src/mesa/main/fbobject.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.1
   4  *
   5  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   6  * Copyright (C) 1999-2009  VMware, Inc.  All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included
  16  * in all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  22  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  23  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26
  27 /*
  28  * GL_EXT/ARB_framebuffer_object extensions
  29  *
  30  * Authors:
  31  *   Brian Paul
  32  */
  33
  34
  35 #include "buffers.h"
  36 #include "context.h"
  37 #include "enums.h"
  38 #include "fbobject.h"
  39 #include "formats.h"
  40 #include "framebuffer.h"
  41 #include "hash.h"
  42 #include "macros.h"
  43 #include "mfeatures.h"
  44 #include "mtypes.h"
  45 #include "renderbuffer.h"
  46 #include "state.h"
  47 #include "teximage.h"
  48 #include "texobj.h"
  49
  50
  51 /** Set this to 1 to help debug FBO incompleteness problems */
  52 #define DEBUG_FBO 0
  53
  54 /** Set this to 1 to debug/log glBlitFramebuffer() calls */
  55 #define DEBUG_BLIT 0
  56
  57
  58 /**
  59  * Notes:
  60  *
  61  * None of the GL_EXT_framebuffer_object functions are compiled into
  62  * display lists.
  63  */
  64
  65
  66
  67 /*
  68  * When glGenRender/FramebuffersEXT() is called we insert pointers to
  69  * these placeholder objects into the hash table.
  70  * Later, when the object ID is first bound, we replace the placeholder
  71  * with the real frame/renderbuffer.
  72  */
  73 static struct gl_framebuffer DummyFramebuffer;
  74 static struct gl_renderbuffer DummyRenderbuffer;
  75
  76 /* We bind this framebuffer when applications pass a NULL
  77  * drawable/surface in make current. */
  78 static struct gl_framebuffer IncompleteFramebuffer;
  79
  80
  81 #define IS_CUBE_FACE(TARGET) \
  82    ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \
  83     (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z)
  84
  85
  86 static void
  87 delete_dummy_renderbuffer(struct gl_renderbuffer *rb)
  88 {
  89    /* no op */
  90 }
  91
  92 static void
  93 delete_dummy_framebuffer(struct gl_framebuffer *fb)
  94 {
  95    /* no op */
  96 }
  97
  98
  99 void
 100 _mesa_init_fbobjects(struct gl_context *ctx)
 101 {
 102    _glthread_INIT_MUTEX(DummyFramebuffer.Mutex);
 103    _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex);
 104    _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex);
 105    DummyFramebuffer.Delete = delete_dummy_framebuffer;
 106    DummyRenderbuffer.Delete = delete_dummy_renderbuffer;
 107    IncompleteFramebuffer.Delete = delete_dummy_framebuffer;
 108 }
 109
 110 struct gl_framebuffer *
 111 _mesa_get_incomplete_framebuffer(void)
 112 {
 113    return &IncompleteFramebuffer;
 114 }
 115
 116 /**
 117  * Helper routine for getting a gl_renderbuffer.
 118  */
 119 struct gl_renderbuffer *
 120 _mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id)
 121 {
 122    struct gl_renderbuffer *rb;
 123
 124    if (id == 0)
 125       return NULL;
 126
 127    rb = (struct gl_renderbuffer *)
 128       _mesa_HashLookup(ctx->Shared->RenderBuffers, id);
 129    return rb;
 130 }
 131
 132
 133 /**
 134  * Helper routine for getting a gl_framebuffer.
 135  */
 136 struct gl_framebuffer *
 137 _mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id)
 138 {
 139    struct gl_framebuffer *fb;
 140
 141    if (id == 0)
 142       return NULL;
 143
 144    fb = (struct gl_framebuffer *)
 145       _mesa_HashLookup(ctx->Shared->FrameBuffers, id);
 146    return fb;
 147 }
 148
 149
 150 /**
 151  * Mark the given framebuffer as invalid.  This will force the
 152  * test for framebuffer completeness to be done before the framebuffer
 153  * is used.
 154  */
 155 static void
 156 invalidate_framebuffer(struct gl_framebuffer *fb)
 157 {
 158    fb->_Status = 0; /* "indeterminate" */
 159 }
 160
 161
 162 /**
 163  * Return the gl_framebuffer object which corresponds to the given
 164  * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
 165  * Check support for GL_EXT_framebuffer_blit to determine if certain
 166  * targets are legal.
 167  * \return gl_framebuffer pointer or NULL if target is illegal
 168  */
 169 static struct gl_framebuffer *
 170 get_framebuffer_target(struct gl_context *ctx, GLenum target)
 171 {
 172    switch (target) {
 173    case GL_DRAW_FRAMEBUFFER:
 174       return ctx->Extensions.EXT_framebuffer_blit ? ctx->DrawBuffer : NULL;
 175    case GL_READ_FRAMEBUFFER:
 176       return ctx->Extensions.EXT_framebuffer_blit ? ctx->ReadBuffer : NULL;
 177    case GL_FRAMEBUFFER_EXT:
 178       return ctx->DrawBuffer;
 179    default:
 180       return NULL;
 181    }
 182 }
 183
 184
 185 /**
 186  * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
 187  * gl_renderbuffer_attachment object.
 188  * This function is only used for user-created FB objects, not the
 189  * default / window-system FB object.
 190  * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
 191  * the depth buffer attachment point.
 192  */
 193 struct gl_renderbuffer_attachment *
 194 _mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
 195                      GLenum attachment)
 196 {
 197    GLuint i;
 198
 199    assert(fb->Name > 0);
 200
 201    switch (attachment) {
 202    case GL_COLOR_ATTACHMENT0_EXT:
 203    case GL_COLOR_ATTACHMENT1_EXT:
 204    case GL_COLOR_ATTACHMENT2_EXT:
 205    case GL_COLOR_ATTACHMENT3_EXT:
 206    case GL_COLOR_ATTACHMENT4_EXT:
 207    case GL_COLOR_ATTACHMENT5_EXT:
 208    case GL_COLOR_ATTACHMENT6_EXT:
 209    case GL_COLOR_ATTACHMENT7_EXT:
 210    case GL_COLOR_ATTACHMENT8_EXT:
 211    case GL_COLOR_ATTACHMENT9_EXT:
 212    case GL_COLOR_ATTACHMENT10_EXT:
 213    case GL_COLOR_ATTACHMENT11_EXT:
 214    case GL_COLOR_ATTACHMENT12_EXT:
 215    case GL_COLOR_ATTACHMENT13_EXT:
 216    case GL_COLOR_ATTACHMENT14_EXT:
 217    case GL_COLOR_ATTACHMENT15_EXT:
 218       i = attachment - GL_COLOR_ATTACHMENT0_EXT;
 219       if (i >= ctx->Const.MaxColorAttachments) {
 220          return NULL;
 221       }
 222       return &fb->Attachment[BUFFER_COLOR0 + i];
 223    case GL_DEPTH_STENCIL_ATTACHMENT:
 224       /* fall-through */
 225    case GL_DEPTH_BUFFER:
 226       /* fall-through / new in GL 3.0 */
 227    case GL_DEPTH_ATTACHMENT_EXT:
 228       return &fb->Attachment[BUFFER_DEPTH];
 229    case GL_STENCIL_BUFFER:
 230       /* fall-through / new in GL 3.0 */
 231    case GL_STENCIL_ATTACHMENT_EXT:
 232       return &fb->Attachment[BUFFER_STENCIL];
 233    default:
 234       return NULL;
 235    }
 236 }
 237
 238
 239 /**
 240  * As above, but only used for getting attachments of the default /
 241  * window-system framebuffer (not user-created framebuffer objects).
 242  */
 243 static struct gl_renderbuffer_attachment *
 244 _mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
 245                          GLenum attachment)
 246 {
 247    assert(fb->Name == 0);
 248
 249    switch (attachment) {
 250    case GL_FRONT_LEFT:
 251       return &fb->Attachment[BUFFER_FRONT_LEFT];
 252    case GL_FRONT_RIGHT:
 253       return &fb->Attachment[BUFFER_FRONT_RIGHT];
 254    case GL_BACK_LEFT:
 255       return &fb->Attachment[BUFFER_BACK_LEFT];
 256    case GL_BACK_RIGHT:
 257       return &fb->Attachment[BUFFER_BACK_RIGHT];
 258    case GL_AUX0:
 259       if (fb->Visual.numAuxBuffers == 1) {
 260          return &fb->Attachment[BUFFER_AUX0];
 261       }
 262       return NULL;
 263    case GL_DEPTH_BUFFER:
 264       /* fall-through / new in GL 3.0 */
 265    case GL_DEPTH_ATTACHMENT_EXT:
 266       return &fb->Attachment[BUFFER_DEPTH];
 267    case GL_STENCIL_BUFFER:
 268       /* fall-through / new in GL 3.0 */
 269    case GL_STENCIL_ATTACHMENT_EXT:
 270       return &fb->Attachment[BUFFER_STENCIL];
 271    default:
 272       return NULL;
 273    }
 274 }
 275
 276
 277
 278 /**
 279  * Remove any texture or renderbuffer attached to the given attachment
 280  * point.  Update reference counts, etc.
 281  */
 282 void
 283 _mesa_remove_attachment(struct gl_context *ctx,
 284                         struct gl_renderbuffer_attachment *att)
 285 {
 286    if (att->Type == GL_TEXTURE) {
 287       ASSERT(att->Texture);
 288       if (ctx->Driver.FinishRenderTexture) {
 289          /* tell driver that we're done rendering to this texture. */
 290          ctx->Driver.FinishRenderTexture(ctx, att);
 291       }
 292       _mesa_reference_texobj(&att->Texture, NULL); /* unbind */
 293       ASSERT(!att->Texture);
 294    }
 295    if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) {
 296       ASSERT(!att->Texture);
 297       _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */
 298       ASSERT(!att->Renderbuffer);
 299    }
 300    att->Type = GL_NONE;
 301    att->Complete = GL_TRUE;
 302 }
 303
 304
 305 /**
 306  * Bind a texture object to an attachment point.
 307  * The previous binding, if any, will be removed first.
