src/mesa/shader/slang/slang_link.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.2
   4  *
   5  * Copyright (C) 2008  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 slang_link.c
  27  * GLSL linker
  28  * \author Brian Paul
  29  */
  30
  31 #include "main/imports.h"
  32 #include "main/context.h"
  33 #include "main/hash.h"
  34 #include "main/macros.h"
  35 #include "shader/program.h"
  36 #include "shader/prog_instruction.h"
  37 #include "shader/prog_parameter.h"
  38 #include "shader/prog_print.h"
  39 #include "shader/prog_statevars.h"
  40 #include "shader/prog_uniform.h"
  41 #include "shader/shader_api.h"
  42 #include "slang_link.h"
  43
  44
  45 /** cast wrapper */
  46 static struct gl_vertex_program *
  47 vertex_program(struct gl_program *prog)
  48 {
  49    assert(prog->Target == GL_VERTEX_PROGRAM_ARB);
  50    return (struct gl_vertex_program *) prog;
  51 }
  52
  53
  54 /** cast wrapper */
  55 static struct gl_fragment_program *
  56 fragment_program(struct gl_program *prog)
  57 {
  58    assert(prog->Target == GL_FRAGMENT_PROGRAM_ARB);
  59    return (struct gl_fragment_program *) prog;
  60 }
  61
  62
  63 /**
  64  * Record a linking error.
  65  */
  66 static void
  67 link_error(struct gl_shader_program *shProg, const char *msg)
  68 {
  69    if (shProg->InfoLog) {
  70       _mesa_free(shProg->InfoLog);
  71    }
  72    shProg->InfoLog = _mesa_strdup(msg);
  73    shProg->LinkStatus = GL_FALSE;
  74 }
  75
  76
  77
  78 /**
  79  * Check if the given bit is either set or clear in both bitfields.
  80  */
  81 static GLboolean
  82 bits_agree(GLbitfield flags1, GLbitfield flags2, GLbitfield bit)
  83 {
  84    return (flags1 & bit) == (flags2 & bit);
  85 }
  86
  87
  88 /**
  89  * Linking varying vars involves rearranging varying vars so that the
  90  * vertex program's output varyings matches the order of the fragment
  91  * program's input varyings.
  92  * We'll then rewrite instructions to replace PROGRAM_VARYING with either
  93  * PROGRAM_INPUT or PROGRAM_OUTPUT depending on whether it's a vertex or
  94  * fragment shader.
  95  * This is also where we set program Input/OutputFlags to indicate
  96  * which inputs are centroid-sampled, invariant, etc.
  97  */
  98 static GLboolean
  99 link_varying_vars(struct gl_shader_program *shProg, struct gl_program *prog)
 100 {
 101    GLuint *map, i, firstVarying, newFile;
 102    GLbitfield *inOutFlags;
 103
 104    map = (GLuint *) malloc(prog->Varying->NumParameters * sizeof(GLuint));
 105    if (!map)
 106       return GL_FALSE;
 107
 108    /* Varying variables are treated like other vertex program outputs
 109     * (and like other fragment program inputs).  The position of the
 110     * first varying differs for vertex/fragment programs...
 111     * Also, replace File=PROGRAM_VARYING with File=PROGRAM_INPUT/OUTPUT.
 112     */
 113    if (prog->Target == GL_VERTEX_PROGRAM_ARB) {
 114       firstVarying = VERT_RESULT_VAR0;
 115       newFile = PROGRAM_OUTPUT;
 116       inOutFlags = prog->OutputFlags;
 117    }
 118    else {
 119       assert(prog->Target == GL_FRAGMENT_PROGRAM_ARB);
 120       firstVarying = FRAG_ATTRIB_VAR0;
 121       newFile = PROGRAM_INPUT;
 122       inOutFlags = prog->InputFlags;
 123    }
 124
 125    for (i = 0; i < prog->Varying->NumParameters; i++) {
 126       /* see if this varying is in the linked varying list */
 127       const struct gl_program_parameter *var = prog->Varying->Parameters + i;
 128       GLint j = _mesa_lookup_parameter_index(shProg->Varying, -1, var->Name);
 129       if (j >= 0) {
 130          /* varying is already in list, do some error checking */
 131          const struct gl_program_parameter *v =
 132             &shProg->Varying->Parameters[j];
 133          if (var->Size != v->Size) {
 134             link_error(shProg, "mismatched varying variable types");
 135             return GL_FALSE;
 136          }
 137          if (!bits_agree(var->Flags, v->Flags, PROG_PARAM_BIT_CENTROID)) {
 138             char msg[100];
 139             snprintf(msg, sizeof(msg),
 140                      "centroid modifier mismatch for '%s'", var->Name);
 141             link_error(shProg, msg);
 142             return GL_FALSE;
 143          }
 144          if (!bits_agree(var->Flags, v->Flags, PROG_PARAM_BIT_INVARIANT)) {
 145             char msg[100];
 146             snprintf(msg, sizeof(msg),
 147                      "invariant modifier mismatch for '%s'", var->Name);
 148             link_error(shProg, msg);
 149             return GL_FALSE;
 150          }
 151       }
 152       else {
 153          /* not already in linked list */
 154          j = _mesa_add_varying(shProg->Varying, var->Name, var->Size,
 155                                var->Flags);
 156       }
 157
 158       /* Map varying[i] to varying[j].
