reactos/dll/opengl/mesa/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
  52 /**
  53  * Set a vertex shader constant buffer.
  54  * \param slot  which constant buffer in [0, PIPE_MAX_CONSTANT_BUFFERS-1]
  55  * \param constants  the mapped buffer
  56  * \param size  size of buffer in bytes
  57  */
  58 void
  59 draw_vs_set_constants(struct draw_context *draw,
  60                       unsigned slot,
  61                       const void *constants,
  62                       unsigned size)
  63 {
  64    const int alignment = 16;
  65
  66    /* check if buffer is 16-byte aligned */
  67    if (((uintptr_t)constants) & (alignment - 1)) {
  68       /* if not, copy the constants into a new, 16-byte aligned buffer */
  69       if (size > draw->vs.const_storage_size[slot]) {
  70          if (draw->vs.aligned_constant_storage[slot]) {
  71             align_free((void *)draw->vs.aligned_constant_storage[slot]);
  72             draw->vs.const_storage_size[slot] = 0;
  73          }
  74          draw->vs.aligned_constant_storage[slot] =
  75             align_malloc(size, alignment);
  76          if (draw->vs.aligned_constant_storage[slot]) {
  77             draw->vs.const_storage_size[slot] = size;
  78          }
  79       }
  80       assert(constants);
  81       if (draw->vs.aligned_constant_storage[slot]) {
  82          memcpy((void *)draw->vs.aligned_constant_storage[slot],
  83                 constants,
  84                 size);
  85       }
  86       constants = draw->vs.aligned_constant_storage[slot];
  87    }
  88
  89    draw->vs.aligned_constants[slot] = constants;
  90 }
  91
  92
  93 void draw_vs_set_viewport( struct draw_context *draw,
  94                            const struct pipe_viewport_state *viewport )
  95 {
  96 }
  97
  98
  99
 100 struct draw_vertex_shader *
 101 draw_create_vertex_shader(struct draw_context *draw,
 102                           const struct pipe_shader_state *shader)
 103 {
 104    struct draw_vertex_shader *vs = NULL;
 105
 106    if (draw->dump_vs) {
 107       tgsi_dump(shader->tokens, 0);
 108    }
 109
 110 #if HAVE_LLVM
 111    if (draw->pt.middle.llvm) {
 112       vs = draw_create_vs_llvm(draw, shader);
 113    }
 114 #endif
 115
 116    if (!vs) {
 117       vs = draw_create_vs_exec( draw, shader );
 118    }
 119
 120    if (vs)
 121    {
 122       uint i;
 123       bool found_clipvertex = FALSE;
 124       for (i = 0; i < vs->info.num_outputs; i++) {
 125          if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_POSITION &&
 126              vs->info.output_semantic_index[i] == 0)
 127             vs->position_output = i;
 128          else if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_EDGEFLAG &&
 129              vs->info.output_semantic_index[i] == 0)
 130             vs->edgeflag_output = i;
 131          else if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_CLIPVERTEX &&
 132                   vs->info.output_semantic_index[i] == 0) {
 133             found_clipvertex = TRUE;
 134             vs->clipvertex_output = i;
 135          } else if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_CLIPDIST) {
 136             if (vs->info.output_semantic_index[i] == 0)
 137                vs->clipdistance_output[0] = i;
 138             else
 139                vs->clipdistance_output[1] = i;
 140          }
 141       }
 142       if (!found_clipvertex)
 143          vs->clipvertex_output = vs->position_output;
 144    }
 145
 146    assert(vs);
 147    return vs;
 148 }
 149
 150
 151 void
 152 draw_bind_vertex_shader(struct draw_context *draw,
 153                         struct draw_vertex_shader *dvs)
 154 {
 155    draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 156
 157    if (dvs)
 158    {
 159       draw->vs.vertex_shader = dvs;
 160       draw->vs.num_vs_outputs = dvs->info.num_outputs;