 308  */
 309 void
 310 _mesa_set_texture_attachment(struct gl_context *ctx,
 311                              struct gl_framebuffer *fb,
 312                              struct gl_renderbuffer_attachment *att,
 313                              struct gl_texture_object *texObj,
 314                              GLenum texTarget, GLuint level, GLuint zoffset)
 315 {
 316    if (att->Texture == texObj) {
 317       /* re-attaching same texture */
 318       ASSERT(att->Type == GL_TEXTURE);
 319       if (ctx->Driver.FinishRenderTexture)
 320          ctx->Driver.FinishRenderTexture(ctx, att);
 321    }
 322    else {
 323       /* new attachment */
 324       if (ctx->Driver.FinishRenderTexture && att->Texture)
 325          ctx->Driver.FinishRenderTexture(ctx, att);
 326       _mesa_remove_attachment(ctx, att);
 327       att->Type = GL_TEXTURE;
 328       assert(!att->Texture);
 329       _mesa_reference_texobj(&att->Texture, texObj);
 330    }
 331
 332    /* always update these fields */
 333    att->TextureLevel = level;
 334    att->CubeMapFace = _mesa_tex_target_to_face(texTarget);
 335    att->Zoffset = zoffset;
 336    att->Complete = GL_FALSE;
 337
 338    if (_mesa_get_attachment_teximage(att)) {
 339       ctx->Driver.RenderTexture(ctx, fb, att);
 340    }
 341
 342    invalidate_framebuffer(fb);
 343 }
 344
 345
 346 /**
 347  * Bind a renderbuffer to an attachment point.
 348  * The previous binding, if any, will be removed first.
 349  */
 350 void
 351 _mesa_set_renderbuffer_attachment(struct gl_context *ctx,
 352                                   struct gl_renderbuffer_attachment *att,
 353                                   struct gl_renderbuffer *rb)
 354 {
 355    /* XXX check if re-doing same attachment, exit early */
 356    _mesa_remove_attachment(ctx, att);
 357    att->Type = GL_RENDERBUFFER_EXT;
 358    att->Texture = NULL; /* just to be safe */
 359    att->Complete = GL_FALSE;
 360    _mesa_reference_renderbuffer(&att->Renderbuffer, rb);
 361 }
 362
 363
 364 /**
 365  * Fallback for ctx->Driver.FramebufferRenderbuffer()
 366  * Attach a renderbuffer object to a framebuffer object.
 367  */
 368 void
 369 _mesa_framebuffer_renderbuffer(struct gl_context *ctx,
 370                                struct gl_framebuffer *fb,
 371                                GLenum attachment, struct gl_renderbuffer *rb)
 372 {
 373    struct gl_renderbuffer_attachment *att;
 374
 375    _glthread_LOCK_MUTEX(fb->Mutex);
 376
 377    att = _mesa_get_attachment(ctx, fb, attachment);
 378    ASSERT(att);
 379    if (rb) {
 380       _mesa_set_renderbuffer_attachment(ctx, att, rb);
 381       if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
 382          /* do stencil attachment here (depth already done above) */
 383          att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT);
 384          assert(att);
 385          _mesa_set_renderbuffer_attachment(ctx, att, rb);
 386       }
 387       rb->AttachedAnytime = GL_TRUE;
 388    }
 389    else {
 390       _mesa_remove_attachment(ctx, att);
 391    }
 392
 393    invalidate_framebuffer(fb);
 394
 395    _glthread_UNLOCK_MUTEX(fb->Mutex);
 396 }
 397
 398
 399 /**
 400  * Fallback for ctx->Driver.ValidateFramebuffer()
 401  * Check if the renderbuffer's formats are supported by the software
 402  * renderer.
 403  * Drivers should probably override this.
 404  */
 405 void
 406 _mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
 407 {
 408    gl_buffer_index buf;
 409    for (buf = 0; buf < BUFFER_COUNT; buf++) {
 410       const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer;
 411       if (rb) {
 412          switch (rb->_BaseFormat) {
 413          case GL_ALPHA:
 414          case GL_LUMINANCE_ALPHA:
 415          case GL_LUMINANCE:
 416          case GL_INTENSITY:
 417          case GL_RED:
 418          case GL_RG:
 419             fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
 420             return;
 421          default:
 422             /* render buffer format is supported by software rendering */
 423             ;
 424          }
 425       }
 426    }
 427 }
 428
 429
 430 /**
 431  * For debug only.
 432  */
 433 static void
 434 att_incomplete(const char *msg)
 435 {
 436 #if DEBUG_FBO
 437    _mesa_debug(NULL, "attachment incomplete: %s\n", msg);
 438 #else
 439    (void) msg;
 440 #endif
 441 }
 442
 443
 444 /**
 445  * For debug only.
 446  */
 447 static void
 448 fbo_incomplete(const char *msg, int index)
 449 {
 450 #if DEBUG_FBO
 451    _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index);
 452 #else
 453    (void) msg;
 454    (void) index;
 455 #endif
 456 }
 457
 458
 459 /**
 460  * Is the given base format a legal format for a color renderbuffer?
 461  */
 462 GLboolean
 463 _mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat)
 464 {
 465    switch (baseFormat) {
 466    case GL_RGB:
 467    case GL_RGBA:
 468       return GL_TRUE;
 469    case GL_LUMINANCE:
 470    case GL_LUMINANCE_ALPHA:
 471    case GL_INTENSITY:
 472    case GL_ALPHA:
 473       return ctx->Extensions.ARB_framebuffer_object;
 474    case GL_RED:
 475    case GL_RG:
 476       return ctx->Extensions.ARB_texture_rg;
 477    default:
 478       return GL_FALSE;
 479    }
 480 }
 481
 482
 483 /**
 484  * Is the given base format a legal format for a depth/stencil renderbuffer?
 485  */
 486 static GLboolean
 487 is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat)
 488 {
 489    switch (baseFormat) {
 490    case GL_DEPTH_COMPONENT:
 491    case GL_DEPTH_STENCIL_EXT:
 492       return GL_TRUE;
 493    default:
 494       return GL_FALSE;
 495    }
 496 }
 497
 498
 499 /**
 500  * Test if an attachment point is complete and update its Complete field.
 501  * \param format if GL_COLOR, this is a color attachment point,
 502  *               if GL_DEPTH, this is a depth component attachment point,
 503  *               if GL_STENCIL, this is a stencil component attachment point.
 504  */
 505 static void
 506 test_attachment_completeness(const struct gl_context *ctx, GLenum format,
 507                              struct gl_renderbuffer_attachment *att)
 508 {
 509    assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL);
 510
 511    /* assume complete */
 512    att->Complete = GL_TRUE;
 513
 514    /* Look for reasons why the attachment might be incomplete */
 515    if (att->Type == GL_TEXTURE) {
 516       const struct gl_texture_object *texObj = att->Texture;
 517       struct gl_texture_image *texImage;
 518       GLenum baseFormat;
 519
 520       if (!texObj) {
 521          att_incomplete("no texobj");
 522          att->Complete = GL_FALSE;
 523          return;
 524       }
 525
 526       texImage = texObj->Image[att->CubeMapFace][att->TextureLevel];
 527       if (!texImage) {
 528          att_incomplete("no teximage");
 529          att->Complete = GL_FALSE;
 530          return;
 531       }
 532       if (texImage->Width < 1 || texImage->Height < 1) {
 533          att_incomplete("teximage width/height=0");
 534          printf("texobj = %u\n", texObj->Name);
 535          printf("level = %d\n", att->TextureLevel);
 536          att->Complete = GL_FALSE;
 537          return;
 538       }
 539       if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) {
 540          att_incomplete("bad z offset");
 541          att->Complete = GL_FALSE;
 542          return;
 543       }
 544
 545       baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
 546
 547       if (format == GL_COLOR) {
 548          if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
 549             att_incomplete("bad format");
 550             att->Complete = GL_FALSE;
 551             return;
 552          }
 553          if (_mesa_is_format_compressed(texImage->TexFormat)) {
 554             att_incomplete("compressed internalformat");
 555             att->Complete = GL_FALSE;
 556             return;
 557          }
 558       }
 559       else if (format == GL_DEPTH) {
 560          if (baseFormat == GL_DEPTH_COMPONENT) {
 561             /* OK */
 562          }
 563          else if (ctx->Extensions.EXT_packed_depth_stencil &&
 564                   ctx->Extensions.ARB_depth_texture &&
 565                   baseFormat == GL_DEPTH_STENCIL_EXT) {
 566             /* OK */
 567          }
 568          else {
 569             att->Complete = GL_FALSE;
 570             att_incomplete("bad depth format");
 571             return;
 572          }
 573       }
 574       else {
 575          ASSERT(format == GL_STENCIL);
 576          if (ctx->Extensions.EXT_packed_depth_stencil &&
 577              ctx->Extensions.ARB_depth_texture &&
 578              baseFormat == GL_DEPTH_STENCIL_EXT) {
 579             /* OK */
 580          }
 581          else {
 582             /* no such thing as stencil-only textures */
 583             att_incomplete("illegal stencil texture");
 584             att->Complete = GL_FALSE;
 585             return;
 586          }
 587       }
 588    }
 589    else if (att->Type == GL_RENDERBUFFER_EXT) {
 590       const GLenum baseFormat =
 591          _mesa_get_format_base_format(att->Renderbuffer->Format);
 592
 593       ASSERT(att->Renderbuffer);
 594       if (!att->Renderbuffer->InternalFormat ||
 595           att->Renderbuffer->Width < 1 ||
 596           att->Renderbuffer->Height < 1) {
 597          att_incomplete("0x0 renderbuffer");
 598          att->Complete = GL_FALSE;
 599          return;
 600       }
 601       if (format == GL_COLOR) {
 602          if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
 603             att_incomplete("bad renderbuffer color format");
 604             att->Complete = GL_FALSE;
 605             return;
 606          }
 607       }
 608       else if (format == GL_DEPTH) {
 609          if (baseFormat == GL_DEPTH_COMPONENT) {
 610             /* OK */
 611          }
 612          else if (ctx->Extensions.EXT_packed_depth_stencil &&
 613                   baseFormat == GL_DEPTH_STENCIL_EXT) {
 614             /* OK */
 615          }
 616          else {
 617             att_incomplete("bad renderbuffer depth format");
 618             att->Complete = GL_FALSE;
 619             return;
 620          }
 621       }
 622       else {
 623          assert(format == GL_STENCIL);
 624          if (baseFormat == GL_STENCIL_INDEX) {
 625             /* OK */
 626          }
 627          else if (ctx->Extensions.EXT_packed_depth_stencil &&
 628                   baseFormat == GL_DEPTH_STENCIL_EXT) {
 629             /* OK */
 630          }
 631          else {
 632             att->Complete = GL_FALSE;
 633             att_incomplete("bad renderbuffer stencil format");
 634             return;
 635          }
 636       }
 637    }
 638    else {
 639       ASSERT(att->Type == GL_NONE);
 640       /* complete */
 641       return;
 642    }
 643 }
 644
 645
 646 /**
 647  * Test if the given framebuffer object is complete and update its
 648  * Status field with the results.
