src/mesa/swrast/s_context.c

   1 /* $Id: s_context.c,v 1.32 2002/05/02 00:59:20 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  4.1
   6  *
   7  * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * Authors:
  27  *    Keith Whitwell <keithw@valinux.com>
  28  */
  29
  30 #include "glheader.h"
  31 #include "mtypes.h"
  32 #include "mem.h"
  33
  34 #include "swrast.h"
  35 #include "s_points.h"
  36 #include "s_lines.h"
  37 #include "s_triangle.h"
  38 #include "s_blend.h"
  39 #include "s_context.h"
  40 #include "s_texture.h"
  41
  42
  43 /*
  44  * Recompute the value of swrast->_RasterMask, etc. according to
  45  * the current context.
  46  */
  47 static void
  48 _swrast_update_rasterflags( GLcontext *ctx )
  49 {
  50    GLuint RasterMask = 0;
  51
  52    if (ctx->Color.AlphaEnabled)           RasterMask |= ALPHATEST_BIT;
  53    if (ctx->Color.BlendEnabled)           RasterMask |= BLEND_BIT;
  54    if (ctx->Depth.Test)                   RasterMask |= DEPTH_BIT;
  55    if (ctx->Fog.Enabled)                  RasterMask |= FOG_BIT;
  56    if (ctx->Scissor.Enabled)              RasterMask |= CLIP_BIT;
  57    if (ctx->Stencil.Enabled)              RasterMask |= STENCIL_BIT;
  58    if (ctx->Visual.rgbMode) {
  59       const GLuint colorMask = *((GLuint *) &ctx->Color.ColorMask);
  60       if (colorMask != 0xffffffff)        RasterMask |= MASKING_BIT;
  61       if (ctx->Color.ColorLogicOpEnabled) RasterMask |= LOGIC_OP_BIT;
  62       if (ctx->Texture._ReallyEnabled)     RasterMask |= TEXTURE_BIT;
  63    }
  64    else {
  65       if (ctx->Color.IndexMask != 0xffffffff) RasterMask |= MASKING_BIT;
  66       if (ctx->Color.IndexLogicOpEnabled)     RasterMask |= LOGIC_OP_BIT;
  67    }
  68
  69    if (ctx->DrawBuffer->UseSoftwareAlphaBuffers
  70        && ctx->Color.ColorMask[ACOMP]
  71        && ctx->Color.DrawBuffer != GL_NONE)
  72       RasterMask |= ALPHABUF_BIT;
  73
  74    if (   ctx->Viewport.X < 0
  75        || ctx->Viewport.X + ctx->Viewport.Width > (GLint) ctx->DrawBuffer->Width
  76        || ctx->Viewport.Y < 0
  77        || ctx->Viewport.Y + ctx->Viewport.Height > (GLint) ctx->DrawBuffer->Height) {
  78       RasterMask |= CLIP_BIT;
  79    }
  80
  81    if (ctx->Depth.OcclusionTest)
  82       RasterMask |= OCCLUSION_BIT;
  83
  84
  85    /* If we're not drawing to exactly one color buffer set the
  86     * MULTI_DRAW_BIT flag.  Also set it if we're drawing to no
  87     * buffers or the RGBA or CI mask disables all writes.
