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/texrender.h"
  37 #include "drivers/common/meta.h"
  38
  39 #include "radeon_common.h"
  40 #include "radeon_mipmap_tree.h"
  41
  42 #define FILE_DEBUG_FLAG RADEON_TEXTURE
  43 #define DBG(...) do {                                           \
  44         if (RADEON_DEBUG & FILE_DEBUG_FLAG)                      \
  45                 _mesa_printf(__VA_ARGS__);                      \
  46 } while(0)
  47
  48 static struct gl_framebuffer *
  49 radeon_new_framebuffer(GLcontext *ctx, GLuint name)
  50 {
  51   return _mesa_new_framebuffer(ctx, name);
  52 }
  53
  54 static void
  55 radeon_delete_renderbuffer(struct gl_renderbuffer *rb)
  56 {
  57   struct radeon_renderbuffer *rrb = radeon_renderbuffer(rb);
  58
  59   ASSERT(rrb);
  60
  61   if (rrb && rrb->bo) {
  62     radeon_bo_unref(rrb->bo);
  63   }
  64   _mesa_free(rrb);
  65 }
  66
  67 static void *
  68 radeon_get_pointer(GLcontext *ctx, struct gl_renderbuffer *rb,
  69                    GLint x, GLint y)
  70 {
  71   return NULL;
  72 }
  73
  74 /**
  75  * Called via glRenderbufferStorageEXT() to set the format and allocate
  76  * storage for a user-created renderbuffer.
  77  */
  78 static GLboolean
  79 radeon_alloc_renderbuffer_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
  80                                  GLenum internalFormat,
  81                                  GLuint width, GLuint height)
  82 {
  83   struct radeon_context *radeon = RADEON_CONTEXT(ctx);
  84   struct radeon_renderbuffer *rrb = radeon_renderbuffer(rb);
  85   GLboolean software_buffer = GL_FALSE;
  86   int cpp;
  87
  88    ASSERT(rb->Name != 0);
  89   switch (internalFormat) {
  90    case GL_R3_G3_B2:
  91    case GL_RGB4:
  92    case GL_RGB5:
  93       rb->_ActualFormat = GL_RGB5;
  94       rb->DataType = GL_UNSIGNED_BYTE;
  95       rb->RedBits = 5;
  96       rb->GreenBits = 6;
  97       rb->BlueBits = 5;
  98       cpp = 2;
  99       break;
 100    case GL_RGB:
 101    case GL_RGB8:
 102    case GL_RGB10:
 103    case GL_RGB12:
 104    case GL_RGB16:
 105       rb->_ActualFormat = GL_RGB8;
 106       rb->DataType = GL_UNSIGNED_BYTE;
 107       rb->RedBits = 8;
 108       rb->GreenBits = 8;
 109       rb->BlueBits = 8;
 110       rb->AlphaBits = 0;
 111       cpp = 4;
 112       break;
 113    case GL_RGBA:
 114    case GL_RGBA2:
 115    case GL_RGBA4:
 116    case GL_RGB5_A1:
 117    case GL_RGBA8:
 118    case GL_RGB10_A2:
 119    case GL_RGBA12:
 120    case GL_RGBA16:
 121       rb->_ActualFormat = GL_RGBA8;
 122       rb->DataType = GL_UNSIGNED_BYTE;
 123       rb->RedBits = 8;
 124       rb->GreenBits = 8;
 125       rb->BlueBits = 8;
 126       rb->AlphaBits = 8;
 127       cpp = 4;
 128       break;
 129    case GL_STENCIL_INDEX:
 130    case GL_STENCIL_INDEX1_EXT:
 131    case GL_STENCIL_INDEX4_EXT:
 132    case GL_STENCIL_INDEX8_EXT:
 133    case GL_STENCIL_INDEX16_EXT:
 134       /* alloc a depth+stencil buffer */
 135       rb->_ActualFormat = GL_DEPTH24_STENCIL8_EXT;
 136       rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
 137       rb->StencilBits = 8;
 138       cpp = 4;
 139       break;
 140    case GL_DEPTH_COMPONENT16:
 141       rb->_ActualFormat = GL_DEPTH_COMPONENT16;
 142       rb->DataType = GL_UNSIGNED_SHORT;
 143       rb->DepthBits = 16;
 144       cpp = 2;
 145       break;
 146    case GL_DEPTH_COMPONENT:
 147    case GL_DEPTH_COMPONENT24:
 148    case GL_DEPTH_COMPONENT32:
 149       rb->_ActualFormat = GL_DEPTH_COMPONENT24;
 150       rb->DataType = GL_UNSIGNED_INT;
 151       rb->DepthBits = 24;
 152       cpp = 4;
 153       break;
 154    case GL_DEPTH_STENCIL_EXT:
 155    case GL_DEPTH24_STENCIL8_EXT:
 156       rb->_ActualFormat = GL_DEPTH24_STENCIL8_EXT;
 157       rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
 158       rb->DepthBits = 24;
 159       rb->StencilBits = 8;