 159        * Plus, set prog->Input/OutputFlags[] as described above.
 160        * Note: the loop here takes care of arrays or large (sz>4) vars.
 161        */
 162       {
 163          GLint sz = var->Size;
 164          while (sz > 0) {
 165             inOutFlags[firstVarying + j] = var->Flags;
 166             /*printf("Link varying from %d to %d\n", i, j);*/
 167             map[i++] = j++;
 168             sz -= 4;
 169          }
 170          i--; /* go back one */
 171       }
 172    }
 173
 174
 175    /* OK, now scan the program/shader instructions looking for varying vars,
 176     * replacing the old index with the new index.
 177     */
 178    for (i = 0; i < prog->NumInstructions; i++) {
 179       struct prog_instruction *inst = prog->Instructions + i;
 180       GLuint j;
 181
 182       if (inst->DstReg.File == PROGRAM_VARYING) {
 183          inst->DstReg.File = newFile;
 184          inst->DstReg.Index = map[ inst->DstReg.Index ] + firstVarying;
 185       }
 186
 187       for (j = 0; j < 3; j++) {
 188          if (inst->SrcReg[j].File == PROGRAM_VARYING) {
 189             inst->SrcReg[j].File = newFile;
 190             inst->SrcReg[j].Index = map[ inst->SrcReg[j].Index ] + firstVarying;
 191          }
 192       }
 193    }
 194
 195    free(map);
 196
 197    /* these will get recomputed before linking is completed */
 198    prog->InputsRead = 0x0;
 199    prog->OutputsWritten = 0x0;
 200
 201    return GL_TRUE;
 202 }
 203
 204
 205 /**
 206  * Build the shProg->Uniforms list.
 207  * This is basically a list/index of all uniforms found in either/both of
 208  * the vertex and fragment shaders.
 209  */
 210 static void
 211 link_uniform_vars(struct gl_shader_program *shProg,
 212                   struct gl_program *prog,
 213                   GLuint *numSamplers)
 214 {
 215    GLuint samplerMap[MAX_SAMPLERS];
 216    GLuint i;
 217
 218    for (i = 0; i < prog->Parameters->NumParameters; i++) {
 219       const struct gl_program_parameter *p = prog->Parameters->Parameters + i;
 220
 221       /*
 222        * XXX FIX NEEDED HERE
 223        * We should also be adding a uniform if p->Type == PROGRAM_STATE_VAR.
 224        * For example, modelview matrix, light pos, etc.
 225        * Also, we need to update the state-var name-generator code to
 226        * generate GLSL-style names, like "gl_LightSource[0].position".
 227        * Furthermore, we'll need to fix the state-var's size/datatype info.
 228        */
 229
 230       if ((p->Type == PROGRAM_UNIFORM && p->Used) ||
 231           p->Type == PROGRAM_SAMPLER) {
 232          struct gl_uniform *uniform =
 233             _mesa_append_uniform(shProg->Uniforms, p->Name, prog->Target, i);
 234          if (uniform)
 235             uniform->Initialized = p->Initialized;
 236       }
 237
 238       if (p->Type == PROGRAM_SAMPLER) {
 239          /* Allocate a new sampler index */
 240          GLuint sampNum = *numSamplers;
 241          GLuint oldSampNum = (GLuint) prog->Parameters->ParameterValues[i][0];
 242          assert(oldSampNum < MAX_SAMPLERS);
 243          samplerMap[oldSampNum] = sampNum;
 244          (*numSamplers)++;
 245       }
 246    }
 247
 248
 249    /* OK, now scan the program/shader instructions looking for sampler vars,
 250     * replacing the old index with the new index.
