reactos/dll/opengl/mesa/src/mesa/main/arbprogram.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.0
   4  *
   5  * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR 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 "program/arbprogparse.h"
  40 #include "program/nvfragparse.h"
  41 #include "program/nvvertparse.h"
  42 #include "program/program.h"
  43
  44
  45
  46 /**
  47  * Mixing ARB and NV vertex/fragment programs can be tricky.
  48  * Note: GL_VERTEX_PROGRAM_ARB == GL_VERTEX_PROGRAM_NV
  49  *  but, GL_FRAGMENT_PROGRAM_ARB != GL_FRAGMENT_PROGRAM_NV
  50  * The two different fragment program targets are supposed to be compatible
  51  * to some extent (see GL_ARB_fragment_program spec).
  52  * This function does the compatibility check.
  53  */
  54 static GLboolean
  55 compatible_program_targets(GLenum t1, GLenum t2)
  56 {
  57    if (t1 == t2)
  58       return GL_TRUE;
  59    if (t1 == GL_FRAGMENT_PROGRAM_ARB && t2 == GL_FRAGMENT_PROGRAM_NV)
  60       return GL_TRUE;
  61    if (t1 == GL_FRAGMENT_PROGRAM_NV && t2 == GL_FRAGMENT_PROGRAM_ARB)
  62       return GL_TRUE;
  63    return GL_FALSE;
  64 }
  65
  66
  67 /**
  68  * Bind a program (make it current)
  69  * \note Called from the GL API dispatcher by both glBindProgramNV
  70  * and glBindProgramARB.
  71  */
  72 void GLAPIENTRY
  73 _mesa_BindProgram(GLenum target, GLuint id)
  74 {
  75    struct gl_program *curProg, *newProg;
  76    GET_CURRENT_CONTEXT(ctx);
  77    ASSERT_OUTSIDE_BEGIN_END(ctx);
  78
  79    /* Error-check target and get curProg */
  80    if ((target == GL_VERTEX_PROGRAM_ARB) && /* == GL_VERTEX_PROGRAM_NV */
  81         (ctx->Extensions.NV_vertex_program ||
  82          ctx->Extensions.ARB_vertex_program)) {
  83       curProg = &ctx->VertexProgram.Current->Base;
  84    }
  85    else if ((target == GL_FRAGMENT_PROGRAM_NV
  86              && ctx->Extensions.NV_fragment_program) ||
  87             (target == GL_FRAGMENT_PROGRAM_ARB
  88              && ctx->Extensions.ARB_fragment_program)) {
  89       curProg = &ctx->FragmentProgram.Current->Base;
  90    }
  91    else {
  92       _mesa_error(ctx, GL_INVALID_ENUM, "glBindProgramNV/ARB(target)");
  93       return;
  94    }
  95
  96    /*
  97     * Get pointer to new program to bind.
  98     * NOTE: binding to a non-existant program is not an error.
  99     * That's supposed to be caught in glBegin.
 100     */
 101    if (id == 0) {
 102       /* Bind a default program */
 103       newProg = NULL;
 104       if (target == GL_VERTEX_PROGRAM_ARB) /* == GL_VERTEX_PROGRAM_NV */
 105          newProg = &ctx->Shared->DefaultVertexProgram->Base;
 106       else
 107          newProg = &ctx->Shared->DefaultFragmentProgram->Base;
 108    }
 109    else {
 110       /* Bind a user program */
 111       newProg = _mesa_lookup_program(ctx, id);
 112       if (!newProg || newProg == &_mesa_DummyProgram) {
 113          /* allocate a new program now */
 114          newProg = ctx->Driver.NewProgram(ctx, target, id);
 115          if (!newProg) {
 116             _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindProgramNV/ARB");
 117             return;
 118          }
 119          _mesa_HashInsert(ctx->Shared->Programs, id, newProg);
 120       }
 121       else if (!compatible_program_targets(newProg->Target, target)) {
 122          _mesa_error(ctx, GL_INVALID_OPERATION,
 123                      "glBindProgramNV/ARB(target mismatch)");
 124          return;
 125       }
 126    }
 127
 128    /** All error checking is complete now **/
 129
 130    if (curProg->Id == id) {
 131       /* binding same program - no change */
 132       return;
 133    }
 134
 135    /* signal new program (and its new constants) */
 136    FLUSH_VERTICES(ctx, _NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS);
 137
 138    /* bind newProg */
 139    if (target == GL_VERTEX_PROGRAM_ARB) { /* == GL_VERTEX_PROGRAM_NV */
 140       _mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current,
 141                                (struct gl_vertex_program *) newProg);
 142    }
 143    else if (target == GL_FRAGMENT_PROGRAM_NV ||
 144             target == GL_FRAGMENT_PROGRAM_ARB) {
 145       _mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current,
 146                                (struct gl_fragment_program *) newProg);
 147    }
 148
 149    /* Never null pointers */
 150    ASSERT(ctx->VertexProgram.Current);
 151    ASSERT(ctx->FragmentProgram.Current);
 152
 153    if (ctx->Driver.BindProgram)
 154       ctx->Driver.BindProgram(ctx, target, newProg);
 155 }
 156
 157
 158 /**
 159  * Delete a list of programs.