 649  * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
 650  * driver to make hardware-specific validation/completeness checks.
 651  * Also update the framebuffer's Width and Height fields if the
 652  * framebuffer is complete.
 653  */
 654 void
 655 _mesa_test_framebuffer_completeness(struct gl_context *ctx,
 656                                     struct gl_framebuffer *fb)
 657 {
 658    GLuint numImages;
 659    GLenum intFormat = GL_NONE; /* color buffers' internal format */
 660    GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0;
 661    GLint numSamples = -1;
 662    GLint i;
 663    GLuint j;
 664
 665    assert(fb->Name != 0);
 666
 667    numImages = 0;
 668    fb->Width = 0;
 669    fb->Height = 0;
 670
 671    /* Start at -2 to more easily loop over all attachment points.
 672     *  -2: depth buffer
 673     *  -1: stencil buffer
 674     * >=0: color buffer
 675     */
 676    for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) {
 677       struct gl_renderbuffer_attachment *att;
 678       GLenum f;
 679       gl_format attFormat;
 680
 681       /*
 682        * XXX for ARB_fbo, only check color buffers that are named by
 683        * GL_READ_BUFFER and GL_DRAW_BUFFERi.
 684        */
 685
 686       /* check for attachment completeness
 687        */
 688       if (i == -2) {
 689          att = &fb->Attachment[BUFFER_DEPTH];
 690          test_attachment_completeness(ctx, GL_DEPTH, att);
 691          if (!att->Complete) {
 692             fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
 693             fbo_incomplete("depth attachment incomplete", -1);
 694             return;
 695          }
 696       }
 697       else if (i == -1) {
 698          att = &fb->Attachment[BUFFER_STENCIL];
 699          test_attachment_completeness(ctx, GL_STENCIL, att);
 700          if (!att->Complete) {
 701             fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
 702             fbo_incomplete("stencil attachment incomplete", -1);
 703             return;
 704          }
 705       }
 706       else {
 707          att = &fb->Attachment[BUFFER_COLOR0 + i];
 708          test_attachment_completeness(ctx, GL_COLOR, att);
 709          if (!att->Complete) {
 710             fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
 711             fbo_incomplete("color attachment incomplete", i);
 712             return;
 713          }
 714       }
 715
 716       /* get width, height, format of the renderbuffer/texture
 717        */
 718       if (att->Type == GL_TEXTURE) {
 719          const struct gl_texture_image *texImg =
 720             _mesa_get_attachment_teximage(att);
 721          minWidth = MIN2(minWidth, texImg->Width);
 722          maxWidth = MAX2(maxWidth, texImg->Width);
 723          minHeight = MIN2(minHeight, texImg->Height);
 724          maxHeight = MAX2(maxHeight, texImg->Height);
 725          f = texImg->_BaseFormat;
 726          attFormat = texImg->TexFormat;
 727          numImages++;
 728          if (!_mesa_is_legal_color_format(ctx, f) &&
 729              !is_legal_depth_format(ctx, f)) {
 730             fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
 731             fbo_incomplete("texture attachment incomplete", -1);
 732             return;
 733          }
 734       }
 735       else if (att->Type == GL_RENDERBUFFER_EXT) {
 736          minWidth = MIN2(minWidth, att->Renderbuffer->Width);
 737          maxWidth = MAX2(minWidth, att->Renderbuffer->Width);
 738          minHeight = MIN2(minHeight, att->Renderbuffer->Height);
 739          maxHeight = MAX2(minHeight, att->Renderbuffer->Height);
 740          f = att->Renderbuffer->InternalFormat;
 741          attFormat = att->Renderbuffer->Format;
 742          numImages++;
 743       }
 744       else {
 745          assert(att->Type == GL_NONE);
 746          continue;
 747       }
 748
 749       if (att->Renderbuffer && numSamples < 0) {
 750          /* first buffer */
 751          numSamples = att->Renderbuffer->NumSamples;
 752       }
 753
 754       /* check if integer color */
 755       fb->_IntegerColor = _mesa_is_format_integer_color(attFormat);
 756
 757       /* Error-check width, height, format, samples
 758        */
 759       if (numImages == 1) {
 760          /* save format, num samples */
 761          if (i >= 0) {
 762             intFormat = f;
 763          }
 764       }
 765       else {
 766          if (!ctx->Extensions.ARB_framebuffer_object) {
 767             /* check that width, height, format are same */
 768             if (minWidth != maxWidth || minHeight != maxHeight) {
 769                fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT;
 770                fbo_incomplete("width or height mismatch", -1);
 771                return;
 772             }
 773             /* check that all color buffer have same format */
 774             if (intFormat != GL_NONE && f != intFormat) {
 775                fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
 776                fbo_incomplete("format mismatch", -1);
 777                return;
 778             }
 779          }
 780          if (att->Renderbuffer &&
 781              att->Renderbuffer->NumSamples != numSamples) {
 782             fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE;
 783             fbo_incomplete("inconsistant number of samples", i);
 784             return;
 785          }
 786
 787       }
 788    }
 789
 790 #if FEATURE_GL
 791    if (ctx->API == API_OPENGL) {
 792       /* Check that all DrawBuffers are present */
 793       for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {
 794          if (fb->ColorDrawBuffer[j] != GL_NONE) {
 795             const struct gl_renderbuffer_attachment *att
 796                = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]);
 797             assert(att);
 798             if (att->Type == GL_NONE) {
 799                fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;
 800                fbo_incomplete("missing drawbuffer", j);
 801                return;
 802             }
 803          }
 804       }
 805
 806       /* Check that the ReadBuffer is present */
 807       if (fb->ColorReadBuffer != GL_NONE) {
 808          const struct gl_renderbuffer_attachment *att
 809             = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer);
 810          assert(att);
 811          if (att->Type == GL_NONE) {
 812             fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT;
 813             fbo_incomplete("missing readbuffer", -1);
 814             return;
 815          }
 816       }
 817    }
 818 #else
 819    (void) j;
 820 #endif
 821
 822    if (numImages == 0) {
 823       fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
 824       fbo_incomplete("no attachments", -1);
 825       return;
 826    }
 827
 828    /* Provisionally set status = COMPLETE ... */
 829    fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
 830
 831    /* ... but the driver may say the FB is incomplete.
 832     * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
 833     * if anything.
 834     */
 835    if (ctx->Driver.ValidateFramebuffer) {
 836       ctx->Driver.ValidateFramebuffer(ctx, fb);
 837       if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
 838          fbo_incomplete("driver marked FBO as incomplete", -1);
 839       }
 840    }
 841
 842    if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) {
 843       /*
 844        * Note that if ARB_framebuffer_object is supported and the attached
 845        * renderbuffers/textures are different sizes, the framebuffer
 846        * width/height will be set to the smallest width/height.
 847        */
 848       fb->Width = minWidth;
 849       fb->Height = minHeight;
 850
 851       /* finally, update the visual info for the framebuffer */
 852       _mesa_update_framebuffer_visual(ctx, fb);
 853    }
 854 }
 855
 856
 857 GLboolean GLAPIENTRY
 858 _mesa_IsRenderbufferEXT(GLuint renderbuffer)
 859 {
 860    GET_CURRENT_CONTEXT(ctx);
 861    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 862    if (renderbuffer) {
 863       struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
 864       if (rb != NULL && rb != &DummyRenderbuffer)
 865          return GL_TRUE;
 866    }
 867    return GL_FALSE;
 868 }
 869
 870
 871 void GLAPIENTRY
 872 _mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
 873 {
 874    struct gl_renderbuffer *newRb;
 875    GET_CURRENT_CONTEXT(ctx);
 876
 877    ASSERT_OUTSIDE_BEGIN_END(ctx);
 878
 879    if (target != GL_RENDERBUFFER_EXT) {
 880       _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)");
 881       return;
 882    }
 883
 884    /* No need to flush here since the render buffer binding has no
 885     * effect on rendering state.
 886     */
 887
 888    if (renderbuffer) {
 889       newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
 890       if (newRb == &DummyRenderbuffer) {
 891          /* ID was reserved, but no real renderbuffer object made yet */
 892          newRb = NULL;
 893       }
 894       else if (!newRb && ctx->Extensions.ARB_framebuffer_object) {
 895          /* All RB IDs must be Gen'd */
 896          _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)");
 897          return;
 898       }
 899
 900       if (!newRb) {
 901          /* create new renderbuffer object */
 902          newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer);
 903          if (!newRb) {
 904             _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");
 905             return;
 906          }
 907          ASSERT(newRb->AllocStorage);
 908          _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb);
 909          newRb->RefCount = 1; /* referenced by hash table */
 910       }
 911    }
 912    else {
 913       newRb = NULL;
 914    }
 915
 916    ASSERT(newRb != &DummyRenderbuffer);
 917
 918    _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb);
 919 }
 920
 921
 922 /**
 923  * If the given renderbuffer is anywhere attached to the framebuffer, detach
 924  * the renderbuffer.
 925  * This is used when a renderbuffer object is deleted.
 926  * The spec calls for unbinding.
 927  */
 928 static void
 929 detach_renderbuffer(struct gl_context *ctx,
 930                     struct gl_framebuffer *fb,
 931                     struct gl_renderbuffer *rb)
 932 {
 933    GLuint i;
 934    for (i = 0; i < BUFFER_COUNT; i++) {
 935       if (fb->Attachment[i].Renderbuffer == rb) {
 936          _mesa_remove_attachment(ctx, &fb->Attachment[i]);
 937       }
 938    }
 939    invalidate_framebuffer(fb);
 940 }
 941
 942
 943 void GLAPIENTRY
 944 _mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
 945 {
 946    GLint i;
 947    GET_CURRENT_CONTEXT(ctx);
 948
 949    ASSERT_OUTSIDE_BEGIN_END(ctx);
 950    FLUSH_VERTICES(ctx, _NEW_BUFFERS);
 951
 952    for (i = 0; i < n; i++) {
 953       if (renderbuffers[i] > 0) {
 954          struct gl_renderbuffer *rb;
 955          rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]);
 956          if (rb) {
 957             /* check if deleting currently bound renderbuffer object */
 958             if (rb == ctx->CurrentRenderbuffer) {
 959                /* bind default */
 960                ASSERT(rb->RefCount >= 2);
 961                _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
 962             }
 963
 964             if (ctx->DrawBuffer->Name) {
 965                detach_renderbuffer(ctx, ctx->DrawBuffer, rb);
 966             }
 967             if (ctx->ReadBuffer->Name && ctx->ReadBuffer != ctx->DrawBuffer) {
 968                detach_renderbuffer(ctx, ctx->ReadBuffer, rb);
 969             }
 970
 971             /* Remove from hash table immediately, to free the ID.