 251     */
 252    prog->SamplersUsed = 0x0;
 253    for (i = 0; i < prog->NumInstructions; i++) {
 254       struct prog_instruction *inst = prog->Instructions + i;
 255       if (_mesa_is_tex_instruction(inst->Opcode)) {
 256          /*
 257          printf("====== remap sampler from %d to %d\n",
 258                 inst->Sampler, map[ inst->Sampler ]);
 259          */
 260          /* here, texUnit is really samplerUnit */
 261          assert(inst->TexSrcUnit < MAX_SAMPLERS);
 262          inst->TexSrcUnit = samplerMap[inst->TexSrcUnit];
 263          prog->SamplerTargets[inst->TexSrcUnit] = inst->TexSrcTarget;
 264          prog->SamplersUsed |= (1 << inst->TexSrcUnit);
 265       }
 266    }
 267
 268 }
 269
 270
 271 /**
 272  * Resolve binding of generic vertex attributes.
 273  * For example, if the vertex shader declared "attribute vec4 foobar" we'll
 274  * allocate a generic vertex attribute for "foobar" and plug that value into
 275  * the vertex program instructions.
 276  * But if the user called glBindAttributeLocation(), those bindings will
 277  * have priority.
 278  */
 279 static GLboolean
 280 _slang_resolve_attributes(struct gl_shader_program *shProg,
 281                           const struct gl_program *origProg,
 282                           struct gl_program *linkedProg)
 283 {
 284    GLint attribMap[MAX_VERTEX_ATTRIBS];
 285    GLuint i, j;
 286    GLbitfield usedAttributes;
 287
 288    assert(origProg != linkedProg);
 289    assert(origProg->Target == GL_VERTEX_PROGRAM_ARB);
 290    assert(linkedProg->Target == GL_VERTEX_PROGRAM_ARB);
 291
 292    if (!shProg->Attributes)
 293       shProg->Attributes = _mesa_new_parameter_list();
 294
 295    if (linkedProg->Attributes) {
 296       _mesa_free_parameter_list(linkedProg->Attributes);
 297    }
 298    linkedProg->Attributes = _mesa_new_parameter_list();
 299
 300
 301    /* Build a bitmask indicating which attribute indexes have been
 302     * explicitly bound by the user with glBindAttributeLocation().
 303     */
 304    usedAttributes = 0x0;
 305    for (i = 0; i < shProg->Attributes->NumParameters; i++) {
 306       GLint attr = shProg->Attributes->Parameters[i].StateIndexes[0];
 307       usedAttributes |= (1 << attr);
 308    }
 309
 310    /* initialize the generic attribute map entries to -1 */
 311    for (i = 0; i < MAX_VERTEX_ATTRIBS; i++) {
 312       attribMap[i] = -1;
 313    }
 314
 315    /*
 316     * Scan program for generic attribute references
 317     */
 318    for (i = 0; i < linkedProg->NumInstructions; i++) {
 319       struct prog_instruction *inst = linkedProg->Instructions + i;
 320       for (j = 0; j < 3; j++) {
 321          if (inst->SrcReg[j].File == PROGRAM_INPUT &&
 322              inst->SrcReg[j].Index >= VERT_ATTRIB_GENERIC0) {
 323             /*
 324              * OK, we've found a generic vertex attribute reference.
 325              */
 326             const GLint k = inst->SrcReg[j].Index - VERT_ATTRIB_GENERIC0;
 327
 328             GLint attr = attribMap[k];
 329
 330             if (attr < 0) {
 331                /* Need to figure out attribute mapping now.
 332                 */
 333                const char *name = origProg->Attributes->Parameters[k].Name;
 334                const GLint size = origProg->Attributes->Parameters[k].Size;
 335                const GLenum type =origProg->Attributes->Parameters[k].DataType;
 336                GLint index;
 337
 338                /* See if there's a user-defined attribute binding for
 339                 * this name.
 340                 */
 341                index = _mesa_lookup_parameter_index(shProg->Attributes,
 342                                                     -1, name);
 343                if (index >= 0) {
 344                   /* Found a user-defined binding */
 345                   attr = shProg->Attributes->Parameters[index].StateIndexes[0];
 346                }
 347                else {
 348                   /* No user-defined binding, choose our own attribute number.
