src/mesa/shader/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 "arbprogram.h"
  39 #include "arbprogparse.h"
  40 #include "program.h"
  41
  42
  43
  44 /**
  45  * Mixing ARB and NV vertex/fragment programs can be tricky.
  46  * Note: GL_VERTEX_PROGRAM_ARB == GL_VERTEX_PROGRAM_NV
  47  *  but, GL_FRAGMENT_PROGRAM_ARB != GL_FRAGMENT_PROGRAM_NV
  48  * The two different fragment program targets are supposed to be compatible
  49  * to some extent (see GL_ARB_fragment_program spec).
  50  * This function does the compatibility check.
  51  */
  52 static GLboolean
  53 compatible_program_targets(GLenum t1, GLenum t2)
  54 {
  55    if (t1 == t2)
  56       return GL_TRUE;
  57    if (t1 == GL_FRAGMENT_PROGRAM_ARB && t2 == GL_FRAGMENT_PROGRAM_NV)
  58       return GL_TRUE;
  59    if (t1 == GL_FRAGMENT_PROGRAM_NV && t2 == GL_FRAGMENT_PROGRAM_ARB)
  60       return GL_TRUE;
  61    return GL_FALSE;
  62 }
  63
  64
  65 /**
  66  * Bind a program (make it current)
  67  * \note Called from the GL API dispatcher by both glBindProgramNV
  68  * and glBindProgramARB.
  69  */
  70 void GLAPIENTRY
  71 _mesa_BindProgram(GLenum target, GLuint id)
  72 {
  73    struct gl_program *curProg, *newProg;
  74    GET_CURRENT_CONTEXT(ctx);
  75    ASSERT_OUTSIDE_BEGIN_END(ctx);
  76
  77    FLUSH_VERTICES(ctx, _NEW_PROGRAM);
  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    /* bind newProg */
 136    if (target == GL_VERTEX_PROGRAM_ARB) { /* == GL_VERTEX_PROGRAM_NV */
 137       _mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current,
 138                                (struct gl_vertex_program *) newProg);
 139    }
 140    else if (target == GL_FRAGMENT_PROGRAM_NV ||
 141             target == GL_FRAGMENT_PROGRAM_ARB) {
 142       _mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current,
 143                                (struct gl_fragment_program *) newProg);
 144    }
 145
 146    /* Never null pointers */
 147    ASSERT(ctx->VertexProgram.Current);
 148    ASSERT(ctx->FragmentProgram.Current);
 149
 150    if (ctx->Driver.BindProgram)
 151       ctx->Driver.BindProgram(ctx, target, newProg);
 152 }
 153
 154
 155 /**
 156  * Delete a list of programs.
 157  * \note Not compiled into display lists.
 158  * \note Called by both glDeleteProgramsNV and glDeleteProgramsARB.
 159  */
 160 void GLAPIENTRY
 161 _mesa_DeletePrograms(GLsizei n, const GLuint *ids)
 162 {
 163    GLint i;
 164    GET_CURRENT_CONTEXT(ctx);
 165    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 166
 167    if (n < 0) {
 168       _mesa_error( ctx, GL_INVALID_VALUE, "glDeleteProgramsNV" );
 169       return;
 170    }
 171
 172    for (i = 0; i < n; i++) {
 173       if (ids[i] != 0) {
 174          struct gl_program *prog = _mesa_lookup_program(ctx, ids[i]);
 175          if (prog == &_mesa_DummyProgram) {
 176             _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
 177          }
 178          else if (prog) {
 179             /* Unbind program if necessary */
 180             if (prog->Target == GL_VERTEX_PROGRAM_ARB || /* == GL_VERTEX_PROGRAM_NV */
 181                 prog->Target == GL_VERTEX_STATE_PROGRAM_NV) {
 182                if (ctx->VertexProgram.Current &&
 183                    ctx->VertexProgram.Current->Base.Id == ids[i]) {
 184                   /* unbind this currently bound program */
 185                   _mesa_BindProgram(prog->Target, 0);
 186                }
 187             }
 188             else if (prog->Target == GL_FRAGMENT_PROGRAM_NV ||
 189                      prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
 190                if (ctx->FragmentProgram.Current &&
 191                    ctx->FragmentProgram.Current->Base.Id == ids[i]) {
 192                   /* unbind this currently bound program */
 193                   _mesa_BindProgram(prog->Target, 0);
 194                }
 195             }
 196             else {
 197                _mesa_problem(ctx, "bad target in glDeleteProgramsNV");
 198                return;
 199             }
 200             /* The ID is immediately available for re-use now */
 201             _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
 202             _mesa_reference_program(ctx, &prog, NULL);
 203          }
 204       }
 205    }
 206 }
 207
 208
 209 /**
 210  * Generate a list of new program identifiers.
