src/mesa/main/arbprogram.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2007  Brian Paul   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 "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /**
  26  * \file arbprogram.c
  27  * ARB_vertex/fragment_program state management functions.
  28  * \author Brian Paul
  29  */
  30
  31
  32 #include "main/glheader.h"
  33 #include "main/context.h"
  34 #include "main/hash.h"
  35 #include "main/imports.h"
  36 #include "main/macros.h"
  37 #include "main/mtypes.h"
  38 #include "main/arbprogram.h"
  39 #include "main/shaderapi.h"
  40 #include "main/state.h"
  41 #include "program/arbprogparse.h"
  42 #include "program/program.h"
  43 #include "program/prog_print.h"
  44
  45 static void
  46 flush_vertices_for_program_constants(struct gl_context *ctx, GLenum target)
  47 {
  48    uint64_t new_driver_state;
  49
  50    if (target == GL_FRAGMENT_PROGRAM_ARB) {
  51       new_driver_state =
  52          ctx->DriverFlags.NewShaderConstants[MESA_SHADER_FRAGMENT];
  53    } else {
  54       new_driver_state =
  55          ctx->DriverFlags.NewShaderConstants[MESA_SHADER_VERTEX];
  56    }
  57
  58    FLUSH_VERTICES(ctx, new_driver_state ? 0 : _NEW_PROGRAM_CONSTANTS);
  59    ctx->NewDriverState |= new_driver_state;
  60 }
  61
  62 /**
  63  * Bind a program (make it current)
  64  * \note Called from the GL API dispatcher by both glBindProgramNV
  65  * and glBindProgramARB.
  66  */
  67 void GLAPIENTRY
  68 _mesa_BindProgramARB(GLenum target, GLuint id)
  69 {
  70    struct gl_program *curProg, *newProg;
  71    GET_CURRENT_CONTEXT(ctx);
  72
  73    /* Error-check target and get curProg */
  74    if (target == GL_VERTEX_PROGRAM_ARB && ctx->Extensions.ARB_vertex_program) {
  75       curProg = ctx->VertexProgram.Current;
  76    }
  77    else if (target == GL_FRAGMENT_PROGRAM_ARB
  78             && ctx->Extensions.ARB_fragment_program) {
  79       curProg = ctx->FragmentProgram.Current;
  80    }
  81    else {
  82       _mesa_error(ctx, GL_INVALID_ENUM, "glBindProgramARB(target)");
  83       return;
  84    }
  85
  86    /*
  87     * Get pointer to new program to bind.
  88     * NOTE: binding to a non-existant program is not an error.
  89     * That's supposed to be caught in glBegin.
  90     */
  91    if (id == 0) {
  92       /* Bind a default program */
  93       newProg = NULL;
  94       if (target == GL_VERTEX_PROGRAM_ARB)
  95          newProg = ctx->Shared->DefaultVertexProgram;
  96       else
  97          newProg = ctx->Shared->DefaultFragmentProgram;
  98    }
  99    else {
 100       /* Bind a user program */
 101       newProg = _mesa_lookup_program(ctx, id);
 102       if (!newProg || newProg == &_mesa_DummyProgram) {
 103          /* allocate a new program now */
 104          newProg = ctx->Driver.NewProgram(ctx, target, id, true);
 105          if (!newProg) {
 106             _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindProgramARB");
 107             return;
 108          }
 109          _mesa_HashInsert(ctx->Shared->Programs, id, newProg);
 110       }
 111       else if (newProg->Target != target) {
 112          _mesa_error(ctx, GL_INVALID_OPERATION,
 113                      "glBindProgramARB(target mismatch)");
 114          return;
 115       }
 116    }
 117
 118    /** All error checking is complete now **/
 119
 120    if (curProg->Id == id) {
 121       /* binding same program - no change */
 122       return;
 123    }
 124
 125    /* signal new program (and its new constants) */
 126    FLUSH_VERTICES(ctx, _NEW_PROGRAM);
 127    flush_vertices_for_program_constants(ctx, target);
 128
 129    /* bind newProg */
 130    if (target == GL_VERTEX_PROGRAM_ARB) {
 131       _mesa_reference_program(ctx, &ctx->VertexProgram.Current, newProg);
 132    }
 133    else if (target == GL_FRAGMENT_PROGRAM_ARB) {
 134       _mesa_reference_program(ctx, &ctx->FragmentProgram.Current, newProg);
 135    }
 136
 137    _mesa_update_vertex_processing_mode(ctx);
 138
 139    /* Never null pointers */
 140    assert(ctx->VertexProgram.Current);
 141    assert(ctx->FragmentProgram.Current);
 142 }
 143
 144
 145 /**
 146  * Delete a list of programs.