 349                    * Start at 1 since generic attribute 0 always aliases
 350                    * glVertex/position.
 351                    */
 352                   for (attr = 1; attr < MAX_VERTEX_ATTRIBS; attr++) {
 353                      if (((1 << attr) & usedAttributes) == 0)
 354                         break;
 355                   }
 356                   if (attr == MAX_VERTEX_ATTRIBS) {
 357                      link_error(shProg, "Too many vertex attributes");
 358                      return GL_FALSE;
 359                   }
 360
 361                   /* mark this attribute as used */
 362                   usedAttributes |= (1 << attr);
 363                }
 364
 365                attribMap[k] = attr;
 366
 367                /* Save the final name->attrib binding so it can be queried
 368                 * with glGetAttributeLocation().
 369                 */
 370                _mesa_add_attribute(linkedProg->Attributes, name,
 371                                    size, type, attr);
 372             }
 373
 374             assert(attr >= 0);
 375
 376             /* update the instruction's src reg */
 377             inst->SrcReg[j].Index = VERT_ATTRIB_GENERIC0 + attr;
 378          }
 379       }
 380    }
 381
 382    return GL_TRUE;
 383 }
 384
 385
 386 /**
 387  * Scan program instructions to update the program's NumTemporaries field.
 388  * Note: this implemenation relies on the code generator allocating
 389  * temps in increasing order (0, 1, 2, ... ).
 390  */
 391 static void
 392 _slang_count_temporaries(struct gl_program *prog)
 393 {
 394    GLuint i, j;
 395    GLint maxIndex = -1;
 396
 397    for (i = 0; i < prog->NumInstructions; i++) {
 398       const struct prog_instruction *inst = prog->Instructions + i;
 399       const GLuint numSrc = _mesa_num_inst_src_regs(inst->Opcode);
 400       for (j = 0; j < numSrc; j++) {
 401          if (inst->SrcReg[j].File == PROGRAM_TEMPORARY) {
 402             if (maxIndex < inst->SrcReg[j].Index)
 403                maxIndex = inst->SrcReg[j].Index;
 404          }
 405          if (inst->DstReg.File == PROGRAM_TEMPORARY) {
 406             if (maxIndex < (GLint) inst->DstReg.Index)
 407                maxIndex = inst->DstReg.Index;
 408          }
 409       }
 410    }
 411
 412    prog->NumTemporaries = (GLuint) (maxIndex + 1);
 413 }
 414
 415
 416 /**
 417  * Scan program instructions to update the program's InputsRead and
 418  * OutputsWritten fields.
 419  */
 420 static void
 421 _slang_update_inputs_outputs(struct gl_program *prog)
 422 {
 423    GLuint i, j;
 424    GLuint maxAddrReg = 0;
 425
 426    prog->InputsRead = 0x0;
 427    prog->OutputsWritten = 0x0;
 428
 429    for (i = 0; i < prog->NumInstructions; i++) {
 430       const struct prog_instruction *inst = prog->Instructions + i;
 431       const GLuint numSrc = _mesa_num_inst_src_regs(inst->Opcode);
 432       for (j = 0; j < numSrc; j++) {
 433          if (inst->SrcReg[j].File == PROGRAM_INPUT) {
 434             prog->InputsRead |= 1 << inst->SrcReg[j].Index;
 435             if (prog->Target == GL_FRAGMENT_PROGRAM_ARB &&
 436                 inst->SrcReg[j].Index == FRAG_ATTRIB_FOGC) {
 437                /* The fragment shader FOGC input is used for fog,
 438                 * front-facing and sprite/point coord.
 439                 */
 440                struct gl_fragment_program *fp = fragment_program(prog);
 441                const GLint swz = GET_SWZ(inst->SrcReg[j].Swizzle, 0);
 442                if (swz == SWIZZLE_X)
 443                   fp->UsesFogFragCoord = GL_TRUE;
 444                else if (swz == SWIZZLE_Y)
 445                   fp->UsesFrontFacing = GL_TRUE;
 446                else if (swz == SWIZZLE_Z || swz == SWIZZLE_W)
 447                   fp->UsesPointCoord = GL_TRUE;
 448             }
 449          }
 450          else if (inst->SrcReg[j].File == PROGRAM_ADDRESS) {
 451             maxAddrReg = MAX2(maxAddrReg, (GLuint) (inst->SrcReg[j].Index + 1));
 452          }
 453       }
 454       if (inst->DstReg.File == PROGRAM_OUTPUT) {
 455          prog->OutputsWritten |= 1 << inst->DstReg.Index;
 456       }
 457       else if (inst->DstReg.File == PROGRAM_ADDRESS) {
 458          maxAddrReg = MAX2(maxAddrReg, inst->DstReg.Index + 1);
 459       }
 460    }
 461    prog->NumAddressRegs = maxAddrReg;
 462 }
 463
 464
 465 /**
 466  * Shader linker.  Currently:
 467  *
 468  * 1. The last attached vertex shader and fragment shader are linked.
