reactos/dll/opengl/mesa/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 "util/u_math.h"
  29 #include "util/u_memory.h"
  30 #include "util/u_prim.h"
  31 #include "draw/draw_context.h"
  32 #include "draw/draw_vbuf.h"
  33 #include "draw/draw_vertex.h"
  34 #include "draw/draw_pt.h"
  35 #include "draw/draw_vs.h"
  36 #include "draw/draw_gs.h"
  37
  38
  39 struct fetch_pipeline_middle_end {
  40    struct draw_pt_middle_end base;
  41    struct draw_context *draw;
  42
  43    struct pt_emit *emit;
  44    struct pt_so_emit *so_emit;
  45    struct pt_fetch *fetch;
  46    struct pt_post_vs *post_vs;
  47
  48    unsigned vertex_data_offset;
  49    unsigned vertex_size;
  50    unsigned input_prim;
  51    unsigned opt;
  52 };
  53
  54 static void fetch_pipeline_prepare( struct draw_pt_middle_end *middle,
  55                                     unsigned prim,
  56                                     unsigned opt,
  57                                     unsigned *max_vertices )
  58 {
  59    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
  60    struct draw_context *draw = fpme->draw;
  61    struct draw_vertex_shader *vs = draw->vs.vertex_shader;
  62    unsigned i;
  63    unsigned instance_id_index = ~0;
  64
  65    unsigned gs_out_prim = (draw->gs.geometry_shader ?
  66                            draw->gs.geometry_shader->output_primitive :
  67                            prim);
  68
  69    /* Add one to num_outputs because the pipeline occasionally tags on
  70     * an additional texcoord, eg for AA lines.
  71     */
  72    unsigned nr = MAX2( vs->info.num_inputs,
  73                        vs->info.num_outputs + 1 );
  74
  75    /* Scan for instanceID system value.
  76     */
  77    for (i = 0; i < vs->info.num_inputs; i++) {
  78       if (vs->info.input_semantic_name[i] == TGSI_SEMANTIC_INSTANCEID) {
  79          instance_id_index = i;
  80          break;
  81       }
  82    }
  83
  84    fpme->input_prim = prim;
  85    fpme->opt = opt;
  86
  87    /* Always leave room for the vertex header whether we need it or
  88     * not.  It's hard to get rid of it in particular because of the
  89     * viewport code in draw_pt_post_vs.c.
  90     */
  91    fpme->vertex_size = sizeof(struct vertex_header) + nr * 4 * sizeof(float);
  92
  93
  94
  95    draw_pt_fetch_prepare( fpme->fetch,
  96                           vs->info.num_inputs,
  97                           fpme->vertex_size,
  98                           instance_id_index );
  99    /* XXX: it's not really gl rasterization rules we care about here,
 100     * but gl vs dx9 clip spaces.
 101     */
 102    draw_pt_post_vs_prepare( fpme->post_vs,
 103                             draw->clip_xy,
 104                             draw->clip_z,
 105                             draw->clip_user,
 106                             draw->guard_band_xy,
 107                             draw->identity_viewport,
 108                             (boolean)draw->rasterizer->gl_rasterization_rules,
 109                             (draw->vs.edgeflag_output ? TRUE : FALSE) );
 110
 111    draw_pt_so_emit_prepare( fpme->so_emit );
 112
 113    if (!(opt & PT_PIPELINE)) {
 114       draw_pt_emit_prepare( fpme->emit,
 115                             gs_out_prim,
 116                             max_vertices );
 117
 118       *max_vertices = MAX2( *max_vertices, 4096 );
 119    }
 120    else {
 121       /* limit max fetches by limiting max_vertices */
 122       *max_vertices = 4096;
 123    }
 124
 125    /* No need to prepare the shader.