  88     */
  89    if (ctx->Color.MultiDrawBuffer) {
  90       RasterMask |= MULTI_DRAW_BIT;
  91    }
  92    else if (ctx->Color.DrawBuffer==GL_NONE) {
  93       RasterMask |= MULTI_DRAW_BIT;
  94    }
  95    else if (ctx->Visual.rgbMode && *((GLuint *) ctx->Color.ColorMask) == 0) {
  96       RasterMask |= MULTI_DRAW_BIT; /* all RGBA channels disabled */
  97    }
  98    else if (!ctx->Visual.rgbMode && ctx->Color.IndexMask==0) {
  99       RasterMask |= MULTI_DRAW_BIT; /* all color index bits disabled */
 100    }
 101
 102    SWRAST_CONTEXT(ctx)->_RasterMask = RasterMask;
 103 }
 104
 105
 106 static void
 107 _swrast_update_polygon( GLcontext *ctx )
 108 {
 109    GLfloat backface_sign = 1;
 110
 111    if (ctx->Polygon.CullFlag) {
 112       backface_sign = 1;
 113       switch(ctx->Polygon.CullFaceMode) {
 114       case GL_BACK:
 115          if(ctx->Polygon.FrontFace==GL_CCW)
 116             backface_sign = -1;
 117          break;
 118       case GL_FRONT:
 119          if(ctx->Polygon.FrontFace!=GL_CCW)
 120             backface_sign = -1;
 121          break;
 122       default:
 123       case GL_FRONT_AND_BACK:
 124          backface_sign = 0;
 125          break;
 126       }
 127    }
 128    else {
 129       backface_sign = 0;
 130    }
 131
 132    SWRAST_CONTEXT(ctx)->_backface_sign = backface_sign;
 133 }
 134
 135
 136 static void
 137 _swrast_update_hint( GLcontext *ctx )
 138 {
 139    SWcontext *swrast = SWRAST_CONTEXT(ctx);
 140    swrast->_PreferPixelFog = (!swrast->AllowVertexFog ||
 141                               (ctx->Hint.Fog == GL_NICEST &&
 142                                swrast->AllowPixelFog));
 143 }
 144
 145
 146 /*
 147  * Update the swrast->_AnyTextureCombine flag.
 148  */
 149 static void
 150 _swrast_update_texture_env( GLcontext *ctx )
 151 {
 152    SWcontext *swrast = SWRAST_CONTEXT(ctx);
 153    GLuint i;
 154    swrast->_AnyTextureCombine = GL_FALSE;
 155    for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
 156       if (ctx->Texture.Unit[i].EnvMode == GL_COMBINE_EXT ||
 157           ctx->Texture.Unit[i].EnvMode == GL_COMBINE4_NV) {
 158          swrast->_AnyTextureCombine = GL_TRUE;
 159          return;
 160       }
 161    }
 162 }
 163
 164
 165 #define _SWRAST_NEW_DERIVED (_SWRAST_NEW_RASTERMASK |   \
 166                              _NEW_TEXTURE |             \
 167                              _NEW_HINT |                \
 168                              _NEW_POLYGON )
 169
 170 /* State referenced by _swrast_choose_triangle, _swrast_choose_line.
 171  */
 172 #define _SWRAST_NEW_TRIANGLE (_SWRAST_NEW_DERIVED |             \
 173                               _NEW_RENDERMODE|                  \
 174                               _NEW_POLYGON|                     \
 175                               _NEW_DEPTH|                       \
 176                               _NEW_STENCIL|                     \
 177                               _NEW_COLOR|                       \
 178                               _NEW_TEXTURE|                     \
 179                               _SWRAST_NEW_RASTERMASK|           \
 180                               _NEW_LIGHT|                       \
 181                               _NEW_FOG |                        \
 182                               _DD_NEW_SEPARATE_SPECULAR)
 183
 184 #define _SWRAST_NEW_LINE (_SWRAST_NEW_DERIVED |         \
 185                           _NEW_RENDERMODE|              \
 186                           _NEW_LINE|                    \
 187                           _NEW_TEXTURE|                 \
 188                           _NEW_LIGHT|                   \
 189                           _NEW_FOG|                     \
 190                           _NEW_DEPTH |                  \
 191                           _DD_NEW_SEPARATE_SPECULAR)
 192
 193 #define _SWRAST_NEW_POINT (_SWRAST_NEW_DERIVED |        \
 194                            _NEW_RENDERMODE |            \
 195                            _NEW_POINT |                 \
 196                            _NEW_TEXTURE |               \
 197                            _NEW_LIGHT |                 \
 198                            _NEW_FOG |                   \
 199                            _DD_NEW_SEPARATE_SPECULAR)
 200
 201 #define _SWRAST_NEW_TEXTURE_SAMPLE_FUNC _NEW_TEXTURE
 202
 203 #define _SWRAST_NEW_TEXTURE_ENV_MODE _NEW_TEXTURE
 204
 205 #define _SWRAST_NEW_BLEND_FUNC _NEW_COLOR
 206
 207
 208
 209 /* Stub for swrast->Triangle to select a true triangle function
 210  * after a state change.