 469  * 2. Varying vars in the two shaders are combined so their locations
 470  *    agree between the vertex and fragment stages.  They're treated as
 471  *    vertex program output attribs and as fragment program input attribs.
 472  * 3. The vertex and fragment programs are cloned and modified to update
 473  *    src/dst register references so they use the new, linked varying
 474  *    storage locations.
 475  */
 476 void
 477 _slang_link(GLcontext *ctx,
 478             GLhandleARB programObj,
 479             struct gl_shader_program *shProg)
 480 {
 481    const struct gl_vertex_program *vertProg;
 482    const struct gl_fragment_program *fragProg;
 483    GLuint numSamplers = 0;
 484    GLuint i;
 485
 486    _mesa_clear_shader_program_data(ctx, shProg);
 487
 488    /* check that all programs compiled successfully */
 489    for (i = 0; i < shProg->NumShaders; i++) {
 490       if (!shProg->Shaders[i]->CompileStatus) {
 491          link_error(shProg, "linking with uncompiled shader\n");
 492          return;
 493       }
 494    }
 495
 496    shProg->Uniforms = _mesa_new_uniform_list();
 497    shProg->Varying = _mesa_new_parameter_list();
 498
 499    /**
 500     * Find attached vertex, fragment shaders defining main()
 501     */
 502    vertProg = NULL;
 503    fragProg = NULL;
 504    for (i = 0; i < shProg->NumShaders; i++) {
 505       struct gl_shader *shader = shProg->Shaders[i];
 506       if (shader->Type == GL_VERTEX_SHADER) {
 507          if (shader->Main)
 508             vertProg = vertex_program(shader->Program);
 509       }
 510       else if (shader->Type == GL_FRAGMENT_SHADER) {
 511          if (shader->Main)
 512             fragProg = fragment_program(shader->Program);
 513       }
 514       else {
 515          _mesa_problem(ctx, "unexpected shader target in slang_link()");
 516       }
 517    }
 518
 519 #if FEATURE_es2_glsl
 520    /* must have both a vertex and fragment program for ES2 */
 521    if (!vertProg) {
 522       link_error(shProg, "missing vertex shader\n");
 523       return;
 524    }
 525    if (!fragProg) {
 526       link_error(shProg, "missing fragment shader\n");
 527       return;
 528    }
 529 #endif
 530
 531    /*
 532     * Make copies of the vertex/fragment programs now since we'll be
 533     * changing src/dst registers after merging the uniforms and varying vars.