 126     */
 127    vs->prepare(vs, draw);
 128 }
 129
 130
 131 static void fetch( struct pt_fetch *fetch,
 132                    const struct draw_fetch_info *fetch_info,
 133                    char *output)
 134 {
 135    if (fetch_info->linear) {
 136       draw_pt_fetch_run_linear( fetch,
 137                                 fetch_info->start,
 138                                 fetch_info->count,
 139                                 output );
 140    }
 141    else {
 142       draw_pt_fetch_run( fetch,
 143                          fetch_info->elts,
 144                          fetch_info->count,
 145                          output );
 146    }
 147 }
 148
 149
 150 static void pipeline(struct fetch_pipeline_middle_end *fpme,
 151                      const struct draw_vertex_info *vert_info,
 152                      const struct draw_prim_info *prim_info)
 153 {
 154    if (prim_info->linear)
 155       draw_pipeline_run_linear( fpme->draw,
 156                                 vert_info,
 157                                 prim_info);
 158    else
 159       draw_pipeline_run( fpme->draw,
 160                          vert_info,
 161                          prim_info );
 162 }
 163
 164 static void emit(struct pt_emit *emit,
 165                  const struct draw_vertex_info *vert_info,
 166                  const struct draw_prim_info *prim_info)
 167 {
 168    if (prim_info->linear) {
 169       draw_pt_emit_linear(emit, vert_info, prim_info);
 170    }
 171    else {
 172       draw_pt_emit(emit, vert_info, prim_info);
 173    }
 174 }
 175
 176
 177 static void draw_vertex_shader_run(struct draw_vertex_shader *vshader,
 178                                    const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
 179                                    unsigned const_size[PIPE_MAX_CONSTANT_BUFFERS],
 180                                    const struct draw_vertex_info *input_verts,
 181                                    struct draw_vertex_info *output_verts )
 182 {
 183    output_verts->vertex_size = input_verts->vertex_size;
 184    output_verts->stride = input_verts->vertex_size;
 185    output_verts->count = input_verts->count;
 186    output_verts->verts =
 187       (struct vertex_header *)MALLOC(output_verts->vertex_size *
 188                                      align(output_verts->count, 4));
 189
 190    vshader->run_linear(vshader,
 191                        (const float (*)[4])input_verts->verts->data,
 192                        (      float (*)[4])output_verts->verts->data,
 193                        constants,
 194                        const_size,
 195                        input_verts->count,
 196                        input_verts->vertex_size,
 197                        input_verts->vertex_size);
 198 }
 199
 200 static void fetch_pipeline_generic( struct draw_pt_middle_end *middle,
 201                                     const struct draw_fetch_info *fetch_info,
 202                                     const struct draw_prim_info *prim_info )
 203 {
 204    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
 205    struct draw_context *draw = fpme->draw;
 206    struct draw_vertex_shader *vshader = draw->vs.vertex_shader;
 207    struct draw_geometry_shader *gshader = draw->gs.geometry_shader;
 208    struct draw_prim_info gs_prim_info;
 209    struct draw_vertex_info fetched_vert_info;
 210    struct draw_vertex_info vs_vert_info;
 211    struct draw_vertex_info gs_vert_info;
 212    struct draw_vertex_info *vert_info;
 213    unsigned opt = fpme->opt;
 214
 215    fetched_vert_info.count = fetch_info->count;
 216    fetched_vert_info.vertex_size = fpme->vertex_size;
 217    fetched_vert_info.stride = fpme->vertex_size;
 218    fetched_vert_info.verts =
 219       (struct vertex_header *)MALLOC(fpme->vertex_size *
 220                                      align(fetch_info->count,  4));
 221    if (!fetched_vert_info.verts) {
 222       assert(0);
 223       return;
 224    }
 225
 226    /* Fetch into our vertex buffer.
 227     */
 228    fetch( fpme->fetch, fetch_info, (char *)fetched_vert_info.verts );
 229
 230    /* Finished with fetch:
 231     */
 232    fetch_info = NULL;
 233    vert_info = &fetched_vert_info;
 234
 235    /* Run the shader, note that this overwrites the data[] parts of
 236     * the pipeline verts.
 237     */
 238    if (fpme->opt & PT_SHADE) {
 239       draw_vertex_shader_run(vshader,
 240                              draw->pt.user.vs_constants,
 241                              draw->pt.user.vs_constants_size,
 242                              vert_info,
 243                              &vs_vert_info);
 244
 245       FREE(vert_info->verts);
 246       vert_info = &vs_vert_info;
 247    }
 248
 249    if ((fpme->opt & PT_SHADE) && gshader) {
 250       draw_geometry_shader_run(gshader,
 251                                draw->pt.user.gs_constants,
 252                                draw->pt.user.gs_constants_size,
 253                                vert_info,
 254                                prim_info,
 255                                &gs_vert_info,
 256                                &gs_prim_info);
 257
 258       FREE(vert_info->verts);
 259       vert_info = &gs_vert_info;
 260       prim_info = &gs_prim_info;
 261    }
 262
 263
 264    /* Stream output needs to be done before clipping.
 265     *
 266     * XXX: Stream output surely needs to respect the prim_info->elt
 267     *      lists.
 268     */
 269    draw_pt_so_emit( fpme->so_emit,
 270                     vert_info,
 271                     prim_info );
 272
 273    if (draw_pt_post_vs_run( fpme->post_vs,
 274                             vert_info ))
 275    {
 276       opt |= PT_PIPELINE;
 277    }
 278
 279    /* Do we need to run the pipeline?