 160  * \note Not compiled into display lists.
 161  * \note Called by both glDeleteProgramsNV and glDeleteProgramsARB.
 162  */
 163 void GLAPIENTRY
 164 _mesa_DeletePrograms(GLsizei n, const GLuint *ids)
 165 {
 166    GLint i;
 167    GET_CURRENT_CONTEXT(ctx);
 168    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 169
 170    if (n < 0) {
 171       _mesa_error( ctx, GL_INVALID_VALUE, "glDeleteProgramsNV" );
 172       return;
 173    }
 174
 175    for (i = 0; i < n; i++) {
 176       if (ids[i] != 0) {
 177          struct gl_program *prog = _mesa_lookup_program(ctx, ids[i]);
 178          if (prog == &_mesa_DummyProgram) {
 179             _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
 180          }
 181          else if (prog) {
 182             /* Unbind program if necessary */
 183             switch (prog->Target) {
 184             case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */
 185             case GL_VERTEX_STATE_PROGRAM_NV:
 186                if (ctx->VertexProgram.Current &&
 187                    ctx->VertexProgram.Current->Base.Id == ids[i]) {
 188                   /* unbind this currently bound program */
 189                   _mesa_BindProgram(prog->Target, 0);
 190                }
 191                break;
 192             case GL_FRAGMENT_PROGRAM_NV:
 193             case GL_FRAGMENT_PROGRAM_ARB:
 194                if (ctx->FragmentProgram.Current &&
 195                    ctx->FragmentProgram.Current->Base.Id == ids[i]) {
 196                   /* unbind this currently bound program */
 197                   _mesa_BindProgram(prog->Target, 0);
 198                }
 199                break;
 200             default:
 201                _mesa_problem(ctx, "bad target in glDeleteProgramsNV");
 202                return;
 203             }
 204             /* The ID is immediately available for re-use now */
 205             _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
 206             _mesa_reference_program(ctx, &prog, NULL);
 207          }
 208       }
 209    }
 210 }
 211
 212
 213 /**
 214  * Generate a list of new program identifiers.
 215  * \note Not compiled into display lists.
 216  * \note Called by both glGenProgramsNV and glGenProgramsARB.
 217  */
 218 void GLAPIENTRY
 219 _mesa_GenPrograms(GLsizei n, GLuint *ids)
 220 {
 221    GLuint first;
 222    GLuint i;
 223    GET_CURRENT_CONTEXT(ctx);
 224    ASSERT_OUTSIDE_BEGIN_END(ctx);
 225
 226    if (n < 0) {
 227       _mesa_error(ctx, GL_INVALID_VALUE, "glGenPrograms");
 228       return;
 229    }
 230
 231    if (!ids)
 232       return;
 233
 234    first = _mesa_HashFindFreeKeyBlock(ctx->Shared->Programs, n);
 235
 236    /* Insert pointer to dummy program as placeholder */
 237    for (i = 0; i < (GLuint) n; i++) {
 238       _mesa_HashInsert(ctx->Shared->Programs, first + i, &_mesa_DummyProgram);
 239    }
 240
 241    /* Return the program names */
 242    for (i = 0; i < (GLuint) n; i++) {
 243       ids[i] = first + i;
 244    }
 245 }
 246
 247
 248 /**
 249  * Determine if id names a vertex or fragment program.
