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 DEBUG_GET_ONCE_BOOL_OPTION(gallium_dump_vs, "GALLIUM_DUMP_VS", FALSE);
  50
  51 void
  52 draw_vs_set_constants(struct draw_context *draw,
  53                       unsigned slot,
  54                       const void *constants,
  55                       unsigned size)
  56 {
  57    if (((uintptr_t)constants) & 0xf) {
  58       if (size > draw->vs.const_storage_size[slot]) {
  59          if (draw->vs.aligned_constant_storage[slot]) {
  60             align_free((void *)draw->vs.aligned_constant_storage[slot]);
  61          }
  62          draw->vs.aligned_constant_storage[slot] = align_malloc(size, 16);
  63       }
  64       assert(constants);
  65       memcpy((void *)draw->vs.aligned_constant_storage[slot],
  66              constants,
  67              size);
  68       constants = draw->vs.aligned_constant_storage[slot];
  69    }
  70
  71    draw->vs.aligned_constants[slot] = constants;
  72    draw_vs_aos_machine_constants(draw->vs.aos_machine, slot, constants);
  73 }
  74
  75
  76 void draw_vs_set_viewport( struct draw_context *draw,
  77                            const struct pipe_viewport_state *viewport )
  78 {
  79    draw_vs_aos_machine_viewport( draw->vs.aos_machine, viewport );
  80 }
  81
  82
  83
  84 struct draw_vertex_shader *
  85 draw_create_vertex_shader(struct draw_context *draw,
  86                           const struct pipe_shader_state *shader)
  87 {
  88    struct draw_vertex_shader *vs;
  89
  90    if (draw->dump_vs) {
  91       tgsi_dump(shader->tokens, 0);
  92    }
  93
  94    vs = draw_create_vs_sse( draw, shader );
  95    if (!vs) {
  96       vs = draw_create_vs_ppc( draw, shader );
  97       if (!vs) {
  98          vs = draw_create_vs_exec( draw, shader );
  99       }
 100    }
 101
 102    if (vs)
 103    {
 104       uint i;
 105       for (i = 0; i < vs->info.num_outputs; i++) {
 106          if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_POSITION &&
 107              vs->info.output_semantic_index[i] == 0)
 108             vs->position_output = i;
 109          else if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_EDGEFLAG &&
 110              vs->info.output_semantic_index[i] == 0)
 111             vs->edgeflag_output = i;
 112       }
 113    }
 114
 115    assert(vs);
 116    return vs;
 117 }
 118
 119
 120 void
 121 draw_bind_vertex_shader(struct draw_context *draw,
 122                         struct draw_vertex_shader *dvs)
 123 {
 124    draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 125
 126    if (dvs)
 127    {
 128       draw->vs.vertex_shader = dvs;
 129       draw->vs.num_vs_outputs = dvs->info.num_outputs;
 130       draw->vs.position_output = dvs->position_output;
 131       draw->vs.edgeflag_output = dvs->edgeflag_output;
 132       dvs->prepare( dvs, draw );
 133    }
 134    else {
 135       draw->vs.vertex_shader = NULL;
 136       draw->vs.num_vs_outputs = 0;
 137    }
 138 }
 139
 140
 141 void
 142 draw_delete_vertex_shader(struct draw_context *draw,
 143                           struct draw_vertex_shader *dvs)
 144 {
 145    unsigned i;
 146
 147    for (i = 0; i < dvs->nr_varients; i++)
 148       dvs->varient[i]->destroy( dvs->varient[i] );
 149
 150    dvs->nr_varients = 0;
 151
 152    dvs->delete( dvs );
 153 }
 154
 155
 156
 157 boolean
 158 draw_vs_init( struct draw_context *draw )
 159 {
 160    draw->dump_vs = debug_get_option_gallium_dump_vs();
 161
 162    draw->vs.machine = tgsi_exec_machine_create();
 163    if (!draw->vs.machine)
 164       return FALSE;
 165
 166    draw->vs.emit_cache = translate_cache_create();
 167    if (!draw->vs.emit_cache)
 168       return FALSE;
 169
 170    draw->vs.fetch_cache = translate_cache_create();
 171    if (!draw->vs.fetch_cache)
 172       return FALSE;
 173
 174    draw->vs.aos_machine = draw_vs_aos_machine();
 175 #ifdef PIPE_ARCH_X86
 176    if (!draw->vs.aos_machine)
 177       return FALSE;
 178 #endif
 179
 180    return TRUE;
 181 }
 182
 183 void
 184 draw_vs_destroy( struct draw_context *draw )
 185 {
 186    uint i;
 187
 188    if (draw->vs.fetch_cache)
 189       translate_cache_destroy(draw->vs.fetch_cache);
 190
 191    if (draw->vs.emit_cache)
 192       translate_cache_destroy(draw->vs.emit_cache);
 193
 194    if (draw->vs.aos_machine)
 195       draw_vs_aos_machine_destroy(draw->vs.aos_machine);
 196
 197    for (i = 0; i < PIPE_MAX_CONSTANT_BUFFERS; i++) {
 198       if (draw->vs.aligned_constant_storage[i]) {
 199          align_free((void *)draw->vs.aligned_constant_storage[i]);
 200       }
 201    }
 202
 203    tgsi_exec_machine_destroy(draw->vs.machine);
 204 }
 205
 206
 207 struct draw_vs_varient *
 208 draw_vs_lookup_varient( struct draw_vertex_shader *vs,
 209                         const struct draw_vs_varient_key *key )
 210 {
 211    struct draw_vs_varient *varient;
 212    unsigned i;
 213
 214    /* Lookup existing varient:
 215     */
 216    for (i = 0; i < vs->nr_varients; i++)
 217       if (draw_vs_varient_key_compare(key, &vs->varient[i]->key) == 0)
 218          return vs->varient[i];
 219
 220    /* Else have to create a new one:
 221     */
 222    varient = vs->create_varient( vs, key );
 223    if (varient == NULL)
 224       return NULL;
 225
 226    /* Add it to our list, could be smarter:
 227     */
 228    if (vs->nr_varients < Elements(vs->varient)) {
 229       vs->varient[vs->nr_varients++] = varient;
 230    }
 231    else {
 232       vs->last_varient++;
 233       vs->last_varient %= Elements(vs->varient);
 234       vs->varient[vs->last_varient]->destroy(vs->varient[vs->last_varient]);
 235       vs->varient[vs->last_varient] = varient;
 236    }
 237
 238    /* Done
 239     */
 240    return varient;
 241 }
 242
 243
 244 struct translate *
 245 draw_vs_get_fetch( struct draw_context *draw,
 246                    struct translate_key *key )
 247 {
 248    if (!draw->vs.fetch ||
 249        translate_key_compare(&draw->vs.fetch->key, key) != 0)
 250    {
 251       translate_key_sanitize(key);
 252       draw->vs.fetch = translate_cache_find(draw->vs.fetch_cache, key);
 253    }
 254
 255    return draw->vs.fetch;
 256 }
 257
 258 struct translate *
 259 draw_vs_get_emit( struct draw_context *draw,
 260                   struct translate_key *key )
 261 {
 262    if (!draw->vs.emit ||
 263        translate_key_compare(&draw->vs.emit->key, key) != 0)
 264    {
 265       translate_key_sanitize(key);
 266       draw->vs.emit = translate_cache_find(draw->vs.emit_cache, key);
 267    }
 268
 269    return draw->vs.emit;
 270 }