 534     */
 535    _mesa_reference_vertprog(ctx, &shProg->VertexProgram, NULL);
 536    if (vertProg) {
 537       struct gl_vertex_program *linked_vprog =
 538          vertex_program(_mesa_clone_program(ctx, &vertProg->Base));
 539       shProg->VertexProgram = linked_vprog; /* refcount OK */
 540       ASSERT(shProg->VertexProgram->Base.RefCount == 1);
 541    }
 542
 543    _mesa_reference_fragprog(ctx, &shProg->FragmentProgram, NULL);
 544    if (fragProg) {
 545       struct gl_fragment_program *linked_fprog =
 546          fragment_program(_mesa_clone_program(ctx, &fragProg->Base));
 547       shProg->FragmentProgram = linked_fprog; /* refcount OK */
 548       ASSERT(shProg->FragmentProgram->Base.RefCount == 1);
 549    }
 550
 551    /* link varying vars */
 552    if (shProg->VertexProgram) {
 553       if (!link_varying_vars(shProg, &shProg->VertexProgram->Base))
 554          return;
 555    }
 556    if (shProg->FragmentProgram) {
 557       if (!link_varying_vars(shProg, &shProg->FragmentProgram->Base))
 558          return;
 559    }
 560
 561    /* link uniform vars */
 562    if (shProg->VertexProgram)
 563       link_uniform_vars(shProg, &shProg->VertexProgram->Base, &numSamplers);
 564    if (shProg->FragmentProgram)
 565       link_uniform_vars(shProg, &shProg->FragmentProgram->Base, &numSamplers);
 566
 567    /*_mesa_print_uniforms(shProg->Uniforms);*/
 568
 569    if (shProg->VertexProgram) {
 570       if (!_slang_resolve_attributes(shProg, &vertProg->Base,
 571                                      &shProg->VertexProgram->Base)) {
 572          return;
 573       }
 574    }
 575
 576    if (shProg->VertexProgram) {
 577       _slang_update_inputs_outputs(&shProg->VertexProgram->Base);
 578       _slang_count_temporaries(&shProg->VertexProgram->Base);
 579       if (!(shProg->VertexProgram->Base.OutputsWritten & (1 << VERT_RESULT_HPOS))) {
 580          /* the vertex program did not compute a vertex position */
 581          link_error(shProg,
 582                     "gl_Position was not written by vertex shader\n");
 583          return;
 584       }
 585    }
 586    if (shProg->FragmentProgram) {
 587       _slang_count_temporaries(&shProg->FragmentProgram->Base);
 588       _slang_update_inputs_outputs(&shProg->FragmentProgram->Base);
 589    }
 590
 591    /* Check that all the varying vars needed by the fragment shader are
 592     * actually produced by the vertex shader.
 593     */
 594    if (shProg->FragmentProgram) {
 595       const GLbitfield varyingRead
 596          = shProg->FragmentProgram->Base.InputsRead >> FRAG_ATTRIB_VAR0;
 597       const GLbitfield varyingWritten = shProg->VertexProgram ?
 598          shProg->VertexProgram->Base.OutputsWritten >> VERT_RESULT_VAR0 : 0x0;
 599       if ((varyingRead & varyingWritten) != varyingRead) {
 600          link_error(shProg,
 601           "Fragment program using varying vars not written by vertex shader\n");
 602          return;
 603       }
 604    }
 605
 606
 607    if (fragProg && shProg->FragmentProgram) {
 608       /* Compute initial program's TexturesUsed info */
 609       _mesa_update_shader_textures_used(&shProg->FragmentProgram->Base);
 610
 611       /* notify driver that a new fragment program has been compiled/linked */
 612       ctx->Driver.ProgramStringNotify(ctx, GL_FRAGMENT_PROGRAM_ARB,
 613                                       &shProg->FragmentProgram->Base);
 614       if (MESA_VERBOSE & VERBOSE_GLSL_DUMP) {
 615          printf("Mesa original fragment program:\n");
 616          _mesa_print_program(&fragProg->Base);
 617          _mesa_print_program_parameters(ctx, &fragProg->Base);
 618
 619          printf("Mesa post-link fragment program:\n");
 620          _mesa_print_program(&shProg->FragmentProgram->Base);
 621          _mesa_print_program_parameters(ctx, &shProg->FragmentProgram->Base);
 622       }
 623    }
 624
 625    if (vertProg && shProg->VertexProgram) {
 626       /* Compute initial program's TexturesUsed info */
 627       _mesa_update_shader_textures_used(&shProg->VertexProgram->Base);
 628
 629       /* notify driver that a new vertex program has been compiled/linked */
 630       ctx->Driver.ProgramStringNotify(ctx, GL_VERTEX_PROGRAM_ARB,
 631                                       &shProg->VertexProgram->Base);
 632       if (MESA_VERBOSE & VERBOSE_GLSL_DUMP) {
 633          printf("Mesa original vertex program:\n");
 634          _mesa_print_program(&vertProg->Base);
 635          _mesa_print_program_parameters(ctx, &vertProg->Base);
 636
 637          printf("Mesa post-link vertex program:\n");
 638          _mesa_print_program(&shProg->VertexProgram->Base);
 639          _mesa_print_program_parameters(ctx, &shProg->VertexProgram->Base);
 640       }
 641    }
 642
 643    if (MESA_VERBOSE & VERBOSE_GLSL_DUMP) {
 644       printf("Varying vars:\n");
 645       _mesa_print_parameter_list(shProg->Varying);
 646    }
 647
 648    shProg->LinkStatus = (shProg->VertexProgram || shProg->FragmentProgram);
 649 }
 650