 211  * \note Not compiled into display lists.
 212  * \note Called by both glGenProgramsNV and glGenProgramsARB.
 213  */
 214 void GLAPIENTRY
 215 _mesa_GenPrograms(GLsizei n, GLuint *ids)
 216 {
 217    GLuint first;
 218    GLuint i;
 219    GET_CURRENT_CONTEXT(ctx);
 220    ASSERT_OUTSIDE_BEGIN_END(ctx);
 221
 222    if (n < 0) {
 223       _mesa_error(ctx, GL_INVALID_VALUE, "glGenPrograms");
 224       return;
 225    }
 226
 227    if (!ids)
 228       return;
 229
 230    first = _mesa_HashFindFreeKeyBlock(ctx->Shared->Programs, n);
 231
 232    /* Insert pointer to dummy program as placeholder */
 233    for (i = 0; i < (GLuint) n; i++) {
 234       _mesa_HashInsert(ctx->Shared->Programs, first + i, &_mesa_DummyProgram);
 235    }
 236
 237    /* Return the program names */
 238    for (i = 0; i < (GLuint) n; i++) {
 239       ids[i] = first + i;
 240    }
 241 }
 242
 243
 244 void GLAPIENTRY
 245 _mesa_EnableVertexAttribArrayARB(GLuint index)
 246 {
 247    GET_CURRENT_CONTEXT(ctx);
 248    ASSERT_OUTSIDE_BEGIN_END(ctx);
 249
 250    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 251       _mesa_error(ctx, GL_INVALID_VALUE,
 252                   "glEnableVertexAttribArrayARB(index)");
 253       return;
 254    }
 255
 256    FLUSH_VERTICES(ctx, _NEW_ARRAY);
 257    ctx->Array.ArrayObj->VertexAttrib[index].Enabled = GL_TRUE;
 258    ctx->Array.ArrayObj->_Enabled |= _NEW_ARRAY_ATTRIB(index);
 259    ctx->Array.NewState |= _NEW_ARRAY_ATTRIB(index);
 260 }
 261
 262
 263 void GLAPIENTRY
 264 _mesa_DisableVertexAttribArrayARB(GLuint index)
 265 {
 266    GET_CURRENT_CONTEXT(ctx);
 267    ASSERT_OUTSIDE_BEGIN_END(ctx);
 268
 269    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 270       _mesa_error(ctx, GL_INVALID_VALUE,
 271                   "glEnableVertexAttribArrayARB(index)");
 272       return;
 273    }
 274
 275    FLUSH_VERTICES(ctx, _NEW_ARRAY);
 276    ctx->Array.ArrayObj->VertexAttrib[index].Enabled = GL_FALSE;
 277    ctx->Array.ArrayObj->_Enabled &= ~_NEW_ARRAY_ATTRIB(index);
 278    ctx->Array.NewState |= _NEW_ARRAY_ATTRIB(index);
 279 }
 280
 281
 282 void GLAPIENTRY
 283 _mesa_GetVertexAttribdvARB(GLuint index, GLenum pname, GLdouble *params)
 284 {
 285    GLfloat fparams[4];
 286    GET_CURRENT_CONTEXT(ctx);
 287    ASSERT_OUTSIDE_BEGIN_END(ctx);
 288
 289    _mesa_GetVertexAttribfvARB(index, pname, fparams);
 290    if (ctx->ErrorValue == GL_NO_ERROR) {
 291       if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 292          COPY_4V(params, fparams);
 293       }
 294       else {
 295          params[0] = fparams[0];
 296       }
 297    }
 298 }
 299
 300
 301 void GLAPIENTRY
 302 _mesa_GetVertexAttribfvARB(GLuint index, GLenum pname, GLfloat *params)
 303 {
 304    GET_CURRENT_CONTEXT(ctx);
 305    ASSERT_OUTSIDE_BEGIN_END(ctx);
 306
 307    if (index >= MAX_VERTEX_PROGRAM_ATTRIBS) {
 308       _mesa_error(ctx, GL_INVALID_VALUE, "glGetVertexAttribfvARB(index)");
 309       return;
 310    }
 311
 312    switch (pname) {
 313       case GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB:
 314          params[0] = (GLfloat) ctx->Array.ArrayObj->VertexAttrib[index].Enabled;
 315          break;
 316       case GL_VERTEX_ATTRIB_ARRAY_SIZE_ARB:
 317          params[0] = (GLfloat) ctx->Array.ArrayObj->VertexAttrib[index].Size;
 318          break;
 319       case GL_VERTEX_ATTRIB_ARRAY_STRIDE_ARB:
 320          params[0] = (GLfloat) ctx->Array.ArrayObj->VertexAttrib[index].Stride;
 321          break;
 322       case GL_VERTEX_ATTRIB_ARRAY_TYPE_ARB:
 323          params[0] = (GLfloat) ctx->Array.ArrayObj->VertexAttrib[index].Type;
 324          break;
 325       case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED_ARB:
 326          params[0] = ctx->Array.ArrayObj->VertexAttrib[index].Normalized;
 327          break;
 328       case GL_CURRENT_VERTEX_ATTRIB_ARB:
 329          if (index == 0) {
 330             _mesa_error(ctx, GL_INVALID_OPERATION,
 331                         "glGetVertexAttribfvARB(index==0)");
