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    /* Error-check target and get curProg */
  78    if ((target == GL_VERTEX_PROGRAM_ARB) && /* == GL_VERTEX_PROGRAM_NV */
  79         (ctx->Extensions.NV_vertex_program ||
  80          ctx->Extensions.ARB_vertex_program)) {
  81       curProg = &ctx->VertexProgram.Current->Base;
  82    }
  83    else if ((target == GL_FRAGMENT_PROGRAM_NV
  84              && ctx->Extensions.NV_fragment_program) ||
  85             (target == GL_FRAGMENT_PROGRAM_ARB
  86              && ctx->Extensions.ARB_fragment_program)) {
  87       curProg = &ctx->FragmentProgram.Current->Base;
  88    }
  89    else {
  90       _mesa_error(ctx, GL_INVALID_ENUM, "glBindProgramNV/ARB(target)");
  91       return;
  92    }
  93
  94    /*
  95     * Get pointer to new program to bind.
  96     * NOTE: binding to a non-existant program is not an error.
  97     * That's supposed to be caught in glBegin.
  98     */
  99    if (id == 0) {
 100       /* Bind a default program */
 101       newProg = NULL;
 102       if (target == GL_VERTEX_PROGRAM_ARB) /* == GL_VERTEX_PROGRAM_NV */
 103          newProg = &ctx->Shared->DefaultVertexProgram->Base;
 104       else
 105          newProg = &ctx->Shared->DefaultFragmentProgram->Base;
 106    }
 107    else {
 108       /* Bind a user program */
 109       newProg = _mesa_lookup_program(ctx, id);
 110       if (!newProg || newProg == &_mesa_DummyProgram) {
 111          /* allocate a new program now */
 112          newProg = ctx->Driver.NewProgram(ctx, target, id);
 113          if (!newProg) {
 114             _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindProgramNV/ARB");
 115             return;
 116          }
 117          _mesa_HashInsert(ctx->Shared->Programs, id, newProg);
 118       }
 119       else if (!compatible_program_targets(newProg->Target, target)) {
 120          _mesa_error(ctx, GL_INVALID_OPERATION,
 121                      "glBindProgramNV/ARB(target mismatch)");
 122          return;
 123       }
 124    }
 125
 126    /** All error checking is complete now **/
 127
 128    if (curProg->Id == id) {
 129       /* binding same program - no change */
 130       return;
 131    }
 132
 133    /* signal new program (and its new constants) */
 134    FLUSH_VERTICES(ctx, _NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS);
 135
 136    /* bind newProg */
 137    if (target == GL_VERTEX_PROGRAM_ARB) { /* == GL_VERTEX_PROGRAM_NV */
 138       _mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current,
 139                                (struct gl_vertex_program *) newProg);
 140    }
 141    else if (target == GL_FRAGMENT_PROGRAM_NV ||
 142             target == GL_FRAGMENT_PROGRAM_ARB) {
 143       _mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current,
 144                                (struct gl_fragment_program *) newProg);
 145    }
 146
 147    /* Never null pointers */
 148    ASSERT(ctx->VertexProgram.Current);
 149    ASSERT(ctx->FragmentProgram.Current);
 150
 151    if (ctx->Driver.BindProgram)
 152       ctx->Driver.BindProgram(ctx, target, newProg);
 153 }
 154
 155
 156 /**
 157  * Delete a list of programs.
 158  * \note Not compiled into display lists.
 159  * \note Called by both glDeleteProgramsNV and glDeleteProgramsARB.
 160  */
 161 void GLAPIENTRY
 162 _mesa_DeletePrograms(GLsizei n, const GLuint *ids)
 163 {
 164    GLint i;
 165    GET_CURRENT_CONTEXT(ctx);
 166    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 167
 168    if (n < 0) {
 169       _mesa_error( ctx, GL_INVALID_VALUE, "glDeleteProgramsNV" );
 170       return;
 171    }
 172
 173    for (i = 0; i < n; i++) {
 174       if (ids[i] != 0) {
 175          struct gl_program *prog = _mesa_lookup_program(ctx, ids[i]);
 176          if (prog == &_mesa_DummyProgram) {
 177             _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
 178          }
 179          else if (prog) {
 180             /* Unbind program if necessary */
 181             if (prog->Target == GL_VERTEX_PROGRAM_ARB || /* == GL_VERTEX_PROGRAM_NV */
 182                 prog->Target == GL_VERTEX_STATE_PROGRAM_NV) {
 183                if (ctx->VertexProgram.Current &&
 184                    ctx->VertexProgram.Current->Base.Id == ids[i]) {
 185                   /* unbind this currently bound program */
 186                   _mesa_BindProgram(prog->Target, 0);
 187                }
 188             }
 189             else if (prog->Target == GL_FRAGMENT_PROGRAM_NV ||
 190                      prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
 191                if (ctx->FragmentProgram.Current &&
 192                    ctx->FragmentProgram.Current->Base.Id == ids[i]) {
 193                   /* unbind this currently bound program */
 194                   _mesa_BindProgram(prog->Target, 0);
 195                }
 196             }
 197             else {
 198                _mesa_problem(ctx, "bad target in glDeleteProgramsNV");
 199                return;
 200             }
 201             /* The ID is immediately available for re-use now */
 202             _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
 203             _mesa_reference_program(ctx, &prog, NULL);
 204          }
 205       }
 206    }
 207 }
 208
 209
 210 /**
 211  * Generate a list of new program identifiers.
