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 "nvfragparse.h"
  41 #include "nvvertparse.h"
  42 #include "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 void GLAPIENTRY
 249 _mesa_EnableVertexAttribArrayARB(GLuint index)
 250 {
 251    GET_CURRENT_CONTEXT(ctx);
 252    ASSERT_OUTSIDE_BEGIN_END(ctx);
 253
 254    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 255       _mesa_error(ctx, GL_INVALID_VALUE,
 256                   "glEnableVertexAttribArrayARB(index)");
 257       return;
 258    }
 259
 260    ASSERT(index < Elements(ctx->Array.ArrayObj->VertexAttrib));
 261
 262    FLUSH_VERTICES(ctx, _NEW_ARRAY);
 263    ctx->Array.ArrayObj->VertexAttrib[index].Enabled = GL_TRUE;
 264    ctx->Array.ArrayObj->_Enabled |= _NEW_ARRAY_ATTRIB(index);
 265    ctx->Array.NewState |= _NEW_ARRAY_ATTRIB(index);
 266 }
 267
 268
 269 void GLAPIENTRY
 270 _mesa_DisableVertexAttribArrayARB(GLuint index)
 271 {
 272    GET_CURRENT_CONTEXT(ctx);
 273    ASSERT_OUTSIDE_BEGIN_END(ctx);
 274
 275    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 276       _mesa_error(ctx, GL_INVALID_VALUE,
 277                   "glEnableVertexAttribArrayARB(index)");
 278       return;
 279    }
 280
 281    ASSERT(index < Elements(ctx->Array.ArrayObj->VertexAttrib));
 282
 283    FLUSH_VERTICES(ctx, _NEW_ARRAY);
 284    ctx->Array.ArrayObj->VertexAttrib[index].Enabled = GL_FALSE;
 285    ctx->Array.ArrayObj->_Enabled &= ~_NEW_ARRAY_ATTRIB(index);
 286    ctx->Array.NewState |= _NEW_ARRAY_ATTRIB(index);
 287 }
 288
 289
 290 void GLAPIENTRY
 291 _mesa_GetVertexAttribdvARB(GLuint index, GLenum pname, GLdouble *params)
 292 {
 293    GLfloat fparams[4];
 294    GET_CURRENT_CONTEXT(ctx);
 295    ASSERT_OUTSIDE_BEGIN_END(ctx);
 296
 297    _mesa_GetVertexAttribfvARB(index, pname, fparams);
 298    if (ctx->ErrorValue == GL_NO_ERROR) {
 299       if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 300          COPY_4V(params, fparams);
 301       }
 302       else {
 303          params[0] = fparams[0];
 304       }
 305    }
 306 }
 307
 308
 309 /**
 310  * Return info for a generic vertex attribute array (no alias with
 311  * legacy vertex attributes (pos, normal, color, etc)).
 312  */
 313 void GLAPIENTRY
 314 _mesa_GetVertexAttribfvARB(GLuint index, GLenum pname, GLfloat *params)
 315 {
 316    const struct gl_client_array *array;
 317    GET_CURRENT_CONTEXT(ctx);
 318    ASSERT_OUTSIDE_BEGIN_END(ctx);
 319
 320    if (index >= MAX_VERTEX_GENERIC_ATTRIBS) {
 321       _mesa_error(ctx, GL_INVALID_VALUE, "glGetVertexAttribfvARB(index)");
 322       return;
 323    }
 324
 325    ASSERT(index < Elements(ctx->Array.ArrayObj->VertexAttrib));
 326
 327    array = &ctx->Array.ArrayObj->VertexAttrib[index];
 328
 329    switch (pname) {
 330       case GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB:
 331          params[0] = (GLfloat) array->Enabled;
 332          break;
 333       case GL_VERTEX_ATTRIB_ARRAY_SIZE_ARB:
 334          params[0] = (GLfloat) array->Size;
 335          break;
 336       case GL_VERTEX_ATTRIB_ARRAY_STRIDE_ARB:
 337          params[0] = (GLfloat) array->Stride;
 338          break;
 339       case GL_VERTEX_ATTRIB_ARRAY_TYPE_ARB:
 340          params[0] = (GLfloat) array->Type;
 341          break;
 342       case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED_ARB:
 343          params[0] = array->Normalized;
 344          break;
 345       case GL_CURRENT_VERTEX_ATTRIB_ARB:
 346          if (index == 0) {
 347             _mesa_error(ctx, GL_INVALID_OPERATION,
