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    return PIPE_OK;
  77
  78 retry:
  79    svga_context_flush( svga, NULL );
  80
  81    if (do_retry)
  82    {
  83       return retry_draw_range_elements( svga,
  84                                         index_buffer, index_size, index_bias,
  85                                         min_index, max_index,
  86                                         prim, start, count,
  87                                         FALSE );
  88    }
  89
  90    return ret;
  91 }
  92
  93
  94 static enum pipe_error
  95 retry_draw_arrays( struct svga_context *svga,
  96                    unsigned prim,
  97                    unsigned start,
  98                    unsigned count,
  99                    boolean do_retry )
 100 {
 101    enum pipe_error ret;
 102
 103    svga_hwtnl_set_unfilled( svga->hwtnl,
 104                             svga->curr.rast->hw_unfilled );
 105
 106    svga_hwtnl_set_flatshade( svga->hwtnl,
 107                              svga->curr.rast->templ.flatshade,
 108                              svga->curr.rast->templ.flatshade_first );
 109
 110    ret = svga_update_state( svga, SVGA_STATE_HW_DRAW );
 111    if (ret)
 112       goto retry;
 113
 114    ret = svga_hwtnl_draw_arrays( svga->hwtnl, prim,
 115                                  start, count );
 116    if (ret)
 117       goto retry;
 118
 119    return 0;
 120
 121 retry:
 122    if (ret == PIPE_ERROR_OUT_OF_MEMORY && do_retry)
 123    {
 124       svga_context_flush( svga, NULL );
 125
 126       return retry_draw_arrays( svga,
 127                                 prim,
 128                                 start,
 129                                 count,
 130                                 FALSE );
 131    }
 132
 133    return ret;
 134 }
 135
 136
 137 static void
 138 svga_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
 139 {
 140    struct svga_context *svga = svga_context( pipe );
 141    unsigned reduced_prim = u_reduced_prim( info->mode );
 142    unsigned count = info->count;
 143    enum pipe_error ret = 0;
 144
 145    if (!u_trim_pipe_prim( info->mode, &count ))
 146       return;
 147
 148    if (svga->state.sw.need_swtnl != svga->prev_draw_swtnl) {
 149       /* We're switching between SW and HW drawing.  Do a flush to avoid
 150        * mixing HW and SW rendering with the same vertex buffer.
 151        */
 152       pipe->flush(pipe, NULL);
 153       svga->prev_draw_swtnl = svga->state.sw.need_swtnl;
 154    }
 155
 156    /*
 157     * Mark currently bound target surfaces as dirty
 158     * doesn't really matter if it is done before drawing.
 159     *
 160     * TODO If we ever normaly return something other then
 161     * true we should not mark it as dirty then.
 162     */
 163    svga_mark_surfaces_dirty(svga_context(pipe));
 164
 165    if (svga->curr.reduced_prim != reduced_prim) {
 166       svga->curr.reduced_prim = reduced_prim;
 167       svga->dirty |= SVGA_NEW_REDUCED_PRIMITIVE;
 168    }
 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       ret = svga_swtnl_draw_vbo( svga, info );
 180    }
 181    else {
 182       if (info->indexed && svga->curr.ib.buffer) {
 183          unsigned offset;
 184
 185          assert(svga->curr.ib.offset % svga->curr.ib.index_size == 0);
 186          offset = svga->curr.ib.offset / svga->curr.ib.index_size;
 187
 188          ret = retry_draw_range_elements( svga,
 189                                           svga->curr.ib.buffer,
 190                                           svga->curr.ib.index_size,
 191                                           info->index_bias,
 192                                           info->min_index,
 193                                           info->max_index,
 194                                           info->mode,
 195                                           info->start + offset,
 196                                           info->count,
 197                                           TRUE );
 198       }
 199       else {
 200          ret = retry_draw_arrays( svga,
 201                                   info->mode,
 202                                   info->start,
 203                                   info->count,
 204                                   TRUE );
 205       }
 206    }
 207
 208    if (SVGA_DEBUG & DEBUG_FLUSH) {
 209       svga_hwtnl_flush_retry( svga );
 210       svga_context_flush(svga, NULL);
 211    }
 212 }
 213
 214
 215 void svga_init_draw_functions( struct svga_context *svga )
 216 {
 217    svga->pipe.draw_vbo = svga_draw_vbo;
 218 }