 212  * \note Not compiled into display lists.
 213  * \note Called by both glGenProgramsNV and glGenProgramsARB.
 214  */
 215 void GLAPIENTRY
 216 _mesa_GenPrograms(GLsizei n, GLuint *ids)
 217 {
 218    GLuint first;
 219    GLuint i;
 220    GET_CURRENT_CONTEXT(ctx);
 221    ASSERT_OUTSIDE_BEGIN_END(ctx);
 222
 223    if (n < 0) {
 224       _mesa_error(ctx, GL_INVALID_VALUE, "glGenPrograms");
 225       return;
 226    }
 227
 228    if (!ids)
 229       return;
 230
 231    first = _mesa_HashFindFreeKeyBlock(ctx->Shared->Programs, n);
 232
 233    /* Insert pointer to dummy program as placeholder */
 234    for (i = 0; i < (GLuint) n; i++) {
 235       _mesa_HashInsert(ctx->Shared->Programs, first + i, &_mesa_DummyProgram);
 236    }
 237
 238    /* Return the program names */
 239    for (i = 0; i < (GLuint) n; i++) {
 240       ids[i] = first + i;
 241    }
 242 }
 243
 244
 245 void GLAPIENTRY
 246 _mesa_EnableVertexAttribArrayARB(GLuint index)
 247 {
 248    GET_CURRENT_CONTEXT(ctx);
 249    ASSERT_OUTSIDE_BEGIN_END(ctx);
 250
 251    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 252       _mesa_error(ctx, GL_INVALID_VALUE,
 253                   "glEnableVertexAttribArrayARB(index)");
 254       return;
 255    }
 256
 257    FLUSH_VERTICES(ctx, _NEW_ARRAY);
 258    ctx->Array.ArrayObj->VertexAttrib[index].Enabled = GL_TRUE;
 259    ctx->Array.ArrayObj->_Enabled |= _NEW_ARRAY_ATTRIB(index);
 260    ctx->Array.NewState |= _NEW_ARRAY_ATTRIB(index);
 261 }
 262
 263
 264 void GLAPIENTRY
 265 _mesa_DisableVertexAttribArrayARB(GLuint index)
 266 {
 267    GET_CURRENT_CONTEXT(ctx);
 268    ASSERT_OUTSIDE_BEGIN_END(ctx);
 269
 270    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 271       _mesa_error(ctx, GL_INVALID_VALUE,
 272                   "glEnableVertexAttribArrayARB(index)");
 273       return;
 274    }
 275
 276    FLUSH_VERTICES(ctx, _NEW_ARRAY);
 277    ctx->Array.ArrayObj->VertexAttrib[index].Enabled = GL_FALSE;
 278    ctx->Array.ArrayObj->_Enabled &= ~_NEW_ARRAY_ATTRIB(index);
 279    ctx->Array.NewState |= _NEW_ARRAY_ATTRIB(index);
 280 }
 281
 282
 283 void GLAPIENTRY
 284 _mesa_GetVertexAttribdvARB(GLuint index, GLenum pname, GLdouble *params)
 285 {
 286    GLfloat fparams[4];
 287    GET_CURRENT_CONTEXT(ctx);
 288    ASSERT_OUTSIDE_BEGIN_END(ctx);
 289
 290    _mesa_GetVertexAttribfvARB(index, pname, fparams);
 291    if (ctx->ErrorValue == GL_NO_ERROR) {
 292       if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 293          COPY_4V(params, fparams);
 294       }
 295       else {
 296          params[0] = fparams[0];
 297       }
 298    }
 299 }
 300
 301
 302 void GLAPIENTRY
 303 _mesa_GetVertexAttribfvARB(GLuint index, GLenum pname, GLfloat *params)
 304 {
 305    GET_CURRENT_CONTEXT(ctx);
 306    ASSERT_OUTSIDE_BEGIN_END(ctx);
 307
 308    if (index >= MAX_VERTEX_PROGRAM_ATTRIBS) {
 309       _mesa_error(ctx, GL_INVALID_VALUE, "glGetVertexAttribfvARB(index)");
 310       return;
 311    }
 312
 313    switch (pname) {
 314       case GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB:
 315          params[0] = (GLfloat) ctx->Array.ArrayObj->VertexAttrib[index].Enabled;
 316          break;
 317       case GL_VERTEX_ATTRIB_ARRAY_SIZE_ARB:
 318          params[0] = (GLfloat) ctx->Array.ArrayObj->VertexAttrib[index].Size;
 319          break;
 320       case GL_VERTEX_ATTRIB_ARRAY_STRIDE_ARB:
 321          params[0] = (GLfloat) ctx->Array.ArrayObj->VertexAttrib[index].Stride;
 322          break;
 323       case GL_VERTEX_ATTRIB_ARRAY_TYPE_ARB:
 324          params[0] = (GLfloat) ctx->Array.ArrayObj->VertexAttrib[index].Type;
 325          break;
 326       case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED_ARB:
 327          params[0] = ctx->Array.ArrayObj->VertexAttrib[index].Normalized;
 328          break;
 329       case GL_CURRENT_VERTEX_ATTRIB_ARB:
 330          if (index == 0) {
 331             _mesa_error(ctx, GL_INVALID_OPERATION,
 332                         "glGetVertexAttribfvARB(index==0)");