 147  * \note Not compiled into display lists.
 148  * \note Called by both glDeleteProgramsNV and glDeleteProgramsARB.
 149  */
 150 void GLAPIENTRY
 151 _mesa_DeleteProgramsARB(GLsizei n, const GLuint *ids)
 152 {
 153    GLint i;
 154    GET_CURRENT_CONTEXT(ctx);
 155
 156    FLUSH_VERTICES(ctx, 0);
 157
 158    if (n < 0) {
 159       _mesa_error( ctx, GL_INVALID_VALUE, "glDeleteProgramsNV" );
 160       return;
 161    }
 162
 163    for (i = 0; i < n; i++) {
 164       if (ids[i] != 0) {
 165          struct gl_program *prog = _mesa_lookup_program(ctx, ids[i]);
 166          if (prog == &_mesa_DummyProgram) {
 167             _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
 168          }
 169          else if (prog) {
 170             /* Unbind program if necessary */
 171             switch (prog->Target) {
 172             case GL_VERTEX_PROGRAM_ARB:
 173                if (ctx->VertexProgram.Current &&
 174                    ctx->VertexProgram.Current->Id == ids[i]) {
 175                   /* unbind this currently bound program */
 176                   _mesa_BindProgramARB(prog->Target, 0);
 177                }
 178                break;
 179             case GL_FRAGMENT_PROGRAM_ARB:
 180                if (ctx->FragmentProgram.Current &&
 181                    ctx->FragmentProgram.Current->Id == ids[i]) {
 182                   /* unbind this currently bound program */
 183                   _mesa_BindProgramARB(prog->Target, 0);
 184                }
 185                break;
 186             default:
 187                _mesa_problem(ctx, "bad target in glDeleteProgramsNV");
 188                return;
 189             }
 190             /* The ID is immediately available for re-use now */
 191             _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
 192             _mesa_reference_program(ctx, &prog, NULL);
 193          }
 194       }
 195    }
 196 }
 197
 198
 199 /**
 200  * Generate a list of new program identifiers.
 201  * \note Not compiled into display lists.
 202  * \note Called by both glGenProgramsNV and glGenProgramsARB.
 203  */
 204 void GLAPIENTRY
 205 _mesa_GenProgramsARB(GLsizei n, GLuint *ids)
 206 {
 207    GLuint first;
 208    GLuint i;
 209    GET_CURRENT_CONTEXT(ctx);
 210
 211    if (n < 0) {
 212       _mesa_error(ctx, GL_INVALID_VALUE, "glGenPrograms");
 213       return;
 214    }
 215
 216    if (!ids)
 217       return;
 218
 219    _mesa_HashLockMutex(ctx->Shared->Programs);
 220
 221    first = _mesa_HashFindFreeKeyBlock(ctx->Shared->Programs, n);
 222
 223    /* Insert pointer to dummy program as placeholder */
 224    for (i = 0; i < (GLuint) n; i++) {
 225       _mesa_HashInsertLocked(ctx->Shared->Programs, first + i,
 226                              &_mesa_DummyProgram);
 227    }
 228
 229    _mesa_HashUnlockMutex(ctx->Shared->Programs);
 230
 231    /* Return the program names */
 232    for (i = 0; i < (GLuint) n; i++) {
 233       ids[i] = first + i;
 234    }
 235 }
 236
 237
 238 /**
 239  * Determine if id names a vertex or fragment program.