 211  */
 212 static void
 213 _swrast_validate_triangle( GLcontext *ctx,
 214                            const SWvertex *v0,
 215                            const SWvertex *v1,
 216                            const SWvertex *v2 )
 217 {
 218    SWcontext *swrast = SWRAST_CONTEXT(ctx);
 219
 220    _swrast_validate_derived( ctx );
 221    swrast->choose_triangle( ctx );
 222
 223    if ((ctx->_TriangleCaps & DD_SEPARATE_SPECULAR) &&
 224        !ctx->Texture._ReallyEnabled) {
 225       swrast->SpecTriangle = swrast->Triangle;
 226       swrast->Triangle = _swrast_add_spec_terms_triangle;
 227    }
 228
 229    swrast->Triangle( ctx, v0, v1, v2 );
 230 }
 231
 232 static void
 233 _swrast_validate_line( GLcontext *ctx, const SWvertex *v0, const SWvertex *v1 )
 234 {
 235    SWcontext *swrast = SWRAST_CONTEXT(ctx);
 236
 237    _swrast_validate_derived( ctx );
 238    swrast->choose_line( ctx );
 239
 240    if ((ctx->_TriangleCaps & DD_SEPARATE_SPECULAR) &&
 241        !ctx->Texture._ReallyEnabled) {
 242       swrast->SpecLine = swrast->Line;
 243       swrast->Line = _swrast_add_spec_terms_line;
 244    }
 245
 246
 247    swrast->Line( ctx, v0, v1 );
 248 }
 249
 250 static void
 251 _swrast_validate_point( GLcontext *ctx, const SWvertex *v0 )
 252 {
 253    SWcontext *swrast = SWRAST_CONTEXT(ctx);
 254
 255    _swrast_validate_derived( ctx );
 256    swrast->choose_point( ctx );
 257
 258    if ((ctx->_TriangleCaps & DD_SEPARATE_SPECULAR) &&
 259        !ctx->Texture._ReallyEnabled) {
 260       swrast->SpecPoint = swrast->Point;
 261       swrast->Point = _swrast_add_spec_terms_point;
 262    }
 263
 264    swrast->Point( ctx, v0 );
 265 }
 266
 267 static void
 268 _swrast_validate_blend_func( GLcontext *ctx, GLuint n,
 269                              const GLubyte mask[],
 270                              GLchan src[][4],
 271                              CONST GLchan dst[][4] )
 272 {
 273    SWcontext *swrast = SWRAST_CONTEXT(ctx);
 274
 275    _swrast_validate_derived( ctx );
 276    _swrast_choose_blend_func( ctx );
 277
 278    swrast->BlendFunc( ctx, n, mask, src, dst );
 279 }
 280
 281
 282 static void
 283 _swrast_validate_texture_sample( GLcontext *ctx, GLuint texUnit,
 284                                  const struct gl_texture_object *tObj,
 285                                  GLuint n, GLfloat texcoords[][4],
 286                                  const GLfloat lambda[], GLchan rgba[][4] )
 287 {
 288    SWcontext *swrast = SWRAST_CONTEXT(ctx);
 289
 290    _swrast_validate_derived( ctx );
 291    _swrast_choose_texture_sample_func( ctx, texUnit, tObj );
 292
 293    swrast->TextureSample[texUnit]( ctx, texUnit, tObj, n, texcoords,
 294                                    lambda, rgba );
 295 }
 296
 297
 298 static void
 299 _swrast_sleep( GLcontext *ctx, GLuint new_state )
 300 {
 301 }
 302
 303
 304 static void
 305 _swrast_invalidate_state( GLcontext *ctx, GLuint new_state )
 306 {
 307    SWcontext *swrast = SWRAST_CONTEXT(ctx);
 308    GLuint i;
 309
 310    swrast->NewState |= new_state;
 311
 312    /* After 10 statechanges without any swrast functions being called,
 313     * put the module to sleep.