 972              * But the object will not be freed until it's no longer
 973              * referenced anywhere else.
 974              */
 975             _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);
 976
 977             if (rb != &DummyRenderbuffer) {
 978                /* no longer referenced by hash table */
 979                _mesa_reference_renderbuffer(&rb, NULL);
 980             }
 981          }
 982       }
 983    }
 984 }
 985
 986
 987 void GLAPIENTRY
 988 _mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)
 989 {
 990    GET_CURRENT_CONTEXT(ctx);
 991    GLuint first;
 992    GLint i;
 993
 994    ASSERT_OUTSIDE_BEGIN_END(ctx);
 995
 996    if (n < 0) {
 997       _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");
 998       return;
 999    }
1000
1001    if (!renderbuffers)
1002       return;
1003
1004    first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);
1005
1006    for (i = 0; i < n; i++) {
1007       GLuint name = first + i;
1008       renderbuffers[i] = name;
1009       /* insert dummy placeholder into hash table */
1010       _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
1011       _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer);
1012       _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
1013    }
1014 }
1015
1016
1017 /**
1018  * Given an internal format token for a render buffer, return the
1019  * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1020  * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1021  * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1022  *
1023  * This is similar to _mesa_base_tex_format() but the set of valid
1024  * internal formats is different.
1025  *
1026  * Note that even if a format is determined to be legal here, validation
1027  * of the FBO may fail if the format is not supported by the driver/GPU.
1028  *
1029  * \param internalFormat  as passed to glRenderbufferStorage()
1030  * \return the base internal format, or 0 if internalFormat is illegal
1031  */
1032 GLenum
1033 _mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
1034 {
1035    /*
1036     * Notes: some formats such as alpha, luminance, etc. were added
1037     * with GL_ARB_framebuffer_object.
1038     */
1039    switch (internalFormat) {
1040    case GL_ALPHA:
1041    case GL_ALPHA4:
1042    case GL_ALPHA8:
1043    case GL_ALPHA12:
1044    case GL_ALPHA16:
1045       return ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1046    case GL_LUMINANCE:
1047    case GL_LUMINANCE4:
1048    case GL_LUMINANCE8:
1049    case GL_LUMINANCE12:
1050    case GL_LUMINANCE16:
1051       return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1052    case GL_LUMINANCE_ALPHA:
1053    case GL_LUMINANCE4_ALPHA4:
1054    case GL_LUMINANCE6_ALPHA2:
1055    case GL_LUMINANCE8_ALPHA8:
1056    case GL_LUMINANCE12_ALPHA4:
1057    case GL_LUMINANCE12_ALPHA12:
1058    case GL_LUMINANCE16_ALPHA16:
1059       return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1060    case GL_INTENSITY:
1061    case GL_INTENSITY4:
1062    case GL_INTENSITY8:
1063    case GL_INTENSITY12:
1064    case GL_INTENSITY16:
1065       return ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1066    case GL_RGB:
1067    case GL_R3_G3_B2:
1068    case GL_RGB4:
1069    case GL_RGB5:
1070    case GL_RGB8:
1071    case GL_RGB10:
1072    case GL_RGB12:
1073    case GL_RGB16:
1074    case GL_SRGB8_EXT:
1075       return GL_RGB;
1076    case GL_RGBA:
1077    case GL_RGBA2:
1078    case GL_RGBA4:
1079    case GL_RGB5_A1:
1080    case GL_RGBA8:
1081    case GL_RGB10_A2:
1082    case GL_RGBA12:
1083    case GL_RGBA16:
1084    case GL_SRGB8_ALPHA8_EXT:
1085       return GL_RGBA;
1086    case GL_STENCIL_INDEX:
1087    case GL_STENCIL_INDEX1_EXT:
1088    case GL_STENCIL_INDEX4_EXT:
1089    case GL_STENCIL_INDEX8_EXT:
1090    case GL_STENCIL_INDEX16_EXT:
1091       return GL_STENCIL_INDEX;
1092    case GL_DEPTH_COMPONENT:
1093    case GL_DEPTH_COMPONENT16:
1094    case GL_DEPTH_COMPONENT24:
1095    case GL_DEPTH_COMPONENT32:
1096       return GL_DEPTH_COMPONENT;
1097    case GL_DEPTH_STENCIL_EXT:
1098    case GL_DEPTH24_STENCIL8_EXT:
1099       if (ctx->Extensions.EXT_packed_depth_stencil)
1100          return GL_DEPTH_STENCIL_EXT;
1101       else
1102          return 0;
1103    case GL_RED:
1104    case GL_R8:
1105    case GL_R16:
1106       return ctx->Extensions.ARB_texture_rg ? GL_RED : 0;
1107    case GL_RG:
1108    case GL_RG8:
1109    case GL_RG16:
1110       return ctx->Extensions.ARB_texture_rg ? GL_RG : 0;
1111    /* signed normalized texture formats */
1112    case GL_RED_SNORM:
1113    case GL_R8_SNORM:
1114    case GL_R16_SNORM:
1115       return ctx->Extensions.EXT_texture_snorm ? GL_RED : 0;
1116    case GL_RG_SNORM:
1117    case GL_RG8_SNORM:
1118    case GL_RG16_SNORM:
1119       return ctx->Extensions.EXT_texture_snorm ? GL_RG : 0;
1120    case GL_RGB_SNORM:
1121    case GL_RGB8_SNORM:
1122    case GL_RGB16_SNORM:
1123       return ctx->Extensions.EXT_texture_snorm ? GL_RGB : 0;
1124    case GL_RGBA_SNORM:
1125    case GL_RGBA8_SNORM:
1126    case GL_RGBA16_SNORM:
1127       return ctx->Extensions.EXT_texture_snorm ? GL_RGBA : 0;
1128    case GL_ALPHA_SNORM:
1129    case GL_ALPHA8_SNORM:
1130    case GL_ALPHA16_SNORM:
1131       return ctx->Extensions.EXT_texture_snorm &&
1132              ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1133    case GL_LUMINANCE_SNORM:
1134    case GL_LUMINANCE8_SNORM:
1135    case GL_LUMINANCE16_SNORM:
1136       return ctx->Extensions.EXT_texture_snorm &&
1137              ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1138    case GL_LUMINANCE_ALPHA_SNORM:
1139    case GL_LUMINANCE8_ALPHA8_SNORM:
1140    case GL_LUMINANCE16_ALPHA16_SNORM:
1141       return ctx->Extensions.EXT_texture_snorm &&
1142              ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1143    case GL_INTENSITY_SNORM:
1144    case GL_INTENSITY8_SNORM:
1145    case GL_INTENSITY16_SNORM:
1146       return ctx->Extensions.EXT_texture_snorm &&
1147              ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1148    /* XXX add floating point and integer formats eventually */
1149    default:
1150       return 0;
1151    }
1152 }
1153
1154
1155 /**
1156  * Invalidate a renderbuffer attachment.  Called from _mesa_HashWalk().
1157  */
1158 static void
1159 invalidate_rb(GLuint key, void *data, void *userData)
1160 {
1161    struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
1162    struct gl_renderbuffer *rb = (struct gl_renderbuffer *) userData;
1163
1164    /* If this is a user-created FBO */
1165    if (fb->Name) {
1166       GLuint i;
1167       for (i = 0; i < BUFFER_COUNT; i++) {
1168          struct gl_renderbuffer_attachment *att = fb->Attachment + i;
1169          if (att->Type == GL_RENDERBUFFER &&
1170              att->Renderbuffer == rb) {
1171             /* Mark fb status as indeterminate to force re-validation */
1172             fb->_Status = 0;
1173             return;
1174          }
1175       }
1176    }
1177 }
1178
1179
1180 /** sentinal value, see below */
1181 #define NO_SAMPLES 1000
1182
1183
1184 /**
1185  * Helper function used by _mesa_RenderbufferStorageEXT() and
1186  * _mesa_RenderbufferStorageMultisample().
1187  * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
1188  */
1189 static void
1190 renderbuffer_storage(GLenum target, GLenum internalFormat,
1191                      GLsizei width, GLsizei height, GLsizei samples)
1192 {
1193    const char *func = samples == NO_SAMPLES ?