 348                         "glGetVertexAttribfvARB(index==0)");
 349             return;
 350          }
 351          FLUSH_CURRENT(ctx, 0);
 352          COPY_4V(params, ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + index]);
 353          break;
 354       case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB:
 355          params[0] = (GLfloat) array->BufferObj->Name;
 356          break;
 357       default:
 358          _mesa_error(ctx, GL_INVALID_ENUM, "glGetVertexAttribfvARB(pname)");
 359          return;
 360    }
 361 }
 362
 363
 364 void GLAPIENTRY
 365 _mesa_GetVertexAttribivARB(GLuint index, GLenum pname, GLint *params)
 366 {
 367    GLfloat fparams[4];
 368    GET_CURRENT_CONTEXT(ctx);
 369    ASSERT_OUTSIDE_BEGIN_END(ctx);
 370
 371    _mesa_GetVertexAttribfvARB(index, pname, fparams);
 372    if (ctx->ErrorValue == GL_NO_ERROR) {
 373       if (pname == GL_CURRENT_VERTEX_ATTRIB_ARB) {
 374          COPY_4V_CAST(params, fparams, GLint);  /* float to int */
 375       }
 376       else {
 377          params[0] = (GLint) fparams[0];
 378       }
 379    }
 380 }
 381
 382
 383 void GLAPIENTRY
 384 _mesa_GetVertexAttribPointervARB(GLuint index, GLenum pname, GLvoid **pointer)
 385 {
 386    GET_CURRENT_CONTEXT(ctx);
 387    ASSERT_OUTSIDE_BEGIN_END(ctx);
 388
 389    if (index >= ctx->Const.VertexProgram.MaxAttribs) {
 390       _mesa_error(ctx, GL_INVALID_VALUE, "glGetVertexAttribPointerARB(index)");
 391       return;
 392    }
 393
 394    if (pname != GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB) {
 395       _mesa_error(ctx, GL_INVALID_ENUM, "glGetVertexAttribPointerARB(pname)");
 396       return;
 397    }
 398
 399    ASSERT(index < Elements(ctx->Array.ArrayObj->VertexAttrib));
 400
 401    *pointer = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[index].Ptr;
 402 }
 403
 404
 405 /**
 406  * Determine if id names a vertex or fragment program.
 407  * \note Not compiled into display lists.
 408  * \note Called from both glIsProgramNV and glIsProgramARB.
 409  * \param id is the program identifier
 410  * \return GL_TRUE if id is a program, else GL_FALSE.
 411  */
 412 GLboolean GLAPIENTRY
 413 _mesa_IsProgramARB(GLuint id)
 414 {
 415    struct gl_program *prog = NULL;
 416    GET_CURRENT_CONTEXT(ctx);
 417    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 418
 419    if (id == 0)
 420       return GL_FALSE;
 421
 422    prog = _mesa_lookup_program(ctx, id);
 423    if (prog && (prog != &_mesa_DummyProgram))
 424       return GL_TRUE;
 425    else
 426       return GL_FALSE;
 427 }
 428
 429
 430 void GLAPIENTRY
 431 _mesa_ProgramStringARB(GLenum target, GLenum format, GLsizei len,
 432                        const GLvoid *string)
 433 {
 434    struct gl_program *base;
 435    GET_CURRENT_CONTEXT(ctx);
 436    ASSERT_OUTSIDE_BEGIN_END(ctx);
 437
 438    FLUSH_VERTICES(ctx, _NEW_PROGRAM);
 439
 440    if (!ctx->Extensions.ARB_vertex_program
 441        && !ctx->Extensions.ARB_fragment_program) {
 442       _mesa_error(ctx, GL_INVALID_OPERATION, "glProgramStringARB()");
 443       return;
 444    }
 445
 446    if (format != GL_PROGRAM_FORMAT_ASCII_ARB) {
 447       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramStringARB(format)");
 448       return;
 449    }
 450
 451    /* The first couple cases are complicated.  The same enum value is used for
 452     * ARB and NV vertex programs.  If the target is a vertex program, parse it
 453     * using the ARB grammar if the string starts with "!!ARB" or if
 454     * NV_vertex_program is not supported.