 332             return;
 333          }
 334          FLUSH_CURRENT(ctx, 0);
 335          COPY_4V(params, ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + index]);
 336          break;
 337       case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB:
 338          params[0] = (GLfloat) ctx->Array.ArrayObj->VertexAttrib[index].BufferObj->Name;
 339          break;
 340       default:
 341          _mesa_error(ctx, GL_INVALID_ENUM, "glGetVertexAttribfvARB(pname)");
 342          return;
 343    }
 344 }
 345
 346
 347 void GLAPIENTRY
 348 _mesa_GetVertexAttribivARB(GLuint index, GLenum pname, GLint *params)
 349 {
 350    GLfloat fparams[4];
 351    GET_CURRENT_CONTEXT(ctx);
 352    ASSERT_OUTSIDE_BEGIN_END(ctx);
 353
 354    _mesa_GetVertexAttribfvARB(index, pname, fparams);
 355    if (ctx->ErrorValue == GL_NO_ERROR) {
 356       if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 357          COPY_4V_CAST(params, fparams, GLint);  /* float to int */
 358       }
 359       else {
 360          params[0] = (GLint) fparams[0];
 361       }
 362    }
 363 }
 364
 365
 366 void GLAPIENTRY
 367 _mesa_GetVertexAttribPointervARB(GLuint index, GLenum pname, GLvoid **pointer)
 368 {
 369    GET_CURRENT_CONTEXT(ctx);
 370    ASSERT_OUTSIDE_BEGIN_END(ctx);
 371
 372    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 373       _mesa_error(ctx, GL_INVALID_VALUE, "glGetVertexAttribPointerARB(index)");
 374       return;
 375    }
 376
 377    if (pname != GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB) {
 378       _mesa_error(ctx, GL_INVALID_ENUM, "glGetVertexAttribPointerARB(pname)");
 379       return;
 380    }
 381
 382    *pointer = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[index].Ptr;
 383 }
 384
 385
 386 /**
 387  * Determine if id names a vertex or fragment program.
 388  * \note Not compiled into display lists.
 389  * \note Called from both glIsProgramNV and glIsProgramARB.
 390  * \param id is the program identifier
 391  * \return GL_TRUE if id is a program, else GL_FALSE.
 392  */
 393 GLboolean GLAPIENTRY
 394 _mesa_IsProgramARB(GLuint id)
 395 {
 396    struct gl_program *prog = NULL;
 397    GET_CURRENT_CONTEXT(ctx);
 398    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 399
 400    if (id == 0)
 401       return GL_FALSE;
 402
 403    prog = _mesa_lookup_program(ctx, id);
 404    if (prog && (prog != &_mesa_DummyProgram))
 405       return GL_TRUE;
 406    else
 407       return GL_FALSE;
 408 }
 409
 410
 411 void GLAPIENTRY
 412 _mesa_ProgramStringARB(GLenum target, GLenum format, GLsizei len,
 413                        const GLvoid *string)
 414 {
 415    GET_CURRENT_CONTEXT(ctx);
 416    ASSERT_OUTSIDE_BEGIN_END(ctx);
 417
 418    FLUSH_VERTICES(ctx, _NEW_PROGRAM);
 419
 420    if (format != GL_PROGRAM_FORMAT_ASCII_ARB) {
 421       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramStringARB(format)");
 422       return;
 423    }
 424
 425    if (target == GL_VERTEX_PROGRAM_ARB
 426        && ctx->Extensions.ARB_vertex_program) {
 427       struct gl_vertex_program *prog = ctx->VertexProgram.Current;
 428       _mesa_parse_arb_vertex_program(ctx, target, string, len, prog);
 429
 430       if (ctx->Program.ErrorPos == -1 && ctx->Driver.ProgramStringNotify)
 431          ctx->Driver.ProgramStringNotify( ctx, target, &prog->Base );
 432    }
 433    else if (target == GL_FRAGMENT_PROGRAM_ARB
 434             && ctx->Extensions.ARB_fragment_program) {
 435       struct gl_fragment_program *prog = ctx->FragmentProgram.Current;
 436       _mesa_parse_arb_fragment_program(ctx, target, string, len, prog);
 437
 438       if (ctx->Program.ErrorPos == -1 && ctx->Driver.ProgramStringNotify)
 439          ctx->Driver.ProgramStringNotify( ctx, target, &prog->Base );
 440    }
 441    else {
 442       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramStringARB(target)");
 443       return;
 444    }
 445 }
 446
 447
 448 /**
 449  * Set a program env parameter register.
