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 = calloc(maxParams, sizeof(float[4]));
 279       if (!prog->LocalParams)
 280          return GL_FALSE;
 281    }
 282
 283    *param = prog->LocalParams[index];
 284    return GL_TRUE;
 285 }
 286
 287
 288 static GLboolean
 289 get_env_param_pointer(struct gl_context *ctx, const char *func,
 290                       GLenum target, GLuint index, GLfloat **param)
 291 {
 292    if (target == GL_FRAGMENT_PROGRAM_ARB
 293        && ctx->Extensions.ARB_fragment_program) {
 294       if (index >= ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxEnvParams) {
 295          _mesa_error(ctx, GL_INVALID_VALUE, "%s(index)", func);
 296          return GL_FALSE;
 297       }
 298       *param = ctx->FragmentProgram.Parameters[index];
 299       return GL_TRUE;
 300    }
 301    else if (target == GL_VERTEX_PROGRAM_ARB &&
 302             ctx->Extensions.ARB_vertex_program) {
 303       if (index >= ctx->Const.Program[MESA_SHADER_VERTEX].MaxEnvParams) {
 304          _mesa_error(ctx, GL_INVALID_VALUE, "%s(index)", func);
 305          return GL_FALSE;
 306       }
 307       *param = ctx->VertexProgram.Parameters[index];
 308       return GL_TRUE;
 309    } else {
 310       _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
 311       return GL_FALSE;
 312    }
 313 }
 314
 315 void GLAPIENTRY
 316 _mesa_ProgramStringARB(GLenum target, GLenum format, GLsizei len,
 317                        const GLvoid *string)
 318 {
 319    struct gl_program *prog;
 320    bool failed;
 321    GET_CURRENT_CONTEXT(ctx);
 322
 323    FLUSH_VERTICES(ctx, _NEW_PROGRAM);
 324
 325    if (!ctx->Extensions.ARB_vertex_program
 326        && !ctx->Extensions.ARB_fragment_program) {
 327       _mesa_error(ctx, GL_INVALID_OPERATION, "glProgramStringARB()");
 328       return;
 329    }
 330
 331    if (format != GL_PROGRAM_FORMAT_ASCII_ARB) {
 332       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramStringARB(format)");
 333       return;
 334    }
 335
 336    if (target == GL_VERTEX_PROGRAM_ARB && ctx->Extensions.ARB_vertex_program) {
 337       prog = ctx->VertexProgram.Current;
 338       _mesa_parse_arb_vertex_program(ctx, target, string, len, prog);
 339    }
 340    else if (target == GL_FRAGMENT_PROGRAM_ARB
 341             && ctx->Extensions.ARB_fragment_program) {
 342       prog = ctx->FragmentProgram.Current;
 343       _mesa_parse_arb_fragment_program(ctx, target, string, len, prog);
 344    }
 345    else {
 346       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramStringARB(target)");
 347       return;
 348    }
 349
 350    failed = ctx->Program.ErrorPos != -1;
 351
 352    if (!failed) {
 353       /* finally, give the program to the driver for translation/checking */
 354       if (!ctx->Driver.ProgramStringNotify(ctx, target, prog)) {
 355          failed = true;
 356          _mesa_error(ctx, GL_INVALID_OPERATION,
 357                      "glProgramStringARB(rejected by driver");
 358       }
 359    }
 360
 361    if (ctx->_Shader->Flags & GLSL_DUMP) {
 362       const char *shader_type =
 363          target == GL_FRAGMENT_PROGRAM_ARB ? "fragment" : "vertex";
 364
 365       fprintf(stderr, "ARB_%s_program source for program %d:\n",
 366               shader_type, prog->Id);
 367       fprintf(stderr, "%s\n", (const char *) string);
 368
 369       if (failed) {
 370          fprintf(stderr, "ARB_%s_program %d failed to compile.\n",
 371                  shader_type, prog->Id);
 372       } else {
 373          fprintf(stderr, "Mesa IR for ARB_%s_program %d:\n",
 374                  shader_type, prog->Id);
 375          _mesa_print_program(prog);
 376          fprintf(stderr, "\n");
 377       }
 378       fflush(stderr);
 379    }
 380
 381    /* Capture vp-*.shader_test/fp-*.shader_test files. */
 382    const char *capture_path = _mesa_get_shader_capture_path();
 383    if (capture_path != NULL) {
 384       FILE *file;
 385       char filename[PATH_MAX];
 386       const char *shader_type =
 387          target == GL_FRAGMENT_PROGRAM_ARB ? "fragment" : "vertex";
 388
 389       _mesa_snprintf(filename, sizeof(filename), "%s/%cp-%u.shader_test",
 390                      capture_path, shader_type[0], prog->Id);
 391       file = fopen(filename, "w");
 392       if (file) {
 393          fprintf(file,
 394                  "[require]\nGL_ARB_%s_program\n\n[%s program]\n%s\n",
 395                  shader_type, shader_type, (const char *) string);
 396          fclose(file);
 397       } else {
 398          _mesa_warning(ctx, "Failed to open %s", filename);
 399       }
 400    }
 401 }
 402
 403
 404 /**
 405  * Set a program env parameter register.
