src/gallium/auxiliary/draw/draw_vs.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28  /*
  29   * Authors:
  30   *   Keith Whitwell <keith@tungstengraphics.com>
  31   *   Brian Paul
  32   */
  33
  34 #include "util/u_math.h"
  35 #include "util/u_memory.h"
  36
  37 #include "pipe/p_shader_tokens.h"
  38
  39 #include "draw_private.h"
  40 #include "draw_context.h"
  41 #include "draw_vs.h"
  42
  43 #include "translate/translate.h"
  44 #include "translate/translate_cache.h"
  45
  46 #include "tgsi/tgsi_dump.h"
  47 #include "tgsi/tgsi_exec.h"
  48
  49
  50
  51 void draw_vs_set_constants( struct draw_context *draw,
  52                             const float (*constants)[4],
  53                             unsigned size )
  54 {
  55    if (((uintptr_t)constants) & 0xf) {
  56       if (size > draw->vs.const_storage_size) {
  57          if (draw->vs.aligned_constant_storage)
  58             align_free((void *)draw->vs.aligned_constant_storage);
  59          draw->vs.aligned_constant_storage = align_malloc( size, 16 );
  60       }
  61       memcpy( (void*)draw->vs.aligned_constant_storage,
  62               constants,
  63               size );
  64       constants = draw->vs.aligned_constant_storage;
  65    }
  66
  67    draw->vs.aligned_constants = constants;
  68    draw_vs_aos_machine_constants( draw->vs.aos_machine, constants );
  69 }
  70
  71
  72 void draw_vs_set_viewport( struct draw_context *draw,
  73                            const struct pipe_viewport_state *viewport )
  74 {
  75    draw_vs_aos_machine_viewport( draw->vs.aos_machine, viewport );
  76 }
  77
  78
  79
  80 struct draw_vertex_shader *
  81 draw_create_vertex_shader(struct draw_context *draw,
  82                           const struct pipe_shader_state *shader)
  83 {
  84    struct draw_vertex_shader *vs;
  85
  86    if (draw->dump_vs) {
  87       tgsi_dump(shader->tokens, 0);
  88    }
  89
  90    vs = draw_create_vs_llvm( draw, shader );
  91    if (!vs) {
  92       vs = draw_create_vs_sse( draw, shader );
  93       if (!vs) {
  94          vs = draw_create_vs_ppc( draw, shader );
  95          if (!vs) {
  96             vs = draw_create_vs_exec( draw, shader );
  97          }
  98       }
  99    }
 100
 101    if (vs)
 102    {
 103       uint i;
 104       for (i = 0; i < vs->info.num_outputs; i++) {
 105          if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_POSITION &&
 106              vs->info.output_semantic_index[i] == 0)
 107             vs->position_output = i;
 108          else if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_EDGEFLAG &&
 109              vs->info.output_semantic_index[i] == 0)
 110             vs->edgeflag_output = i;
 111       }
 112    }
 113
 114    assert(vs);
 115    return vs;
 116 }
 117
 118
 119 void
 120 draw_bind_vertex_shader(struct draw_context *draw,
 121                         struct draw_vertex_shader *dvs)
 122 {
 123    draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 124
 125    if (dvs)
 126    {
 127       draw->vs.vertex_shader = dvs;
 128       draw->vs.num_vs_outputs = dvs->info.num_outputs;
 129       draw->vs.position_output = dvs->position_output;
 130       draw->vs.edgeflag_output = dvs->edgeflag_output;
 131       dvs->prepare( dvs, draw );
 132    }
 133    else {
 134       draw->vs.vertex_shader = NULL;
 135       draw->vs.num_vs_outputs = 0;
 136    }
 137 }
 138
 139
 140 void
 141 draw_delete_vertex_shader(struct draw_context *draw,