 450  * \note Called from the GL API dispatcher.
 451  * Note, this function is also used by the GL_NV_vertex_program extension
 452  * (alias to ProgramParameterdNV)
 453  */
 454 void GLAPIENTRY
 455 _mesa_ProgramEnvParameter4dARB(GLenum target, GLuint index,
 456                                GLdouble x, GLdouble y, GLdouble z, GLdouble w)
 457 {
 458    _mesa_ProgramEnvParameter4fARB(target, index, (GLfloat) x, (GLfloat) y,
 459                                   (GLfloat) z, (GLfloat) w);
 460 }
 461
 462
 463 /**
 464  * Set a program env parameter register.
 465  * \note Called from the GL API dispatcher.
 466  * Note, this function is also used by the GL_NV_vertex_program extension
 467  * (alias to ProgramParameterdvNV)
 468  */
 469 void GLAPIENTRY
 470 _mesa_ProgramEnvParameter4dvARB(GLenum target, GLuint index,
 471                                 const GLdouble *params)
 472 {
 473    _mesa_ProgramEnvParameter4fARB(target, index, (GLfloat) params[0],
 474                                   (GLfloat) params[1], (GLfloat) params[2],
 475                                   (GLfloat) params[3]);
 476 }
 477
 478
 479 /**
 480  * Set a program env parameter register.
 481  * \note Called from the GL API dispatcher.
 482  * Note, this function is also used by the GL_NV_vertex_program extension
 483  * (alias to ProgramParameterfNV)
 484  */
 485 void GLAPIENTRY
 486 _mesa_ProgramEnvParameter4fARB(GLenum target, GLuint index,
 487                                GLfloat x, GLfloat y, GLfloat z, GLfloat w)
 488 {
 489    GET_CURRENT_CONTEXT(ctx);
 490    ASSERT_OUTSIDE_BEGIN_END(ctx);
 491
 492    FLUSH_VERTICES(ctx, _NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS);
 493
 494    if (target == GL_FRAGMENT_PROGRAM_ARB
 495        && ctx->Extensions.ARB_fragment_program) {
 496       if (index >= ctx->Const.FragmentProgram.MaxEnvParams) {
 497          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameter(index)");
 498          return;
 499       }
 500       ASSIGN_4V(ctx->FragmentProgram.Parameters[index], x, y, z, w);
 501    }
 502    else if (target == GL_VERTEX_PROGRAM_ARB /* == GL_VERTEX_PROGRAM_NV */
 503        && (ctx->Extensions.ARB_vertex_program || ctx->Extensions.NV_vertex_program)) {
 504       if (index >= ctx->Const.VertexProgram.MaxEnvParams) {
 505          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameter(index)");
 506          return;
 507       }
 508       ASSIGN_4V(ctx->VertexProgram.Parameters[index], x, y, z, w);
 509    }
 510    else {
 511       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramEnvParameter(target)");
 512       return;
 513    }
 514 }
 515
 516 /**
 517  * Set a program env parameter register.
 518  * \note Called from the GL API dispatcher.