 250  * \note Not compiled into display lists.
 251  * \note Called from both glIsProgramNV and glIsProgramARB.
 252  * \param id is the program identifier
 253  * \return GL_TRUE if id is a program, else GL_FALSE.
 254  */
 255 GLboolean GLAPIENTRY
 256 _mesa_IsProgramARB(GLuint id)
 257 {
 258    struct gl_program *prog = NULL;
 259    GET_CURRENT_CONTEXT(ctx);
 260    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 261
 262    if (id == 0)
 263       return GL_FALSE;
 264
 265    prog = _mesa_lookup_program(ctx, id);
 266    if (prog && (prog != &_mesa_DummyProgram))
 267       return GL_TRUE;
 268    else
 269       return GL_FALSE;
 270 }
 271
 272 static GLboolean
 273 get_local_param_pointer(struct gl_context *ctx, const char *func,
 274                         GLenum target, GLuint index, GLfloat **param)
 275 {
 276    struct gl_program *prog;
 277    GLuint maxParams;
 278
 279    if (target == GL_VERTEX_PROGRAM_ARB
 280        && ctx->Extensions.ARB_vertex_program) {
 281       prog = &(ctx->VertexProgram.Current->Base);
 282       maxParams = ctx->Const.VertexProgram.MaxLocalParams;
 283    }
 284    else if (target == GL_FRAGMENT_PROGRAM_ARB
 285             && ctx->Extensions.ARB_fragment_program) {
 286       prog = &(ctx->FragmentProgram.Current->Base);
 287       maxParams = ctx->Const.FragmentProgram.MaxLocalParams;
 288    }
 289    else if (target == GL_FRAGMENT_PROGRAM_NV
 290             && ctx->Extensions.NV_fragment_program) {
 291       prog = &(ctx->FragmentProgram.Current->Base);
 292       maxParams = MAX_NV_FRAGMENT_PROGRAM_PARAMS;
 293    }
 294    else {
 295       _mesa_error(ctx, GL_INVALID_ENUM,
 296                   "%s(target)", func);
 297       return GL_FALSE;
 298    }
 299
 300    if (index >= maxParams) {
 301       _mesa_error(ctx, GL_INVALID_VALUE, "%s(index)", func);
 302       return GL_FALSE;
 303    }
 304
 305    *param = prog->LocalParams[index];
 306    return GL_TRUE;
 307 }
 308
 309
 310 static GLboolean
 311 get_env_param_pointer(struct gl_context *ctx, const char *func,
 312                       GLenum target, GLuint index, GLfloat **param)
 313 {
 314    if (target == GL_FRAGMENT_PROGRAM_ARB
 315        && ctx->Extensions.ARB_fragment_program) {
 316       if (index >= ctx->Const.FragmentProgram.MaxEnvParams) {
 317          _mesa_error(ctx, GL_INVALID_VALUE, "%s(index)", func);
 318          return GL_FALSE;
 319       }
 320       *param = ctx->FragmentProgram.Parameters[index];
 321       return GL_TRUE;
 322    }
 323    else if (target == GL_VERTEX_PROGRAM_ARB &&
 324             (ctx->Extensions.ARB_vertex_program ||
 325              ctx->Extensions.NV_vertex_program)) {
 326       if (index >= ctx->Const.VertexProgram.MaxEnvParams) {
 327          _mesa_error(ctx, GL_INVALID_VALUE, "%s(index)", func);
 328          return GL_FALSE;
 329       }
 330       *param = ctx->VertexProgram.Parameters[index];
 331       return GL_TRUE;
 332    } else {
 333       _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
 334       return GL_FALSE;
 335    }
 336 }
 337
 338 void GLAPIENTRY
 339 _mesa_ProgramStringARB(GLenum target, GLenum format, GLsizei len,
 340                        const GLvoid *string)
 341 {
 342    struct gl_program *base;
 343    GET_CURRENT_CONTEXT(ctx);
 344    ASSERT_OUTSIDE_BEGIN_END(ctx);
 345
 346    FLUSH_VERTICES(ctx, _NEW_PROGRAM);
 347
 348    if (!ctx->Extensions.ARB_vertex_program
 349        && !ctx->Extensions.ARB_fragment_program) {
 350       _mesa_error(ctx, GL_INVALID_OPERATION, "glProgramStringARB()");
 351       return;
 352    }
 353
 354    if (format != GL_PROGRAM_FORMAT_ASCII_ARB) {
 355       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramStringARB(format)");
 356       return;
 357    }
 358
 359    /* The first couple cases are complicated.  The same enum value is used for
 360     * ARB and NV vertex programs.  If the target is a vertex program, parse it
 361     * using the ARB grammar if the string starts with "!!ARB" or if
 362     * NV_vertex_program is not supported.