 240  * \note Not compiled into display lists.
 241  * \note Called from both glIsProgramNV and glIsProgramARB.
 242  * \param id is the program identifier
 243  * \return GL_TRUE if id is a program, else GL_FALSE.
 244  */
 245 GLboolean GLAPIENTRY
 246 _mesa_IsProgramARB(GLuint id)
 247 {
 248    struct gl_program *prog = NULL;
 249    GET_CURRENT_CONTEXT(ctx);
 250    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 251
 252    if (id == 0)
 253       return GL_FALSE;
 254
 255    prog = _mesa_lookup_program(ctx, id);
 256    if (prog && (prog != &_mesa_DummyProgram))
 257       return GL_TRUE;
 258    else
 259       return GL_FALSE;
 260 }
 261
 262 static GLboolean
 263 get_local_param_pointer(struct gl_context *ctx, const char *func,
 264                         GLenum target, GLuint index, GLfloat **param)
 265 {
 266    struct gl_program *prog;
 267    GLuint maxParams;
 268
 269    if (target == GL_VERTEX_PROGRAM_ARB
 270        && ctx->Extensions.ARB_vertex_program) {
 271       prog = ctx->VertexProgram.Current;
 272       maxParams = ctx->Const.Program[MESA_SHADER_VERTEX].MaxLocalParams;
 273    }
 274    else if (target == GL_FRAGMENT_PROGRAM_ARB
 275             && ctx->Extensions.ARB_fragment_program) {
 276       prog = ctx->FragmentProgram.Current;
 277       maxParams = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxLocalParams;
 278    }
 279    else {
 280       _mesa_error(ctx, GL_INVALID_ENUM,
 281                   "%s(target)", func);
 282       return GL_FALSE;
 283    }
 284
 285    if (index >= maxParams) {
 286       _mesa_error(ctx, GL_INVALID_VALUE, "%s(index)", func);
 287       return GL_FALSE;
 288    }
 289
 290    if (!prog->arb.LocalParams) {
 291       prog->arb.LocalParams = rzalloc_array_size(prog, sizeof(float[4]),
 292                                              maxParams);
 293       if (!prog->arb.LocalParams)
 294          return GL_FALSE;
 295    }
 296
 297    *param = prog->arb.LocalParams[index];
 298    return GL_TRUE;
 299 }
 300
 301
 302 static GLboolean
 303 get_env_param_pointer(struct gl_context *ctx, const char *func,
 304                       GLenum target, GLuint index, GLfloat **param)
 305 {
 306    if (target == GL_FRAGMENT_PROGRAM_ARB
 307        && ctx->Extensions.ARB_fragment_program) {
 308       if (index >= ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxEnvParams) {
 309          _mesa_error(ctx, GL_INVALID_VALUE, "%s(index)", func);
 310          return GL_FALSE;
 311       }
 312       *param = ctx->FragmentProgram.Parameters[index];
 313       return GL_TRUE;
 314    }
 315    else if (target == GL_VERTEX_PROGRAM_ARB &&
 316             ctx->Extensions.ARB_vertex_program) {
 317       if (index >= ctx->Const.Program[MESA_SHADER_VERTEX].MaxEnvParams) {
 318          _mesa_error(ctx, GL_INVALID_VALUE, "%s(index)", func);
 319          return GL_FALSE;
 320       }
 321       *param = ctx->VertexProgram.Parameters[index];
 322       return GL_TRUE;
 323    } else {
 324       _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
 325       return GL_FALSE;
 326    }
 327 }
 328
 329 void GLAPIENTRY
 330 _mesa_ProgramStringARB(GLenum target, GLenum format, GLsizei len,
 331                        const GLvoid *string)
 332 {
 333    struct gl_program *prog;
 334    bool failed;
 335    GET_CURRENT_CONTEXT(ctx);
 336
 337    FLUSH_VERTICES(ctx, _NEW_PROGRAM);
 338
 339    if (!ctx->Extensions.ARB_vertex_program
 340        && !ctx->Extensions.ARB_fragment_program) {