 333             return;
 334          }
 335          FLUSH_CURRENT(ctx, 0);
 336          COPY_4V(params, ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + index]);
 337          break;
 338       case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB:
 339          params[0] = (GLfloat) ctx->Array.ArrayObj->VertexAttrib[index].BufferObj->Name;
 340          break;
 341       default:
 342          _mesa_error(ctx, GL_INVALID_ENUM, "glGetVertexAttribfvARB(pname)");
 343          return;
 344    }
 345 }
 346
 347
 348 void GLAPIENTRY
 349 _mesa_GetVertexAttribivARB(GLuint index, GLenum pname, GLint *params)
 350 {
 351    GLfloat fparams[4];
 352    GET_CURRENT_CONTEXT(ctx);
 353    ASSERT_OUTSIDE_BEGIN_END(ctx);
 354
 355    _mesa_GetVertexAttribfvARB(index, pname, fparams);
 356    if (ctx->ErrorValue == GL_NO_ERROR) {
 357       if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 358          COPY_4V_CAST(params, fparams, GLint);  /* float to int */
 359       }
 360       else {
 361          params[0] = (GLint) fparams[0];
 362       }
 363    }
 364 }
 365
 366
 367 void GLAPIENTRY
 368 _mesa_GetVertexAttribPointervARB(GLuint index, GLenum pname, GLvoid **pointer)
 369 {
 370    GET_CURRENT_CONTEXT(ctx);
 371    ASSERT_OUTSIDE_BEGIN_END(ctx);
 372
 373    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 374       _mesa_error(ctx, GL_INVALID_VALUE, "glGetVertexAttribPointerARB(index)");
 375       return;
 376    }
 377
 378    if (pname != GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB) {
 379       _mesa_error(ctx, GL_INVALID_ENUM, "glGetVertexAttribPointerARB(pname)");
 380       return;
 381    }
 382
 383    *pointer = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[index].Ptr;
 384 }
 385
 386
 387 /**
 388  * Determine if id names a vertex or fragment program.
 389  * \note Not compiled into display lists.
 390  * \note Called from both glIsProgramNV and glIsProgramARB.
 391  * \param id is the program identifier
 392  * \return GL_TRUE if id is a program, else GL_FALSE.
 393  */
 394 GLboolean GLAPIENTRY
 395 _mesa_IsProgramARB(GLuint id)
 396 {
 397    struct gl_program *prog = NULL;
 398    GET_CURRENT_CONTEXT(ctx);
 399    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 400
 401    if (id == 0)
 402       return GL_FALSE;
 403
 404    prog = _mesa_lookup_program(ctx, id);
 405    if (prog && (prog != &_mesa_DummyProgram))
 406       return GL_TRUE;
 407    else
 408       return GL_FALSE;
 409 }
 410
 411
 412 void GLAPIENTRY
 413 _mesa_ProgramStringARB(GLenum target, GLenum format, GLsizei len,
 414                        const GLvoid *string)
 415 {
 416    GET_CURRENT_CONTEXT(ctx);
 417    ASSERT_OUTSIDE_BEGIN_END(ctx);
 418
 419    FLUSH_VERTICES(ctx, _NEW_PROGRAM);
 420
 421    if (format != GL_PROGRAM_FORMAT_ASCII_ARB) {
 422       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramStringARB(format)");
 423       return;
 424    }
 425
 426    if (target == GL_VERTEX_PROGRAM_ARB
 427        && ctx->Extensions.ARB_vertex_program) {
 428       struct gl_vertex_program *prog = ctx->VertexProgram.Current;
 429       _mesa_parse_arb_vertex_program(ctx, target, string, len, prog);
 430
 431       if (ctx->Program.ErrorPos == -1 && ctx->Driver.ProgramStringNotify)
 432          ctx->Driver.ProgramStringNotify( ctx, target, &prog->Base );
 433    }
 434    else if (target == GL_FRAGMENT_PROGRAM_ARB
 435             && ctx->Extensions.ARB_fragment_program) {
 436       struct gl_fragment_program *prog = ctx->FragmentProgram.Current;
 437       _mesa_parse_arb_fragment_program(ctx, target, string, len, prog);
 438
 439       if (ctx->Program.ErrorPos == -1 && ctx->Driver.ProgramStringNotify)
 440          ctx->Driver.ProgramStringNotify( ctx, target, &prog->Base );
 441    }
 442    else {
 443       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramStringARB(target)");
 444       return;
 445    }
 446 }
 447
 448
 449 /**
 450  * Set a program env parameter register.