 519  * Note, this function is also used by the GL_NV_vertex_program extension
 520  * (alias to ProgramParameterfvNV)
 521  */
 522 void GLAPIENTRY
 523 _mesa_ProgramEnvParameter4fvARB(GLenum target, GLuint index,
 524                                    const GLfloat *params)
 525 {
 526    _mesa_ProgramEnvParameter4fARB(target, index, params[0], params[1],
 527                                   params[2], params[3]);
 528 }
 529
 530
 531 void GLAPIENTRY
 532 _mesa_ProgramEnvParameters4fvEXT(GLenum target, GLuint index, GLsizei count,
 533                                  const GLfloat *params)
 534 {
 535    GET_CURRENT_CONTEXT(ctx);
 536    GLint i;
 537    GLfloat * dest;
 538    ASSERT_OUTSIDE_BEGIN_END(ctx);
 539
 540    FLUSH_VERTICES(ctx, _NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS);
 541
 542    if (count <= 0) {
 543       _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(count)");
 544    }
 545
 546    if (target == GL_FRAGMENT_PROGRAM_ARB
 547        && ctx->Extensions.ARB_fragment_program) {
 548       if ((index + count) > ctx->Const.FragmentProgram.MaxEnvParams) {
 549          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(index + count)");
 550          return;
 551       }
 552       dest = ctx->FragmentProgram.Parameters[index];
 553    }
 554    else if (target == GL_VERTEX_PROGRAM_ARB
 555        && ctx->Extensions.ARB_vertex_program) {
 556       if ((index + count) > ctx->Const.VertexProgram.MaxEnvParams) {
 557          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(index + count)");
 558          return;
 559       }
 560       dest = ctx->VertexProgram.Parameters[index];
 561    }
 562    else {
 563       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramEnvParameters4fv(target)");
 564       return;
 565    }
 566
 567    for ( i = 0 ; i < count ; i++ ) {
 568       COPY_4V(dest, params);
 569       params += 4;
 570       dest += 4;
 571    }
 572 }
 573
 574
 575 void GLAPIENTRY
 576 _mesa_GetProgramEnvParameterdvARB(GLenum target, GLuint index,
 577                                   GLdouble *params)
 578 {
 579    GET_CURRENT_CONTEXT(ctx);
 580    GLfloat fparams[4];
 581
 582    _mesa_GetProgramEnvParameterfvARB(target, index, fparams);
 583    if (ctx->ErrorValue == GL_NO_ERROR) {
 584       params[0] = fparams[0];
 585       params[1] = fparams[1];
 586       params[2] = fparams[2];
 587       params[3] = fparams[3];
 588    }
 589 }
 590
 591
 592 void GLAPIENTRY
 593 _mesa_GetProgramEnvParameterfvARB(GLenum target, GLuint index,
 594                                   GLfloat *params)
 595 {
 596    GET_CURRENT_CONTEXT(ctx);
 597
 598    ASSERT_OUTSIDE_BEGIN_END(ctx);
 599
 600    if (target == GL_FRAGMENT_PROGRAM_ARB
 601        && ctx->Extensions.ARB_fragment_program) {
 602       if (index >= ctx->Const.FragmentProgram.MaxEnvParams) {
 603          _mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramEnvParameter(index)");
 604          return;
 605       }
 606       COPY_4V(params, ctx->FragmentProgram.Parameters[index]);
 607    }
 608    else if (target == GL_VERTEX_PROGRAM_ARB
 609        && ctx->Extensions.ARB_vertex_program) {
 610       if (index >= ctx->Const.VertexProgram.MaxEnvParams) {
 611          _mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramEnvParameter(index)");
 612          return;
 613       }
 614       COPY_4V(params, ctx->VertexProgram.Parameters[index]);
 615    }
 616    else {
 617       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramEnvParameter(target)");
 618       return;
 619    }
 620 }
 621
 622
 623 /**
 624  * Note, this function is also used by the GL_NV_fragment_program extension.
 625  */
 626 void GLAPIENTRY
 627 _mesa_ProgramLocalParameter4fARB(GLenum target, GLuint index,
 628                                  GLfloat x, GLfloat y, GLfloat z, GLfloat w)
 629 {
 630    GET_CURRENT_CONTEXT(ctx);
 631    struct gl_program *prog;
 632    ASSERT_OUTSIDE_BEGIN_END(ctx);
 633
 634    FLUSH_VERTICES(ctx, _NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS);
 635
 636    if ((target == GL_FRAGMENT_PROGRAM_NV
 637         && ctx->Extensions.NV_fragment_program) ||
 638        (target == GL_FRAGMENT_PROGRAM_ARB
 639         && ctx->Extensions.ARB_fragment_program)) {
 640       if (index >= ctx->Const.FragmentProgram.MaxLocalParams) {
 641          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameterARB");
 642          return;
 643       }
 644       prog = &(ctx->FragmentProgram.Current->Base);
 645    }
 646    else if (target == GL_VERTEX_PROGRAM_ARB
 647             && ctx->Extensions.ARB_vertex_program) {
 648       if (index >= ctx->Const.VertexProgram.MaxLocalParams) {
 649          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameterARB");
 650          return;
 651       }
 652       prog = &(ctx->VertexProgram.Current->Base);
 653    }
 654    else {
 655       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramLocalParameterARB");
 656       return;
 657    }
 658
 659    ASSERT(index < MAX_PROGRAM_LOCAL_PARAMS);
 660    prog->LocalParams[index][0] = x;
 661    prog->LocalParams[index][1] = y;
 662    prog->LocalParams[index][2] = z;
 663    prog->LocalParams[index][3] = w;
 664 }
 665
 666
 667 /**
 668  * Note, this function is also used by the GL_NV_fragment_program extension.