 455     */
 456    if (target == GL_VERTEX_PROGRAM_ARB
 457        && ctx->Extensions.ARB_vertex_program
 458        && ((strncmp(string, "!!ARB", 5) == 0)
 459            || !ctx->Extensions.NV_vertex_program)) {
 460       struct gl_vertex_program *prog = ctx->VertexProgram.Current;
 461       _mesa_parse_arb_vertex_program(ctx, target, string, len, prog);
 462
 463       base = & prog->Base;
 464    }
 465    else if ((target == GL_VERTEX_PROGRAM_ARB
 466              || target == GL_VERTEX_STATE_PROGRAM_NV)
 467             && ctx->Extensions.NV_vertex_program) {
 468       struct gl_vertex_program *prog = ctx->VertexProgram.Current;
 469       _mesa_parse_nv_vertex_program(ctx, target, string, len, prog);
 470
 471       base = & prog->Base;
 472    }
 473    else if (target == GL_FRAGMENT_PROGRAM_ARB
 474             && ctx->Extensions.ARB_fragment_program) {
 475       struct gl_fragment_program *prog = ctx->FragmentProgram.Current;
 476       _mesa_parse_arb_fragment_program(ctx, target, string, len, prog);
 477
 478       base = & prog->Base;
 479    }
 480    else if (target == GL_FRAGMENT_PROGRAM_NV
 481             && ctx->Extensions.NV_fragment_program) {
 482       struct gl_fragment_program *prog = ctx->FragmentProgram.Current;
 483       _mesa_parse_nv_fragment_program(ctx, target, string, len, prog);
 484
 485       base = & prog->Base;
 486    }
 487    else {
 488       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramStringARB(target)");
 489       return;
 490    }
 491
 492    if (ctx->Program.ErrorPos == -1 && ctx->Driver.ProgramStringNotify)
 493       ctx->Driver.ProgramStringNotify( ctx, target, base );
 494 }
 495
 496
 497 /**
 498  * Set a program env parameter register.
 499  * \note Called from the GL API dispatcher.
 500  * Note, this function is also used by the GL_NV_vertex_program extension
 501  * (alias to ProgramParameterdNV)
 502  */
 503 void GLAPIENTRY
 504 _mesa_ProgramEnvParameter4dARB(GLenum target, GLuint index,
 505                                GLdouble x, GLdouble y, GLdouble z, GLdouble w)
 506 {
 507    _mesa_ProgramEnvParameter4fARB(target, index, (GLfloat) x, (GLfloat) y,
 508                                   (GLfloat) z, (GLfloat) w);
 509 }
 510
 511
 512 /**
 513  * Set a program env parameter register.
 514  * \note Called from the GL API dispatcher.
 515  * Note, this function is also used by the GL_NV_vertex_program extension
 516  * (alias to ProgramParameterdvNV)
 517  */
 518 void GLAPIENTRY
 519 _mesa_ProgramEnvParameter4dvARB(GLenum target, GLuint index,
 520                                 const GLdouble *params)
 521 {
 522    _mesa_ProgramEnvParameter4fARB(target, index, (GLfloat) params[0],
 523                                   (GLfloat) params[1], (GLfloat) params[2],
 524                                   (GLfloat) params[3]);
 525 }
 526
 527
 528 /**
 529  * Set a program env parameter register.
 530  * \note Called from the GL API dispatcher.
 531  * Note, this function is also used by the GL_NV_vertex_program extension
 532  * (alias to ProgramParameterfNV)
 533  */
 534 void GLAPIENTRY
 535 _mesa_ProgramEnvParameter4fARB(GLenum target, GLuint index,
 536                                GLfloat x, GLfloat y, GLfloat z, GLfloat w)
 537 {
 538    GET_CURRENT_CONTEXT(ctx);
 539    ASSERT_OUTSIDE_BEGIN_END(ctx);
 540
 541    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 542
 543    if (target == GL_FRAGMENT_PROGRAM_ARB
 544        && ctx->Extensions.ARB_fragment_program) {
 545       if (index >= ctx->Const.FragmentProgram.MaxEnvParams) {
 546          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameter(index)");
 547          return;
 548       }
 549       ASSIGN_4V(ctx->FragmentProgram.Parameters[index], x, y, z, w);
 550    }
 551    else if (target == GL_VERTEX_PROGRAM_ARB /* == GL_VERTEX_PROGRAM_NV */
 552        && (ctx->Extensions.ARB_vertex_program || ctx->Extensions.NV_vertex_program)) {
 553       if (index >= ctx->Const.VertexProgram.MaxEnvParams) {
 554          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameter(index)");
 555          return;
 556       }
 557       ASSIGN_4V(ctx->VertexProgram.Parameters[index], x, y, z, w);
 558    }
 559    else {
 560       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramEnvParameter(target)");
 561       return;
 562    }
 563 }
 564
 565
 566
 567 /**
 568  * Set a program env parameter register.
