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