 669  */
 670 void GLAPIENTRY
 671 _mesa_ProgramLocalParameter4fvARB(GLenum target, GLuint index,
 672                                   const GLfloat *params)
 673 {
 674    _mesa_ProgramLocalParameter4fARB(target, index, params[0], params[1],
 675                                     params[2], params[3]);
 676 }
 677
 678
 679 void GLAPIENTRY
 680 _mesa_ProgramLocalParameters4fvEXT(GLenum target, GLuint index, GLsizei count,
 681                                    const GLfloat *params)
 682 {
 683    GET_CURRENT_CONTEXT(ctx);
 684    struct gl_program *prog;
 685    GLint i;
 686    ASSERT_OUTSIDE_BEGIN_END(ctx);
 687
 688    FLUSH_VERTICES(ctx, _NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS);
 689
 690    if (count <= 0) {
 691       _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameters4fv(count)");
 692    }
 693
 694    if (target == GL_FRAGMENT_PROGRAM_ARB
 695        && ctx->Extensions.ARB_fragment_program) {
 696       if ((index + count) > ctx->Const.FragmentProgram.MaxLocalParams) {
 697          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameters4fvEXT(index + count)");
 698          return;
 699       }
 700       prog = &(ctx->FragmentProgram.Current->Base);
 701    }
 702    else if (target == GL_VERTEX_PROGRAM_ARB
 703             && ctx->Extensions.ARB_vertex_program) {
 704       if ((index + count) > ctx->Const.VertexProgram.MaxLocalParams) {
 705          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameters4fvEXT(index + count)");
 706          return;
 707       }
 708       prog = &(ctx->VertexProgram.Current->Base);
 709    }
 710    else {
 711       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramLocalParameters4fvEXT(target)");
 712       return;
 713    }
 714
 715    for (i = 0; i < count; i++) {
 716       ASSERT((index + i) < MAX_PROGRAM_LOCAL_PARAMS);
 717       COPY_4V(prog->LocalParams[index + i], params);
 718       params += 4;
 719    }
 720 }
 721
 722
 723 /**
 724  * Note, this function is also used by the GL_NV_fragment_program extension.
 725  */
 726 void GLAPIENTRY
 727 _mesa_ProgramLocalParameter4dARB(GLenum target, GLuint index,
 728                                  GLdouble x, GLdouble y,
 729                                  GLdouble z, GLdouble w)
 730 {
 731    _mesa_ProgramLocalParameter4fARB(target, index, (GLfloat) x, (GLfloat) y,
 732                                     (GLfloat) z, (GLfloat) w);
 733 }
 734
 735
 736 /**
 737  * Note, this function is also used by the GL_NV_fragment_program extension.
 738  */
 739 void GLAPIENTRY
 740 _mesa_ProgramLocalParameter4dvARB(GLenum target, GLuint index,
 741                                   const GLdouble *params)
 742 {
 743    _mesa_ProgramLocalParameter4fARB(target, index,
 744                                     (GLfloat) params[0], (GLfloat) params[1],
 745                                     (GLfloat) params[2], (GLfloat) params[3]);
 746 }
 747
 748
 749 /**
 750  * Note, this function is also used by the GL_NV_fragment_program extension.
 751  */
 752 void GLAPIENTRY
 753 _mesa_GetProgramLocalParameterfvARB(GLenum target, GLuint index,
 754                                     GLfloat *params)
 755 {
 756    const struct gl_program *prog;
 757    GLuint maxParams;
 758    GET_CURRENT_CONTEXT(ctx);
 759    ASSERT_OUTSIDE_BEGIN_END(ctx);
 760
 761    if (target == GL_VERTEX_PROGRAM_ARB
 762        && ctx->Extensions.ARB_vertex_program) {
 763       prog = &(ctx->VertexProgram.Current->Base);
 764       maxParams = ctx->Const.VertexProgram.MaxLocalParams;
 765    }
 766    else if (target == GL_FRAGMENT_PROGRAM_ARB
 767             && ctx->Extensions.ARB_fragment_program) {
 768       prog = &(ctx->FragmentProgram.Current->Base);
 769       maxParams = ctx->Const.FragmentProgram.MaxLocalParams;
 770    }
 771    else if (target == GL_FRAGMENT_PROGRAM_NV
 772             && ctx->Extensions.NV_fragment_program) {
 773       prog = &(ctx->FragmentProgram.Current->Base);
 774       maxParams = MAX_NV_FRAGMENT_PROGRAM_PARAMS;
 775    }
 776    else {
 777       _mesa_error(ctx, GL_INVALID_ENUM,
 778                   "glGetProgramLocalParameterARB(target)");
 779       return;
 780    }
 781
 782    if (index >= maxParams) {
 783       _mesa_error(ctx, GL_INVALID_VALUE,
 784                   "glGetProgramLocalParameterARB(index)");
 785       return;
 786    }
 787
 788    ASSERT(prog);
 789    ASSERT(index < MAX_PROGRAM_LOCAL_PARAMS);
 790    COPY_4V(params, prog->LocalParams[index]);
 791 }
 792
 793
 794 /**
 795  * Note, this function is also used by the GL_NV_fragment_program extension.