 341       _mesa_error(ctx, GL_INVALID_OPERATION, "glProgramStringARB()");
 342       return;
 343    }
 344
 345    if (format != GL_PROGRAM_FORMAT_ASCII_ARB) {
 346       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramStringARB(format)");
 347       return;
 348    }
 349
 350    if (target == GL_VERTEX_PROGRAM_ARB && ctx->Extensions.ARB_vertex_program) {
 351       prog = ctx->VertexProgram.Current;
 352       _mesa_parse_arb_vertex_program(ctx, target, string, len, prog);
 353    }
 354    else if (target == GL_FRAGMENT_PROGRAM_ARB
 355             && ctx->Extensions.ARB_fragment_program) {
 356       prog = ctx->FragmentProgram.Current;
 357       _mesa_parse_arb_fragment_program(ctx, target, string, len, prog);
 358    }
 359    else {
 360       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramStringARB(target)");
 361       return;
 362    }
 363
 364    failed = ctx->Program.ErrorPos != -1;
 365
 366    if (!failed) {
 367       /* finally, give the program to the driver for translation/checking */
 368       if (!ctx->Driver.ProgramStringNotify(ctx, target, prog)) {
 369          failed = true;
 370          _mesa_error(ctx, GL_INVALID_OPERATION,
 371                      "glProgramStringARB(rejected by driver");
 372       }
 373    }
 374
 375    _mesa_update_vertex_processing_mode(ctx);
 376
 377    if (ctx->_Shader->Flags & GLSL_DUMP) {
 378       const char *shader_type =
 379          target == GL_FRAGMENT_PROGRAM_ARB ? "fragment" : "vertex";
 380
 381       fprintf(stderr, "ARB_%s_program source for program %d:\n",
 382               shader_type, prog->Id);
 383       fprintf(stderr, "%s\n", (const char *) string);
 384
 385       if (failed) {
 386          fprintf(stderr, "ARB_%s_program %d failed to compile.\n",
 387                  shader_type, prog->Id);
 388       } else {
 389          fprintf(stderr, "Mesa IR for ARB_%s_program %d:\n",
 390                  shader_type, prog->Id);
 391          _mesa_print_program(prog);
 392          fprintf(stderr, "\n");
 393       }
 394       fflush(stderr);
 395    }
 396
 397    /* Capture vp-*.shader_test/fp-*.shader_test files. */
 398    const char *capture_path = _mesa_get_shader_capture_path();
 399    if (capture_path != NULL) {
 400       FILE *file;
 401       const char *shader_type =
 402          target == GL_FRAGMENT_PROGRAM_ARB ? "fragment" : "vertex";
 403       char *filename =
 404          ralloc_asprintf(NULL, "%s/%cp-%u.shader_test",
 405                          capture_path, shader_type[0], prog->Id);
 406
 407       file = fopen(filename, "w");
 408       if (file) {
 409          fprintf(file,
 410                  "[require]\nGL_ARB_%s_program\n\n[%s program]\n%s\n",
 411                  shader_type, shader_type, (const char *) string);
 412          fclose(file);
 413       } else {
 414          _mesa_warning(ctx, "Failed to open %s", filename);
 415       }
 416       ralloc_free(filename);
 417    }
 418 }
 419
 420
 421 /**
 422  * Set a program env parameter register.
 423  * \note Called from the GL API dispatcher.
 424  */
 425 void GLAPIENTRY
 426 _mesa_ProgramEnvParameter4dARB(GLenum target, GLuint index,
 427                                GLdouble x, GLdouble y, GLdouble z, GLdouble w)
 428 {
 429    _mesa_ProgramEnvParameter4fARB(target, index, (GLfloat) x, (GLfloat) y,
 430                                   (GLfloat) z, (GLfloat) w);
 431 }
 432
 433
 434 /**
 435  * Set a program env parameter register.
 436  * \note Called from the GL API dispatcher.
