src/gallium/auxiliary/draw/draw_pt_fetch_shade_pipeline.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 #include "pipe/p_util.h"
  29 #include "draw/draw_context.h"
  30 #include "draw/draw_vbuf.h"
  31 #include "draw/draw_vertex.h"
  32 #include "draw/draw_pt.h"
  33 #include "draw/draw_vs.h"
  34 #include "translate/translate.h"
  35
  36
  37 struct fetch_pipeline_middle_end {
  38    struct draw_pt_middle_end base;
  39    struct draw_context *draw;
  40
  41    struct pt_emit *emit;
  42    struct pt_fetch *fetch;
  43    struct pt_post_vs *post_vs;
  44
  45    unsigned vertex_data_offset;
  46    unsigned vertex_size;
  47    unsigned prim;
  48    unsigned opt;
  49 };
  50
  51
  52 static void fetch_pipeline_prepare( struct draw_pt_middle_end *middle,
  53                                     unsigned prim,
  54                                     unsigned opt,
  55                                     unsigned *max_vertices )
  56 {
  57    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
  58    struct draw_context *draw = fpme->draw;
  59    struct draw_vertex_shader *vs = draw->vs.vertex_shader;
  60
  61    /* Add one to num_outputs because the pipeline occasionally tags on
  62     * an additional texcoord, eg for AA lines.
  63     */
  64    unsigned nr = MAX2( vs->info.num_inputs,
  65                        vs->info.num_outputs + 1 );
  66
  67    fpme->prim = prim;
  68    fpme->opt = opt;
  69
  70    /* Always leave room for the vertex header whether we need it or
  71     * not.  It's hard to get rid of it in particular because of the
  72     * viewport code in draw_pt_post_vs.c.
  73     */
  74    fpme->vertex_size = sizeof(struct vertex_header) + nr * 4 * sizeof(float);
  75
  76
  77
  78    draw_pt_fetch_prepare( fpme->fetch,
  79                           fpme->vertex_size );
  80
  81    /* XXX: it's not really gl rasterization rules we care about here,
  82     * but gl vs dx9 clip spaces.
  83     */
  84    draw_pt_post_vs_prepare( fpme->post_vs,
  85                             (boolean)draw->bypass_clipping,
  86                             (boolean)draw->identity_viewport,
  87                             (boolean)draw->rasterizer->gl_rasterization_rules );
  88
  89
  90    if (!(opt & PT_PIPELINE)) {
  91       draw_pt_emit_prepare( fpme->emit,
  92                             prim,
  93                             max_vertices );
  94
  95       *max_vertices = MAX2( *max_vertices,
  96                             DRAW_PIPE_MAX_VERTICES );
  97    }
  98    else {
  99       *max_vertices = DRAW_PIPE_MAX_VERTICES;
 100    }
 101
 102    /* No need to prepare the shader.
 103     */
 104    vs->prepare(vs, draw);
 105 }
 106
 107
 108
 109 static void fetch_pipeline_run( struct draw_pt_middle_end *middle,
 110                                 const unsigned *fetch_elts,
 111                                 unsigned fetch_count,
 112                                 const ushort *draw_elts,
 113                                 unsigned draw_count )
 114 {
 115    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
 116    struct draw_context *draw = fpme->draw;
 117    struct draw_vertex_shader *shader = draw->vs.vertex_shader;
 118    unsigned opt = fpme->opt;
 119    unsigned alloc_count = align_int( fetch_count, 4 );
 120
 121    struct vertex_header *pipeline_verts =
 122       (struct vertex_header *)MALLOC(fpme->vertex_size * alloc_count);
 123
 124    if (!pipeline_verts) {
 125       /* Not much we can do here - just skip the rendering.
 126        */
 127       assert(0);
 128       return;
 129    }
 130
 131    /* Fetch into our vertex buffer
 132     */
 133    draw_pt_fetch_run( fpme->fetch,
 134                       fetch_elts,
 135                       fetch_count,
 136                       (char *)pipeline_verts );
 137
 138    /* Run the shader, note that this overwrites the data[] parts of
 139     * the pipeline verts.  If there is no shader, ie a bypass shader,
 140     * then the inputs == outputs, and are already in the correct
 141     * place.