 796  */
 797 void GLAPIENTRY
 798 _mesa_GetProgramLocalParameterdvARB(GLenum target, GLuint index,
 799                                     GLdouble *params)
 800 {
 801    GET_CURRENT_CONTEXT(ctx);
 802    GLfloat floatParams[4];
 803    ASSIGN_4V(floatParams, 0.0F, 0.0F, 0.0F, 0.0F);
 804    _mesa_GetProgramLocalParameterfvARB(target, index, floatParams);
 805    if (ctx->ErrorValue == GL_NO_ERROR) {
 806       COPY_4V(params, floatParams);
 807    }
 808 }
 809
 810
 811 void GLAPIENTRY
 812 _mesa_GetProgramivARB(GLenum target, GLenum pname, GLint *params)
 813 {
 814    const struct gl_program_constants *limits;
 815    struct gl_program *prog;
 816    GET_CURRENT_CONTEXT(ctx);
 817
 818    ASSERT_OUTSIDE_BEGIN_END(ctx);
 819
 820    if (target == GL_VERTEX_PROGRAM_ARB
 821        && ctx->Extensions.ARB_vertex_program) {
 822       prog = &(ctx->VertexProgram.Current->Base);
 823       limits = &ctx->Const.VertexProgram;
 824    }
 825    else if (target == GL_FRAGMENT_PROGRAM_ARB
 826             && ctx->Extensions.ARB_fragment_program) {
 827       prog = &(ctx->FragmentProgram.Current->Base);
 828       limits = &ctx->Const.FragmentProgram;
 829    }
 830    else {
 831       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(target)");
 832       return;
 833    }
 834
 835    ASSERT(prog);
 836    ASSERT(limits);
 837
 838    /* Queries supported for both vertex and fragment programs */
 839    switch (pname) {
 840       case GL_PROGRAM_LENGTH_ARB:
 841          *params
 842             = prog->String ? (GLint) _mesa_strlen((char *) prog->String) : 0;
 843          return;
 844       case GL_PROGRAM_FORMAT_ARB:
 845          *params = prog->Format;
 846          return;
 847       case GL_PROGRAM_BINDING_ARB:
 848          *params = prog->Id;
 849          return;
 850       case GL_PROGRAM_INSTRUCTIONS_ARB:
 851          *params = prog->NumInstructions;
 852          return;
 853       case GL_MAX_PROGRAM_INSTRUCTIONS_ARB:
 854          *params = limits->MaxInstructions;
 855          return;
 856       case GL_PROGRAM_NATIVE_INSTRUCTIONS_ARB:
 857          *params = prog->NumNativeInstructions;
 858          return;
 859       case GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB:
 860          *params = limits->MaxNativeInstructions;
 861          return;
 862       case GL_PROGRAM_TEMPORARIES_ARB:
 863          *params = prog->NumTemporaries;
 864          return;
 865       case GL_MAX_PROGRAM_TEMPORARIES_ARB:
 866          *params = limits->MaxTemps;
 867          return;
 868       case GL_PROGRAM_NATIVE_TEMPORARIES_ARB:
 869          *params = prog->NumNativeTemporaries;
 870          return;
 871       case GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB:
 872          *params = limits->MaxNativeTemps;
 873          return;
 874       case GL_PROGRAM_PARAMETERS_ARB:
 875          *params = prog->NumParameters;
 876          return;
 877       case GL_MAX_PROGRAM_PARAMETERS_ARB:
 878          *params = limits->MaxParameters;
 879          return;
 880       case GL_PROGRAM_NATIVE_PARAMETERS_ARB:
 881          *params = prog->NumNativeParameters;
 882          return;
 883       case GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB:
 884          *params = limits->MaxNativeParameters;
 885          return;
 886       case GL_PROGRAM_ATTRIBS_ARB:
 887          *params = prog->NumAttributes;
 888          return;
 889       case GL_MAX_PROGRAM_ATTRIBS_ARB:
 890          *params = limits->MaxAttribs;
 891          return;
 892       case GL_PROGRAM_NATIVE_ATTRIBS_ARB:
 893          *params = prog->NumNativeAttributes;
 894          return;
 895       case GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB:
 896          *params = limits->MaxNativeAttribs;
 897          return;
 898       case GL_PROGRAM_ADDRESS_REGISTERS_ARB:
 899          *params = prog->NumAddressRegs;
 900          return;
 901       case GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB:
 902          *params = limits->MaxAddressRegs;
 903          return;
 904       case GL_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB:
 905          *params = prog->NumNativeAddressRegs;
 906          return;
 907       case GL_MAX_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB:
 908          *params = limits->MaxNativeAddressRegs;
 909          return;
 910       case GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB:
 911          *params = limits->MaxLocalParams;
 912          return;
 913       case GL_MAX_PROGRAM_ENV_PARAMETERS_ARB:
 914          *params = limits->MaxEnvParams;
 915          return;
 916       case GL_PROGRAM_UNDER_NATIVE_LIMITS_ARB:
 917          /*
 918           * XXX we may not really need a driver callback here.