 363     */
 364    if (target == GL_VERTEX_PROGRAM_ARB
 365        && ctx->Extensions.ARB_vertex_program
 366        && ((strncmp(string, "!!ARB", 5) == 0)
 367            || !ctx->Extensions.NV_vertex_program)) {
 368       struct gl_vertex_program *prog = ctx->VertexProgram.Current;
 369       _mesa_parse_arb_vertex_program(ctx, target, string, len, prog);
 370
 371       base = & prog->Base;
 372    }
 373 #if FEATURE_NV_vertex_program
 374    else if ((target == GL_VERTEX_PROGRAM_ARB
 375              || target == GL_VERTEX_STATE_PROGRAM_NV)
 376             && ctx->Extensions.NV_vertex_program) {
 377       struct gl_vertex_program *prog = ctx->VertexProgram.Current;
 378       _mesa_parse_nv_vertex_program(ctx, target, string, len, prog);
 379
 380       base = & prog->Base;
 381    }
 382 #endif
 383    else if (target == GL_FRAGMENT_PROGRAM_ARB
 384             && ctx->Extensions.ARB_fragment_program) {
 385       struct gl_fragment_program *prog = ctx->FragmentProgram.Current;
 386       _mesa_parse_arb_fragment_program(ctx, target, string, len, prog);
 387
 388       base = & prog->Base;
 389    }
 390 #if FEATURE_NV_fragment_program
 391    else if (target == GL_FRAGMENT_PROGRAM_NV
 392             && ctx->Extensions.NV_fragment_program) {
 393       struct gl_fragment_program *prog = ctx->FragmentProgram.Current;
 394       _mesa_parse_nv_fragment_program(ctx, target, string, len, prog);
 395
 396       base = & prog->Base;
 397    }
 398 #endif
 399    else {
 400       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramStringARB(target)");
 401       return;
 402    }
 403
 404    if (ctx->Program.ErrorPos == -1) {
 405       /* finally, give the program to the driver for translation/checking */
 406       if (!ctx->Driver.ProgramStringNotify(ctx, target, base)) {
 407          _mesa_error(ctx, GL_INVALID_OPERATION,
 408                      "glProgramStringARB(rejected by driver");
 409       }
 410    }
 411 }
 412
 413
 414 /**
 415  * Set a program env parameter register.
 416  * \note Called from the GL API dispatcher.
 417  * Note, this function is also used by the GL_NV_vertex_program extension
 418  * (alias to ProgramParameterdNV)
 419  */
 420 void GLAPIENTRY
 421 _mesa_ProgramEnvParameter4dARB(GLenum target, GLuint index,
 422                                GLdouble x, GLdouble y, GLdouble z, GLdouble w)
 423 {
 424    _mesa_ProgramEnvParameter4fARB(target, index, (GLfloat) x, (GLfloat) y,
 425                                   (GLfloat) z, (GLfloat) w);
 426 }
 427
 428
 429 /**
 430  * Set a program env parameter register.
 431  * \note Called from the GL API dispatcher.
 432  * Note, this function is also used by the GL_NV_vertex_program extension
 433  * (alias to ProgramParameterdvNV)
 434  */
 435 void GLAPIENTRY
 436 _mesa_ProgramEnvParameter4dvARB(GLenum target, GLuint index,
 437                                 const GLdouble *params)
 438 {
 439    _mesa_ProgramEnvParameter4fARB(target, index, (GLfloat) params[0],
 440                                   (GLfloat) params[1], (GLfloat) params[2],
 441                                   (GLfloat) params[3]);
 442 }
 443
 444
 445 /**
 446  * Set a program env parameter register.
 447  * \note Called from the GL API dispatcher.