 437  */
 438 void GLAPIENTRY
 439 _mesa_ProgramEnvParameter4dvARB(GLenum target, GLuint index,
 440                                 const GLdouble *params)
 441 {
 442    _mesa_ProgramEnvParameter4fARB(target, index, (GLfloat) params[0],
 443                                   (GLfloat) params[1], (GLfloat) params[2],
 444                                   (GLfloat) params[3]);
 445 }
 446
 447
 448 /**
 449  * Set a program env parameter register.
 450  * \note Called from the GL API dispatcher.
 451  */
 452 void GLAPIENTRY
 453 _mesa_ProgramEnvParameter4fARB(GLenum target, GLuint index,
 454                                GLfloat x, GLfloat y, GLfloat z, GLfloat w)
 455 {
 456    GLfloat *param;
 457
 458    GET_CURRENT_CONTEXT(ctx);
 459
 460    flush_vertices_for_program_constants(ctx, target);
 461
 462    if (get_env_param_pointer(ctx, "glProgramEnvParameter",
 463                              target, index, &param)) {
 464       ASSIGN_4V(param, x, y, z, w);
 465    }
 466 }
 467
 468
 469
 470 /**
 471  * Set a program env parameter register.
 472  * \note Called from the GL API dispatcher.
 473  */
 474 void GLAPIENTRY
 475 _mesa_ProgramEnvParameter4fvARB(GLenum target, GLuint index,
 476                                 const GLfloat *params)
 477 {
 478    GLfloat *param;
 479
 480    GET_CURRENT_CONTEXT(ctx);
 481
 482    flush_vertices_for_program_constants(ctx, target);
 483
 484    if (get_env_param_pointer(ctx, "glProgramEnvParameter4fv",
 485                               target, index, &param)) {
 486       memcpy(param, params, 4 * sizeof(GLfloat));
 487    }
 488 }
 489
 490
 491 void GLAPIENTRY
 492 _mesa_ProgramEnvParameters4fvEXT(GLenum target, GLuint index, GLsizei count,
 493                                  const GLfloat *params)
 494 {
 495    GET_CURRENT_CONTEXT(ctx);
 496    GLfloat * dest;
 497
 498    flush_vertices_for_program_constants(ctx, target);
 499
 500    if (count <= 0) {
 501       _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(count)");
 502    }
 503
 504    if (target == GL_FRAGMENT_PROGRAM_ARB
 505        && ctx->Extensions.ARB_fragment_program) {
 506       if ((index + count) > ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxEnvParams) {
 507          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(index + count)");
 508          return;
 509       }
 510       dest = ctx->FragmentProgram.Parameters[index];
 511    }
 512    else if (target == GL_VERTEX_PROGRAM_ARB
 513        && ctx->Extensions.ARB_vertex_program) {
 514       if ((index + count) > ctx->Const.Program[MESA_SHADER_VERTEX].MaxEnvParams) {
 515          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(index + count)");
 516          return;
 517       }
 518       dest = ctx->VertexProgram.Parameters[index];
 519    }
 520    else {
 521       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramEnvParameters4fv(target)");
 522       return;
 523    }
 524
 525    memcpy(dest, params, count * 4 * sizeof(GLfloat));
 526 }
 527
 528
 529 void GLAPIENTRY
 530 _mesa_GetProgramEnvParameterdvARB(GLenum target, GLuint index,
 531                                   GLdouble *params)
 532 {
 533    GET_CURRENT_CONTEXT(ctx);
 534    GLfloat *fparam;
 535
 536    if (get_env_param_pointer(ctx, "glGetProgramEnvParameterdv",
 537                              target, index, &fparam)) {
 538       COPY_4V(params, fparam);
 539    }
 540 }
 541
 542
 543 void GLAPIENTRY
 544 _mesa_GetProgramEnvParameterfvARB(GLenum target, GLuint index,
 545                                   GLfloat *params)
 546 {
 547    GLfloat *param;
 548
 549    GET_CURRENT_CONTEXT(ctx);
 550
 551    if (get_env_param_pointer(ctx, "glGetProgramEnvParameterfv",
 552                               target, index, &param)) {
 553       COPY_4V(params, param);
 554    }
 555 }
 556
 557
 558 void GLAPIENTRY
 559 _mesa_ProgramLocalParameter4fARB(GLenum target, GLuint index,