 569  * \note Called from the GL API dispatcher.
 570  * Note, this function is also used by the GL_NV_vertex_program extension
 571  * (alias to ProgramParameterfvNV)
 572  */
 573 void GLAPIENTRY
 574 _mesa_ProgramEnvParameter4fvARB(GLenum target, GLuint index,
 575                                 const GLfloat *params)
 576 {
 577    GET_CURRENT_CONTEXT(ctx);
 578    ASSERT_OUTSIDE_BEGIN_END(ctx);
 579
 580    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 581
 582    if (target == GL_FRAGMENT_PROGRAM_ARB
 583        && ctx->Extensions.ARB_fragment_program) {
 584       if (index >= ctx->Const.FragmentProgram.MaxEnvParams) {
 585          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameter4fv(index)");
 586          return;
 587       }
 588       memcpy(ctx->FragmentProgram.Parameters[index], params,
 589              4 * sizeof(GLfloat));
 590    }
 591    else if (target == GL_VERTEX_PROGRAM_ARB /* == GL_VERTEX_PROGRAM_NV */
 592        && (ctx->Extensions.ARB_vertex_program || ctx->Extensions.NV_vertex_program)) {
 593       if (index >= ctx->Const.VertexProgram.MaxEnvParams) {
 594          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameter4fv(index)");
 595          return;
 596       }
 597       memcpy(ctx->VertexProgram.Parameters[index], params,
 598              4 * sizeof(GLfloat));
 599    }
 600    else {
 601       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramEnvParameter4fv(target)");
 602       return;
 603    }
 604 }
 605
 606
 607 void GLAPIENTRY
 608 _mesa_ProgramEnvParameters4fvEXT(GLenum target, GLuint index, GLsizei count,
 609                                  const GLfloat *params)
 610 {
 611    GET_CURRENT_CONTEXT(ctx);
 612    GLfloat * dest;
 613    ASSERT_OUTSIDE_BEGIN_END(ctx);
 614
 615    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 616
 617    if (count <= 0) {
 618       _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(count)");
 619    }
 620
 621    if (target == GL_FRAGMENT_PROGRAM_ARB
 622        && ctx->Extensions.ARB_fragment_program) {
 623       if ((index + count) > ctx->Const.FragmentProgram.MaxEnvParams) {
 624          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(index + count)");
 625          return;
 626       }
 627       dest = ctx->FragmentProgram.Parameters[index];
 628    }
 629    else if (target == GL_VERTEX_PROGRAM_ARB
 630        && ctx->Extensions.ARB_vertex_program) {
 631       if ((index + count) > ctx->Const.VertexProgram.MaxEnvParams) {
 632          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramEnvParameters4fv(index + count)");
 633          return;
 634       }
 635       dest = ctx->VertexProgram.Parameters[index];
 636    }
 637    else {
 638       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramEnvParameters4fv(target)");
 639       return;
 640    }
 641
 642    memcpy(dest, params, count * 4 * sizeof(GLfloat));
 643 }
 644
 645
 646 void GLAPIENTRY
 647 _mesa_GetProgramEnvParameterdvARB(GLenum target, GLuint index,
 648                                   GLdouble *params)
 649 {
 650    GET_CURRENT_CONTEXT(ctx);
 651    GLfloat fparams[4];
 652
 653    _mesa_GetProgramEnvParameterfvARB(target, index, fparams);
 654    if (ctx->ErrorValue == GL_NO_ERROR) {
 655       params[0] = fparams[0];
 656       params[1] = fparams[1];
 657       params[2] = fparams[2];
 658       params[3] = fparams[3];
 659    }
 660 }
 661
 662
 663 void GLAPIENTRY
 664 _mesa_GetProgramEnvParameterfvARB(GLenum target, GLuint index,
 665                                   GLfloat *params)
 666 {
 667    GET_CURRENT_CONTEXT(ctx);
 668
 669    ASSERT_OUTSIDE_BEGIN_END(ctx);
 670
 671    if (target == GL_FRAGMENT_PROGRAM_ARB
 672        && ctx->Extensions.ARB_fragment_program) {
 673       if (index >= ctx->Const.FragmentProgram.MaxEnvParams) {
 674          _mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramEnvParameter(index)");
 675          return;
 676       }
 677       COPY_4V(params, ctx->FragmentProgram.Parameters[index]);
 678    }
 679    else if (target == GL_VERTEX_PROGRAM_ARB