 448  * Note, this function is also used by the GL_NV_vertex_program extension
 449  * (alias to ProgramParameterfNV)
 450  */
 451 void GLAPIENTRY
 452 _mesa_ProgramEnvParameter4fARB(GLenum target, GLuint index,
 453                                GLfloat x, GLfloat y, GLfloat z, GLfloat w)
 454 {
 455    GLfloat *param;
 456
 457    GET_CURRENT_CONTEXT(ctx);
 458    ASSERT_OUTSIDE_BEGIN_END(ctx);
 459
 460    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 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  * Note, this function is also used by the GL_NV_vertex_program extension
 474  * (alias to ProgramParameterfvNV)
 475  */
 476 void GLAPIENTRY
 477 _mesa_ProgramEnvParameter4fvARB(GLenum target, GLuint index,
 478                                 const GLfloat *params)
 479 {
 480    GLfloat *param;
 481
 482    GET_CURRENT_CONTEXT(ctx);
 483    ASSERT_OUTSIDE_BEGIN_END(ctx);
 484
 485    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 486
 487    if (get_env_param_pointer(ctx, "glProgramEnvParameter4fv",
 488                               target, index, &param)) {
 489       memcpy(param, params, 4 * sizeof(GLfloat));
 490    }
 491 }
 492
 493
 494 void GLAPIENTRY
 495 _mesa_ProgramEnvParameters4fvEXT(GLenum target, GLuint index, GLsizei count,
 496                                  const GLfloat *params)
 497 {
 498    GET_CURRENT_CONTEXT(ctx);
 499    GLfloat * dest;
 500    ASSERT_OUTSIDE_BEGIN_END(ctx);
 501
 502    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 503
 504    if (count <= 0) {
 505       _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(count)");
 506    }
 507
 508    if (target == GL_FRAGMENT_PROGRAM_ARB
 509        && ctx->Extensions.ARB_fragment_program) {
 510       if ((index + count) > ctx->Const.FragmentProgram.MaxEnvParams) {
 511          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(index + count)");
 512          return;
 513       }
 514       dest = ctx->FragmentProgram.Parameters[index];
 515    }
 516    else if (target == GL_VERTEX_PROGRAM_ARB
 517        && ctx->Extensions.ARB_vertex_program) {
 518       if ((index + count) > ctx->Const.VertexProgram.MaxEnvParams) {
 519          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(index + count)");
 520          return;
 521       }
 522       dest = ctx->VertexProgram.Parameters[index];
 523    }
 524    else {
 525       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramEnvParameters4fv(target)");
 526       return;
 527    }
 528
 529    memcpy(dest, params, count * 4 * sizeof(GLfloat));
 530 }
 531
 532
 533 void GLAPIENTRY
 534 _mesa_GetProgramEnvParameterdvARB(GLenum target, GLuint index,
 535                                   GLdouble *params)
 536 {
 537    GET_CURRENT_CONTEXT(ctx);
 538    GLfloat *fparam;
 539
 540    if (get_env_param_pointer(ctx, "glGetProgramEnvParameterdv",
 541                              target, index, &fparam)) {
 542       COPY_4V(params, fparam);
 543    }
 544 }
 545
 546
 547 void GLAPIENTRY
 548 _mesa_GetProgramEnvParameterfvARB(GLenum target, GLuint index,
 549                                   GLfloat *params)
 550 {
 551    GLfloat *param;
 552
 553    GET_CURRENT_CONTEXT(ctx);
 554
 555    ASSERT_OUTSIDE_BEGIN_END(ctx);
 556
 557    if (get_env_param_pointer(ctx, "glGetProgramEnvParameterfv",
 558                               target, index, &param)) {
 559       COPY_4V(params, param);
 560    }
 561 }
 562
 563
 564 /**
 565  * Note, this function is also used by the GL_NV_fragment_program extension.
 566  */
 567 void GLAPIENTRY
 568 _mesa_ProgramLocalParameter4fARB(GLenum target, GLuint index,
 569                                  GLfloat x, GLfloat y, GLfloat z, GLfloat w)
 570 {
 571    GET_CURRENT_CONTEXT(ctx);
 572    GLfloat *param;
 573    ASSERT_OUTSIDE_BEGIN_END(ctx);
 574
 575    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 576
 577    if (get_local_param_pointer(ctx, "glProgramLocalParameterARB",
 578                                target, index, &param)) {
 579       ASSERT(index < MAX_PROGRAM_LOCAL_PARAMS);
 580       ASSIGN_4V(param, x, y, z, w);
 581    }
 582 }
 583
 584
 585 /**
 586  * Note, this function is also used by the GL_NV_fragment_program extension.