1194       "glRenderbufferStorage" : "RenderbufferStorageMultisample";
1195    struct gl_renderbuffer *rb;
1196    GLenum baseFormat;
1197    GET_CURRENT_CONTEXT(ctx);
1198
1199    ASSERT_OUTSIDE_BEGIN_END(ctx);
1200
1201    if (target != GL_RENDERBUFFER_EXT) {
1202       _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
1203       return;
1204    }
1205
1206    baseFormat = _mesa_base_fbo_format(ctx, internalFormat);
1207    if (baseFormat == 0) {
1208       _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func);
1209       return;
1210    }
1211
1212    if (width < 1 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) {
1213       _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func);
1214       return;
1215    }
1216
1217    if (height < 1 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) {
1218       _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func);
1219       return;
1220    }
1221
1222    if (samples == NO_SAMPLES) {
1223       /* NumSamples == 0 indicates non-multisampling */
1224       samples = 0;
1225    }
1226    else if (samples > (GLsizei) ctx->Const.MaxSamples) {
1227       /* note: driver may choose to use more samples than what's requested */
1228       _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func);
1229       return;
1230    }
1231
1232    rb = ctx->CurrentRenderbuffer;
1233    if (!rb) {
1234       _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func);
1235       return;
1236    }
1237
1238    FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1239
1240    if (rb->InternalFormat == internalFormat &&
1241        rb->Width == (GLuint) width &&
1242        rb->Height == (GLuint) height) {
1243       /* no change in allocation needed */
1244       return;
1245    }
1246
1247    /* These MUST get set by the AllocStorage func */
1248    rb->Format = MESA_FORMAT_NONE;
1249    rb->NumSamples = samples;
1250
1251    /* Now allocate the storage */
1252    ASSERT(rb->AllocStorage);
1253    if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) {
1254       /* No error - check/set fields now */
1255       assert(rb->Format != MESA_FORMAT_NONE);
1256       assert(rb->Width == (GLuint) width);
1257       assert(rb->Height == (GLuint) height);
1258       rb->InternalFormat = internalFormat;
1259       rb->_BaseFormat = baseFormat;
1260       assert(rb->_BaseFormat != 0);
1261    }
1262    else {
1263       /* Probably ran out of memory - clear the fields */
1264       rb->Width = 0;
1265       rb->Height = 0;
1266       rb->Format = MESA_FORMAT_NONE;
1267       rb->InternalFormat = GL_NONE;
1268       rb->_BaseFormat = GL_NONE;
1269       rb->NumSamples = 0;
1270    }
1271
1272    /* Invalidate the framebuffers the renderbuffer is attached in. */
1273    if (rb->AttachedAnytime) {
1274       _mesa_HashWalk(ctx->Shared->FrameBuffers, invalidate_rb, rb);
1275    }
1276 }
1277
1278
1279 #if FEATURE_OES_EGL_image
1280 void GLAPIENTRY
1281 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)
1282 {
1283    struct gl_renderbuffer *rb;
1284    GET_CURRENT_CONTEXT(ctx);
1285    ASSERT_OUTSIDE_BEGIN_END(ctx);
1286
1287    if (!ctx->Extensions.OES_EGL_image) {
1288       _mesa_error(ctx, GL_INVALID_OPERATION,
1289                   "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1290       return;
1291    }
1292
1293    if (target != GL_RENDERBUFFER) {
1294       _mesa_error(ctx, GL_INVALID_ENUM,
1295                   "EGLImageTargetRenderbufferStorageOES");
1296       return;
1297    }
1298
1299    rb = ctx->CurrentRenderbuffer;
1300    if (!rb) {
1301       _mesa_error(ctx, GL_INVALID_OPERATION,
1302                   "EGLImageTargetRenderbufferStorageOES");
1303       return;
1304    }
1305
1306    FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1307
1308    ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image);
1309 }
1310 #endif
1311
1312
1313 /**
1314  * Helper function for _mesa_GetRenderbufferParameterivEXT() and
1315  * _mesa_GetFramebufferAttachmentParameterivEXT()
1316  * We have to be careful to respect the base format.  For example, if a
1317  * renderbuffer/texture was created with internalFormat=GL_RGB but the
1318  * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1319  * we need to return zero.
1320  */
1321 static GLint
1322 get_component_bits(GLenum pname, GLenum baseFormat, gl_format format)
1323 {
1324    switch (pname) {
1325    case GL_RENDERBUFFER_RED_SIZE_EXT:
1326    case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
1327       if (baseFormat == GL_RGB || baseFormat == GL_RGBA ||
1328           baseFormat == GL_RG || baseFormat == GL_RED)
1329          return _mesa_get_format_bits(format, pname);
1330       else
1331          return 0;
1332    case GL_RENDERBUFFER_GREEN_SIZE_EXT:
1333    case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
1334       if (baseFormat == GL_RGB || baseFormat == GL_RGBA || baseFormat == GL_RG)
1335          return _mesa_get_format_bits(format, pname);
1336       else
1337          return 0;
1338    case GL_RENDERBUFFER_BLUE_SIZE_EXT:
1339    case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
1340       if (baseFormat == GL_RGB || baseFormat == GL_RGBA)
1341          return _mesa_get_format_bits(format, pname);
1342       else
1343          return 0;
1344    case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
1345    case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
1346       if (baseFormat == GL_RGBA || baseFormat == GL_ALPHA ||
1347           baseFormat == GL_LUMINANCE_ALPHA)
1348          return _mesa_get_format_bits(format, pname);
1349       else
1350          return 0;
1351    case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
1352    case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
1353       if (baseFormat == GL_DEPTH_COMPONENT || baseFormat == GL_DEPTH_STENCIL)
1354          return _mesa_get_format_bits(format, pname);
1355       else
1356          return 0;
1357    case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
1358    case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
1359       if (baseFormat == GL_STENCIL_INDEX || baseFormat == GL_DEPTH_STENCIL)
1360          return _mesa_get_format_bits(format, pname);
1361       else
1362          return 0;
1363    default:
1364       return 0;
1365    }
1366 }
1367
1368
1369
1370 void GLAPIENTRY
1371 _mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
1372                              GLsizei width, GLsizei height)
1373 {
1374    /* GL_ARB_fbo says calling this function is equivalent to calling
1375     * glRenderbufferStorageMultisample() with samples=0.  We pass in
1376     * a token value here just for error reporting purposes.
1377     */
1378    renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES);
1379 }
1380
1381
1382 void GLAPIENTRY
1383 _mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples,
1384                                      GLenum internalFormat,
1385                                      GLsizei width, GLsizei height)
1386 {
1387    renderbuffer_storage(target, internalFormat, width, height, samples);
1388 }
1389
1390
1391 /**
1392  * OpenGL ES version of glRenderBufferStorage.
1393  */
1394 void GLAPIENTRY
1395 _es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
1396                            GLsizei width, GLsizei height)
1397 {
1398    switch (internalFormat) {
1399    case GL_RGB565:
1400       /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1401       /* choose a closest format */
1402       internalFormat = GL_RGB5;
1403       break;
1404    default:
1405       break;
1406    }
1407
1408    renderbuffer_storage(target, internalFormat, width, height, 0);
1409 }
1410
1411
1412 void GLAPIENTRY
1413 _mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)
1414 {
1415    struct gl_renderbuffer *rb;
1416    GET_CURRENT_CONTEXT(ctx);
1417
1418    ASSERT_OUTSIDE_BEGIN_END(ctx);
1419
1420    if (target != GL_RENDERBUFFER_EXT) {
1421       _mesa_error(ctx, GL_INVALID_ENUM,
1422                   "glGetRenderbufferParameterivEXT(target)");
1423       return;
1424    }
1425
1426    rb = ctx->CurrentRenderbuffer;
1427    if (!rb) {
1428       _mesa_error(ctx, GL_INVALID_OPERATION,
1429                   "glGetRenderbufferParameterivEXT");
1430       return;
1431    }
1432
1433    /* No need to flush here since we're just quering state which is
1434     * not effected by rendering.
1435     */
1436
1437    switch (pname) {
1438    case GL_RENDERBUFFER_WIDTH_EXT:
1439       *params = rb->Width;
1440       return;
1441    case GL_RENDERBUFFER_HEIGHT_EXT:
1442       *params = rb->Height;
1443       return;
1444    case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT:
1445       *params = rb->InternalFormat;
1446       return;
1447    case GL_RENDERBUFFER_RED_SIZE_EXT:
1448    case GL_RENDERBUFFER_GREEN_SIZE_EXT:
1449    case GL_RENDERBUFFER_BLUE_SIZE_EXT:
1450    case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
1451    case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
1452    case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
1453       *params = get_component_bits(pname, rb->_BaseFormat, rb->Format);
1454       break;
1455    case GL_RENDERBUFFER_SAMPLES:
1456       if (ctx->Extensions.ARB_framebuffer_object) {
1457          *params = rb->NumSamples;
1458          break;
1459       }
1460       /* fallthrough */
1461    default:
1462       _mesa_error(ctx, GL_INVALID_ENUM,
1463                   "glGetRenderbufferParameterivEXT(target)");
1464       return;
1465    }
1466 }
1467
1468
1469 GLboolean GLAPIENTRY
1470 _mesa_IsFramebufferEXT(GLuint framebuffer)
1471 {
1472    GET_CURRENT_CONTEXT(ctx);
1473    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
1474    if (framebuffer) {
1475       struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer);
1476       if (rb != NULL && rb != &DummyFramebuffer)
1477          return GL_TRUE;
1478    }
1479    return GL_FALSE;
1480 }
1481
1482
1483 /**
1484  * Check if any of the attachments of the given framebuffer are textures
1485  * (render to texture).  Call ctx->Driver.RenderTexture() for such
1486  * attachments.
1487  */
1488 static void
1489 check_begin_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
1490 {
1491    GLuint i;
1492    ASSERT(ctx->Driver.RenderTexture);
1493
1494    if (fb->Name == 0)
1495       return; /* can't render to texture with winsys framebuffers */
1496
1497    for (i = 0; i < BUFFER_COUNT; i++) {
1498       struct gl_renderbuffer_attachment *att = fb->Attachment + i;
1499       if (att->Texture && _mesa_get_attachment_teximage(att)) {
1500          ctx->Driver.RenderTexture(ctx, fb, att);
1501       }
1502    }
1503 }
1504
1505
1506 /**
1507  * Examine all the framebuffer's attachments to see if any are textures.
1508  * If so, call ctx->Driver.FinishRenderTexture() for each texture to
1509  * notify the device driver that the texture image may have changed.
1510  */
1511 static void
1512 check_end_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
1513 {
1514    if (fb->Name == 0)
1515       return; /* can't render to texture with winsys framebuffers */
1516
1517    if (ctx->Driver.FinishRenderTexture) {
1518       GLuint i;
1519       for (i = 0; i < BUFFER_COUNT; i++) {
1520          struct gl_renderbuffer_attachment *att = fb->Attachment + i;
1521          if (att->Texture && att->Renderbuffer) {
1522             ctx->Driver.FinishRenderTexture(ctx, att);
1523          }
1524       }
1525    }
1526 }
1527
1528
1529 void GLAPIENTRY
1530 _mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
1531 {
1532    struct gl_framebuffer *newDrawFb, *newReadFb;
1533    struct gl_framebuffer *oldDrawFb, *oldReadFb;
1534    GLboolean bindReadBuf, bindDrawBuf;
1535    GET_CURRENT_CONTEXT(ctx);
1536
1537 #ifdef DEBUG
1538    if (ctx->Extensions.ARB_framebuffer_object) {
1539       ASSERT(ctx->Extensions.EXT_framebuffer_object);
1540       ASSERT(ctx->Extensions.EXT_framebuffer_blit);
1541    }
1542 #endif
1543
1544    ASSERT_OUTSIDE_BEGIN_END(ctx);
1545
1546    if (!ctx->Extensions.EXT_framebuffer_object) {
1547       _mesa_error(ctx, GL_INVALID_OPERATION,
1548                   "glBindFramebufferEXT(unsupported)");
1549       return;
1550    }
1551
1552    switch (target) {
1553 #if FEATURE_EXT_framebuffer_blit
1554    case GL_DRAW_FRAMEBUFFER_EXT:
1555       if (!ctx->Extensions.EXT_framebuffer_blit) {
1556          _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
1557          return;
1558       }
1559       bindDrawBuf = GL_TRUE;
1560       bindReadBuf = GL_FALSE;
1561       break;
1562    case GL_READ_FRAMEBUFFER_EXT:
1563       if (!ctx->Extensions.EXT_framebuffer_blit) {
1564          _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
1565          return;
1566       }
1567       bindDrawBuf = GL_FALSE;
1568       bindReadBuf = GL_TRUE;
1569       break;
1570 #endif
1571    case GL_FRAMEBUFFER_EXT:
1572       bindDrawBuf = GL_TRUE;
1573       bindReadBuf = GL_TRUE;
1574       break;
1575    default:
1576       _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
1577       return;
1578    }
1579
1580    if (framebuffer) {
1581       /* Binding a user-created framebuffer object */
1582       newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer);
1583       if (newDrawFb == &DummyFramebuffer) {
1584          /* ID was reserved, but no real framebuffer object made yet */
1585          newDrawFb = NULL;
1586       }
1587       else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) {
1588          /* All FBO IDs must be Gen'd */
1589          _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)");
1590          return;
1591       }
1592
1593       if (!newDrawFb) {
1594          /* create new framebuffer object */
1595          newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);
1596          if (!newDrawFb) {
1597             _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");
1598             return;
1599          }
1600          _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb);
1601       }
1602       newReadFb = newDrawFb;
1603    }
1604    else {
1605       /* Binding the window system framebuffer (which was originally set
1606        * with MakeCurrent).