 560                                  GLfloat x, GLfloat y, GLfloat z, GLfloat w)
 561 {
 562    GET_CURRENT_CONTEXT(ctx);
 563    GLfloat *param;
 564
 565    flush_vertices_for_program_constants(ctx, target);
 566
 567    if (get_local_param_pointer(ctx, "glProgramLocalParameterARB",
 568                                target, index, &param)) {
 569       assert(index < MAX_PROGRAM_LOCAL_PARAMS);
 570       ASSIGN_4V(param, x, y, z, w);
 571    }
 572 }
 573
 574
 575 void GLAPIENTRY
 576 _mesa_ProgramLocalParameter4fvARB(GLenum target, GLuint index,
 577                                   const GLfloat *params)
 578 {
 579    _mesa_ProgramLocalParameter4fARB(target, index, params[0], params[1],
 580                                     params[2], params[3]);
 581 }
 582
 583
 584 void GLAPIENTRY
 585 _mesa_ProgramLocalParameters4fvEXT(GLenum target, GLuint index, GLsizei count,
 586                                    const GLfloat *params)
 587 {
 588    GET_CURRENT_CONTEXT(ctx);
 589    GLfloat *dest;
 590
 591    flush_vertices_for_program_constants(ctx, target);
 592
 593    if (count <= 0) {
 594       _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameters4fv(count)");
 595    }
 596
 597    if (get_local_param_pointer(ctx, "glProgramLocalParameters4fvEXT",
 598                                target, index, &dest)) {
 599       GLuint maxParams = target == GL_FRAGMENT_PROGRAM_ARB ?
 600          ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxLocalParams :
 601          ctx->Const.Program[MESA_SHADER_VERTEX].MaxLocalParams;
 602
 603       if ((index + count) > maxParams) {
 604          _mesa_error(ctx, GL_INVALID_VALUE,
 605                      "glProgramLocalParameters4fvEXT(index + count)");
 606          return;
 607       }
 608
 609       memcpy(dest, params, count * 4 * sizeof(GLfloat));
 610    }
 611 }
 612
 613
 614 void GLAPIENTRY
 615 _mesa_ProgramLocalParameter4dARB(GLenum target, GLuint index,
 616                                  GLdouble x, GLdouble y,
 617                                  GLdouble z, GLdouble w)
 618 {
 619    _mesa_ProgramLocalParameter4fARB(target, index, (GLfloat) x, (GLfloat) y,
 620                                     (GLfloat) z, (GLfloat) w);
 621 }
 622
 623
 624 void GLAPIENTRY
 625 _mesa_ProgramLocalParameter4dvARB(GLenum target, GLuint index,
 626                                   const GLdouble *params)
 627 {
 628    _mesa_ProgramLocalParameter4fARB(target, index,
 629                                     (GLfloat) params[0], (GLfloat) params[1],
 630                                     (GLfloat) params[2], (GLfloat) params[3]);
 631 }
 632
 633
 634 void GLAPIENTRY
 635 _mesa_GetProgramLocalParameterfvARB(GLenum target, GLuint index,
 636                                     GLfloat *params)
 637 {
 638    GLfloat *param;
 639    GET_CURRENT_CONTEXT(ctx);
 640
 641    if (get_local_param_pointer(ctx, "glProgramLocalParameters4fvEXT",
 642                                 target, index, &param)) {
 643       COPY_4V(params, param);
 644    }
 645 }
 646
 647
 648 void GLAPIENTRY
 649 _mesa_GetProgramLocalParameterdvARB(GLenum target, GLuint index,
 650                                     GLdouble *params)
 651 {
 652    GLfloat *param;
 653    GET_CURRENT_CONTEXT(ctx);
 654
 655    if (get_local_param_pointer(ctx, "glProgramLocalParameters4fvEXT",
 656                                 target, index, &param)) {
 657       COPY_4V(params, param);
 658    }
 659 }
 660
 661
 662 void GLAPIENTRY
 663 _mesa_GetProgramivARB(GLenum target, GLenum pname, GLint *params)
 664 {
 665    const struct gl_program_constants *limits;
 666    struct gl_program *prog;
 667    GET_CURRENT_CONTEXT(ctx);
 668
 669    if (target == GL_VERTEX_PROGRAM_ARB
 670        && ctx->Extensions.ARB_vertex_program) {
 671       prog = ctx->VertexProgram.Current;