 587  */
 588 void GLAPIENTRY
 589 _mesa_ProgramLocalParameter4fvARB(GLenum target, GLuint index,
 590                                   const GLfloat *params)
 591 {
 592    _mesa_ProgramLocalParameter4fARB(target, index, params[0], params[1],
 593                                     params[2], params[3]);
 594 }
 595
 596
 597 void GLAPIENTRY
 598 _mesa_ProgramLocalParameters4fvEXT(GLenum target, GLuint index, GLsizei count,
 599                                    const GLfloat *params)
 600 {
 601    GET_CURRENT_CONTEXT(ctx);
 602    GLfloat *dest;
 603    ASSERT_OUTSIDE_BEGIN_END(ctx);
 604
 605    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 606
 607    if (count <= 0) {
 608       _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameters4fv(count)");
 609    }
 610
 611    if (target == GL_FRAGMENT_PROGRAM_ARB
 612        && ctx->Extensions.ARB_fragment_program) {
 613       if ((index + count) > ctx->Const.FragmentProgram.MaxLocalParams) {
 614          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameters4fvEXT(index + count)");
 615          return;
 616       }
 617       dest = ctx->FragmentProgram.Current->Base.LocalParams[index];
 618    }
 619    else if (target == GL_VERTEX_PROGRAM_ARB
 620             && ctx->Extensions.ARB_vertex_program) {
 621       if ((index + count) > ctx->Const.VertexProgram.MaxLocalParams) {
 622          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameters4fvEXT(index + count)");
 623          return;
 624       }
 625       dest = ctx->VertexProgram.Current->Base.LocalParams[index];
 626    }
 627    else {
 628       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramLocalParameters4fvEXT(target)");
 629       return;
 630    }
 631
 632    memcpy(dest, params, count * 4 * sizeof(GLfloat));
 633 }
 634
 635
 636 /**
 637  * Note, this function is also used by the GL_NV_fragment_program extension.
 638  */
 639 void GLAPIENTRY
 640 _mesa_ProgramLocalParameter4dARB(GLenum target, GLuint index,
 641                                  GLdouble x, GLdouble y,
 642                                  GLdouble z, GLdouble w)
 643 {
 644    _mesa_ProgramLocalParameter4fARB(target, index, (GLfloat) x, (GLfloat) y,
 645                                     (GLfloat) z, (GLfloat) w);
 646 }
 647
 648
 649 /**
 650  * Note, this function is also used by the GL_NV_fragment_program extension.
 651  */
 652 void GLAPIENTRY
 653 _mesa_ProgramLocalParameter4dvARB(GLenum target, GLuint index,
 654                                   const GLdouble *params)
 655 {
 656    _mesa_ProgramLocalParameter4fARB(target, index,
 657                                     (GLfloat) params[0], (GLfloat) params[1],
 658                                     (GLfloat) params[2], (GLfloat) params[3]);
 659 }
 660
 661
 662 /**
 663  * Note, this function is also used by the GL_NV_fragment_program extension.
 664  */
 665 void GLAPIENTRY
 666 _mesa_GetProgramLocalParameterfvARB(GLenum target, GLuint index,
 667                                     GLfloat *params)
 668 {
 669    GLfloat *param;
 670    GET_CURRENT_CONTEXT(ctx);
 671    ASSERT_OUTSIDE_BEGIN_END(ctx);
 672
 673    if (get_local_param_pointer(ctx, "glProgramLocalParameters4fvEXT",
 674                                 target, index, &param)) {
 675       COPY_4V(params, param);
 676    }
 677 }
 678
 679
 680 /**
 681  * Note, this function is also used by the GL_NV_fragment_program extension.