 406  * \note Called from the GL API dispatcher.
 407  */
 408 void GLAPIENTRY
 409 _mesa_ProgramEnvParameter4dARB(GLenum target, GLuint index,
 410                                GLdouble x, GLdouble y, GLdouble z, GLdouble w)
 411 {
 412    _mesa_ProgramEnvParameter4fARB(target, index, (GLfloat) x, (GLfloat) y,
 413                                   (GLfloat) z, (GLfloat) w);
 414 }
 415
 416
 417 /**
 418  * Set a program env parameter register.
 419  * \note Called from the GL API dispatcher.
 420  */
 421 void GLAPIENTRY
 422 _mesa_ProgramEnvParameter4dvARB(GLenum target, GLuint index,
 423                                 const GLdouble *params)
 424 {
 425    _mesa_ProgramEnvParameter4fARB(target, index, (GLfloat) params[0],
 426                                   (GLfloat) params[1], (GLfloat) params[2],
 427                                   (GLfloat) params[3]);
 428 }
 429
 430
 431 /**
 432  * Set a program env parameter register.
 433  * \note Called from the GL API dispatcher.
 434  */
 435 void GLAPIENTRY
 436 _mesa_ProgramEnvParameter4fARB(GLenum target, GLuint index,
 437                                GLfloat x, GLfloat y, GLfloat z, GLfloat w)
 438 {
 439    GLfloat *param;
 440
 441    GET_CURRENT_CONTEXT(ctx);
 442
 443    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 444
 445    if (get_env_param_pointer(ctx, "glProgramEnvParameter",
 446                              target, index, &param)) {
 447       ASSIGN_4V(param, x, y, z, w);
 448    }
 449 }
 450
 451
 452
 453 /**
 454  * Set a program env parameter register.
 455  * \note Called from the GL API dispatcher.
 456  */
 457 void GLAPIENTRY
 458 _mesa_ProgramEnvParameter4fvARB(GLenum target, GLuint index,
 459                                 const GLfloat *params)
 460 {
 461    GLfloat *param;
 462
 463    GET_CURRENT_CONTEXT(ctx);
 464
 465    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 466
 467    if (get_env_param_pointer(ctx, "glProgramEnvParameter4fv",
 468                               target, index, &param)) {
 469       memcpy(param, params, 4 * sizeof(GLfloat));
 470    }
 471 }
 472
 473
 474 void GLAPIENTRY
 475 _mesa_ProgramEnvParameters4fvEXT(GLenum target, GLuint index, GLsizei count,
 476                                  const GLfloat *params)
 477 {
 478    GET_CURRENT_CONTEXT(ctx);
 479    GLfloat * dest;
 480
 481    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 482
 483    if (count <= 0) {
 484       _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(count)");
 485    }
 486
 487    if (target == GL_FRAGMENT_PROGRAM_ARB
 488        && ctx->Extensions.ARB_fragment_program) {
 489       if ((index + count) > ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxEnvParams) {
 490          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(index + count)");
 491          return;
 492       }
 493       dest = ctx->FragmentProgram.Parameters[index];
 494    }
 495    else if (target == GL_VERTEX_PROGRAM_ARB
 496        && ctx->Extensions.ARB_vertex_program) {
 497       if ((index + count) > ctx->Const.Program[MESA_SHADER_VERTEX].MaxEnvParams) {
 498          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(index + count)");
 499          return;
 500       }
 501       dest = ctx->VertexProgram.Parameters[index];
 502    }
 503    else {
 504       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramEnvParameters4fv(target)");
 505       return;
 506    }
 507
 508    memcpy(dest, params, count * 4 * sizeof(GLfloat));
 509 }
 510
 511
 512 void GLAPIENTRY
 513 _mesa_GetProgramEnvParameterdvARB(GLenum target, GLuint index,
 514                                   GLdouble *params)
 515 {
 516    GET_CURRENT_CONTEXT(ctx);
 517    GLfloat *fparam;
 518
 519    if (get_env_param_pointer(ctx, "glGetProgramEnvParameterdv",
 520                              target, index, &fparam)) {
 521       COPY_4V(params, fparam);
 522    }
 523 }
 524
 525
 526 void GLAPIENTRY
 527 _mesa_GetProgramEnvParameterfvARB(GLenum target, GLuint index,
 528                                   GLfloat *params)
