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
  47
  48
  49 void draw_vs_set_constants( struct draw_context *draw,
  50                             const float (*constants)[4],
  51                             unsigned size )
  52 {
  53    if (((uintptr_t)constants) & 0xf) {
  54       if (size > draw->vs.const_storage_size) {
  55          if (draw->vs.aligned_constant_storage)
  56             align_free((void *)draw->vs.aligned_constant_storage);
  57          draw->vs.aligned_constant_storage = align_malloc( size, 16 );
  58       }
  59       memcpy( (void*)draw->vs.aligned_constant_storage,
  60               constants,
  61               size );
  62       constants = draw->vs.aligned_constant_storage;
  63    }
  64
  65    draw->vs.aligned_constants = constants;
  66    draw_vs_aos_machine_constants( draw->vs.aos_machine, constants );
  67 }
  68
  69
  70 void draw_vs_set_viewport( struct draw_context *draw,
  71                            const struct pipe_viewport_state *viewport )
  72 {
  73    draw_vs_aos_machine_viewport( draw->vs.aos_machine, viewport );
  74 }
  75
  76
  77
  78 struct draw_vertex_shader *
  79 draw_create_vertex_shader(struct draw_context *draw,
  80                           const struct pipe_shader_state *shader)
  81 {
  82    struct draw_vertex_shader *vs;
  83
  84    vs = draw_create_vs_llvm( draw, shader );
  85    if (!vs) {
  86       vs = draw_create_vs_sse( draw, shader );
  87       if (!vs) {
  88          vs = draw_create_vs_ppc( draw, shader );
  89          if (!vs) {
  90             vs = draw_create_vs_exec( draw, shader );
  91          }
  92       }
  93    }
  94
  95    if (vs)
  96    {
  97       uint i;
  98       for (i = 0; i < vs->info.num_outputs; i++) {
  99          if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_POSITION &&
 100              vs->info.output_semantic_index[i] == 0)
 101             vs->position_output = i;
 102       }
 103    }
 104
 105    assert(vs);
 106    return vs;
 107 }
 108
 109
 110 void
 111 draw_bind_vertex_shader(struct draw_context *draw,
 112                         struct draw_vertex_shader *dvs)
 113 {
 114    draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 115
 116    if (dvs)
 117    {
 118       draw->vs.vertex_shader = dvs;
 119       draw->vs.num_vs_outputs = dvs->info.num_outputs;
 120       draw->vs.position_output = dvs->position_output;
 121       dvs->prepare( dvs, draw );
 122    }
 123    else {
 124       draw->vs.vertex_shader = NULL;
 125       draw->vs.num_vs_outputs = 0;
 126    }
 127 }
 128
 129
 130 void
 131 draw_delete_vertex_shader(struct draw_context *draw,
 132                           struct draw_vertex_shader *dvs)
 133 {
 134    unsigned i;
 135
 136    for (i = 0; i < dvs->nr_varients; i++)
 137       dvs->varient[i]->destroy( dvs->varient[i] );
 138
 139    dvs->nr_varients = 0;
 140
 141    dvs->delete( dvs );
 142 }
 143
 144
 145
 146 boolean
 147 draw_vs_init( struct draw_context *draw )
 148 {
 149    tgsi_exec_machine_init(&draw->vs.machine);
 150
 151    /* FIXME: give this machine thing a proper constructor:
 152     */
 153    draw->vs.machine.Inputs = align_malloc(PIPE_MAX_ATTRIBS * sizeof(struct tgsi_exec_vector), 16);
 154    if (!draw->vs.machine.Inputs)
 155       return FALSE;
 156
 157    draw->vs.machine.Outputs = align_malloc(PIPE_MAX_ATTRIBS * sizeof(struct tgsi_exec_vector), 16);
 158    if (!draw->vs.machine.Outputs)
 159       return FALSE;
 160
 161    draw->vs.emit_cache = translate_cache_create();
 162    if (!draw->vs.emit_cache)
 163       return FALSE;
 164
 165    draw->vs.fetch_cache = translate_cache_create();
 166    if (!draw->vs.fetch_cache)
 167       return FALSE;
 168
 169    draw->vs.aos_machine = draw_vs_aos_machine();
 170 #ifdef PIPE_ARCH_X86
 171    if (!draw->vs.aos_machine)
 172       return FALSE;
 173 #endif
 174
 175    return TRUE;
 176 }
 177
 178 void
 179 draw_vs_destroy( struct draw_context *draw )
 180 {
 181    if (draw->vs.machine.Inputs)
 182       align_free(draw->vs.machine.Inputs);
 183
 184    if (draw->vs.machine.Outputs)
 185       align_free(draw->vs.machine.Outputs);
 186
 187    if (draw->vs.fetch_cache)
 188       translate_cache_destroy(draw->vs.fetch_cache);
 189
 190    if (draw->vs.emit_cache)
 191       translate_cache_destroy(draw->vs.emit_cache);
 192
 193    if (draw->vs.aos_machine)
 194       draw_vs_aos_machine_destroy(draw->vs.aos_machine);
 195
 196    if (draw->vs.aligned_constant_storage)
 197       align_free((void*)draw->vs.aligned_constant_storage);
 198
 199    tgsi_exec_machine_free_data(&draw->vs.machine);
 200
 201 }
 202
 203
 204 struct draw_vs_varient *
 205 draw_vs_lookup_varient( struct draw_vertex_shader *vs,
 206                         const struct draw_vs_varient_key *key )
 207 {
 208    struct draw_vs_varient *varient;
 209    unsigned i;
 210
 211    /* Lookup existing varient:
 212     */
 213    for (i = 0; i < vs->nr_varients; i++)
 214       if (draw_vs_varient_key_compare(key, &vs->varient[i]->key) == 0)
 215          return vs->varient[i];
 216
 217    /* Else have to create a new one:
 218     */
 219    varient = vs->create_varient( vs, key );
 220    if (varient == NULL)
 221       return NULL;
 222
 223    /* Add it to our list, could be smarter:
 224     */
 225    if (vs->nr_varients < Elements(vs->varient)) {
 226       vs->varient[vs->nr_varients++] = varient;
 227    }
 228    else {
 229       vs->last_varient++;
 230       vs->last_varient %= Elements(vs->varient);
 231       vs->varient[vs->last_varient]->destroy(vs->varient[vs->last_varient]);
 232       vs->varient[vs->last_varient] = varient;
 233    }
 234
 235    /* Done
 236     */
 237    return varient;
 238 }
 239
 240
 241 struct translate *
 242 draw_vs_get_fetch( struct draw_context *draw,
 243                    struct translate_key *key )
 244 {
 245    if (!draw->vs.fetch ||
 246        translate_key_compare(&draw->vs.fetch->key, key) != 0)
 247    {
 248       translate_key_sanitize(key);
 249       draw->vs.fetch = translate_cache_find(draw->vs.fetch_cache, key);
 250    }
 251
 252    return draw->vs.fetch;
 253 }
 254
 255 struct translate *
 256 draw_vs_get_emit( struct draw_context *draw,
 257                   struct translate_key *key )
 258 {
 259    if (!draw->vs.emit ||
 260        translate_key_compare(&draw->vs.emit->key, key) != 0)
 261    {
 262       translate_key_sanitize(key);
 263       draw->vs.emit = translate_cache_find(draw->vs.emit_cache, key);
 264    }
 265
 266    return draw->vs.emit;
 267 }