 682  */
 683 void GLAPIENTRY
 684 _mesa_GetProgramLocalParameterdvARB(GLenum target, GLuint index,
 685                                     GLdouble *params)
 686 {
 687    GLfloat *param;
 688    GET_CURRENT_CONTEXT(ctx);
 689    ASSERT_OUTSIDE_BEGIN_END(ctx);
 690
 691    if (get_local_param_pointer(ctx, "glProgramLocalParameters4fvEXT",
 692                                 target, index, &param)) {
 693       COPY_4V(params, param);
 694    }
 695 }
 696
 697
 698 void GLAPIENTRY
 699 _mesa_GetProgramivARB(GLenum target, GLenum pname, GLint *params)
 700 {
 701    const struct gl_program_constants *limits;
 702    struct gl_program *prog;
 703    GET_CURRENT_CONTEXT(ctx);
 704
 705    ASSERT_OUTSIDE_BEGIN_END(ctx);
 706
 707    if (target == GL_VERTEX_PROGRAM_ARB
 708        && ctx->Extensions.ARB_vertex_program) {
 709       prog = &(ctx->VertexProgram.Current->Base);
 710       limits = &ctx->Const.VertexProgram;
 711    }
 712    else if (target == GL_FRAGMENT_PROGRAM_ARB
 713             && ctx->Extensions.ARB_fragment_program) {
 714       prog = &(ctx->FragmentProgram.Current->Base);
 715       limits = &ctx->Const.FragmentProgram;
 716    }
 717    else {
 718       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(target)");
 719       return;
 720    }
 721
 722    ASSERT(prog);
 723    ASSERT(limits);
 724
 725    /* Queries supported for both vertex and fragment programs */
 726    switch (pname) {
 727       case GL_PROGRAM_LENGTH_ARB:
 728          *params
 729             = prog->String ? (GLint) strlen((char *) prog->String) : 0;
 730          return;
 731       case GL_PROGRAM_FORMAT_ARB:
 732          *params = prog->Format;
 733          return;
 734       case GL_PROGRAM_BINDING_ARB:
 735          *params = prog->Id;
 736          return;
 737       case GL_PROGRAM_INSTRUCTIONS_ARB:
 738          *params = prog->NumInstructions;
 739          return;
 740       case GL_MAX_PROGRAM_INSTRUCTIONS_ARB:
 741          *params = limits->MaxInstructions;
 742          return;
 743       case GL_PROGRAM_NATIVE_INSTRUCTIONS_ARB:
 744          *params = prog->NumNativeInstructions;
 745          return;
 746       case GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB:
 747          *params = limits->MaxNativeInstructions;
 748          return;
 749       case GL_PROGRAM_TEMPORARIES_ARB:
 750          *params = prog->NumTemporaries;
 751          return;
 752       case GL_MAX_PROGRAM_TEMPORARIES_ARB:
 753          *params = limits->MaxTemps;
 754          return;
 755       case GL_PROGRAM_NATIVE_TEMPORARIES_ARB:
 756          *params = prog->NumNativeTemporaries;
 757          return;
 758       case GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB:
 759          *params = limits->MaxNativeTemps;
 760          return;
 761       case GL_PROGRAM_PARAMETERS_ARB:
 762          *params = prog->NumParameters;
 763          return;
 764       case GL_MAX_PROGRAM_PARAMETERS_ARB:
 765          *params = limits->MaxParameters;
 766          return;
 767       case GL_PROGRAM_NATIVE_PARAMETERS_ARB:
 768          *params = prog->NumNativeParameters;
 769          return;
 770       case GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB:
 771          *params = limits->MaxNativeParameters;
 772          return;
 773       case GL_PROGRAM_ATTRIBS_ARB:
 774          *params = prog->NumAttributes;
 775          return;
 776       case GL_MAX_PROGRAM_ATTRIBS_ARB:
 777          *params = limits->MaxAttribs;
 778          return;
 779       case GL_PROGRAM_NATIVE_ATTRIBS_ARB:
 780          *params = prog->NumNativeAttributes;
 781          return;
 782       case GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB:
 783          *params = limits->MaxNativeAttribs;
 784          return;
 785       case GL_PROGRAM_ADDRESS_REGISTERS_ARB:
 786          *params = prog->NumAddressRegs;
 787          return;
 788       case GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB:
 789          *params = limits->MaxAddressRegs;
 790          return;
 791       case GL_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB:
 792          *params = prog->NumNativeAddressRegs;
 793          return;
 794       case GL_MAX_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB:
 795          *params = limits->MaxNativeAddressRegs;
 796          return;
 797       case GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB:
 798          *params = limits->MaxLocalParams;
 799          return;
 800       case GL_MAX_PROGRAM_ENV_PARAMETERS_ARB:
 801          *params = limits->MaxEnvParams;
 802          return;
 803       case GL_PROGRAM_UNDER_NATIVE_LIMITS_ARB:
 804          /*
 805           * XXX we may not really need a driver callback here.