 680        && ctx->Extensions.ARB_vertex_program) {
 681       if (index >= ctx->Const.VertexProgram.MaxEnvParams) {
 682          _mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramEnvParameter(index)");
 683          return;
 684       }
 685       COPY_4V(params, ctx->VertexProgram.Parameters[index]);
 686    }
 687    else {
 688       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramEnvParameter(target)");
 689       return;
 690    }
 691 }
 692
 693
 694 /**
 695  * Note, this function is also used by the GL_NV_fragment_program extension.
 696  */
 697 void GLAPIENTRY
 698 _mesa_ProgramLocalParameter4fARB(GLenum target, GLuint index,
 699                                  GLfloat x, GLfloat y, GLfloat z, GLfloat w)
 700 {
 701    GET_CURRENT_CONTEXT(ctx);
 702    struct gl_program *prog;
 703    ASSERT_OUTSIDE_BEGIN_END(ctx);
 704
 705    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 706
 707    if ((target == GL_FRAGMENT_PROGRAM_NV
 708         && ctx->Extensions.NV_fragment_program) ||
 709        (target == GL_FRAGMENT_PROGRAM_ARB
 710         && ctx->Extensions.ARB_fragment_program)) {
 711       if (index >= ctx->Const.FragmentProgram.MaxLocalParams) {
 712          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameterARB");
 713          return;
 714       }
 715       prog = &(ctx->FragmentProgram.Current->Base);
 716    }
 717    else if (target == GL_VERTEX_PROGRAM_ARB
 718             && ctx->Extensions.ARB_vertex_program) {
 719       if (index >= ctx->Const.VertexProgram.MaxLocalParams) {
 720          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameterARB");
 721          return;
 722       }
 723       prog = &(ctx->VertexProgram.Current->Base);
 724    }
 725    else {
 726       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramLocalParameterARB");
 727       return;
 728    }
 729
 730    ASSERT(index < MAX_PROGRAM_LOCAL_PARAMS);
 731    prog->LocalParams[index][0] = x;
 732    prog->LocalParams[index][1] = y;
 733    prog->LocalParams[index][2] = z;
 734    prog->LocalParams[index][3] = w;
 735 }
 736
 737
 738 /**
 739  * Note, this function is also used by the GL_NV_fragment_program extension.
 740  */
 741 void GLAPIENTRY
 742 _mesa_ProgramLocalParameter4fvARB(GLenum target, GLuint index,
 743                                   const GLfloat *params)
 744 {
 745    _mesa_ProgramLocalParameter4fARB(target, index, params[0], params[1],
 746                                     params[2], params[3]);
 747 }
 748
 749
 750 void GLAPIENTRY
 751 _mesa_ProgramLocalParameters4fvEXT(GLenum target, GLuint index, GLsizei count,
 752                                    const GLfloat *params)
 753 {
 754    GET_CURRENT_CONTEXT(ctx);
 755    GLfloat *dest;
 756    ASSERT_OUTSIDE_BEGIN_END(ctx);
 757
 758    FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
 759
 760    if (count <= 0) {
 761       _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameters4fv(count)");
 762    }
 763
 764    if (target == GL_FRAGMENT_PROGRAM_ARB
 765        && ctx->Extensions.ARB_fragment_program) {
 766       if ((index + count) > ctx->Const.FragmentProgram.MaxLocalParams) {
 767          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameters4fvEXT(index + count)");
 768          return;
 769       }
 770       dest = ctx->FragmentProgram.Current->Base.LocalParams[index];
 771    }
 772    else if (target == GL_VERTEX_PROGRAM_ARB
 773             && ctx->Extensions.ARB_vertex_program) {
 774       if ((index + count) > ctx->Const.VertexProgram.MaxLocalParams) {
 775          _mesa_error(ctx, GL_INVALID_VALUE, "glProgramLocalParameters4fvEXT(index + count)");
 776          return;
 777       }
 778       dest = ctx->VertexProgram.Current->Base.LocalParams[index];
 779    }
 780    else {
 781       _mesa_error(ctx, GL_INVALID_ENUM, "glProgramLocalParameters4fvEXT(target)");
 782       return;
 783    }
 784
 785    memcpy(dest, params, count * 4 * sizeof(GLfloat));
 786 }
 787
 788
 789 /**
 790  * Note, this function is also used by the GL_NV_fragment_program extension.