 142                           struct draw_vertex_shader *dvs)
 143 {
 144    unsigned i;
 145
 146    for (i = 0; i < dvs->nr_varients; i++)
 147       dvs->varient[i]->destroy( dvs->varient[i] );
 148
 149    dvs->nr_varients = 0;
 150
 151    dvs->delete( dvs );
 152 }
 153
 154
 155
 156 boolean
 157 draw_vs_init( struct draw_context *draw )
 158 {
 159    draw->dump_vs = debug_get_bool_option("GALLIUM_DUMP_VS", FALSE);
 160
 161    draw->vs.machine = tgsi_exec_machine_create();
 162    if (!draw->vs.machine)
 163       return FALSE;
 164
 165    draw->vs.emit_cache = translate_cache_create();
 166    if (!draw->vs.emit_cache)
 167       return FALSE;
 168
 169    draw->vs.fetch_cache = translate_cache_create();
 170    if (!draw->vs.fetch_cache)
 171       return FALSE;
 172
 173    draw->vs.aos_machine = draw_vs_aos_machine();
 174 #ifdef PIPE_ARCH_X86
 175    if (!draw->vs.aos_machine)
 176       return FALSE;
 177 #endif
 178
 179    return TRUE;
 180 }
 181
 182 void
 183 draw_vs_destroy( struct draw_context *draw )
 184 {
 185    if (draw->vs.fetch_cache)
 186       translate_cache_destroy(draw->vs.fetch_cache);
 187
 188    if (draw->vs.emit_cache)
 189       translate_cache_destroy(draw->vs.emit_cache);
 190
 191    if (draw->vs.aos_machine)
 192       draw_vs_aos_machine_destroy(draw->vs.aos_machine);
 193
 194    if (draw->vs.aligned_constant_storage)
 195       align_free((void*)draw->vs.aligned_constant_storage);
 196
 197    tgsi_exec_machine_destroy(draw->vs.machine);
 198 }
 199
 200
 201 struct draw_vs_varient *
 202 draw_vs_lookup_varient( struct draw_vertex_shader *vs,
 203                         const struct draw_vs_varient_key *key )
 204 {
 205    struct draw_vs_varient *varient;
 206    unsigned i;
 207
 208    /* Lookup existing varient:
 209     */
 210    for (i = 0; i < vs->nr_varients; i++)
 211       if (draw_vs_varient_key_compare(key, &vs->varient[i]->key) == 0)
 212          return vs->varient[i];
 213
 214    /* Else have to create a new one:
 215     */
 216    varient = vs->create_varient( vs, key );
 217    if (varient == NULL)
 218       return NULL;
 219
 220    /* Add it to our list, could be smarter:
 221     */
 222    if (vs->nr_varients < Elements(vs->varient)) {
 223       vs->varient[vs->nr_varients++] = varient;
 224    }
 225    else {
 226       vs->last_varient++;
 227       vs->last_varient %= Elements(vs->varient);
 228       vs->varient[vs->last_varient]->destroy(vs->varient[vs->last_varient]);
 229       vs->varient[vs->last_varient] = varient;
 230    }
 231
 232    /* Done
 233     */
 234    return varient;
 235 }
 236
 237
 238 struct translate *
 239 draw_vs_get_fetch( struct draw_context *draw,
 240                    struct translate_key *key )
 241 {
 242    if (!draw->vs.fetch ||
 243        translate_key_compare(&draw->vs.fetch->key, key) != 0)
 244    {
 245       translate_key_sanitize(key);
 246       draw->vs.fetch = translate_cache_find(draw->vs.fetch_cache, key);
 247    }
 248
 249    return draw->vs.fetch;
 250 }
 251
 252 struct translate *
 253 draw_vs_get_emit( struct draw_context *draw,
 254                   struct translate_key *key )
 255 {
 256    if (!draw->vs.emit ||
 257        translate_key_compare(&draw->vs.emit->key, key) != 0)
 258    {
 259       translate_key_sanitize(key);
 260       draw->vs.emit = translate_cache_find(draw->vs.emit_cache, key);
 261    }
 262
 263    return draw->vs.emit;
 264 }