 280     */
 281    if (opt & PT_PIPELINE) {
 282       pipeline( fpme,
 283                 vert_info,
 284                 prim_info );
 285    }
 286    else {
 287       emit( fpme->emit,
 288             vert_info,
 289             prim_info );
 290    }
 291    FREE(vert_info->verts);
 292 }
 293
 294 static void fetch_pipeline_run( struct draw_pt_middle_end *middle,
 295                                 const unsigned *fetch_elts,
 296                                 unsigned fetch_count,
 297                                 const ushort *draw_elts,
 298                                 unsigned draw_count,
 299                                 unsigned prim_flags )
 300 {
 301    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
 302    struct draw_fetch_info fetch_info;
 303    struct draw_prim_info prim_info;
 304
 305    fetch_info.linear = FALSE;
 306    fetch_info.start = 0;
 307    fetch_info.elts = fetch_elts;
 308    fetch_info.count = fetch_count;
 309
 310    prim_info.linear = FALSE;
 311    prim_info.start = 0;
 312    prim_info.count = draw_count;
 313    prim_info.elts = draw_elts;
 314    prim_info.prim = fpme->input_prim;
 315    prim_info.flags = prim_flags;
 316    prim_info.primitive_count = 1;
 317    prim_info.primitive_lengths = &draw_count;
 318
 319    fetch_pipeline_generic( middle, &fetch_info, &prim_info );
 320 }
 321
 322
 323 static void fetch_pipeline_linear_run( struct draw_pt_middle_end *middle,
 324                                        unsigned start,
 325                                        unsigned count,
 326                                        unsigned prim_flags)
 327 {
 328    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
 329    struct draw_fetch_info fetch_info;
 330    struct draw_prim_info prim_info;
 331
 332    fetch_info.linear = TRUE;
 333    fetch_info.start = start;
 334    fetch_info.count = count;
 335    fetch_info.elts = NULL;
 336
 337    prim_info.linear = TRUE;
 338    prim_info.start = 0;
 339    prim_info.count = count;
 340    prim_info.elts = NULL;
 341    prim_info.prim = fpme->input_prim;
 342    prim_info.flags = prim_flags;
 343    prim_info.primitive_count = 1;
 344    prim_info.primitive_lengths = &count;
 345
 346    fetch_pipeline_generic( middle, &fetch_info, &prim_info );
 347 }
 348
 349
 350
 351 static boolean fetch_pipeline_linear_run_elts( struct draw_pt_middle_end *middle,
 352                                                unsigned start,
 353                                                unsigned count,
 354                                                const ushort *draw_elts,
 355                                                unsigned draw_count,
 356                                                unsigned prim_flags )
 357 {
 358    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
 359    struct draw_fetch_info fetch_info;
 360    struct draw_prim_info prim_info;
 361
 362    fetch_info.linear = TRUE;
 363    fetch_info.start = start;
 364    fetch_info.count = count;
 365    fetch_info.elts = NULL;
 366
 367    prim_info.linear = FALSE;
 368    prim_info.start = 0;
 369    prim_info.count = draw_count;
 370    prim_info.elts = draw_elts;
 371    prim_info.prim = fpme->input_prim;
 372    prim_info.flags = prim_flags;
 373    prim_info.primitive_count = 1;
 374    prim_info.primitive_lengths = &draw_count;
 375
 376    fetch_pipeline_generic( middle, &fetch_info, &prim_info );
 377
 378    return TRUE;
 379 }
 380
 381
 382
 383 static void fetch_pipeline_finish( struct draw_pt_middle_end *middle )
 384 {
 385    /* nothing to do */
 386 }
 387
 388 static void fetch_pipeline_destroy( struct draw_pt_middle_end *middle )
 389 {
 390    struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
 391
 392    if (fpme->fetch)
 393       draw_pt_fetch_destroy( fpme->fetch );
 394
 395    if (fpme->emit)
 396       draw_pt_emit_destroy( fpme->emit );
 397
 398    if (fpme->so_emit)
 399       draw_pt_so_emit_destroy( fpme->so_emit );
 400
 401    if (fpme->post_vs)
 402       draw_pt_post_vs_destroy( fpme->post_vs );
 403
 404    FREE(middle);
 405 }
 406
 407
 408 struct draw_pt_middle_end *draw_pt_fetch_pipeline_or_emit( struct draw_context *draw )
 409 {
 410    struct fetch_pipeline_middle_end *fpme = CALLOC_STRUCT( fetch_pipeline_middle_end );
 411    if (!fpme)
 412       goto fail;
 413
 414    fpme->base.prepare        = fetch_pipeline_prepare;
 415    fpme->base.run            = fetch_pipeline_run;
 416    fpme->base.run_linear     = fetch_pipeline_linear_run;
 417    fpme->base.run_linear_elts = fetch_pipeline_linear_run_elts;
 418    fpme->base.finish         = fetch_pipeline_finish;
 419    fpme->base.destroy        = fetch_pipeline_destroy;
 420
 421    fpme->draw = draw;
 422
 423    fpme->fetch = draw_pt_fetch_create( draw );
 424    if (!fpme->fetch)
 425       goto fail;
 426
 427    fpme->post_vs = draw_pt_post_vs_create( draw );
 428    if (!fpme->post_vs)
 429       goto fail;
 430
 431    fpme->emit = draw_pt_emit_create( draw );
 432    if (!fpme->emit)
 433       goto fail;
 434
 435    fpme->so_emit = draw_pt_so_emit_create( draw );
 436    if (!fpme->so_emit)
 437       goto fail;
 438
 439    return &fpme->base;
 440
 441  fail:
 442    if (fpme)
 443       fetch_pipeline_destroy( &fpme->base );
 444
 445    return NULL;
 446 }