 791  */
 792 void GLAPIENTRY
 793 _mesa_ProgramLocalParameter4dARB(GLenum target, GLuint index,
 794                                  GLdouble x, GLdouble y,
 795                                  GLdouble z, GLdouble w)
 796 {
 797    _mesa_ProgramLocalParameter4fARB(target, index, (GLfloat) x, (GLfloat) y,
 798                                     (GLfloat) z, (GLfloat) w);
 799 }
 800
 801
 802 /**
 803  * Note, this function is also used by the GL_NV_fragment_program extension.
 804  */
 805 void GLAPIENTRY
 806 _mesa_ProgramLocalParameter4dvARB(GLenum target, GLuint index,
 807                                   const GLdouble *params)
 808 {
 809    _mesa_ProgramLocalParameter4fARB(target, index,
 810                                     (GLfloat) params[0], (GLfloat) params[1],
 811                                     (GLfloat) params[2], (GLfloat) params[3]);
 812 }
 813
 814
 815 /**
 816  * Note, this function is also used by the GL_NV_fragment_program extension.
 817  */
 818 void GLAPIENTRY
 819 _mesa_GetProgramLocalParameterfvARB(GLenum target, GLuint index,
 820                                     GLfloat *params)
 821 {
 822    const struct gl_program *prog;
 823    GLuint maxParams;
 824    GET_CURRENT_CONTEXT(ctx);
 825    ASSERT_OUTSIDE_BEGIN_END(ctx);
 826
 827    if (target == GL_VERTEX_PROGRAM_ARB
 828        && ctx->Extensions.ARB_vertex_program) {
 829       prog = &(ctx->VertexProgram.Current->Base);
 830       maxParams = ctx->Const.VertexProgram.MaxLocalParams;
 831    }
 832    else if (target == GL_FRAGMENT_PROGRAM_ARB
 833             && ctx->Extensions.ARB_fragment_program) {
 834       prog = &(ctx->FragmentProgram.Current->Base);
 835       maxParams = ctx->Const.FragmentProgram.MaxLocalParams;
 836    }
 837    else if (target == GL_FRAGMENT_PROGRAM_NV
 838             && ctx->Extensions.NV_fragment_program) {
 839       prog = &(ctx->FragmentProgram.Current->Base);
 840       maxParams = MAX_NV_FRAGMENT_PROGRAM_PARAMS;
 841    }
 842    else {
 843       _mesa_error(ctx, GL_INVALID_ENUM,
 844                   "glGetProgramLocalParameterARB(target)");
 845       return;
 846    }
 847
 848    if (index >= maxParams) {
 849       _mesa_error(ctx, GL_INVALID_VALUE,
 850                   "glGetProgramLocalParameterARB(index)");
 851       return;
 852    }
 853
 854    ASSERT(prog);
 855    ASSERT(index < MAX_PROGRAM_LOCAL_PARAMS);
 856    COPY_4V(params, prog->LocalParams[index]);
 857 }
 858
 859
 860 /**
 861  * Note, this function is also used by the GL_NV_fragment_program extension.