 806           * If the number of native instructions, registers, etc. used
 807           * are all below the maximums, we could return true.
 808           * The spec says that even if this query returns true, there's
 809           * no guarantee that the program will run in hardware.
 810           */
 811          if (prog->Id == 0) {
 812             /* default/null program */
 813             *params = GL_FALSE;
 814          }
 815          else if (ctx->Driver.IsProgramNative) {
 816             /* ask the driver */
 817             *params = ctx->Driver.IsProgramNative( ctx, target, prog );
 818          }
 819          else {
 820             /* probably running in software */
 821             *params = GL_TRUE;
 822          }
 823          return;
 824       default:
 825          /* continue with fragment-program only queries below */
 826          break;
 827    }
 828
 829    /*
 830     * The following apply to fragment programs only (at this time)
 831     */
 832    if (target == GL_FRAGMENT_PROGRAM_ARB) {
 833       const struct gl_fragment_program *fp = ctx->FragmentProgram.Current;
 834       switch (pname) {
 835          case GL_PROGRAM_ALU_INSTRUCTIONS_ARB:
 836             *params = fp->Base.NumNativeAluInstructions;
 837             return;
 838          case GL_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB:
 839             *params = fp->Base.NumAluInstructions;
 840             return;
 841          case GL_PROGRAM_TEX_INSTRUCTIONS_ARB:
 842             *params = fp->Base.NumTexInstructions;
 843             return;
 844          case GL_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB:
 845             *params = fp->Base.NumNativeTexInstructions;
 846             return;
 847          case GL_PROGRAM_TEX_INDIRECTIONS_ARB:
 848             *params = fp->Base.NumTexIndirections;
 849             return;
 850          case GL_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB:
 851             *params = fp->Base.NumNativeTexIndirections;
 852             return;
 853          case GL_MAX_PROGRAM_ALU_INSTRUCTIONS_ARB:
 854             *params = limits->MaxAluInstructions;
 855             return;
 856          case GL_MAX_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB:
 857             *params = limits->MaxNativeAluInstructions;
 858             return;
 859          case GL_MAX_PROGRAM_TEX_INSTRUCTIONS_ARB:
 860             *params = limits->MaxTexInstructions;
 861             return;
 862          case GL_MAX_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB:
 863             *params = limits->MaxNativeTexInstructions;
 864             return;
 865          case GL_MAX_PROGRAM_TEX_INDIRECTIONS_ARB:
 866             *params = limits->MaxTexIndirections;
 867             return;
 868          case GL_MAX_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB:
 869             *params = limits->MaxNativeTexIndirections;
 870             return;
 871          default:
 872             _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(pname)");
 873             return;
 874       }
 875    } else {
 876       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(pname)");
 877       return;
 878    }
 879 }
 880
 881
 882 void GLAPIENTRY
 883 _mesa_GetProgramStringARB(GLenum target, GLenum pname, GLvoid *string)
 884 {
 885    const struct gl_program *prog;
 886    char *dst = (char *) string;
 887    GET_CURRENT_CONTEXT(ctx);
 888
 889    ASSERT_OUTSIDE_BEGIN_END(ctx);
 890
 891    if (target == GL_VERTEX_PROGRAM_ARB) {
 892       prog = &(ctx->VertexProgram.Current->Base);
 893    }
 894    else if (target == GL_FRAGMENT_PROGRAM_ARB) {
 895       prog = &(ctx->FragmentProgram.Current->Base);
 896    }
 897    else {
 898       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramStringARB(target)");
 899       return;
 900    }
 901
 902    ASSERT(prog);
 903
 904    if (pname != GL_PROGRAM_STRING_ARB) {
 905       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramStringARB(pname)");
 906       return;
 907    }
 908
 909    if (prog->String)
 910       memcpy(dst, prog->String, strlen((char *) prog->String));
 911    else
 912       *dst = '\0';
 913 }