src/mesa/drivers/dri/radeon/radeon_fbo.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Red Hat Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * 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
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "main/imports.h"
  30 #include "main/macros.h"
  31 #include "main/mtypes.h"
  32 #include "main/fbobject.h"
  33 #include "main/framebuffer.h"
  34 #include "main/renderbuffer.h"
  35 #include "main/context.h"
  36 #include "main/texformat.h"
  37 #include "main/texrender.h"
  38 #include "drivers/common/meta.h"
  39
  40 #include "radeon_common.h"
  41 #include "radeon_mipmap_tree.h"
  42
  43 #define FILE_DEBUG_FLAG RADEON_TEXTURE
  44 #define DBG(...) do {                                           \
  45         if (RADEON_DEBUG & FILE_DEBUG_FLAG)                      \
  46                 _mesa_printf(__VA_ARGS__);                      \
  47 } while(0)
  48
  49 static struct gl_framebuffer *
  50 radeon_new_framebuffer(GLcontext *ctx, GLuint name)
  51 {
  52   return _mesa_new_framebuffer(ctx, name);
  53 }
  54
  55 static void
  56 radeon_delete_renderbuffer(struct gl_renderbuffer *rb)
  57 {
  58   struct radeon_renderbuffer *rrb = radeon_renderbuffer(rb);
  59
  60   ASSERT(rrb);
  61
  62   if (rrb && rrb->bo) {
  63     radeon_bo_unref(rrb->bo);
  64   }
  65   _mesa_free(rrb);
  66 }
  67
  68 static void *
  69 radeon_get_pointer(GLcontext *ctx, struct gl_renderbuffer *rb,
  70                    GLint x, GLint y)
  71 {
  72   return NULL;
  73 }
  74
  75 /**
  76  * Called via glRenderbufferStorageEXT() to set the format and allocate
  77  * storage for a user-created renderbuffer.
  78  */
  79 static GLboolean
  80 radeon_alloc_renderbuffer_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
  81                                  GLenum internalFormat,
  82                                  GLuint width, GLuint height)
  83 {
  84   struct radeon_context *radeon = RADEON_CONTEXT(ctx);
  85   struct radeon_renderbuffer *rrb = radeon_renderbuffer(rb);
  86   GLboolean software_buffer = GL_FALSE;
  87   int cpp;
  88
  89    ASSERT(rb->Name != 0);
  90   switch (internalFormat) {
  91    case GL_R3_G3_B2:
  92    case GL_RGB4:
  93    case GL_RGB5:
  94       rb->_ActualFormat = GL_RGB5;
  95       rb->DataType = GL_UNSIGNED_BYTE;
  96       rb->RedBits = 5;
  97       rb->GreenBits = 6;
  98       rb->BlueBits = 5;
  99       cpp = 2;
 100       break;
 101    case GL_RGB:
 102    case GL_RGB8:
 103    case GL_RGB10:
 104    case GL_RGB12:
 105    case GL_RGB16:
 106       rb->_ActualFormat = GL_RGB8;
 107       rb->DataType = GL_UNSIGNED_BYTE;
 108       rb->RedBits = 8;
 109       rb->GreenBits = 8;
 110       rb->BlueBits = 8;
 111       rb->AlphaBits = 0;
 112       cpp = 4;
 113       break;
 114    case GL_RGBA:
 115    case GL_RGBA2:
 116    case GL_RGBA4:
 117    case GL_RGB5_A1:
 118    case GL_RGBA8:
 119    case GL_RGB10_A2:
 120    case GL_RGBA12:
 121    case GL_RGBA16:
 122       rb->_ActualFormat = GL_RGBA8;
 123       rb->DataType = GL_UNSIGNED_BYTE;
 124       rb->RedBits = 8;
 125       rb->GreenBits = 8;
 126       rb->BlueBits = 8;
 127       rb->AlphaBits = 8;
 128       cpp = 4;
 129       break;
 130    case GL_STENCIL_INDEX:
 131    case GL_STENCIL_INDEX1_EXT:
 132    case GL_STENCIL_INDEX4_EXT:
 133    case GL_STENCIL_INDEX8_EXT:
 134    case GL_STENCIL_INDEX16_EXT:
 135       /* alloc a depth+stencil buffer */
 136       rb->_ActualFormat = GL_DEPTH24_STENCIL8_EXT;
 137       rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
 138       rb->StencilBits = 8;
 139       cpp = 4;
 140       break;
 141    case GL_DEPTH_COMPONENT16:
 142       rb->_ActualFormat = GL_DEPTH_COMPONENT16;
 143       rb->DataType = GL_UNSIGNED_SHORT;
 144       rb->DepthBits = 16;
 145       cpp = 2;
 146       break;
 147    case GL_DEPTH_COMPONENT:
 148    case GL_DEPTH_COMPONENT24:
 149    case GL_DEPTH_COMPONENT32:
 150       rb->_ActualFormat = GL_DEPTH_COMPONENT24;
 151       rb->DataType = GL_UNSIGNED_INT;
 152       rb->DepthBits = 24;
 153       cpp = 4;
 154       break;
 155    case GL_DEPTH_STENCIL_EXT:
 156    case GL_DEPTH24_STENCIL8_EXT:
 157       rb->_ActualFormat = GL_DEPTH24_STENCIL8_EXT;
 158       rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
 159       rb->DepthBits = 24;
 160       rb->StencilBits = 8;
 161       cpp = 4;
 162       break;
 163    default:
 164       _mesa_problem(ctx,
 165                     "Unexpected format in intel_alloc_renderbuffer_storage");
 166       return GL_FALSE;
 167    }
 168
 169   if (ctx->Driver.Flush)
 170           ctx->Driver.Flush(ctx); /* +r6/r7 */
 171
 172   if (rrb->bo)
 173     radeon_bo_unref(rrb->bo);
 174
 175
 176    if (software_buffer) {
 177       return _mesa_soft_renderbuffer_storage(ctx, rb, internalFormat,
 178                                              width, height);
 179    }
 180    else {
 181      uint32_t size;
 182      uint32_t pitch = ((cpp * width + 63) & ~63) / cpp;
 183
 184      fprintf(stderr,"Allocating %d x %d radeon RBO (pitch %d)\n", width,
 185           height, pitch);
 186
 187      size = pitch * height * cpp;
 188      rrb->pitch = pitch * cpp;
 189      rrb->cpp = cpp;
 190      rrb->bo = radeon_bo_open(radeon->radeonScreen->bom,
 191                               0,
 192                               size,
 193                               0,
 194                               RADEON_GEM_DOMAIN_VRAM,
 195                               0);
 196      rb->Width = width;
 197      rb->Height = height;
 198        return GL_TRUE;
 199    }
 200
 201 }
 202
 203
 204 /**
 205  * Called for each hardware renderbuffer when a _window_ is resized.
 206  * Just update fields.
 207  * Not used for user-created renderbuffers!