 160       cpp = 4;
 161       break;
 162    default:
 163       _mesa_problem(ctx,
 164                     "Unexpected format in intel_alloc_renderbuffer_storage");
 165       return GL_FALSE;
 166    }
 167
 168   if (ctx->Driver.Flush)
 169           ctx->Driver.Flush(ctx); /* +r6/r7 */
 170
 171   if (rrb->bo)
 172     radeon_bo_unref(rrb->bo);
 173
 174
 175    if (software_buffer) {
 176       return _mesa_soft_renderbuffer_storage(ctx, rb, internalFormat,
 177                                              width, height);
 178    }
 179    else {
 180      uint32_t size;
 181      uint32_t pitch = ((cpp * width + 63) & ~63) / cpp;
 182
 183      fprintf(stderr,"Allocating %d x %d radeon RBO (pitch %d)\n", width,
 184           height, pitch);
 185
 186      size = pitch * height * cpp;
 187      rrb->pitch = pitch * cpp;
 188      rrb->cpp = cpp;
 189      rrb->bo = radeon_bo_open(radeon->radeonScreen->bom,
 190                               0,
 191                               size,
 192                               0,
 193                               RADEON_GEM_DOMAIN_VRAM,
 194                               0);
 195      rb->Width = width;
 196      rb->Height = height;
 197        return GL_TRUE;
 198    }
 199
 200 }
 201
 202
 203 /**
 204  * Called for each hardware renderbuffer when a _window_ is resized.
 205  * Just update fields.
 206  * Not used for user-created renderbuffers!
 207  */
 208 static GLboolean
 209 radeon_alloc_window_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
 210                            GLenum internalFormat, GLuint width, GLuint height)
 211 {
 212    ASSERT(rb->Name == 0);
 213    rb->Width = width;
 214    rb->Height = height;
 215    rb->_ActualFormat = internalFormat;
 216
 217    return GL_TRUE;
 218 }
 219
 220
 221 static void
 222 radeon_resize_buffers(GLcontext *ctx, struct gl_framebuffer *fb,
 223                      GLuint width, GLuint height)
 224 {
 225      struct radeon_framebuffer *radeon_fb = (struct radeon_framebuffer*)fb;
 226    int i;
 227
 228    _mesa_resize_framebuffer(ctx, fb, width, height);
 229
 230    fb->Initialized = GL_TRUE; /* XXX remove someday */
 231
 232    if (fb->Name != 0) {
 233       return;
 234    }
 235
 236    /* Make sure all window system renderbuffers are up to date */
 237    for (i = 0; i < 2; i++) {
 238       struct gl_renderbuffer *rb = &radeon_fb->color_rb[i]->base;
 239
 240       /* only resize if size is changing */
 241       if (rb && (rb->Width != width || rb->Height != height)) {
 242          rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height);
 243       }
 244    }
 245 }
 246
 247
 248 /** Dummy function for gl_renderbuffer::AllocStorage() */
 249 static GLboolean
 250 radeon_nop_alloc_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
 251                          GLenum internalFormat, GLuint width, GLuint height)
 252 {
 253    _mesa_problem(ctx, "radeon_op_alloc_storage should never be called.");
 254    return GL_FALSE;
 255 }
 256
 257 struct radeon_renderbuffer *
 258 radeon_create_renderbuffer(GLenum format, __DRIdrawablePrivate *driDrawPriv)
 259 {
 260     struct radeon_renderbuffer *rrb;
 261
 262     rrb = CALLOC_STRUCT(radeon_renderbuffer);
 263     if (!rrb)
 264         return NULL;
 265
 266     _mesa_init_renderbuffer(&rrb->base, 0);
 267     rrb->base.ClassID = RADEON_RB_CLASS;
 268
 269     /* XXX format junk */
 270     switch (format) {
 271         case GL_RGB5:
 272             rrb->base._ActualFormat = GL_RGB5;
 273             rrb->base._BaseFormat = GL_RGBA;
 274             rrb->base.RedBits = 5;
 275             rrb->base.GreenBits = 6;
 276             rrb->base.BlueBits = 5;
 277             rrb->base.DataType = GL_UNSIGNED_BYTE;
 278             break;
 279         case GL_RGB8:
 280             rrb->base._ActualFormat = GL_RGB8;
 281             rrb->base._BaseFormat = GL_RGB;