 451  * \note Called from the GL API dispatcher.
 452  * Note, this function is also used by the GL_NV_vertex_program extension
 453  * (alias to ProgramParameterdNV)
 454  */
 455 void GLAPIENTRY
 456 _mesa_ProgramEnvParameter4dARB(GLenum target, GLuint index,
 457                                GLdouble x, GLdouble y, GLdouble z, GLdouble w)
 458 {
 459    _mesa_ProgramEnvParameter4fARB(target, index, (GLfloat) x, (GLfloat) y,
 460                                   (GLfloat) z, (GLfloat) w);
 461 }
 462
 463
 464 /**
 465  * Set a program env parameter register.
 466  * \note Called from the GL API dispatcher.
 467  * Note, this function is also used by the GL_NV_vertex_program extension
 468  * (alias to ProgramParameterdvNV)
 469  */
 470 void GLAPIENTRY
 471 _mesa_ProgramEnvParameter4dvARB(GLenum target, GLuint index,
 472                                 const GLdouble *params)
 473 {
 474    _mesa_ProgramEnvParameter4fARB(target, index, (GLfloat) params[0],
 475                                   (GLfloat) params[1], (GLfloat) params[2],
 476                                   (GLfloat) params[3]);
 477 }
 478
 479
 480 /**
 481  * Set a program env parameter register.
 482  * \note Called from the GL API dispatcher.
 483  * Note, this function is also used by the GL_NV_vertex_program extension
 484  * (alias to ProgramParameterfNV)
 485  */
 486 void GLAPIENTRY
 487 _mesa_ProgramEnvParameter4fARB(GLenum target, GLuint index,
 488                                GLfloat x, GLfloat y, GLfloat z, GLfloat w)
 489 {
 490    GET_CURRENT_CONTEXT(ctx);
 491    ASSERT_OUTSIDE_BEGIN_END(ctx);
 492
 493    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 494
 495    if (target == GL_FRAGMENT_PROGRAM_ARB
 496        && ctx->Extensions.ARB_fragment_program) {
 497       if (index >= ctx->Const.FragmentProgram.MaxEnvParams) {
 498          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameter(index)");
 499          return;
 500       }
 501       ASSIGN_4V(ctx->FragmentProgram.Parameters[index], x, y, z, w);
 502    }
 503    else if (target == GL_VERTEX_PROGRAM_ARB /* == GL_VERTEX_PROGRAM_NV */
 504        && (ctx->Extensions.ARB_vertex_program || ctx->Extensions.NV_vertex_program)) {
 505       if (index >= ctx->Const.VertexProgram.MaxEnvParams) {
 506          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameter(index)");
 507          return;
 508       }
 509       ASSIGN_4V(ctx->VertexProgram.Parameters[index], x, y, z, w);
 510    }
 511    else {
 512       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramEnvParameter(target)");
 513       return;
 514    }
 515 }
 516
 517 /**
 518  * Set a program env parameter register.
 519  * \note Called from the GL API dispatcher.