 919           * If the number of native instructions, registers, etc. used
 920           * are all below the maximums, we could return true.
 921           * The spec says that even if this query returns true, there's
 922           * no guarantee that the program will run in hardware.
 923           */
 924          if (prog->Id == 0) {
 925             /* default/null program */
 926             *params = GL_FALSE;
 927          }
 928          else if (ctx->Driver.IsProgramNative) {
 929             /* ask the driver */
 930             *params = ctx->Driver.IsProgramNative( ctx, target, prog );
 931          }
 932          else {
 933             /* probably running in software */
 934             *params = GL_TRUE;
 935          }
 936          return;
 937       default:
 938          /* continue with fragment-program only queries below */
 939          break;
 940    }
 941
 942    /*
 943     * The following apply to fragment programs only (at this time)
 944     */
 945    if (target == GL_FRAGMENT_PROGRAM_ARB) {
 946       const struct gl_fragment_program *fp = ctx->FragmentProgram.Current;
 947       switch (pname) {
 948          case GL_PROGRAM_ALU_INSTRUCTIONS_ARB:
 949             *params = fp->Base.NumNativeAluInstructions;
 950             return;
 951          case GL_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB:
 952             *params = fp->Base.NumAluInstructions;
 953             return;
 954          case GL_PROGRAM_TEX_INSTRUCTIONS_ARB:
 955             *params = fp->Base.NumTexInstructions;
 956             return;
 957          case GL_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB:
 958             *params = fp->Base.NumNativeTexInstructions;
 959             return;
 960          case GL_PROGRAM_TEX_INDIRECTIONS_ARB:
 961             *params = fp->Base.NumTexIndirections;
 962             return;
 963          case GL_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB:
 964             *params = fp->Base.NumNativeTexIndirections;
 965             return;
 966          case GL_MAX_PROGRAM_ALU_INSTRUCTIONS_ARB:
 967             *params = limits->MaxAluInstructions;
 968             return;
 969          case GL_MAX_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB:
 970             *params = limits->MaxNativeAluInstructions;
 971             return;
 972          case GL_MAX_PROGRAM_TEX_INSTRUCTIONS_ARB:
 973             *params = limits->MaxTexInstructions;
 974             return;
 975          case GL_MAX_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB:
 976             *params = limits->MaxNativeTexInstructions;
 977             return;
 978          case GL_MAX_PROGRAM_TEX_INDIRECTIONS_ARB:
 979             *params = limits->MaxTexIndirections;
 980             return;
 981          case GL_MAX_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB:
 982             *params = limits->MaxNativeTexIndirections;
 983             return;
 984          default:
 985             _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(pname)");
 986             return;
 987       }
 988    }
 989 }
 990
 991
 992 void GLAPIENTRY
 993 _mesa_GetProgramStringARB(GLenum target, GLenum pname, GLvoid *string)
 994 {
 995    const struct gl_program *prog;
 996    char *dst = (char *) string;
 997    GET_CURRENT_CONTEXT(ctx);
 998
 999    ASSERT_OUTSIDE_BEGIN_END(ctx);
1000
1001    if (target == GL_VERTEX_PROGRAM_ARB) {
1002       prog = &(ctx->VertexProgram.Current->Base);
1003    }
1004    else if (target == GL_FRAGMENT_PROGRAM_ARB) {
1005       prog = &(ctx->FragmentProgram.Current->Base);
1006    }
1007    else {
1008       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramStringARB(target)");
1009       return;
1010    }
1011
1012    ASSERT(prog);
1013
1014    if (pname != GL_PROGRAM_STRING_ARB) {
1015       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramStringARB(pname)");
1016       return;
1017    }
1018
1019    if (prog->String)
1020       _mesa_memcpy(dst, prog->String, _mesa_strlen((char *) prog->String));
1021    else
1022       *dst = '\0';
1023 }