 282             rrb->base.RedBits = 8;
 283             rrb->base.GreenBits = 8;
 284             rrb->base.BlueBits = 8;
 285             rrb->base.AlphaBits = 0;
 286             rrb->base.DataType = GL_UNSIGNED_BYTE;
 287             break;
 288         case GL_RGBA8:
 289             rrb->base._ActualFormat = GL_RGBA8;
 290             rrb->base._BaseFormat = GL_RGBA;
 291             rrb->base.RedBits = 8;
 292             rrb->base.GreenBits = 8;
 293             rrb->base.BlueBits = 8;
 294             rrb->base.AlphaBits = 8;
 295             rrb->base.DataType = GL_UNSIGNED_BYTE;
 296             break;
 297         case GL_STENCIL_INDEX8_EXT:
 298             rrb->base._ActualFormat = GL_STENCIL_INDEX8_EXT;
 299             rrb->base._BaseFormat = GL_STENCIL_INDEX;
 300             rrb->base.StencilBits = 8;
 301             rrb->base.DataType = GL_UNSIGNED_BYTE;
 302             break;
 303         case GL_DEPTH_COMPONENT16:
 304             rrb->base._ActualFormat = GL_DEPTH_COMPONENT16;
 305             rrb->base._BaseFormat = GL_DEPTH_COMPONENT;
 306             rrb->base.DepthBits = 16;
 307             rrb->base.DataType = GL_UNSIGNED_SHORT;
 308             break;
 309         case GL_DEPTH_COMPONENT24:
 310             rrb->base._ActualFormat = GL_DEPTH_COMPONENT24;
 311             rrb->base._BaseFormat = GL_DEPTH_COMPONENT;
 312             rrb->base.DepthBits = 24;
 313             rrb->base.DataType = GL_UNSIGNED_INT;
 314             break;
 315         case GL_DEPTH24_STENCIL8_EXT:
 316             rrb->base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
 317             rrb->base._BaseFormat = GL_DEPTH_STENCIL_EXT;
 318             rrb->base.DepthBits = 24;
 319             rrb->base.StencilBits = 8;
 320             rrb->base.DataType = GL_UNSIGNED_INT_24_8_EXT;
 321             break;
 322         default:
 323             fprintf(stderr, "%s: Unknown format 0x%04x\n", __FUNCTION__, format);
 324             _mesa_delete_renderbuffer(&rrb->base);
 325             return NULL;
 326     }
 327
 328     rrb->dPriv = driDrawPriv;
 329     rrb->base.InternalFormat = format;
 330
 331     rrb->base.Delete = radeon_delete_renderbuffer;
 332     rrb->base.AllocStorage = radeon_alloc_window_storage;
 333     rrb->base.GetPointer = radeon_get_pointer;
 334
 335     rrb->bo = NULL;
 336     return rrb;
 337 }
 338
 339 static struct gl_renderbuffer *
 340 radeon_new_renderbuffer(GLcontext * ctx, GLuint name)
 341 {
 342   struct radeon_renderbuffer *rrb;
 343
 344   rrb = CALLOC_STRUCT(radeon_renderbuffer);
 345   if (!rrb)
 346     return NULL;
 347
 348   _mesa_init_renderbuffer(&rrb->base, name);
 349   rrb->base.ClassID = RADEON_RB_CLASS;
 350
 351   rrb->base.Delete = radeon_delete_renderbuffer;
 352   rrb->base.AllocStorage = radeon_alloc_renderbuffer_storage;
 353   rrb->base.GetPointer = radeon_get_pointer;
 354
 355   return &rrb->base;
 356 }
 357
 358 static void
 359 radeon_bind_framebuffer(GLcontext * ctx, GLenum target,
 360                        struct gl_framebuffer *fb, struct gl_framebuffer *fbread)
 361 {
 362    if (target == GL_FRAMEBUFFER_EXT || target == GL_DRAW_FRAMEBUFFER_EXT) {
 363       radeon_draw_buffer(ctx, fb);
 364    }
 365    else {
 366       /* don't need to do anything if target == GL_READ_FRAMEBUFFER_EXT */
 367    }
 368 }
 369
 370 static void
 371 radeon_framebuffer_renderbuffer(GLcontext * ctx,
 372                                struct gl_framebuffer *fb,
 373                                GLenum attachment, struct gl_renderbuffer *rb)
 374 {
 375
 376         if (ctx->Driver.Flush)
 377                 ctx->Driver.Flush(ctx); /* +r6/r7 */
 378
 379    _mesa_framebuffer_renderbuffer(ctx, fb, attachment, rb);
 380    radeon_draw_buffer(ctx, fb);
 381 }
 382
 383
 384 static GLboolean
 385 radeon_update_wrapper(GLcontext *ctx, struct radeon_renderbuffer *rrb,