 520  * Note, this function is also used by the GL_NV_vertex_program extension
 521  * (alias to ProgramParameterfvNV)
 522  */
 523 void GLAPIENTRY
 524 _mesa_ProgramEnvParameter4fvARB(GLenum target, GLuint index,
 525                                    const GLfloat *params)
 526 {
 527    _mesa_ProgramEnvParameter4fARB(target, index, params[0], params[1],
 528                                   params[2], params[3]);
 529 }
 530
 531
 532 void GLAPIENTRY
 533 _mesa_ProgramEnvParameters4fvEXT(GLenum target, GLuint index, GLsizei count,
 534                                  const GLfloat *params)
 535 {
 536    GET_CURRENT_CONTEXT(ctx);
 537    GLint i;
 538    GLfloat * dest;
 539    ASSERT_OUTSIDE_BEGIN_END(ctx);
 540
 541    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 542
 543    if (count <= 0) {
 544       _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(count)");
 545    }
 546
 547    if (target == GL_FRAGMENT_PROGRAM_ARB
 548        && ctx->Extensions.ARB_fragment_program) {
 549       if ((index + count) > ctx->Const.FragmentProgram.MaxEnvParams) {
 550          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(index + count)");
 551          return;
 552       }
 553       dest = ctx->FragmentProgram.Parameters[index];
 554    }
 555    else if (target == GL_VERTEX_PROGRAM_ARB
 556        && ctx->Extensions.ARB_vertex_program) {
 557       if ((index + count) > ctx->Const.VertexProgram.MaxEnvParams) {
 558          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(index + count)");
 559          return;
 560       }
 561       dest = ctx->VertexProgram.Parameters[index];
 562    }
 563    else {
 564       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramEnvParameters4fv(target)");
 565       return;
 566    }
 567
 568    for ( i = 0 ; i < count ; i++ ) {
 569       COPY_4V(dest, params);
 570       params += 4;
 571       dest += 4;
 572    }
 573 }
 574
 575
 576 void GLAPIENTRY
 577 _mesa_GetProgramEnvParameterdvARB(GLenum target, GLuint index,
 578                                   GLdouble *params)
 579 {
 580    GET_CURRENT_CONTEXT(ctx);
 581    GLfloat fparams[4];
 582
 583    _mesa_GetProgramEnvParameterfvARB(target, index, fparams);
 584    if (ctx->ErrorValue == GL_NO_ERROR) {
 585       params[0] = fparams[0];
 586       params[1] = fparams[1];
 587       params[2] = fparams[2];
 588       params[3] = fparams[3];
 589    }
 590 }
 591
 592
 593 void GLAPIENTRY
 594 _mesa_GetProgramEnvParameterfvARB(GLenum target, GLuint index,
 595                                   GLfloat *params)
 596 {
 597    GET_CURRENT_CONTEXT(ctx);
 598
 599    ASSERT_OUTSIDE_BEGIN_END(ctx);
 600
 601    if (target == GL_FRAGMENT_PROGRAM_ARB
 602        && ctx->Extensions.ARB_fragment_program) {
 603       if (index >= ctx->Const.FragmentProgram.MaxEnvParams) {
 604          _mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramEnvParameter(index)");
 605          return;
 606       }
 607       COPY_4V(params, ctx->FragmentProgram.Parameters[index]);
 608    }
 609    else if (target == GL_VERTEX_PROGRAM_ARB
 610        && ctx->Extensions.ARB_vertex_program) {
 611       if (index >= ctx->Const.VertexProgram.MaxEnvParams) {
 612          _mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramEnvParameter(index)");
 613          return;
 614       }
 615       COPY_4V(params, ctx->VertexProgram.Parameters[index]);
 616    }
 617    else {
 618       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramEnvParameter(target)");
 619       return;
 620    }
 621 }
 622
 623
 624 /**
 625  * Note, this function is also used by the GL_NV_fragment_program extension.
 626  */
 627 void GLAPIENTRY
 628 _mesa_ProgramLocalParameter4fARB(GLenum target, GLuint index,
 629                                  GLfloat x, GLfloat y, GLfloat z, GLfloat w)
 630 {
 631    GET_CURRENT_CONTEXT(ctx);
 632    struct gl_program *prog;
 633    ASSERT_OUTSIDE_BEGIN_END(ctx);
 634
 635    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 636
 637    if ((target == GL_FRAGMENT_PROGRAM_NV
 638         && ctx->Extensions.NV_fragment_program) ||
 639        (target == GL_FRAGMENT_PROGRAM_ARB
 640         && ctx->Extensions.ARB_fragment_program)) {
 641       if (index >= ctx->Const.FragmentProgram.MaxLocalParams) {
 642          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameterARB");
 643          return;
 644       }
 645       prog = &(ctx->FragmentProgram.Current->Base);
 646    }
 647    else if (target == GL_VERTEX_PROGRAM_ARB
 648             && ctx->Extensions.ARB_vertex_program) {
 649       if (index >= ctx->Const.VertexProgram.MaxLocalParams) {
 650          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameterARB");
 651          return;
 652       }
 653       prog = &(ctx->VertexProgram.Current->Base);
 654    }
 655    else {
 656       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramLocalParameterARB");
 657       return;
 658    }
 659
 660    ASSERT(index < MAX_PROGRAM_LOCAL_PARAMS);
 661    prog->LocalParams[index][0] = x;
 662    prog->LocalParams[index][1] = y;
 663    prog->LocalParams[index][2] = z;
 664    prog->LocalParams[index][3] = w;
 665 }
 666
 667
 668 /**
 669  * Note, this function is also used by the GL_NV_fragment_program extension.
