
 228 {
 229    svga->pipe.draw_vbo = svga_draw_vbo;
 230 }