 208  */
 209 static GLboolean
 210 radeon_alloc_window_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
 211                            GLenum internalFormat, GLuint width, GLuint height)
 212 {
 213    ASSERT(rb->Name == 0);
 214    rb->Width = width;
 215    rb->Height = height;
 216    rb->_ActualFormat = internalFormat;
 217
 218    return GL_TRUE;
 219 }
 220
 221
 222 static void
 223 radeon_resize_buffers(GLcontext *ctx, struct gl_framebuffer *fb,
 224                      GLuint width, GLuint height)
 225 {
 226      struct radeon_framebuffer *radeon_fb = (struct radeon_framebuffer*)fb;
 227    int i;
 228
 229    _mesa_resize_framebuffer(ctx, fb, width, height);
 230
 231    fb->Initialized = GL_TRUE; /* XXX remove someday */
 232
 233    if (fb->Name != 0) {
 234       return;
 235    }
 236
 237    /* Make sure all window system renderbuffers are up to date */
 238    for (i = 0; i < 2; i++) {
 239       struct gl_renderbuffer *rb = &radeon_fb->color_rb[i]->base;
 240
 241       /* only resize if size is changing */
 242       if (rb && (rb->Width != width || rb->Height != height)) {
 243          rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height);
 244       }
 245    }
 246 }
 247
 248
 249 /** Dummy function for gl_renderbuffer::AllocStorage() */
 250 static GLboolean
 251 radeon_nop_alloc_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
 252                          GLenum internalFormat, GLuint width, GLuint height)
 253 {
 254    _mesa_problem(ctx, "radeon_op_alloc_storage should never be called.");
 255    return GL_FALSE;
 256 }
 257
 258 struct radeon_renderbuffer *
 259 radeon_create_renderbuffer(GLenum format, __DRIdrawablePrivate *driDrawPriv)
 260 {
 261     struct radeon_renderbuffer *rrb;
 262
 263     rrb = CALLOC_STRUCT(radeon_renderbuffer);
 264     if (!rrb)
 265         return NULL;
 266
 267     _mesa_init_renderbuffer(&rrb->base, 0);
 268     rrb->base.ClassID = RADEON_RB_CLASS;
 269
 270     /* XXX format junk */
 271     switch (format) {
 272         case GL_RGB5:
 273             rrb->base._ActualFormat = GL_RGB5;
 274             rrb->base._BaseFormat = GL_RGBA;
 275             rrb->base.RedBits = 5;
 276             rrb->base.GreenBits = 6;
 277             rrb->base.BlueBits = 5;
 278             rrb->base.DataType = GL_UNSIGNED_BYTE;
 279             break;
 280         case GL_RGB8:
 281             rrb->base._ActualFormat = GL_RGB8;
 282             rrb->base._BaseFormat = GL_RGB;
 283             rrb->base.RedBits = 8;
 284             rrb->base.GreenBits = 8;
 285             rrb->base.BlueBits = 8;
 286             rrb->base.AlphaBits = 0;
 287             rrb->base.DataType = GL_UNSIGNED_BYTE;
 288             break;
 289         case GL_RGBA8:
 290             rrb->base._ActualFormat = GL_RGBA8;
 291             rrb->base._BaseFormat = GL_RGBA;
 292             rrb->base.RedBits = 8;
 293             rrb->base.GreenBits = 8;
 294             rrb->base.BlueBits = 8;
 295             rrb->base.AlphaBits = 8;
 296             rrb->base.DataType = GL_UNSIGNED_BYTE;
 297             break;
 298         case GL_STENCIL_INDEX8_EXT:
 299             rrb->base._ActualFormat = GL_STENCIL_INDEX8_EXT;
 300             rrb->base._BaseFormat = GL_STENCIL_INDEX;
 301             rrb->base.StencilBits = 8;
 302             rrb->base.DataType = GL_UNSIGNED_BYTE;
 303             break;
 304         case GL_DEPTH_COMPONENT16:
 305             rrb->base._ActualFormat = GL_DEPTH_COMPONENT16;
 306             rrb->base._BaseFormat = GL_DEPTH_COMPONENT;
 307             rrb->base.DepthBits = 16;
 308             rrb->base.DataType = GL_UNSIGNED_SHORT;
 309             break;
 310         case GL_DEPTH_COMPONENT24:
 311             rrb->base._ActualFormat = GL_DEPTH_COMPONENT24;
 312             rrb->base._BaseFormat = GL_DEPTH_COMPONENT;
 313             rrb->base.DepthBits = 24;
 314             rrb->base.DataType = GL_UNSIGNED_INT;
 315             break;