 161       draw->vs.position_output = dvs->position_output;
 162       draw->vs.edgeflag_output = dvs->edgeflag_output;
 163       draw->vs.clipvertex_output = dvs->clipvertex_output;
 164       draw->vs.clipdistance_output[0] = dvs->clipdistance_output[0];
 165       draw->vs.clipdistance_output[1] = dvs->clipdistance_output[1];
 166       dvs->prepare( dvs, draw );
 167    }
 168    else {
 169       draw->vs.vertex_shader = NULL;
 170       draw->vs.num_vs_outputs = 0;
 171    }
 172 }
 173
 174
 175 void
 176 draw_delete_vertex_shader(struct draw_context *draw,
 177                           struct draw_vertex_shader *dvs)
 178 {
 179    unsigned i;
 180
 181    for (i = 0; i < dvs->nr_variants; i++)
 182       dvs->variant[i]->destroy( dvs->variant[i] );
 183
 184    dvs->nr_variants = 0;
 185
 186    dvs->delete( dvs );
 187 }
 188
 189
 190
 191 boolean
 192 draw_vs_init( struct draw_context *draw )
 193 {
 194    draw->dump_vs = debug_get_option_gallium_dump_vs();
 195
 196    draw->vs.machine = tgsi_exec_machine_create();
 197    if (!draw->vs.machine)
 198       return FALSE;
 199
 200    draw->vs.emit_cache = translate_cache_create();
 201    if (!draw->vs.emit_cache)
 202       return FALSE;
 203
 204    draw->vs.fetch_cache = translate_cache_create();
 205    if (!draw->vs.fetch_cache)
 206       return FALSE;
 207
 208    return TRUE;
 209 }
 210
 211 void
 212 draw_vs_destroy( struct draw_context *draw )
 213 {
 214    uint i;
 215
 216    if (draw->vs.fetch_cache)
 217       translate_cache_destroy(draw->vs.fetch_cache);
 218
 219    if (draw->vs.emit_cache)
 220       translate_cache_destroy(draw->vs.emit_cache);
 221
 222    for (i = 0; i < PIPE_MAX_CONSTANT_BUFFERS; i++) {
 223       if (draw->vs.aligned_constant_storage[i]) {
 224          align_free((void *)draw->vs.aligned_constant_storage[i]);
 225       }
 226    }
 227
 228    tgsi_exec_machine_destroy(draw->vs.machine);
 229 }
 230
 231
 232 struct draw_vs_variant *
 233 draw_vs_lookup_variant( struct draw_vertex_shader *vs,
 234                         const struct draw_vs_variant_key *key )
 235 {
 236    struct draw_vs_variant *variant;
 237    unsigned i;
 238
 239    /* Lookup existing variant:
 240     */
 241    for (i = 0; i < vs->nr_variants; i++)
 242       if (draw_vs_variant_key_compare(key, &vs->variant[i]->key) == 0)
 243          return vs->variant[i];
 244
 245    /* Else have to create a new one:
 246     */
 247    variant = vs->create_variant( vs, key );
 248    if (variant == NULL)
 249       return NULL;
 250
 251    /* Add it to our list, could be smarter:
 252     */
 253    if (vs->nr_variants < Elements(vs->variant)) {
 254       vs->variant[vs->nr_variants++] = variant;
 255    }
 256    else {
 257       vs->last_variant++;
 258       vs->last_variant %= Elements(vs->variant);
 259       vs->variant[vs->last_variant]->destroy(vs->variant[vs->last_variant]);
 260       vs->variant[vs->last_variant] = variant;
 261    }
 262
 263    /* Done
 264     */
 265    return variant;
 266 }
 267
 268
 269 struct translate *
 270 draw_vs_get_fetch( struct draw_context *draw,
 271                    struct translate_key *key )
 272 {
 273    if (!draw->vs.fetch ||
 274        translate_key_compare(&draw->vs.fetch->key, key) != 0)
 275    {
 276       translate_key_sanitize(key);
 277       draw->vs.fetch = translate_cache_find(draw->vs.fetch_cache, key);
 278    }
 279
 280    return draw->vs.fetch;
 281 }
 282
 283 struct translate *
 284 draw_vs_get_emit( struct draw_context *draw,
 285                   struct translate_key *key )
 286 {
 287    if (!draw->vs.emit ||
 288        translate_key_compare(&draw->vs.emit->key, key) != 0)
 289    {
 290       translate_key_sanitize(key);
 291       draw->vs.emit = translate_cache_find(draw->vs.emit_cache, key);
 292    }
 293
 294    return draw->vs.emit;
 295 }