 670  */
 671 void GLAPIENTRY
 672 _mesa_ProgramLocalParameter4fvARB(GLenum target, GLuint index,
 673                                   const GLfloat *params)
 674 {
 675    _mesa_ProgramLocalParameter4fARB(target, index, params[0], params[1],
 676                                     params[2], params[3]);
 677 }
 678
 679
 680 void GLAPIENTRY
 681 _mesa_ProgramLocalParameters4fvEXT(GLenum target, GLuint index, GLsizei count,
 682                                    const GLfloat *params)
 683 {
 684    GET_CURRENT_CONTEXT(ctx);
 685    struct gl_program *prog;
 686    GLint i;
 687    ASSERT_OUTSIDE_BEGIN_END(ctx);
 688
 689    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 690
 691    if (count <= 0) {
 692       _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameters4fv(count)");
 693    }
 694
 695    if (target == GL_FRAGMENT_PROGRAM_ARB
 696        && ctx->Extensions.ARB_fragment_program) {
 697       if ((index + count) > ctx->Const.FragmentProgram.MaxLocalParams) {
 698          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameters4fvEXT(index + count)");
 699          return;
 700       }
 701       prog = &(ctx->FragmentProgram.Current->Base);
 702    }
 703    else if (target == GL_VERTEX_PROGRAM_ARB
 704             && ctx->Extensions.ARB_vertex_program) {
 705       if ((index + count) > ctx->Const.VertexProgram.MaxLocalParams) {
 706          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameters4fvEXT(index + count)");
 707          return;
 708       }
 709       prog = &(ctx->VertexProgram.Current->Base);
 710    }
 711    else {
 712       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramLocalParameters4fvEXT(target)");
 713       return;
 714    }
 715
 716    for (i = 0; i < count; i++) {
 717       ASSERT((index + i) < MAX_PROGRAM_LOCAL_PARAMS);
 718       COPY_4V(prog->LocalParams[index + i], params);
 719       params += 4;
 720    }
 721 }
 722
 723
 724 /**
 725  * Note, this function is also used by the GL_NV_fragment_program extension.
 726  */
 727 void GLAPIENTRY
 728 _mesa_ProgramLocalParameter4dARB(GLenum target, GLuint index,
 729                                  GLdouble x, GLdouble y,
 730                                  GLdouble z, GLdouble w)
 731 {
 732    _mesa_ProgramLocalParameter4fARB(target, index, (GLfloat) x, (GLfloat) y,
 733                                     (GLfloat) z, (GLfloat) w);
 734 }
 735
 736
 737 /**
 738  * Note, this function is also used by the GL_NV_fragment_program extension.
 739  */
 740 void GLAPIENTRY
 741 _mesa_ProgramLocalParameter4dvARB(GLenum target, GLuint index,
 742                                   const GLdouble *params)
 743 {
 744    _mesa_ProgramLocalParameter4fARB(target, index,
 745                                     (GLfloat) params[0], (GLfloat) params[1],
 746                                     (GLfloat) params[2], (GLfloat) params[3]);
 747 }
 748
 749
 750 /**
 751  * Note, this function is also used by the GL_NV_fragment_program extension.
 752  */
 753 void GLAPIENTRY
 754 _mesa_GetProgramLocalParameterfvARB(GLenum target, GLuint index,
 755                                     GLfloat *params)
 756 {
 757    const struct gl_program *prog;
 758    GLuint maxParams;
 759    GET_CURRENT_CONTEXT(ctx);
 760    ASSERT_OUTSIDE_BEGIN_END(ctx);
 761
 762    if (target == GL_VERTEX_PROGRAM_ARB
 763        && ctx->Extensions.ARB_vertex_program) {
 764       prog = &(ctx->VertexProgram.Current->Base);
 765       maxParams = ctx->Const.VertexProgram.MaxLocalParams;
 766    }
 767    else if (target == GL_FRAGMENT_PROGRAM_ARB
 768             && ctx->Extensions.ARB_fragment_program) {
 769       prog = &(ctx->FragmentProgram.Current->Base);
 770       maxParams = ctx->Const.FragmentProgram.MaxLocalParams;
 771    }
 772    else if (target == GL_FRAGMENT_PROGRAM_NV
 773             && ctx->Extensions.NV_fragment_program) {
 774       prog = &(ctx->FragmentProgram.Current->Base);
 775       maxParams = MAX_NV_FRAGMENT_PROGRAM_PARAMS;
 776    }
 777    else {
 778       _mesa_error(ctx, GL_INVALID_ENUM,
 779                   "glGetProgramLocalParameterARB(target)");
 780       return;
 781    }
 782
 783    if (index >= maxParams) {
 784       _mesa_error(ctx, GL_INVALID_VALUE,
 785                   "glGetProgramLocalParameterARB(index)");
 786       return;
 787    }
 788
 789    ASSERT(prog);
 790    ASSERT(index < MAX_PROGRAM_LOCAL_PARAMS);
 791    COPY_4V(params, prog->LocalParams[index]);
 792 }
 793
 794
 795 /**
 796  * Note, this function is also used by the GL_NV_fragment_program extension.