 672       limits = &ctx->Const.Program[MESA_SHADER_VERTEX];
 673    }
 674    else if (target == GL_FRAGMENT_PROGRAM_ARB
 675             && ctx->Extensions.ARB_fragment_program) {
 676       prog = ctx->FragmentProgram.Current;
 677       limits = &ctx->Const.Program[MESA_SHADER_FRAGMENT];
 678    }
 679    else {
 680       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(target)");
 681       return;
 682    }
 683
 684    assert(prog);
 685    assert(limits);
 686
 687    /* Queries supported for both vertex and fragment programs */
 688    switch (pname) {
 689       case GL_PROGRAM_LENGTH_ARB:
 690          *params
 691             = prog->String ? (GLint) strlen((char *) prog->String) : 0;
 692          return;
 693       case GL_PROGRAM_FORMAT_ARB:
 694          *params = prog->Format;
 695          return;
 696       case GL_PROGRAM_BINDING_ARB:
 697          *params = prog->Id;
 698          return;
 699       case GL_PROGRAM_INSTRUCTIONS_ARB:
 700          *params = prog->arb.NumInstructions;
 701          return;
 702       case GL_MAX_PROGRAM_INSTRUCTIONS_ARB:
 703          *params = limits->MaxInstructions;
 704          return;
 705       case GL_PROGRAM_NATIVE_INSTRUCTIONS_ARB:
 706          *params = prog->arb.NumNativeInstructions;
 707          return;
 708       case GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB:
 709          *params = limits->MaxNativeInstructions;
 710          return;
 711       case GL_PROGRAM_TEMPORARIES_ARB:
 712          *params = prog->arb.NumTemporaries;
 713          return;
 714       case GL_MAX_PROGRAM_TEMPORARIES_ARB:
 715          *params = limits->MaxTemps;
 716          return;
 717       case GL_PROGRAM_NATIVE_TEMPORARIES_ARB:
 718          *params = prog->arb.NumNativeTemporaries;
 719          return;
 720       case GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB:
 721          *params = limits->MaxNativeTemps;
 722          return;
 723       case GL_PROGRAM_PARAMETERS_ARB:
 724          *params = prog->arb.NumParameters;
 725          return;
 726       case GL_MAX_PROGRAM_PARAMETERS_ARB:
 727          *params = limits->MaxParameters;
 728          return;
 729       case GL_PROGRAM_NATIVE_PARAMETERS_ARB:
 730          *params = prog->arb.NumNativeParameters;
 731          return;
 732       case GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB:
 733          *params = limits->MaxNativeParameters;
 734          return;
 735       case GL_PROGRAM_ATTRIBS_ARB:
 736          *params = prog->arb.NumAttributes;
 737          return;
 738       case GL_MAX_PROGRAM_ATTRIBS_ARB:
 739          *params = limits->MaxAttribs;
 740          return;
 741       case GL_PROGRAM_NATIVE_ATTRIBS_ARB:
 742          *params = prog->arb.NumNativeAttributes;
 743          return;
 744       case GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB:
 745          *params = limits->MaxNativeAttribs;
 746          return;
 747       case GL_PROGRAM_ADDRESS_REGISTERS_ARB:
 748          *params = prog->arb.NumAddressRegs;
 749          return;
 750       case GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB:
 751          *params = limits->MaxAddressRegs;
 752          return;
 753       case GL_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB:
 754          *params = prog->arb.NumNativeAddressRegs;
 755          return;
 756       case GL_MAX_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB:
 757          *params = limits->MaxNativeAddressRegs;
 758          return;
 759       case GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB:
 760          *params = limits->MaxLocalParams;
 761          return;
 762       case GL_MAX_PROGRAM_ENV_PARAMETERS_ARB:
 763          *params = limits->MaxEnvParams;
 764          return;
 765       case GL_PROGRAM_UNDER_NATIVE_LIMITS_ARB:
 766          /*
 767           * XXX we may not really need a driver callback here.