 314     */
 315    if (++swrast->StateChanges > 10) {
 316       swrast->InvalidateState = _swrast_sleep;
 317       swrast->NewState = ~0;
 318       new_state = ~0;
 319    }
 320
 321    if (new_state & swrast->invalidate_triangle)
 322       swrast->Triangle = _swrast_validate_triangle;
 323
 324    if (new_state & swrast->invalidate_line)
 325       swrast->Line = _swrast_validate_line;
 326
 327    if (new_state & swrast->invalidate_point)
 328       swrast->Point = _swrast_validate_point;
 329
 330    if (new_state & _SWRAST_NEW_BLEND_FUNC)
 331       swrast->BlendFunc = _swrast_validate_blend_func;
 332
 333    if (new_state & _SWRAST_NEW_TEXTURE_SAMPLE_FUNC)
 334       for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++)
 335          swrast->TextureSample[i] = _swrast_validate_texture_sample;
 336
 337    if (ctx->Visual.rgbMode) {
 338       ASSERT(swrast->Driver.WriteRGBASpan);
 339       ASSERT(swrast->Driver.WriteRGBSpan);
 340       ASSERT(swrast->Driver.WriteMonoRGBASpan);
 341       ASSERT(swrast->Driver.WriteRGBAPixels);
 342       ASSERT(swrast->Driver.WriteMonoRGBAPixels);
 343       ASSERT(swrast->Driver.ReadRGBASpan);
 344       ASSERT(swrast->Driver.ReadRGBAPixels);
 345    }
 346    else {
 347       ASSERT(swrast->Driver.WriteCI32Span);
 348       ASSERT(swrast->Driver.WriteCI8Span);
 349       ASSERT(swrast->Driver.WriteMonoCISpan);
 350       ASSERT(swrast->Driver.WriteCI32Pixels);
 351       ASSERT(swrast->Driver.WriteMonoCIPixels);
 352       ASSERT(swrast->Driver.ReadCI32Span);
 353       ASSERT(swrast->Driver.ReadCI32Pixels);
 354    }
 355 }
 356
 357
 358 void
 359 _swrast_validate_derived( GLcontext *ctx )
 360 {
 361    SWcontext *swrast = SWRAST_CONTEXT(ctx);
 362
 363    if (swrast->NewState) {
 364       if (swrast->NewState & _SWRAST_NEW_RASTERMASK)
 365          _swrast_update_rasterflags( ctx );
 366
 367       if (swrast->NewState & _NEW_POLYGON)
 368          _swrast_update_polygon( ctx );
 369
 370       if (swrast->NewState & _NEW_HINT)
 371          _swrast_update_hint( ctx );
 372
 373       if (swrast->NewState & _SWRAST_NEW_TEXTURE_ENV_MODE)
 374          _swrast_update_texture_env( ctx );
 375
 376       swrast->NewState = 0;
 377       swrast->StateChanges = 0;
 378       swrast->InvalidateState = _swrast_invalidate_state;
 379    }
 380 }
 381
 382 #define SWRAST_DEBUG 0
 383
 384 /* Public entrypoints:  See also s_accum.c, s_bitmap.c, etc.