 797  */
 798 void GLAPIENTRY
 799 _mesa_GetProgramLocalParameterdvARB(GLenum target, GLuint index,
 800                                     GLdouble *params)
 801 {
 802    GET_CURRENT_CONTEXT(ctx);
 803    GLfloat floatParams[4];
 804    ASSIGN_4V(floatParams, 0.0F, 0.0F, 0.0F, 0.0F);
 805    _mesa_GetProgramLocalParameterfvARB(target, index, floatParams);
 806    if (ctx->ErrorValue == GL_NO_ERROR) {
 807       COPY_4V(params, floatParams);
 808    }
 809 }
 810
 811
 812 void GLAPIENTRY
 813 _mesa_GetProgramivARB(GLenum target, GLenum pname, GLint *params)
 814 {
 815    const struct gl_program_constants *limits;
 816    struct gl_program *prog;
 817    GET_CURRENT_CONTEXT(ctx);
 818
 819    ASSERT_OUTSIDE_BEGIN_END(ctx);
 820
 821    if (target == GL_VERTEX_PROGRAM_ARB
 822        && ctx->Extensions.ARB_vertex_program) {
 823       prog = &(ctx->VertexProgram.Current->Base);
 824       limits = &ctx->Const.VertexProgram;
 825    }
 826    else if (target == GL_FRAGMENT_PROGRAM_ARB
 827             && ctx->Extensions.ARB_fragment_program) {
 828       prog = &(ctx->FragmentProgram.Current->Base);
 829       limits = &ctx->Const.FragmentProgram;
 830    }
 831    else {
 832       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(target)");
 833       return;
 834    }
 835
 836    ASSERT(prog);
 837    ASSERT(limits);
 838
 839    /* Queries supported for both vertex and fragment programs */
 840    switch (pname) {
 841       case GL_PROGRAM_LENGTH_ARB:
 842          *params
 843             = prog->String ? (GLint) _mesa_strlen((char *) prog->String) : 0;
 844          return;
 845       case GL_PROGRAM_FORMAT_ARB:
 846          *params = prog->Format;
 847          return;
 848       case GL_PROGRAM_BINDING_ARB:
 849          *params = prog->Id;
 850          return;
 851       case GL_PROGRAM_INSTRUCTIONS_ARB:
 852          *params = prog->NumInstructions;
 853          return;
 854       case GL_MAX_PROGRAM_INSTRUCTIONS_ARB:
 855          *params = limits->MaxInstructions;
 856          return;
 857       case GL_PROGRAM_NATIVE_INSTRUCTIONS_ARB:
 858          *params = prog->NumNativeInstructions;
 859          return;
 860       case GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB:
 861          *params = limits->MaxNativeInstructions;
 862          return;
 863       case GL_PROGRAM_TEMPORARIES_ARB:
 864          *params = prog->NumTemporaries;
 865          return;
 866       case GL_MAX_PROGRAM_TEMPORARIES_ARB:
 867          *params = limits->MaxTemps;
 868          return;
 869       case GL_PROGRAM_NATIVE_TEMPORARIES_ARB:
 870          *params = prog->NumNativeTemporaries;
 871          return;
 872       case GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB:
 873          *params = limits->MaxNativeTemps;
 874          return;
 875       case GL_PROGRAM_PARAMETERS_ARB:
 876          *params = prog->NumParameters;
 877          return;
 878       case GL_MAX_PROGRAM_PARAMETERS_ARB:
 879          *params = limits->MaxParameters;
 880          return;
 881       case GL_PROGRAM_NATIVE_PARAMETERS_ARB:
 882          *params = prog->NumNativeParameters;
 883          return;
 884       case GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB:
 885          *params = limits->MaxNativeParameters;
 886          return;
 887       case GL_PROGRAM_ATTRIBS_ARB:
 888          *params = prog->NumAttributes;
 889          return;
 890       case GL_MAX_PROGRAM_ATTRIBS_ARB:
 891          *params = limits->MaxAttribs;
 892          return;
 893       case GL_PROGRAM_NATIVE_ATTRIBS_ARB:
 894          *params = prog->NumNativeAttributes;
 895          return;
 896       case GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB:
 897          *params = limits->MaxNativeAttribs;
 898          return;
 899       case GL_PROGRAM_ADDRESS_REGISTERS_ARB:
 900          *params = prog->NumAddressRegs;
 901          return;
 902       case GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB:
 903          *params = limits->MaxAddressRegs;
 904          return;
 905       case GL_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB:
 906          *params = prog->NumNativeAddressRegs;
 907          return;
 908       case GL_MAX_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB:
 909          *params = limits->MaxNativeAddressRegs;
 910          return;
 911       case GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB:
 912          *params = limits->MaxLocalParams;
 913          return;
 914       case GL_MAX_PROGRAM_ENV_PARAMETERS_ARB:
 915          *params = limits->MaxEnvParams;
 916          return;
 917       case GL_PROGRAM_UNDER_NATIVE_LIMITS_ARB:
 918          /*
 919           * XXX we may not really need a driver callback here.