 316         case GL_DEPTH24_STENCIL8_EXT:
 317             rrb->base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
 318             rrb->base._BaseFormat = GL_DEPTH_STENCIL_EXT;
 319             rrb->base.DepthBits = 24;
 320             rrb->base.StencilBits = 8;
 321             rrb->base.DataType = GL_UNSIGNED_INT_24_8_EXT;
 322             break;
 323         default:
 324             fprintf(stderr, "%s: Unknown format 0x%04x\n", __FUNCTION__, format);
 325             _mesa_delete_renderbuffer(&rrb->base);
 326             return NULL;
 327     }
 328
 329     rrb->dPriv = driDrawPriv;
 330     rrb->base.InternalFormat = format;
 331
 332     rrb->base.Delete = radeon_delete_renderbuffer;
 333     rrb->base.AllocStorage = radeon_alloc_window_storage;
 334     rrb->base.GetPointer = radeon_get_pointer;
 335
 336     rrb->bo = NULL;
 337     return rrb;
 338 }
 339
 340 static struct gl_renderbuffer *
 341 radeon_new_renderbuffer(GLcontext * ctx, GLuint name)
 342 {
 343   struct radeon_renderbuffer *rrb;
 344
 345   rrb = CALLOC_STRUCT(radeon_renderbuffer);
 346   if (!rrb)
 347     return NULL;
 348
 349   _mesa_init_renderbuffer(&rrb->base, name);
 350   rrb->base.ClassID = RADEON_RB_CLASS;
 351
 352   rrb->base.Delete = radeon_delete_renderbuffer;
 353   rrb->base.AllocStorage = radeon_alloc_renderbuffer_storage;
 354   rrb->base.GetPointer = radeon_get_pointer;
 355
 356   return &rrb->base;
 357 }
 358
 359 static void
 360 radeon_bind_framebuffer(GLcontext * ctx, GLenum target,
 361                        struct gl_framebuffer *fb, struct gl_framebuffer *fbread)
 362 {
 363    if (target == GL_FRAMEBUFFER_EXT || target == GL_DRAW_FRAMEBUFFER_EXT) {
 364       radeon_draw_buffer(ctx, fb);
 365    }
 366    else {
 367       /* don't need to do anything if target == GL_READ_FRAMEBUFFER_EXT */
 368    }
 369 }
 370
 371 static void
 372 radeon_framebuffer_renderbuffer(GLcontext * ctx,
 373                                struct gl_framebuffer *fb,
 374                                GLenum attachment, struct gl_renderbuffer *rb)
 375 {
 376
 377         if (ctx->Driver.Flush)
 378                 ctx->Driver.Flush(ctx); /* +r6/r7 */
 379
 380    _mesa_framebuffer_renderbuffer(ctx, fb, attachment, rb);
 381    radeon_draw_buffer(ctx, fb);
 382 }
 383
 384
 385 static GLboolean
 386 radeon_update_wrapper(GLcontext *ctx, struct radeon_renderbuffer *rrb,
 387                      struct gl_texture_image *texImage)
 388 {
 389         int retry = 0;
 390         gl_format texFormat;
 391
 392 restart:
 393         if (texImage->TexFormat == &_mesa_texformat_argb8888) {
 394                 rrb->cpp = 4;
 395                 rrb->base._ActualFormat = GL_RGBA8;
 396                 rrb->base._BaseFormat = GL_RGBA;
 397                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 398                 DBG("Render to RGBA8 texture OK\n");
 399         }
 400         else if (texImage->TexFormat == &_mesa_texformat_rgb565) {
 401                 rrb->cpp = 2;
 402                 rrb->base._ActualFormat = GL_RGB5;
 403                 rrb->base._BaseFormat = GL_RGB;
 404                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 405                 DBG("Render to RGB5 texture OK\n");
 406         }
 407         else if (texImage->TexFormat == &_mesa_texformat_argb1555) {
 408                 rrb->cpp = 2;
 409                 rrb->base._ActualFormat = GL_RGB5_A1;
 410                 rrb->base._BaseFormat = GL_RGBA;
 411                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 412                 DBG("Render to ARGB1555 texture OK\n");
 413         }
 414         else if (texImage->TexFormat == &_mesa_texformat_argb4444) {
 415                 rrb->cpp = 2;
 416                 rrb->base._ActualFormat = GL_RGBA4;
 417                 rrb->base._BaseFormat = GL_RGBA;
 418                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 419                 DBG("Render to ARGB1555 texture OK\n");