 385  */
 386 void
 387 _swrast_Quad( GLcontext *ctx,
 388               const SWvertex *v0, const SWvertex *v1,
 389               const SWvertex *v2, const SWvertex *v3 )
 390 {
 391    if (SWRAST_DEBUG) {
 392       fprintf(stderr, "_swrast_Quad\n");
 393       _swrast_print_vertex( ctx, v0 );
 394       _swrast_print_vertex( ctx, v1 );
 395       _swrast_print_vertex( ctx, v2 );
 396       _swrast_print_vertex( ctx, v3 );
 397    }
 398    SWRAST_CONTEXT(ctx)->Triangle( ctx, v0, v1, v3 );
 399    SWRAST_CONTEXT(ctx)->Triangle( ctx, v1, v2, v3 );
 400 }
 401
 402 void
 403 _swrast_Triangle( GLcontext *ctx, const SWvertex *v0,
 404                   const SWvertex *v1, const SWvertex *v2 )
 405 {
 406    if (SWRAST_DEBUG) {
 407       fprintf(stderr, "_swrast_Triangle\n");
 408       _swrast_print_vertex( ctx, v0 );
 409       _swrast_print_vertex( ctx, v1 );
 410       _swrast_print_vertex( ctx, v2 );
 411    }
 412    SWRAST_CONTEXT(ctx)->Triangle( ctx, v0, v1, v2 );
 413 }
 414
 415 void
 416 _swrast_Line( GLcontext *ctx, const SWvertex *v0, const SWvertex *v1 )
 417 {
 418    if (SWRAST_DEBUG) {
 419       fprintf(stderr, "_swrast_Line\n");
 420       _swrast_print_vertex( ctx, v0 );
 421       _swrast_print_vertex( ctx, v1 );
 422    }
 423    SWRAST_CONTEXT(ctx)->Line( ctx, v0, v1 );
 424 }
 425
 426 void
 427 _swrast_Point( GLcontext *ctx, const SWvertex *v0 )
 428 {
 429    if (SWRAST_DEBUG) {
 430       fprintf(stderr, "_swrast_Point\n");
 431       _swrast_print_vertex( ctx, v0 );
 432    }
 433    SWRAST_CONTEXT(ctx)->Point( ctx, v0 );
 434 }
 435
 436 void
 437 _swrast_InvalidateState( GLcontext *ctx, GLuint new_state )
 438 {
 439    if (SWRAST_DEBUG) {
 440       fprintf(stderr, "_swrast_InvalidateState\n");
 441    }
 442    SWRAST_CONTEXT(ctx)->InvalidateState( ctx, new_state );
 443 }
 444
 445 void
 446 _swrast_ResetLineStipple( GLcontext *ctx )
 447 {
 448    if (SWRAST_DEBUG) {
 449       fprintf(stderr, "_swrast_ResetLineStipple\n");
 450    }
 451    SWRAST_CONTEXT(ctx)->StippleCounter = 0;
 452 }
 453
 454 void
 455 _swrast_allow_vertex_fog( GLcontext *ctx, GLboolean value )
 456 {
 457    if (SWRAST_DEBUG) {
 458       fprintf(stderr, "_swrast_allow_vertex_fog %d\n", value);
 459    }
 460    SWRAST_CONTEXT(ctx)->InvalidateState( ctx, _NEW_HINT );
 461    SWRAST_CONTEXT(ctx)->AllowVertexFog = value;
 462 }
 463
 464 void
 465 _swrast_allow_pixel_fog( GLcontext *ctx, GLboolean value )
 466 {
 467    if (SWRAST_DEBUG) {
 468       fprintf(stderr, "_swrast_allow_pixel_fog %d\n", value);
 469    }
 470    SWRAST_CONTEXT(ctx)->InvalidateState( ctx, _NEW_HINT );
 471    SWRAST_CONTEXT(ctx)->AllowPixelFog = value;
 472 }
 473
 474
 475 GLboolean
 476 _swrast_CreateContext( GLcontext *ctx )
 477 {
 478    GLuint i;
 479    SWcontext *swrast = (SWcontext *)CALLOC(sizeof(SWcontext));
 480
 481    if (SWRAST_DEBUG) {
 482       fprintf(stderr, "_swrast_CreateContext\n");
 483    }
 484
 485    if (!swrast)
 486       return GL_FALSE;
 487
 488    swrast->NewState = ~0;
 489
 490    swrast->choose_point = _swrast_choose_point;
 491    swrast->choose_line = _swrast_choose_line;
 492    swrast->choose_triangle = _swrast_choose_triangle;
 493
 494    swrast->invalidate_point = _SWRAST_NEW_POINT;
 495    swrast->invalidate_line = _SWRAST_NEW_LINE;