1607        */
1608       newDrawFb = ctx->WinSysDrawBuffer;
1609       newReadFb = ctx->WinSysReadBuffer;
1610    }
1611
1612    ASSERT(newDrawFb);
1613    ASSERT(newDrawFb != &DummyFramebuffer);
1614
1615    /* save pointers to current/old framebuffers */
1616    oldDrawFb = ctx->DrawBuffer;
1617    oldReadFb = ctx->ReadBuffer;
1618
1619    /* check if really changing bindings */
1620    if (oldDrawFb == newDrawFb)
1621       bindDrawBuf = GL_FALSE;
1622    if (oldReadFb == newReadFb)
1623       bindReadBuf = GL_FALSE;
1624
1625    /*
1626     * OK, now bind the new Draw/Read framebuffers, if they're changing.
1627     *
1628     * We also check if we're beginning and/or ending render-to-texture.
1629     * When a framebuffer with texture attachments is unbound, call
1630     * ctx->Driver.FinishRenderTexture().
1631     * When a framebuffer with texture attachments is bound, call
1632     * ctx->Driver.RenderTexture().
1633     *
1634     * Note that if the ReadBuffer has texture attachments we don't consider
1635     * that a render-to-texture case.
1636     */
1637    if (bindReadBuf) {
1638       FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1639
1640       /* check if old readbuffer was render-to-texture */
1641       check_end_texture_render(ctx, oldReadFb);
1642
1643       _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb);
1644    }
1645
1646    if (bindDrawBuf) {
1647       FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1648
1649       /* check if old read/draw buffers were render-to-texture */
1650       if (!bindReadBuf)
1651          check_end_texture_render(ctx, oldReadFb);
1652
1653       if (oldDrawFb != oldReadFb)
1654          check_end_texture_render(ctx, oldDrawFb);
1655
1656       /* check if newly bound framebuffer has any texture attachments */
1657       check_begin_texture_render(ctx, newDrawFb);
1658
1659       _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb);
1660    }
1661
1662    if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) {
1663       ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb);
1664    }
1665 }
1666
1667
1668 void GLAPIENTRY
1669 _mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
1670 {
1671    GLint i;
1672    GET_CURRENT_CONTEXT(ctx);
1673
1674    ASSERT_OUTSIDE_BEGIN_END(ctx);
1675    FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1676
1677    for (i = 0; i < n; i++) {
1678       if (framebuffers[i] > 0) {
1679          struct gl_framebuffer *fb;
1680          fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]);
1681          if (fb) {
1682             ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);
1683
1684             /* check if deleting currently bound framebuffer object */
1685             if (ctx->Extensions.EXT_framebuffer_blit) {
1686                /* separate draw/read binding points */
1687                if (fb == ctx->DrawBuffer) {
1688                   /* bind default */
1689                   ASSERT(fb->RefCount >= 2);
1690                   _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
1691                }
1692                if (fb == ctx->ReadBuffer) {
1693                   /* bind default */
1694                   ASSERT(fb->RefCount >= 2);
1695                   _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);
1696                }
1697             }
1698             else {
1699                /* only one binding point for read/draw buffers */
1700                if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) {
1701                   /* bind default */
1702                   ASSERT(fb->RefCount >= 2);
1703                   _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
1704                }
1705             }
1706
1707             /* remove from hash table immediately, to free the ID */
1708             _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);
1709
1710             if (fb != &DummyFramebuffer) {
1711                /* But the object will not be freed until it's no longer
1712                 * bound in any context.
1713                 */
1714                _mesa_reference_framebuffer(&fb, NULL);
1715             }
1716          }
1717       }
1718    }
1719 }
1720
1721
1722 void GLAPIENTRY
1723 _mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers)
1724 {
1725    GET_CURRENT_CONTEXT(ctx);
1726    GLuint first;
1727    GLint i;
1728
1729    ASSERT_OUTSIDE_BEGIN_END(ctx);
1730
1731    if (n < 0) {
1732       _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)");
1733       return;
1734    }
1735
1736    if (!framebuffers)
1737       return;
1738
1739    first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n);
1740
1741    for (i = 0; i < n; i++) {
1742       GLuint name = first + i;
1743       framebuffers[i] = name;
1744       /* insert dummy placeholder into hash table */
1745       _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
1746       _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer);
1747       _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
1748    }
1749 }
1750
1751
1752
1753 GLenum GLAPIENTRY
1754 _mesa_CheckFramebufferStatusEXT(GLenum target)
1755 {
1756    struct gl_framebuffer *buffer;
1757    GET_CURRENT_CONTEXT(ctx);
1758
1759    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
1760
1761    buffer = get_framebuffer_target(ctx, target);
1762    if (!buffer) {
1763       _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
1764       return 0;
1765    }
1766
1767    if (buffer->Name == 0) {
1768       /* The window system / default framebuffer is always complete */
1769       return GL_FRAMEBUFFER_COMPLETE_EXT;
1770    }
1771
1772    /* No need to flush here */
1773
1774    if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) {
1775       _mesa_test_framebuffer_completeness(ctx, buffer);
1776    }
1777
1778    return buffer->_Status;
1779 }
1780
1781
1782
1783 /**
1784  * Common code called by glFramebufferTexture1D/2D/3DEXT().
1785  */
1786 static void
1787 framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target,
1788                     GLenum attachment, GLenum textarget, GLuint texture,
1789                     GLint level, GLint zoffset)
1790 {
1791    struct gl_renderbuffer_attachment *att;
1792    struct gl_texture_object *texObj = NULL;
1793    struct gl_framebuffer *fb;
1794
1795    ASSERT_OUTSIDE_BEGIN_END(ctx);
1796
1797    fb = get_framebuffer_target(ctx, target);
1798    if (!fb) {
1799       _mesa_error(ctx, GL_INVALID_ENUM,
1800                   "glFramebufferTexture%sEXT(target=0x%x)", caller, target);
1801       return;
1802    }
1803
1804    /* check framebuffer binding */
1805    if (fb->Name == 0) {
1806       _mesa_error(ctx, GL_INVALID_OPERATION,
1807                   "glFramebufferTexture%sEXT", caller);
1808       return;
1809    }
1810
1811
1812    /* The textarget, level, and zoffset parameters are only validated if
1813     * texture is non-zero.
1814     */
1815    if (texture) {
1816       GLboolean err = GL_TRUE;
1817
1818       texObj = _mesa_lookup_texture(ctx, texture);
1819       if (texObj != NULL) {
1820          if (textarget == 0) {
1821             /* XXX what's the purpose of this? */
1822             err = (texObj->Target != GL_TEXTURE_3D) &&
1823                 (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) &&
1824                 (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT);
1825          }
1826          else {
1827             err = (texObj->Target == GL_TEXTURE_CUBE_MAP)
1828                 ? !IS_CUBE_FACE(textarget)
1829                 : (texObj->Target != textarget);
1830          }
1831       }
1832       else {
1833          /* can't render to a non-existant texture */
1834          _mesa_error(ctx, GL_INVALID_OPERATION,
1835                      "glFramebufferTexture%sEXT(non existant texture)",
1836                      caller);
1837          return;
1838       }
1839
1840       if (err) {
1841          _mesa_error(ctx, GL_INVALID_OPERATION,
1842                      "glFramebufferTexture%sEXT(texture target mismatch)",
1843                      caller);
1844          return;
1845       }
1846
1847       if (texObj->Target == GL_TEXTURE_3D) {
1848          const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
1849          if (zoffset < 0 || zoffset >= maxSize) {
1850             _mesa_error(ctx, GL_INVALID_VALUE,
1851                         "glFramebufferTexture%sEXT(zoffset)", caller);
1852             return;
1853          }
1854       }
1855       else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) ||
1856                (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) {
1857          if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) {
1858             _mesa_error(ctx, GL_INVALID_VALUE,
1859                         "glFramebufferTexture%sEXT(layer)", caller);
1860             return;
1861          }
1862       }
1863
1864       if ((level < 0) ||
1865           (level >= _mesa_max_texture_levels(ctx, texObj->Target))) {
1866          _mesa_error(ctx, GL_INVALID_VALUE,
1867                      "glFramebufferTexture%sEXT(level)", caller);
1868          return;
1869       }
1870    }
1871
1872    att = _mesa_get_attachment(ctx, fb, attachment);
1873    if (att == NULL) {
1874       _mesa_error(ctx, GL_INVALID_ENUM,
1875                   "glFramebufferTexture%sEXT(attachment)", caller);
1876       return;
1877    }
1878
1879    FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1880
1881    _glthread_LOCK_MUTEX(fb->Mutex);
1882    if (texObj) {
1883       _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget,
1884                                    level, zoffset);
1885       /* Set the render-to-texture flag.  We'll check this flag in
1886        * glTexImage() and friends to determine if we need to revalidate
1887        * any FBOs that might be rendering into this texture.
1888        * This flag never gets cleared since it's non-trivial to determine
1889        * when all FBOs might be done rendering to this texture.  That's OK
1890        * though since it's uncommon to render to a texture then repeatedly
1891        * call glTexImage() to change images in the texture.