 420         }
 421         else if (texImage->TexFormat == &_mesa_texformat_z16) {
 422                 rrb->cpp = 2;
 423                 rrb->base._ActualFormat = GL_DEPTH_COMPONENT16;
 424                 rrb->base._BaseFormat = GL_DEPTH_COMPONENT;
 425                 rrb->base.DataType = GL_UNSIGNED_SHORT;
 426                 DBG("Render to DEPTH16 texture OK\n");
 427         }
 428         else if (texImage->TexFormat == &_mesa_texformat_s8_z24) {
 429                 rrb->cpp = 4;
 430                 rrb->base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
 431                 rrb->base._BaseFormat = GL_DEPTH_STENCIL_EXT;
 432                 rrb->base.DataType = GL_UNSIGNED_INT_24_8_EXT;
 433                 DBG("Render to DEPTH_STENCIL texture OK\n");
 434         }
 435         else {
 436                 /* try redoing the FBO */
 437                 if (retry == 1) {
 438                         DBG("Render to texture BAD FORMAT %d\n",
 439                             texImage->TexFormat->MesaFormat);
 440                         return GL_FALSE;
 441                 }
 442                 texImage->TexFormat = radeonChooseTextureFormat(ctx, texImage->InternalFormat, 0,
 443                                                                 _mesa_get_format_datatype(texImage->TexFormat->MesaFormat),
 444                                                                 1);
 445
 446                 retry++;
 447                 goto restart;
 448         }
 449
 450         texFormat = texImage->TexFormat->MesaFormat;
 451
 452         rrb->pitch = texImage->Width * rrb->cpp;
 453         rrb->base.InternalFormat = rrb->base._ActualFormat;
 454         rrb->base.Width = texImage->Width;
 455         rrb->base.Height = texImage->Height;
 456         rrb->Base.RedBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE);
 457         rrb->Base.GreenBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE);
 458         rrb->Base.BlueBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_BLUE_SIZE);
 459         rrb->Base.AlphaBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_ALPHA_SIZE);
 460         rrb->Base.DepthBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_DEPTH_SIZE_ARB);
 461         rrb->Base.StencilBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_STENCIL_SIZE_EXT);
 462         rrb->base.Delete = radeon_delete_renderbuffer;
 463         rrb->base.AllocStorage = radeon_nop_alloc_storage;
 464
 465         return GL_TRUE;
 466 }
 467
 468
 469 static struct radeon_renderbuffer *
 470 radeon_wrap_texture(GLcontext * ctx, struct gl_texture_image *texImage)
 471 {
 472   const GLuint name = ~0;   /* not significant, but distinct for debugging */
 473   struct radeon_renderbuffer *rrb;
 474
 475    /* make an radeon_renderbuffer to wrap the texture image */
 476    rrb = CALLOC_STRUCT(radeon_renderbuffer);
 477    if (!rrb) {
 478       _mesa_error(ctx, GL_OUT_OF_MEMORY, "glFramebufferTexture");
 479       return NULL;
 480    }
 481
 482    _mesa_init_renderbuffer(&rrb->base, name);
 483    rrb->base.ClassID = RADEON_RB_CLASS;
 484
 485    if (!radeon_update_wrapper(ctx, rrb, texImage)) {
 486       _mesa_free(rrb);
 487       return NULL;
 488    }
 489
 490    return rrb;
 491
 492 }
 493 static void
 494 radeon_render_texture(GLcontext * ctx,
 495                      struct gl_framebuffer *fb,
 496                      struct gl_renderbuffer_attachment *att)
 497 {
 498    struct gl_texture_image *newImage
 499       = att->Texture->Image[att->CubeMapFace][att->TextureLevel];
 500    struct radeon_renderbuffer *rrb = radeon_renderbuffer(att->Renderbuffer);
 501    radeon_texture_image *radeon_image;
 502    GLuint imageOffset;
 503
 504    (void) fb;
 505
 506    ASSERT(newImage);
 507
 508    if (newImage->Border != 0) {
 509       /* Fallback on drawing to a texture with a border, which won't have a
 510        * miptree.