 386                      struct gl_texture_image *texImage)
 387 {
 388         int retry = 0;
 389         gl_format texFormat;
 390
 391 restart:
 392         if (texImage->TexFormat == MESA_FORMAT_ARGB8888) {
 393                 rrb->cpp = 4;
 394                 rrb->base._ActualFormat = GL_RGBA8;
 395                 rrb->base._BaseFormat = GL_RGBA;
 396                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 397                 DBG("Render to RGBA8 texture OK\n");
 398         }
 399         else if (texImage->TexFormat == MESA_FORMAT_RGB565) {
 400                 rrb->cpp = 2;
 401                 rrb->base._ActualFormat = GL_RGB5;
 402                 rrb->base._BaseFormat = GL_RGB;
 403                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 404                 DBG("Render to RGB5 texture OK\n");
 405         }
 406         else if (texImage->TexFormat == MESA_FORMAT_ARGB1555) {
 407                 rrb->cpp = 2;
 408                 rrb->base._ActualFormat = GL_RGB5_A1;
 409                 rrb->base._BaseFormat = GL_RGBA;
 410                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 411                 DBG("Render to ARGB1555 texture OK\n");
 412         }
 413         else if (texImage->TexFormat == MESA_FORMAT_ARGB4444) {
 414                 rrb->cpp = 2;
 415                 rrb->base._ActualFormat = GL_RGBA4;
 416                 rrb->base._BaseFormat = GL_RGBA;
 417                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 418                 DBG("Render to ARGB1555 texture OK\n");
 419         }
 420         else if (texImage->TexFormat == MESA_FORMAT_Z16) {
 421                 rrb->cpp = 2;
 422                 rrb->base._ActualFormat = GL_DEPTH_COMPONENT16;
 423                 rrb->base._BaseFormat = GL_DEPTH_COMPONENT;
 424                 rrb->base.DataType = GL_UNSIGNED_SHORT;
 425                 DBG("Render to DEPTH16 texture OK\n");
 426         }
 427         else if (texImage->TexFormat == MESA_FORMAT_S8_Z24) {
 428                 rrb->cpp = 4;
 429                 rrb->base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
 430                 rrb->base._BaseFormat = GL_DEPTH_STENCIL_EXT;
 431                 rrb->base.DataType = GL_UNSIGNED_INT_24_8_EXT;
 432                 DBG("Render to DEPTH_STENCIL texture OK\n");
 433         }
 434         else {
 435                 /* try redoing the FBO */
 436                 if (retry == 1) {
 437                         DBG("Render to texture BAD FORMAT %d\n",
 438                             texImage->TexFormat);
 439                         return GL_FALSE;
 440                 }
 441                 texImage->TexFormat = radeonChooseTextureFormat(ctx, texImage->InternalFormat, 0,
 442                                                                 _mesa_get_format_datatype(texImage->TexFormat),
 443                                                                 1);
 444
 445                 retry++;
 446                 goto restart;
 447         }
 448
 449         texFormat = texImage->TexFormat;
 450
 451         rrb->pitch = texImage->Width * rrb->cpp;
 452         rrb->base.InternalFormat = rrb->base._ActualFormat;
 453         rrb->base.Width = texImage->Width;
 454         rrb->base.Height = texImage->Height;
 455         rrb->base.RedBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE);
 456         rrb->base.GreenBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE);
 457         rrb->base.BlueBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_BLUE_SIZE);
 458         rrb->base.AlphaBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_ALPHA_SIZE);
 459         rrb->base.DepthBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_DEPTH_SIZE_ARB);
 460         rrb->base.StencilBits = _mesa_get_format_bits(texFormat, GL_TEXTURE_STENCIL_SIZE_EXT);
 461
 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 }