 529 {
 530    GLfloat *param;
 531
 532    GET_CURRENT_CONTEXT(ctx);
 533
 534    if (get_env_param_pointer(ctx, "glGetProgramEnvParameterfv",
 535                               target, index, &param)) {
 536       COPY_4V(params, param);
 537    }
 538 }
 539
 540
 541 void GLAPIENTRY
 542 _mesa_ProgramLocalParameter4fARB(GLenum target, GLuint index,
 543                                  GLfloat x, GLfloat y, GLfloat z, GLfloat w)
 544 {
 545    GET_CURRENT_CONTEXT(ctx);
 546    GLfloat *param;
 547
 548    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 549
 550    if (get_local_param_pointer(ctx, "glProgramLocalParameterARB",
 551                                target, index, &param)) {
 552       assert(index < MAX_PROGRAM_LOCAL_PARAMS);
 553       ASSIGN_4V(param, x, y, z, w);
 554    }
 555 }
 556
 557
 558 void GLAPIENTRY
 559 _mesa_ProgramLocalParameter4fvARB(GLenum target, GLuint index,
 560                                   const GLfloat *params)
 561 {
 562    _mesa_ProgramLocalParameter4fARB(target, index, params[0], params[1],
 563                                     params[2], params[3]);
 564 }
 565
 566
 567 void GLAPIENTRY
 568 _mesa_ProgramLocalParameters4fvEXT(GLenum target, GLuint index, GLsizei count,
 569                                    const GLfloat *params)
 570 {
 571    GET_CURRENT_CONTEXT(ctx);
 572    GLfloat *dest;
 573
 574    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 575
 576    if (count <= 0) {
 577       _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameters4fv(count)");
 578    }
 579
 580    if (get_local_param_pointer(ctx, "glProgramLocalParameters4fvEXT",
 581                                target, index, &dest)) {
 582       GLuint maxParams = target == GL_FRAGMENT_PROGRAM_ARB ?
 583          ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxLocalParams :
 584          ctx->Const.Program[MESA_SHADER_VERTEX].MaxLocalParams;
 585
 586       if ((index + count) > maxParams) {
 587          _mesa_error(ctx, GL_INVALID_VALUE,
 588                      "glProgramLocalParameters4fvEXT(index + count)");
 589          return;
 590       }
 591
 592       memcpy(dest, params, count * 4 * sizeof(GLfloat));
 593    }
 594 }
 595
 596
 597 void GLAPIENTRY
 598 _mesa_ProgramLocalParameter4dARB(GLenum target, GLuint index,
 599                                  GLdouble x, GLdouble y,
 600                                  GLdouble z, GLdouble w)
 601 {
 602    _mesa_ProgramLocalParameter4fARB(target, index, (GLfloat) x, (GLfloat) y,
 603                                     (GLfloat) z, (GLfloat) w);
 604 }
 605
 606
 607 void GLAPIENTRY
 608 _mesa_ProgramLocalParameter4dvARB(GLenum target, GLuint index,
 609                                   const GLdouble *params)
 610 {
 611    _mesa_ProgramLocalParameter4fARB(target, index,
 612                                     (GLfloat) params[0], (GLfloat) params[1],
 613                                     (GLfloat) params[2], (GLfloat) params[3]);
 614 }
 615
 616
 617 void GLAPIENTRY
 618 _mesa_GetProgramLocalParameterfvARB(GLenum target, GLuint index,
 619                                     GLfloat *params)
 620 {
 621    GLfloat *param;
 622    GET_CURRENT_CONTEXT(ctx);
 623
 624    if (get_local_param_pointer(ctx, "glProgramLocalParameters4fvEXT",
 625                                 target, index, &param)) {
 626       COPY_4V(params, param);
 627    }
 628 }
 629
 630
 631 void GLAPIENTRY
 632 _mesa_GetProgramLocalParameterdvARB(GLenum target, GLuint index,
 633                                     GLdouble *params)
 634 {
 635    GLfloat *param;
 636    GET_CURRENT_CONTEXT(ctx);
 637
 638    if (get_local_param_pointer(ctx, "glProgramLocalParameters4fvEXT",
 639                                 target, index, &param)) {
 640       COPY_4V(params, param);
 641    }
 642 }
 643
 644
 645 void GLAPIENTRY
 646 _mesa_GetProgramivARB(GLenum target, GLenum pname, GLint *params)
 647 {
 648    const struct gl_program_constants *limits;
 649    struct gl_program *prog;
