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