 768           * If the number of native instructions, registers, etc. used
 769           * are all below the maximums, we could return true.
 770           * The spec says that even if this query returns true, there's
 771           * no guarantee that the program will run in hardware.
 772           */
 773          if (prog->Id == 0) {
 774             /* default/null program */
 775             *params = GL_FALSE;
 776          }
 777          else if (ctx->Driver.IsProgramNative) {
 778             /* ask the driver */
 779             *params = ctx->Driver.IsProgramNative( ctx, target, prog );
 780          }
 781          else {
 782             /* probably running in software */
 783             *params = GL_TRUE;
 784          }
 785          return;
 786       default:
 787          /* continue with fragment-program only queries below */
 788          break;
 789    }
 790
 791    /*
 792     * The following apply to fragment programs only (at this time)
 793     */
 794    if (target == GL_FRAGMENT_PROGRAM_ARB) {
 795       const struct gl_program *fp = ctx->FragmentProgram.Current;
 796       switch (pname) {
 797          case GL_PROGRAM_ALU_INSTRUCTIONS_ARB:
 798             *params = fp->arb.NumNativeAluInstructions;
 799             return;
 800          case GL_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB:
 801             *params = fp->arb.NumAluInstructions;
 802             return;
 803          case GL_PROGRAM_TEX_INSTRUCTIONS_ARB:
 804             *params = fp->arb.NumTexInstructions;
 805             return;
 806          case GL_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB:
 807             *params = fp->arb.NumNativeTexInstructions;
 808             return;
 809          case GL_PROGRAM_TEX_INDIRECTIONS_ARB:
 810             *params = fp->arb.NumTexIndirections;
 811             return;
 812          case GL_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB:
 813             *params = fp->arb.NumNativeTexIndirections;
 814             return;
 815          case GL_MAX_PROGRAM_ALU_INSTRUCTIONS_ARB:
 816             *params = limits->MaxAluInstructions;
 817             return;
 818          case GL_MAX_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB:
 819             *params = limits->MaxNativeAluInstructions;
 820             return;
 821          case GL_MAX_PROGRAM_TEX_INSTRUCTIONS_ARB:
 822             *params = limits->MaxTexInstructions;
 823             return;
 824          case GL_MAX_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB:
 825             *params = limits->MaxNativeTexInstructions;
 826             return;
 827          case GL_MAX_PROGRAM_TEX_INDIRECTIONS_ARB:
 828             *params = limits->MaxTexIndirections;
 829             return;
 830          case GL_MAX_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB:
 831             *params = limits->MaxNativeTexIndirections;
 832             return;
 833          default:
 834             _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(pname)");
 835             return;
 836       }
 837    } else {
 838       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(pname)");
 839       return;
 840    }
 841 }
 842
 843
 844 void GLAPIENTRY
 845 _mesa_GetProgramStringARB(GLenum target, GLenum pname, GLvoid *string)
 846 {
 847    const struct gl_program *prog;
 848    char *dst = (char *) string;
 849    GET_CURRENT_CONTEXT(ctx);
 850
 851    if (target == GL_VERTEX_PROGRAM_ARB) {
 852       prog = ctx->VertexProgram.Current;
 853    }
 854    else if (target == GL_FRAGMENT_PROGRAM_ARB) {
 855       prog = ctx->FragmentProgram.Current;
 856    }
 857    else {
 858       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramStringARB(target)");
 859       return;
 860    }
 861
 862    assert(prog);
 863
 864    if (pname != GL_PROGRAM_STRING_ARB) {
 865       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramStringARB(pname)");
 866       return;
 867    }
 868
 869    if (prog->String)
 870       memcpy(dst, prog->String, strlen((char *) prog->String));
 871    else
 872       *dst = '\0';
 873 }