 650    GET_CURRENT_CONTEXT(ctx);
 651
 652    if (target == GL_VERTEX_PROGRAM_ARB
 653        && ctx->Extensions.ARB_vertex_program) {
 654       prog = ctx->VertexProgram.Current;
 655       limits = &ctx->Const.Program[MESA_SHADER_VERTEX];
 656    }
 657    else if (target == GL_FRAGMENT_PROGRAM_ARB
 658             && ctx->Extensions.ARB_fragment_program) {
 659       prog = ctx->FragmentProgram.Current;
 660       limits = &ctx->Const.Program[MESA_SHADER_FRAGMENT];
 661    }
 662    else {
 663       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(target)");
 664       return;
 665    }
 666
 667    assert(prog);
 668    assert(limits);
 669
 670    /* Queries supported for both vertex and fragment programs */
 671    switch (pname) {
 672       case GL_PROGRAM_LENGTH_ARB:
 673          *params
 674             = prog->String ? (GLint) strlen((char *) prog->String) : 0;
 675          return;
 676       case GL_PROGRAM_FORMAT_ARB:
 677          *params = prog->Format;
 678          return;
 679       case GL_PROGRAM_BINDING_ARB:
 680          *params = prog->Id;
 681          return;
 682       case GL_PROGRAM_INSTRUCTIONS_ARB:
 683          *params = prog->NumInstructions;
 684          return;
 685       case GL_MAX_PROGRAM_INSTRUCTIONS_ARB:
 686          *params = limits->MaxInstructions;
 687          return;
 688       case GL_PROGRAM_NATIVE_INSTRUCTIONS_ARB:
 689          *params = prog->NumNativeInstructions;
 690          return;
 691       case GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB:
 692          *params = limits->MaxNativeInstructions;
 693          return;
 694       case GL_PROGRAM_TEMPORARIES_ARB:
 695          *params = prog->NumTemporaries;
 696          return;
 697       case GL_MAX_PROGRAM_TEMPORARIES_ARB:
 698          *params = limits->MaxTemps;
 699          return;
 700       case GL_PROGRAM_NATIVE_TEMPORARIES_ARB:
 701          *params = prog->NumNativeTemporaries;
 702          return;
 703       case GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB:
 704          *params = limits->MaxNativeTemps;
 705          return;
 706       case GL_PROGRAM_PARAMETERS_ARB:
 707          *params = prog->NumParameters;
 708          return;
 709       case GL_MAX_PROGRAM_PARAMETERS_ARB:
 710          *params = limits->MaxParameters;
 711          return;
 712       case GL_PROGRAM_NATIVE_PARAMETERS_ARB:
 713          *params = prog->NumNativeParameters;
 714          return;
 715       case GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB:
 716          *params = limits->MaxNativeParameters;
 717          return;
 718       case GL_PROGRAM_ATTRIBS_ARB:
 719          *params = prog->NumAttributes;
 720          return;
 721       case GL_MAX_PROGRAM_ATTRIBS_ARB:
 722          *params = limits->MaxAttribs;
 723          return;
 724       case GL_PROGRAM_NATIVE_ATTRIBS_ARB:
 725          *params = prog->NumNativeAttributes;
 726          return;
 727       case GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB:
 728          *params = limits->MaxNativeAttribs;
 729          return;
 730       case GL_PROGRAM_ADDRESS_REGISTERS_ARB:
 731          *params = prog->NumAddressRegs;
 732          return;
 733       case GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB:
 734          *params = limits->MaxAddressRegs;
 735          return;
 736       case GL_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB:
 737          *params = prog->NumNativeAddressRegs;
 738          return;
 739       case GL_MAX_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB:
 740          *params = limits->MaxNativeAddressRegs;
 741          return;
 742       case GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB:
 743          *params = limits->MaxLocalParams;
 744          return;
 745       case GL_MAX_PROGRAM_ENV_PARAMETERS_ARB:
 746          *params = limits->MaxEnvParams;
 747          return;
 748       case GL_PROGRAM_UNDER_NATIVE_LIMITS_ARB:
 749          /*
 750           * XXX we may not really need a driver callback here.