 142     */
 143    if (opt & PT_SHADE)
 144    {
 145       shader->run_linear(shader,
 146                          (const float (*)[4])pipeline_verts->data,
 147                          (      float (*)[4])pipeline_verts->data,
 148                          (const float (*)[4])draw->pt.user.constants,
 149                          fetch_count,
 150                          fpme->vertex_size,
 151                          fpme->vertex_size);
 152    }
 153
 154    if (draw_pt_post_vs_run( fpme->post_vs,
 155                             pipeline_verts,
 156                             fetch_count,
 157                             fpme->vertex_size ))
 158    {
 159       opt |= PT_PIPELINE;
 160    }
 161
 162    /* Do we need to run the pipeline?
 163     */
 164    if (opt & PT_PIPELINE) {
 165       draw_pipeline_run( fpme->draw,
 166                          fpme->prim,
 167                          pipeline_verts,
 168                          fetch_count,
 169                          fpme->vertex_size,
 170                          draw_elts,
 171                          draw_count );
 172    }
 173    else {
 174       draw_pt_emit( fpme->emit,
 175                     (const float (*)[4])pipeline_verts->data,
 176                     fetch_count,
 177                     fpme->vertex_size,
 178                     draw_elts,
 179                     draw_count );
 180    }
 181
 182
 183    FREE(pipeline_verts);
 184 }
 185
 186
 187 static void fetch_pipeline_linear_run( struct draw_pt_middle_end *middle,
 188                                        unsigned start,
 189                                        unsigned count)
 190 {
 191    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
 192    struct draw_context *draw = fpme->draw;
 193    struct draw_vertex_shader *shader = draw->vs.vertex_shader;
 194    unsigned opt = fpme->opt;
 195    unsigned alloc_count = align_int( count, 4 );
 196
 197    struct vertex_header *pipeline_verts =
 198       (struct vertex_header *)MALLOC(fpme->vertex_size * alloc_count);
 199
 200    if (!pipeline_verts) {
 201       /* Not much we can do here - just skip the rendering.
 202        */
 203       assert(0);
 204       return;
 205    }
 206
 207    /* Fetch into our vertex buffer
 208     */
 209    draw_pt_fetch_run_linear( fpme->fetch,
 210                              start,
 211                              count,
 212                              (char *)pipeline_verts );
 213
 214    /* Run the shader, note that this overwrites the data[] parts of
 215     * the pipeline verts.  If there is no shader, ie a bypass shader,
 216     * then the inputs == outputs, and are already in the correct
 217     * place.
 218     */
 219    if (opt & PT_SHADE)
 220    {
 221       shader->run_linear(shader,
 222                          (const float (*)[4])pipeline_verts->data,
 223                          (      float (*)[4])pipeline_verts->data,
 224                          (const float (*)[4])draw->pt.user.constants,
 225                          count,
 226                          fpme->vertex_size,
 227                          fpme->vertex_size);
 228    }
 229
 230    if (draw_pt_post_vs_run( fpme->post_vs,
 231                             pipeline_verts,
 232                             count,
 233                             fpme->vertex_size ))
 234    {
 235       opt |= PT_PIPELINE;
 236    }
 237
 238    /* Do we need to run the pipeline?
 239     */
 240    if (opt & PT_PIPELINE) {
 241       draw_pipeline_run_linear( fpme->draw,
 242                                 fpme->prim,
 243                                 pipeline_verts,
 244                                 count,
 245                                 fpme->vertex_size);
 246    }
 247    else {
 248       draw_pt_emit_linear( fpme->emit,
 249                            (const float (*)[4])pipeline_verts->data,
 250                            count,
 251                            fpme->vertex_size,
 252                            0, /*start*/
 253                            count );
 254    }
 255
 256    FREE(pipeline_verts);
 257 }
 258
 259
 260
 261 static void fetch_pipeline_linear_run_elts( struct draw_pt_middle_end *middle,
 262                                             unsigned start,
 263                                             unsigned count,
 264                                             const ushort *draw_elts,
 265                                             unsigned draw_count )
 266 {
 267    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
 268    struct draw_context *draw = fpme->draw;
 269    struct draw_vertex_shader *shader = draw->vs.vertex_shader;
 270    unsigned opt = fpme->opt;
 271    unsigned alloc_count = align_int( count, 4 );
 272
 273    struct vertex_header *pipeline_verts =
 274       (struct vertex_header *)MALLOC(fpme->vertex_size * alloc_count);
 275
 276    if (!pipeline_verts) {
 277       /* Not much we can do here - just skip the rendering.