 920           * If the number of native instructions, registers, etc. used
 921           * are all below the maximums, we could return true.
 922           * The spec says that even if this query returns true, there's
 923           * no guarantee that the program will run in hardware.
 924           */
 925          if (prog->Id == 0) {
 926             /* default/null program */
 927             *params = GL_FALSE;
 928          }
 929          else if (ctx->Driver.IsProgramNative) {
 930             /* ask the driver */
 931             *params = ctx->Driver.IsProgramNative( ctx, target, prog );
 932          }
 933          else {
 934             /* probably running in software */
 935             *params = GL_TRUE;
 936          }
 937          return;
 938       default:
 939          /* continue with fragment-program only queries below */
 940          break;
 941    }
 942
 943    /*
 944     * The following apply to fragment programs only (at this time)
 945     */
 946    if (target == GL_FRAGMENT_PROGRAM_ARB) {
 947       const struct gl_fragment_program *fp = ctx->FragmentProgram.Current;
 948       switch (pname) {
 949          case GL_PROGRAM_ALU_INSTRUCTIONS_ARB:
 950             *params = fp->Base.NumNativeAluInstructions;
 951             return;
 952          case GL_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB:
 953             *params = fp->Base.NumAluInstructions;
 954             return;
 955          case GL_PROGRAM_TEX_INSTRUCTIONS_ARB:
 956             *params = fp->Base.NumTexInstructions;
 957             return;
 958          case GL_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB:
 959             *params = fp->Base.NumNativeTexInstructions;
 960             return;
 961          case GL_PROGRAM_TEX_INDIRECTIONS_ARB:
 962             *params = fp->Base.NumTexIndirections;
 963             return;
 964          case GL_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB:
 965             *params = fp->Base.NumNativeTexIndirections;
 966             return;
 967          case GL_MAX_PROGRAM_ALU_INSTRUCTIONS_ARB:
 968             *params = limits->MaxAluInstructions;
 969             return;
 970          case GL_MAX_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB:
 971             *params = limits->MaxNativeAluInstructions;
 972             return;
 973          case GL_MAX_PROGRAM_TEX_INSTRUCTIONS_ARB:
 974             *params = limits->MaxTexInstructions;
 975             return;
 976          case GL_MAX_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB:
 977             *params = limits->MaxNativeTexInstructions;
 978             return;
 979          case GL_MAX_PROGRAM_TEX_INDIRECTIONS_ARB:
 980             *params = limits->MaxTexIndirections;
 981             return;
 982          case GL_MAX_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB:
 983             *params = limits->MaxNativeTexIndirections;
 984             return;
 985          default:
 986             _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(pname)");
 987             return;
 988       }
 989    }
 990 }
 991
 992
 993 void GLAPIENTRY
 994 _mesa_GetProgramStringARB(GLenum target, GLenum pname, GLvoid *string)
 995 {
 996    const struct gl_program *prog;
 997    char *dst = (char *) string;
 998    GET_CURRENT_CONTEXT(ctx);
 999
1000    ASSERT_OUTSIDE_BEGIN_END(ctx);
1001
1002    if (target == GL_VERTEX_PROGRAM_ARB) {
1003       prog = &(ctx->VertexProgram.Current->Base);
1004    }
1005    else if (target == GL_FRAGMENT_PROGRAM_ARB) {
1006       prog = &(ctx->FragmentProgram.Current->Base);
1007    }
1008    else {
1009       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramStringARB(target)");
1010       return;
1011    }
1012
1013    ASSERT(prog);
1014
1015    if (pname != GL_PROGRAM_STRING_ARB) {
1016       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramStringARB(pname)");
1017       return;
1018    }
1019
1020    if (prog->String)
1021       _mesa_memcpy(dst, prog->String, _mesa_strlen((char *) prog->String));
1022    else
1023       *dst = '\0';
1024 }