1892        */
1893       texObj->_RenderToTexture = GL_TRUE;
1894    }
1895    else {
1896       _mesa_remove_attachment(ctx, att);
1897    }
1898
1899    invalidate_framebuffer(fb);
1900
1901    _glthread_UNLOCK_MUTEX(fb->Mutex);
1902 }
1903
1904
1905
1906 void GLAPIENTRY
1907 _mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,
1908                               GLenum textarget, GLuint texture, GLint level)
1909 {
1910    GET_CURRENT_CONTEXT(ctx);
1911
1912    if ((texture != 0) && (textarget != GL_TEXTURE_1D)) {
1913       _mesa_error(ctx, GL_INVALID_ENUM,
1914                   "glFramebufferTexture1DEXT(textarget)");
1915       return;
1916    }
1917
1918    framebuffer_texture(ctx, "1D", target, attachment, textarget, texture,
1919                        level, 0);
1920 }
1921
1922
1923 void GLAPIENTRY
1924 _mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,
1925                               GLenum textarget, GLuint texture, GLint level)
1926 {
1927    GET_CURRENT_CONTEXT(ctx);
1928
1929    if ((texture != 0) &&
1930        (textarget != GL_TEXTURE_2D) &&
1931        (textarget != GL_TEXTURE_RECTANGLE_ARB) &&
1932        (!IS_CUBE_FACE(textarget))) {
1933       _mesa_error(ctx, GL_INVALID_OPERATION,
1934                   "glFramebufferTexture2DEXT(textarget=0x%x)", textarget);
1935       return;
1936    }
1937
1938    framebuffer_texture(ctx, "2D", target, attachment, textarget, texture,
1939                        level, 0);
1940 }
1941
1942
1943 void GLAPIENTRY
1944 _mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,
1945                               GLenum textarget, GLuint texture,
1946                               GLint level, GLint zoffset)
1947 {
1948    GET_CURRENT_CONTEXT(ctx);
1949
1950    if ((texture != 0) && (textarget != GL_TEXTURE_3D)) {
1951       _mesa_error(ctx, GL_INVALID_ENUM,
1952                   "glFramebufferTexture3DEXT(textarget)");
1953       return;
1954    }
1955
1956    framebuffer_texture(ctx, "3D", target, attachment, textarget, texture,
1957                        level, zoffset);
1958 }
1959
1960
1961 void GLAPIENTRY
1962 _mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment,
1963                                  GLuint texture, GLint level, GLint layer)
1964 {
1965    GET_CURRENT_CONTEXT(ctx);
1966
1967    framebuffer_texture(ctx, "Layer", target, attachment, 0, texture,
1968                        level, layer);
1969 }
1970
1971
1972 void GLAPIENTRY
1973 _mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
1974                                  GLenum renderbufferTarget,
1975                                  GLuint renderbuffer)
1976 {
1977    struct gl_renderbuffer_attachment *att;
1978    struct gl_framebuffer *fb;
1979    struct gl_renderbuffer *rb;
1980    GET_CURRENT_CONTEXT(ctx);
1981
1982    ASSERT_OUTSIDE_BEGIN_END(ctx);
1983
1984    fb = get_framebuffer_target(ctx, target);
1985    if (!fb) {
1986       _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)");
1987       return;
1988    }
1989
1990    if (renderbufferTarget != GL_RENDERBUFFER_EXT) {
1991       _mesa_error(ctx, GL_INVALID_ENUM,
1992                   "glFramebufferRenderbufferEXT(renderbufferTarget)");
1993       return;
1994    }
1995
1996    if (fb->Name == 0) {
1997       /* Can't attach new renderbuffers to a window system framebuffer */
1998       _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT");
1999       return;
2000    }
2001
2002    att = _mesa_get_attachment(ctx, fb, attachment);
2003    if (att == NULL) {
2004       _mesa_error(ctx, GL_INVALID_ENUM,
2005                   "glFramebufferRenderbufferEXT(invalid attachment %s)",
2006                   _mesa_lookup_enum_by_nr(attachment));
2007       return;
2008    }
2009
2010    if (renderbuffer) {
2011       rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
2012       if (!rb) {
2013          _mesa_error(ctx, GL_INVALID_OPERATION,
2014                      "glFramebufferRenderbufferEXT(non-existant"
2015                      " renderbuffer %u)", renderbuffer);
2016          return;
2017       }
2018       else if (rb == &DummyRenderbuffer) {
2019          /* This is what NVIDIA does */
2020          _mesa_error(ctx, GL_INVALID_VALUE,
2021                      "glFramebufferRenderbufferEXT(renderbuffer %u)",
2022                      renderbuffer);
2023          return;
2024       }
2025    }
2026    else {
2027       /* remove renderbuffer attachment */
2028       rb = NULL;
2029    }
2030
2031    if (attachment == GL_DEPTH_STENCIL_ATTACHMENT &&
2032        rb && rb->Format != MESA_FORMAT_NONE) {
2033       /* make sure the renderbuffer is a depth/stencil format */
2034       const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
2035       if (baseFormat != GL_DEPTH_STENCIL) {
2036          _mesa_error(ctx, GL_INVALID_OPERATION,
2037                      "glFramebufferRenderbufferEXT(renderbuffer"
2038                      " is not DEPTH_STENCIL format)");
2039          return;
2040       }
2041    }
2042
2043
2044    FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2045
2046    assert(ctx->Driver.FramebufferRenderbuffer);
2047    ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb);
2048
2049    /* Some subsequent GL commands may depend on the framebuffer's visual
2050     * after the binding is updated.  Update visual info now.
2051     */
2052    _mesa_update_framebuffer_visual(ctx, fb);
2053 }
2054
2055
2056 void GLAPIENTRY
2057 _mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
2058                                              GLenum pname, GLint *params)
2059 {
2060    const struct gl_renderbuffer_attachment *att;
2061    struct gl_framebuffer *buffer;
2062    GET_CURRENT_CONTEXT(ctx);
2063
2064    ASSERT_OUTSIDE_BEGIN_END(ctx);
2065
2066    buffer = get_framebuffer_target(ctx, target);
2067    if (!buffer) {
2068       _mesa_error(ctx, GL_INVALID_ENUM,
2069                   "glGetFramebufferAttachmentParameterivEXT(target)");
2070       return;
2071    }
2072
2073    if (buffer->Name == 0) {
2074       /* the default / window-system FBO */
2075       att = _mesa_get_fb0_attachment(ctx, buffer, attachment);
2076    }
2077    else {
2078       /* user-created framebuffer FBO */
2079       att = _mesa_get_attachment(ctx, buffer, attachment);
2080    }
2081
2082    if (att == NULL) {
2083       _mesa_error(ctx, GL_INVALID_ENUM,
2084                   "glGetFramebufferAttachmentParameterivEXT(attachment)");
2085       return;
2086    }
2087
2088    if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
2089       /* the depth and stencil attachments must point to the same buffer */
2090       const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt;
2091       depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT);
2092       stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT);
2093       if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) {
2094          _mesa_error(ctx, GL_INVALID_OPERATION,
2095                      "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2096                      " attachments differ)");
2097          return;
2098       }
2099    }
2100
2101    /* No need to flush here */
2102
2103    switch (pname) {
2104    case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:
2105       *params = buffer->Name == 0 ? GL_FRAMEBUFFER_DEFAULT : att->Type;
2106       return;
2107    case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:
2108       if (att->Type == GL_RENDERBUFFER_EXT) {
2109          *params = att->Renderbuffer->Name;
2110       }
2111       else if (att->Type == GL_TEXTURE) {
2112          *params = att->Texture->Name;
2113       }
2114       else {
2115          assert(att->Type == GL_NONE);
2116          *params = 0;
2117       }
2118       return;
2119    case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:
2120       if (att->Type == GL_TEXTURE) {
2121          *params = att->TextureLevel;
2122       }
2123       else {
2124          _mesa_error(ctx, GL_INVALID_ENUM,
2125                      "glGetFramebufferAttachmentParameterivEXT(pname)");
2126       }
2127       return;
2128    case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:
2129       if (att->Type == GL_TEXTURE) {
2130          if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) {
2131             *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace;
2132          }
2133          else {
2134             *params = 0;
2135          }
2136       }
2137       else {
2138          _mesa_error(ctx, GL_INVALID_ENUM,
2139                      "glGetFramebufferAttachmentParameterivEXT(pname)");
2140       }
2141       return;
2142    case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:
2143       if (att->Type == GL_TEXTURE) {
2144          if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) {
2145             *params = att->Zoffset;
2146          }
2147          else {
2148             *params = 0;
2149          }
2150       }
2151       else {
2152          _mesa_error(ctx, GL_INVALID_ENUM,
2153                      "glGetFramebufferAttachmentParameterivEXT(pname)");
2154       }
2155       return;
2156    case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:
2157       if (!ctx->Extensions.ARB_framebuffer_object) {
2158          _mesa_error(ctx, GL_INVALID_ENUM,
2159                      "glGetFramebufferAttachmentParameterivEXT(pname)");
2160       }
2161       else {
2162          if (ctx->Extensions.EXT_framebuffer_sRGB && ctx->Const.sRGBCapable) {
2163             *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format);
2164          }
2165          else {
2166             /* According to ARB_framebuffer_sRGB, we should return LINEAR
2167              * if the sRGB conversion is unsupported. */
2168             *params = GL_LINEAR;
2169          }
2170       }
2171       return;
2172    case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:
2173       if (!ctx->Extensions.ARB_framebuffer_object) {
2174          _mesa_error(ctx, GL_INVALID_ENUM,
2175                      "glGetFramebufferAttachmentParameterivEXT(pname)");
2176          return;
2177       }
2178       else {
2179          gl_format format = att->Renderbuffer->Format;
2180          if (format == MESA_FORMAT_CI8 || format == MESA_FORMAT_S8) {
2181             /* special cases */
2182             *params = GL_INDEX;
2183          }
2184          else {
2185             *params = _mesa_get_format_datatype(format);
2186          }
2187       }
2188       return;
2189    case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
2190    case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
2191    case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
2192    case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
2193    case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
2194    case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
2195       if (!ctx->Extensions.ARB_framebuffer_object) {
2196          _mesa_error(ctx, GL_INVALID_ENUM,
2197                      "glGetFramebufferAttachmentParameterivEXT(pname)");
2198       }
2199       else if (att->Texture) {
2200          const struct gl_texture_image *texImage =
2201             _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target,
2202                                    att->TextureLevel);
2203          if (texImage) {
2204             *params = get_component_bits(pname, texImage->_BaseFormat,
2205                                          texImage->TexFormat);
2206          }
2207          else {
2208             *params = 0;
2209          }
2210       }
2211       else if (att->Renderbuffer) {
2212          *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat,
2213                                       att->Renderbuffer->Format);
2214       }
2215       else {
2216          *params = 0;
2217       }
2218       return;
2219    default:
2220       _mesa_error(ctx, GL_INVALID_ENUM,
2221                   "glGetFramebufferAttachmentParameterivEXT(pname)");
2222       return;
2223    }
2224 }
2225
2226
2227 void GLAPIENTRY
2228 _mesa_GenerateMipmapEXT(GLenum target)
2229 {
2230    struct gl_texture_object *texObj;
2231    GET_CURRENT_CONTEXT(ctx);
2232
2233    ASSERT_OUTSIDE_BEGIN_END(ctx);
2234    FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2235
2236    switch (target) {
2237    case GL_TEXTURE_1D:
2238    case GL_TEXTURE_2D:
2239    case GL_TEXTURE_3D:
2240    case GL_TEXTURE_CUBE_MAP:
2241       /* OK, legal value */
2242       break;
2243    default:
2244       /* XXX need to implement GL_TEXTURE_1D_ARRAY and GL_TEXTURE_2D_ARRAY */
2245       _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target)");
2246       return;
2247    }
2248
2249    texObj = _mesa_get_current_tex_object(ctx, target);
2250
2251    if (texObj->BaseLevel >= texObj->MaxLevel) {
2252       /* nothing to do */
2253       return;
2254    }
2255
2256    if (texObj->Target == GL_TEXTURE_CUBE_MAP &&
2257        !_mesa_cube_complete(texObj)) {
2258       _mesa_error(ctx, GL_INVALID_OPERATION,
2259                   "glGenerateMipmap(incomplete cube map)");
2260       return;
2261    }
2262
2263    _mesa_lock_texture(ctx, texObj);
2264    if (target == GL_TEXTURE_CUBE_MAP) {
2265       GLuint face;
2266       for (face = 0; face < 6; face++)
2267          ctx->Driver.GenerateMipmap(ctx,
2268                                     GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face,
2269                                     texObj);
2270    }
2271    else {
2272       ctx->Driver.GenerateMipmap(ctx, target, texObj);
2273    }
2274    _mesa_unlock_texture(ctx, texObj);
2275 }
2276
2277
2278 #if FEATURE_EXT_framebuffer_blit
2279
2280 static const struct gl_renderbuffer_attachment *
2281 find_attachment(const struct gl_framebuffer *fb,
2282                 const struct gl_renderbuffer *rb)
2283 {
2284    GLuint i;
2285    for (i = 0; i < Elements(fb->Attachment); i++) {
2286       if (fb->Attachment[i].Renderbuffer == rb)
2287          return &fb->Attachment[i];
2288    }
2289    return NULL;
2290 }
2291
2292
2293
2294 /**
2295  * Blit rectangular region, optionally from one framebuffer to another.