 862  */
 863 void GLAPIENTRY
 864 _mesa_GetProgramLocalParameterdvARB(GLenum target, GLuint index,
 865                                     GLdouble *params)
 866 {
 867    GET_CURRENT_CONTEXT(ctx);
 868    GLfloat floatParams[4];
 869    ASSIGN_4V(floatParams, 0.0F, 0.0F, 0.0F, 0.0F);
 870    _mesa_GetProgramLocalParameterfvARB(target, index, floatParams);
 871    if (ctx->ErrorValue == GL_NO_ERROR) {
 872       COPY_4V(params, floatParams);
 873    }
 874 }
 875
 876
 877 void GLAPIENTRY
 878 _mesa_GetProgramivARB(GLenum target, GLenum pname, GLint *params)
 879 {
 880    const struct gl_program_constants *limits;
 881    struct gl_program *prog;
 882    GET_CURRENT_CONTEXT(ctx);
 883
 884    ASSERT_OUTSIDE_BEGIN_END(ctx);
 885
 886    if (target == GL_VERTEX_PROGRAM_ARB
 887        && ctx->Extensions.ARB_vertex_program) {
 888       prog = &(ctx->VertexProgram.Current->Base);
 889       limits = &ctx->Const.VertexProgram;
 890    }
 891    else if (target == GL_FRAGMENT_PROGRAM_ARB
 892             && ctx->Extensions.ARB_fragment_program) {
 893       prog = &(ctx->FragmentProgram.Current->Base);
 894       limits = &ctx->Const.FragmentProgram;
 895    }
 896    else {
 897       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(target)");
 898       return;
 899    }
 900
 901    ASSERT(prog);
 902    ASSERT(limits);
 903
 904    /* Queries supported for both vertex and fragment programs */
 905    switch (pname) {
 906       case GL_PROGRAM_LENGTH_ARB:
 907          *params
 908             = prog->String ? (GLint) _mesa_strlen((char *) prog->String) : 0;
 909          return;
 910       case GL_PROGRAM_FORMAT_ARB:
 911          *params = prog->Format;
 912          return;
 913       case GL_PROGRAM_BINDING_ARB:
 914          *params = prog->Id;
 915          return;
 916       case GL_PROGRAM_INSTRUCTIONS_ARB:
 917          *params = prog->NumInstructions;
 918          return;
 919       case GL_MAX_PROGRAM_INSTRUCTIONS_ARB:
 920          *params = limits->MaxInstructions;
 921          return;
 922       case GL_PROGRAM_NATIVE_INSTRUCTIONS_ARB:
 923          *params = prog->NumNativeInstructions;
 924          return;
 925       case GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB:
 926          *params = limits->MaxNativeInstructions;
 927          return;
 928       case GL_PROGRAM_TEMPORARIES_ARB:
 929          *params = prog->NumTemporaries;
 930          return;
 931       case GL_MAX_PROGRAM_TEMPORARIES_ARB:
 932          *params = limits->MaxTemps;
 933          return;
 934       case GL_PROGRAM_NATIVE_TEMPORARIES_ARB:
 935          *params = prog->NumNativeTemporaries;
 936          return;
 937       case GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB:
 938          *params = limits->MaxNativeTemps;
 939          return;
 940       case GL_PROGRAM_PARAMETERS_ARB:
 941          *params = prog->NumParameters;
 942          return;
 943       case GL_MAX_PROGRAM_PARAMETERS_ARB:
 944          *params = limits->MaxParameters;
 945          return;
 946       case GL_PROGRAM_NATIVE_PARAMETERS_ARB:
 947          *params = prog->NumNativeParameters;
 948          return;
 949       case GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB:
 950          *params = limits->MaxNativeParameters;
 951          return;
 952       case GL_PROGRAM_ATTRIBS_ARB:
 953          *params = prog->NumAttributes;
 954          return;
 955       case GL_MAX_PROGRAM_ATTRIBS_ARB:
 956          *params = limits->MaxAttribs;
 957          return;
 958       case GL_PROGRAM_NATIVE_ATTRIBS_ARB:
 959          *params = prog->NumNativeAttributes;
 960          return;
 961       case GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB:
 962          *params = limits->MaxNativeAttribs;
 963          return;
 964       case GL_PROGRAM_ADDRESS_REGISTERS_ARB:
 965          *params = prog->NumAddressRegs;
 966          return;
 967       case GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB:
 968          *params = limits->MaxAddressRegs;
 969          return;
 970       case GL_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB:
 971          *params = prog->NumNativeAddressRegs;
 972          return;
 973       case GL_MAX_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB:
 974          *params = limits->MaxNativeAddressRegs;
 975          return;
 976       case GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB:
 977          *params = limits->MaxLocalParams;
 978          return;
 979       case GL_MAX_PROGRAM_ENV_PARAMETERS_ARB:
 980          *params = limits->MaxEnvParams;
 981          return;
 982       case GL_PROGRAM_UNDER_NATIVE_LIMITS_ARB:
 983          /*
 984           * XXX we may not really need a driver callback here.