 496    swrast->invalidate_triangle = _SWRAST_NEW_TRIANGLE;
 497
 498    swrast->Point = _swrast_validate_point;
 499    swrast->Line = _swrast_validate_line;
 500    swrast->Triangle = _swrast_validate_triangle;
 501    swrast->InvalidateState = _swrast_sleep;
 502    swrast->BlendFunc = _swrast_validate_blend_func;
 503
 504    swrast->AllowVertexFog = GL_TRUE;
 505    swrast->AllowPixelFog = GL_TRUE;
 506
 507    /* Optimized Accum buffer */
 508    swrast->_IntegerAccumMode = GL_TRUE;
 509    swrast->_IntegerAccumScaler = 0.0;
 510
 511    for (i = 0 ; i < MAX_TEXTURE_UNITS ; i++)
 512       swrast->TextureSample[i] = _swrast_validate_texture_sample;
 513
 514    swrast->span = (struct sw_span *) MALLOC(sizeof(struct sw_span));
 515    if (!swrast->span) {
 516      FREE(swrast);
 517      return GL_FALSE;
 518    }
 519
 520    assert(ctx->Const.MaxTextureUnits > 0);
 521    assert(ctx->Const.MaxTextureUnits <= MAX_TEXTURE_UNITS);
 522
 523    swrast->TexelBuffer = (GLchan *) MALLOC(ctx->Const.MaxTextureUnits *
 524                                            MAX_WIDTH * 4 * sizeof(GLchan));
 525    if (!swrast->TexelBuffer) {
 526       FREE(swrast->span);
 527       FREE(swrast);
 528       return GL_FALSE;
 529    }
 530
 531    ctx->swrast_context = swrast;
 532
 533    return GL_TRUE;
 534 }
 535
 536 void
 537 _swrast_DestroyContext( GLcontext *ctx )
 538 {
 539    SWcontext *swrast = SWRAST_CONTEXT(ctx);
 540
 541    if (SWRAST_DEBUG) {
 542       fprintf(stderr, "_swrast_DestroyContext\n");
 543    }
 544
 545    FREE( swrast->span );
 546    FREE( swrast->TexelBuffer );
 547    FREE( swrast );
 548
 549    ctx->swrast_context = 0;
 550 }
 551
 552
 553 struct swrast_device_driver *
 554 _swrast_GetDeviceDriverReference( GLcontext *ctx )
 555 {
 556    SWcontext *swrast = SWRAST_CONTEXT(ctx);
 557    return &swrast->Driver;
 558 }
 559
 560 #define SWRAST_DEBUG_VERTICES 0
 561
 562 void
 563 _swrast_print_vertex( GLcontext *ctx, const SWvertex *v )
 564 {
 565    GLuint i;
 566
 567    if (SWRAST_DEBUG_VERTICES) {
 568       fprintf(stderr, "win %f %f %f %f\n",
 569               v->win[0], v->win[1], v->win[2], v->win[3]);
 570
 571       for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++)
 572          if (ctx->Texture.Unit[i]._ReallyEnabled)
 573             fprintf(stderr, "texcoord[%d] %f %f %f %f\n", i,
 574                     v->texcoord[i][0], v->texcoord[i][1],
 575                     v->texcoord[i][2], v->texcoord[i][3]);
 576
 577 #if CHAN_TYPE == GL_FLOAT
 578       fprintf(stderr, "color %f %f %f %f\n",
 579               v->color[0], v->color[1], v->color[2], v->color[3]);
 580       fprintf(stderr, "spec %f %f %f %f\n",
 581               v->specular[0], v->specular[1], v->specular[2], v->specular[3]);
 582 #else
 583       fprintf(stderr, "color %d %d %d %d\n",
 584               v->color[0], v->color[1], v->color[2], v->color[3]);
 585       fprintf(stderr, "spec %d %d %d %d\n",
 586               v->specular[0], v->specular[1], v->specular[2], v->specular[3]);
 587 #endif
 588       fprintf(stderr, "fog %f\n", v->fog);
 589       fprintf(stderr, "index %d\n", v->index);
 590       fprintf(stderr, "pointsize %f\n", v->pointSize);
 591       fprintf(stderr, "\n");
 592    }
 593 }
 594
 595
 596 void
 597 _swrast_flush( GLcontext *ctx )
 598 {
 599    /* no-op */
 600 }