 751           * If the number of native instructions, registers, etc. used
 752           * are all below the maximums, we could return true.
 753           * The spec says that even if this query returns true, there's
 754           * no guarantee that the program will run in hardware.
 755           */
 756          if (prog->Id == 0) {
 757             /* default/null program */
 758             *params = GL_FALSE;
 759          }
 760          else if (ctx->Driver.IsProgramNative) {
 761             /* ask the driver */
 762             *params = ctx->Driver.IsProgramNative( ctx, target, prog );
 763          }
 764          else {
 765             /* probably running in software */
 766             *params = GL_TRUE;
 767          }
 768          return;
 769       default:
 770          /* continue with fragment-program only queries below */
 771          break;
 772    }
 773
 774    /*
 775     * The following apply to fragment programs only (at this time)
 776     */
 777    if (target == GL_FRAGMENT_PROGRAM_ARB) {
 778       const struct gl_program *fp = ctx->FragmentProgram.Current;
 779       switch (pname) {
 780          case GL_PROGRAM_ALU_INSTRUCTIONS_ARB:
 781             *params = fp->NumNativeAluInstructions;
 782             return;
 783          case GL_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB:
 784             *params = fp->NumAluInstructions;
 785             return;
 786          case GL_PROGRAM_TEX_INSTRUCTIONS_ARB:
 787             *params = fp->NumTexInstructions;
 788             return;
 789          case GL_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB:
 790             *params = fp->NumNativeTexInstructions;
 791             return;
 792          case GL_PROGRAM_TEX_INDIRECTIONS_ARB:
 793             *params = fp->NumTexIndirections;
 794             return;
 795          case GL_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB:
 796             *params = fp->NumNativeTexIndirections;
 797             return;
 798          case GL_MAX_PROGRAM_ALU_INSTRUCTIONS_ARB:
 799             *params = limits->MaxAluInstructions;
 800             return;
 801          case GL_MAX_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB:
 802             *params = limits->MaxNativeAluInstructions;
 803             return;
 804          case GL_MAX_PROGRAM_TEX_INSTRUCTIONS_ARB:
 805             *params = limits->MaxTexInstructions;
 806             return;
 807          case GL_MAX_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB:
 808             *params = limits->MaxNativeTexInstructions;
 809             return;
 810          case GL_MAX_PROGRAM_TEX_INDIRECTIONS_ARB:
 811             *params = limits->MaxTexIndirections;
 812             return;
 813          case GL_MAX_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB:
 814             *params = limits->MaxNativeTexIndirections;
 815             return;
 816          default:
 817             _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(pname)");
 818             return;
 819       }
 820    } else {
 821       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(pname)");
 822       return;
 823    }
 824 }
 825
 826
 827 void GLAPIENTRY
 828 _mesa_GetProgramStringARB(GLenum target, GLenum pname, GLvoid *string)
 829 {
 830    const struct gl_program *prog;
 831    char *dst = (char *) string;
 832    GET_CURRENT_CONTEXT(ctx);
 833
 834    if (target == GL_VERTEX_PROGRAM_ARB) {
 835       prog = ctx->VertexProgram.Current;
 836    }
 837    else if (target == GL_FRAGMENT_PROGRAM_ARB) {
 838       prog = ctx->FragmentProgram.Current;
 839    }
 840    else {
 841       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramStringARB(target)");
 842       return;
 843    }
 844
 845    assert(prog);
 846
 847    if (pname != GL_PROGRAM_STRING_ARB) {
 848       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramStringARB(pname)");
 849       return;
 850    }
 851
 852    if (prog->String)
 853       memcpy(dst, prog->String, strlen((char *) prog->String));
 854    else
 855       *dst = '\0';
 856 }