 511        */
 512       _mesa_reference_renderbuffer(&att->Renderbuffer, NULL);
 513       _mesa_render_texture(ctx, fb, att);
 514       return;
 515    }
 516    else if (!rrb) {
 517       rrb = radeon_wrap_texture(ctx, newImage);
 518       if (rrb) {
 519          /* bind the wrapper to the attachment point */
 520          _mesa_reference_renderbuffer(&att->Renderbuffer, &rrb->base);
 521       }
 522       else {
 523          /* fallback to software rendering */
 524          _mesa_render_texture(ctx, fb, att);
 525          return;
 526       }
 527    }
 528
 529    if (!radeon_update_wrapper(ctx, rrb, newImage)) {
 530        _mesa_reference_renderbuffer(&att->Renderbuffer, NULL);
 531        _mesa_render_texture(ctx, fb, att);
 532        return;
 533    }
 534
 535    DBG("Begin render texture tid %x tex=%u w=%d h=%d refcount=%d\n",
 536        _glthread_GetID(),
 537        att->Texture->Name, newImage->Width, newImage->Height,
 538        rrb->base.RefCount);
 539
 540    /* point the renderbufer's region to the texture image region */
 541    radeon_image = (radeon_texture_image *)newImage;
 542    if (rrb->bo != radeon_image->mt->bo) {
 543       if (rrb->bo)
 544         radeon_bo_unref(rrb->bo);
 545       rrb->bo = radeon_image->mt->bo;
 546       radeon_bo_ref(rrb->bo);
 547    }
 548
 549    /* compute offset of the particular 2D image within the texture region */
 550    imageOffset = radeon_miptree_image_offset(radeon_image->mt,
 551                                             att->CubeMapFace,
 552                                             att->TextureLevel);
 553
 554    if (att->Texture->Target == GL_TEXTURE_3D) {
 555       GLuint offsets[6];
 556       radeon_miptree_depth_offsets(radeon_image->mt, att->TextureLevel,
 557                                    offsets);
 558       imageOffset += offsets[att->Zoffset];
 559    }
 560
 561    /* store that offset in the region */
 562    rrb->draw_offset = imageOffset;
 563
 564    /* update drawing region, etc */
 565    radeon_draw_buffer(ctx, fb);
 566 }
 567
 568 static void
 569 radeon_finish_render_texture(GLcontext * ctx,
 570                             struct gl_renderbuffer_attachment *att)
 571 {
 572
 573 }
 574 static void
 575 radeon_validate_framebuffer(GLcontext *ctx, struct gl_framebuffer *fb)
 576 {
 577 }
 578
 579 void radeon_fbo_init(struct radeon_context *radeon)
 580 {
 581   radeon->glCtx->Driver.NewFramebuffer = radeon_new_framebuffer;
 582   radeon->glCtx->Driver.NewRenderbuffer = radeon_new_renderbuffer;
 583   radeon->glCtx->Driver.BindFramebuffer = radeon_bind_framebuffer;
 584   radeon->glCtx->Driver.FramebufferRenderbuffer = radeon_framebuffer_renderbuffer;
 585   radeon->glCtx->Driver.RenderTexture = radeon_render_texture;
 586   radeon->glCtx->Driver.FinishRenderTexture = radeon_finish_render_texture;
 587   radeon->glCtx->Driver.ResizeBuffers = radeon_resize_buffers;
 588   radeon->glCtx->Driver.ValidateFramebuffer = radeon_validate_framebuffer;
 589   radeon->glCtx->Driver.BlitFramebuffer = _mesa_meta_BlitFramebuffer;
 590 }
 591
 592
 593 void radeon_renderbuffer_set_bo(struct radeon_renderbuffer *rb,
 594                                 struct radeon_bo *bo)
 595 {
 596   struct radeon_bo *old;
 597   old = rb->bo;
 598   rb->bo = bo;
 599   radeon_bo_ref(bo);
 600   if (old)
 601     radeon_bo_unref(old);
 602 }