2296  *
2297  * Note, if the src buffer is multisampled and the dest is not, this is
2298  * when the samples must be resolved to a single color.
2299  */
2300 void GLAPIENTRY
2301 _mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
2302                          GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
2303                          GLbitfield mask, GLenum filter)
2304 {
2305    const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT |
2306                                      GL_DEPTH_BUFFER_BIT |
2307                                      GL_STENCIL_BUFFER_BIT);
2308    const struct gl_framebuffer *readFb, *drawFb;
2309    const struct gl_renderbuffer *colorReadRb, *colorDrawRb;
2310    GET_CURRENT_CONTEXT(ctx);
2311
2312    ASSERT_OUTSIDE_BEGIN_END(ctx);
2313    FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2314
2315    if (MESA_VERBOSE & VERBOSE_API)
2316       _mesa_debug(ctx,
2317                   "glBlitFramebuffer(%d, %d, %d, %d,  %d, %d, %d, %d, 0x%x, %s)\n",
2318                   srcX0, srcY0, srcX1, srcY1,
2319                   dstX0, dstY0, dstX1, dstY1,
2320                   mask, _mesa_lookup_enum_by_nr(filter));
2321
2322    if (ctx->NewState) {
2323       _mesa_update_state(ctx);
2324    }
2325
2326    readFb = ctx->ReadBuffer;
2327    drawFb = ctx->DrawBuffer;
2328
2329    if (!readFb || !drawFb) {
2330       /* This will normally never happen but someday we may want to
2331        * support MakeCurrent() with no drawables.
2332        */
2333       return;
2334    }
2335
2336    /* check for complete framebuffers */
2337    if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
2338        readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
2339       _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
2340                   "glBlitFramebufferEXT(incomplete draw/read buffers)");
2341       return;
2342    }
2343
2344    if (filter != GL_NEAREST && filter != GL_LINEAR) {
2345       _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)");
2346       return;
2347    }
2348
2349    if (mask & ~legalMaskBits) {
2350       _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)");
2351       return;
2352    }
2353
2354    /* depth/stencil must be blitted with nearest filtering */
2355    if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))
2356         && filter != GL_NEAREST) {
2357       _mesa_error(ctx, GL_INVALID_OPERATION,
2358              "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
2359       return;
2360    }
2361
2362    /* get color read/draw renderbuffers */
2363    if (mask & GL_COLOR_BUFFER_BIT) {
2364       colorReadRb = readFb->_ColorReadBuffer;
2365       colorDrawRb = drawFb->_ColorDrawBuffers[0];
2366    }
2367    else {
2368       colorReadRb = colorDrawRb = NULL;
2369    }
2370
2371    if (mask & GL_STENCIL_BUFFER_BIT) {
2372       struct gl_renderbuffer *readRb = readFb->_StencilBuffer;
2373       struct gl_renderbuffer *drawRb = drawFb->_StencilBuffer;
2374       if (!readRb ||
2375           !drawRb ||
2376           _mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) !=
2377           _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) {
2378          _mesa_error(ctx, GL_INVALID_OPERATION,
2379                      "glBlitFramebufferEXT(stencil buffer size mismatch)");
2380          return;
2381       }
2382    }
2383
2384    if (mask & GL_DEPTH_BUFFER_BIT) {
2385       struct gl_renderbuffer *readRb = readFb->_DepthBuffer;
2386       struct gl_renderbuffer *drawRb = drawFb->_DepthBuffer;
2387       if (!readRb ||
2388           !drawRb ||
2389           _mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) !=
2390           _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) {
2391          _mesa_error(ctx, GL_INVALID_OPERATION,
2392                      "glBlitFramebufferEXT(depth buffer size mismatch)");
2393          return;
2394       }
2395    }
2396
2397    if (readFb->Visual.samples > 0 &&
2398        drawFb->Visual.samples > 0 &&
2399        readFb->Visual.samples != drawFb->Visual.samples) {
2400       _mesa_error(ctx, GL_INVALID_OPERATION,
2401                   "glBlitFramebufferEXT(mismatched samples");
2402       return;
2403    }
2404
2405    /* extra checks for multisample copies... */
2406    if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) {
2407       /* src and dest region sizes must be the same */
2408       if (srcX1 - srcX0 != dstX1 - dstX0 ||
2409           srcY1 - srcY0 != dstY1 - dstY0) {
2410          _mesa_error(ctx, GL_INVALID_OPERATION,
2411                 "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
2412          return;
2413       }
2414
2415       /* color formats must match */
2416       if (colorReadRb &&
2417           colorDrawRb &&
2418           colorReadRb->Format != colorDrawRb->Format) {
2419          _mesa_error(ctx, GL_INVALID_OPERATION,
2420                 "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
2421          return;
2422       }
2423    }
2424
2425    if (!ctx->Extensions.EXT_framebuffer_blit) {
2426       _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT");
2427       return;
2428    }
2429
2430    /* Debug code */
2431    if (DEBUG_BLIT) {
2432       printf("glBlitFramebuffer(%d, %d, %d, %d,  %d, %d, %d, %d,"
2433              " 0x%x, 0x%x)\n",
2434              srcX0, srcY0, srcX1, srcY1,
2435              dstX0, dstY0, dstX1, dstY1,
2436              mask, filter);
2437       if (colorReadRb) {
2438          const struct gl_renderbuffer_attachment *att;
2439
2440          att = find_attachment(readFb, colorReadRb);
2441          printf("  Src FBO %u  RB %u (%dx%d)  ",
2442                 readFb->Name, colorReadRb->Name,
2443                 colorReadRb->Width, colorReadRb->Height);
2444          if (att && att->Texture) {
2445             printf("Tex %u  tgt 0x%x  level %u  face %u",
2446                    att->Texture->Name,
2447                    att->Texture->Target,
2448                    att->TextureLevel,
2449                    att->CubeMapFace);
2450          }
2451          printf("\n");
2452
2453          att = find_attachment(drawFb, colorDrawRb);
2454          printf("  Dst FBO %u  RB %u (%dx%d)  ",
2455                 drawFb->Name, colorDrawRb->Name,
2456                 colorDrawRb->Width, colorDrawRb->Height);
2457          if (att && att->Texture) {
2458             printf("Tex %u  tgt 0x%x  level %u  face %u",
2459                    att->Texture->Name,
2460                    att->Texture->Target,
2461                    att->TextureLevel,
2462                    att->CubeMapFace);
2463          }
2464          printf("\n");
2465       }
2466    }
2467
2468    ASSERT(ctx->Driver.BlitFramebuffer);
2469    ctx->Driver.BlitFramebuffer(ctx,
2470                                srcX0, srcY0, srcX1, srcY1,
2471                                dstX0, dstY0, dstX1, dstY1,
2472                                mask, filter);
2473 }
2474 #endif /* FEATURE_EXT_framebuffer_blit */
2475
2476 #if FEATURE_ARB_geometry_shader4
2477 void GLAPIENTRY
2478 _mesa_FramebufferTextureARB(GLenum target, GLenum attachment,
2479                             GLuint texture, GLint level)
2480 {
2481    GET_CURRENT_CONTEXT(ctx);
2482    _mesa_error(ctx, GL_INVALID_OPERATION,
2483                "glFramebufferTextureARB "
2484                "not implemented!");
2485 }
2486
2487 void GLAPIENTRY
2488 _mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment,
2489                                 GLuint texture, GLint level, GLenum face)
2490 {
2491    GET_CURRENT_CONTEXT(ctx);
2492    _mesa_error(ctx, GL_INVALID_OPERATION,
2493                "glFramebufferTextureFaceARB "
2494                "not implemented!");
2495 }
2496 #endif /* FEATURE_ARB_geometry_shader4 */