 985           * If the number of native instructions, registers, etc. used
 986           * are all below the maximums, we could return true.
 987           * The spec says that even if this query returns true, there's
 988           * no guarantee that the program will run in hardware.
 989           */
 990          if (prog->Id == 0) {
 991             /* default/null program */
 992             *params = GL_FALSE;
 993          }
 994          else if (ctx->Driver.IsProgramNative) {
 995             /* ask the driver */
 996             *params = ctx->Driver.IsProgramNative( ctx, target, prog );
 997          }
 998          else {
 999             /* probably running in software */
1000             *params = GL_TRUE;
1001          }
1002          return;
1003       default:
1004          /* continue with fragment-program only queries below */
1005          break;
1006    }
1007
1008    /*
1009     * The following apply to fragment programs only (at this time)
1010     */
1011    if (target == GL_FRAGMENT_PROGRAM_ARB) {
1012       const struct gl_fragment_program *fp = ctx->FragmentProgram.Current;
1013       switch (pname) {
1014          case GL_PROGRAM_ALU_INSTRUCTIONS_ARB:
1015             *params = fp->Base.NumNativeAluInstructions;
1016             return;
1017          case GL_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB:
1018             *params = fp->Base.NumAluInstructions;
1019             return;
1020          case GL_PROGRAM_TEX_INSTRUCTIONS_ARB:
1021             *params = fp->Base.NumTexInstructions;
1022             return;
1023          case GL_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB:
1024             *params = fp->Base.NumNativeTexInstructions;
1025             return;
1026          case GL_PROGRAM_TEX_INDIRECTIONS_ARB:
1027             *params = fp->Base.NumTexIndirections;
1028             return;
1029          case GL_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB:
1030             *params = fp->Base.NumNativeTexIndirections;
1031             return;
1032          case GL_MAX_PROGRAM_ALU_INSTRUCTIONS_ARB:
1033             *params = limits->MaxAluInstructions;
1034             return;
1035          case GL_MAX_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB:
1036             *params = limits->MaxNativeAluInstructions;
1037             return;
1038          case GL_MAX_PROGRAM_TEX_INSTRUCTIONS_ARB:
1039             *params = limits->MaxTexInstructions;
1040             return;
1041          case GL_MAX_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB:
1042             *params = limits->MaxNativeTexInstructions;
1043             return;
1044          case GL_MAX_PROGRAM_TEX_INDIRECTIONS_ARB:
1045             *params = limits->MaxTexIndirections;
1046             return;
1047          case GL_MAX_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB:
1048             *params = limits->MaxNativeTexIndirections;
1049             return;
1050          default:
1051             _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(pname)");
1052             return;
1053       }
1054    } else {
1055       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramivARB(pname)");
1056       return;
1057    }
1058 }
1059
1060
1061 void GLAPIENTRY
1062 _mesa_GetProgramStringARB(GLenum target, GLenum pname, GLvoid *string)
1063 {
1064    const struct gl_program *prog;
1065    char *dst = (char *) string;
1066    GET_CURRENT_CONTEXT(ctx);
1067
1068    ASSERT_OUTSIDE_BEGIN_END(ctx);
1069
1070    if (target == GL_VERTEX_PROGRAM_ARB) {
1071       prog = &(ctx->VertexProgram.Current->Base);
1072    }
1073    else if (target == GL_FRAGMENT_PROGRAM_ARB) {
1074       prog = &(ctx->FragmentProgram.Current->Base);
1075    }
1076    else {
1077       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramStringARB(target)");
1078       return;
1079    }
1080
1081    ASSERT(prog);
1082
1083    if (pname != GL_PROGRAM_STRING_ARB) {
1084       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramStringARB(pname)");
1085       return;
1086    }
1087
1088    if (prog->String)
1089       _mesa_memcpy(dst, prog->String, _mesa_strlen((char *) prog->String));
1090    else
1091       *dst = '\0';
1092 }