 278        */
 279       assert(0);
 280       return;
 281    }
 282
 283    /* Fetch into our vertex buffer
 284     */
 285    draw_pt_fetch_run_linear( fpme->fetch,
 286                              start,
 287                              count,
 288                              (char *)pipeline_verts );
 289
 290    /* Run the shader, note that this overwrites the data[] parts of
 291     * the pipeline verts.  If there is no shader, ie a bypass shader,
 292     * then the inputs == outputs, and are already in the correct
 293     * place.
 294     */
 295    if (opt & PT_SHADE)
 296    {
 297       shader->run_linear(shader,
 298                          (const float (*)[4])pipeline_verts->data,
 299                          (      float (*)[4])pipeline_verts->data,
 300                          (const float (*)[4])draw->pt.user.constants,
 301                          count,
 302                          fpme->vertex_size,
 303                          fpme->vertex_size);
 304    }
 305
 306    if (draw_pt_post_vs_run( fpme->post_vs,
 307                             pipeline_verts,
 308                             count,
 309                             fpme->vertex_size ))
 310    {
 311       opt |= PT_PIPELINE;
 312    }
 313
 314    /* Do we need to run the pipeline?
 315     */
 316    if (opt & PT_PIPELINE) {
 317       draw_pipeline_run( fpme->draw,
 318                          fpme->prim,
 319                          pipeline_verts,
 320                          count,
 321                          fpme->vertex_size,
 322                          draw_elts,
 323                          draw_count );
 324    }
 325    else {
 326       draw_pt_emit( fpme->emit,
 327                     (const float (*)[4])pipeline_verts->data,
 328                     count,
 329                     fpme->vertex_size,
 330                     draw_elts,
 331                     draw_count );
 332    }
 333
 334    FREE(pipeline_verts);
 335 }
 336
 337
 338
 339 static void fetch_pipeline_finish( struct draw_pt_middle_end *middle )
 340 {
 341    /* nothing to do */
 342 }
 343
 344 static void fetch_pipeline_destroy( struct draw_pt_middle_end *middle )
 345 {
 346    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
 347
 348    if (fpme->fetch)
 349       draw_pt_fetch_destroy( fpme->fetch );
 350
 351    if (fpme->emit)
 352       draw_pt_emit_destroy( fpme->emit );
 353
 354    if (fpme->post_vs)
 355       draw_pt_post_vs_destroy( fpme->post_vs );
 356
 357    FREE(middle);
 358 }
 359
 360
 361 struct draw_pt_middle_end *draw_pt_fetch_pipeline_or_emit( struct draw_context *draw )
 362 {
 363    struct fetch_pipeline_middle_end *fpme = CALLOC_STRUCT( fetch_pipeline_middle_end );
 364    if (!fpme)
 365       goto fail;
 366
 367    fpme->base.prepare        = fetch_pipeline_prepare;
 368    fpme->base.run            = fetch_pipeline_run;
 369    fpme->base.run_linear     = fetch_pipeline_linear_run;
 370    fpme->base.run_linear_elts = fetch_pipeline_linear_run_elts;
 371    fpme->base.finish         = fetch_pipeline_finish;
 372    fpme->base.destroy        = fetch_pipeline_destroy;
 373
 374    fpme->draw = draw;
 375
 376    fpme->fetch = draw_pt_fetch_create( draw );
 377    if (!fpme->fetch)
 378       goto fail;
 379
 380    fpme->post_vs = draw_pt_post_vs_create( draw );
 381    if (!fpme->post_vs)
 382       goto fail;
 383
 384    fpme->emit = draw_pt_emit_create( draw );
 385    if (!fpme->emit)
 386       goto fail;
 387
 388    return &fpme->base;
 389
 390  fail:
 391    if (fpme)
 392       fetch_pipeline_destroy( &fpme->base );
 393
 394    return NULL;
 395 }