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
  39 #include "radeon_common.h"
  40 #include "radeon_mipmap_tree.h"
  41
  42 #define FILE_DEBUG_FLAG DEBUG_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 = width * height * cpp;
 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      rrb->pitch = pitch * cpp;
 187      rrb->cpp = cpp;
 188      rrb->bo = radeon_bo_open(radeon->radeonScreen->bom,
 189                               0,
 190                               size,
 191                               0,
 192                               RADEON_GEM_DOMAIN_VRAM,
 193                               0);
 194      rb->Width = width;
 195      rb->Height = height;
 196        return GL_TRUE;
 197    }
 198
 199 }
 200
 201
 202 /**
 203  * Called for each hardware renderbuffer when a _window_ is resized.
 204  * Just update fields.
 205  * Not used for user-created renderbuffers!
 206  */
 207 static GLboolean
 208 radeon_alloc_window_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
 209                            GLenum internalFormat, GLuint width, GLuint height)
 210 {
 211    ASSERT(rb->Name == 0);
 212    rb->Width = width;
 213    rb->Height = height;
 214    rb->_ActualFormat = internalFormat;
 215
 216    return GL_TRUE;
 217 }
 218
 219
 220 static void
 221 radeon_resize_buffers(GLcontext *ctx, struct gl_framebuffer *fb,
 222                      GLuint width, GLuint height)
 223 {
 224      struct radeon_framebuffer *radeon_fb = (struct radeon_framebuffer*)fb;
 225    int i;
 226
 227    _mesa_resize_framebuffer(ctx, fb, width, height);
 228
 229    fb->Initialized = GL_TRUE; /* XXX remove someday */
 230
 231    if (fb->Name != 0) {
 232       return;
 233    }
 234
 235    /* Make sure all window system renderbuffers are up to date */
 236    for (i = 0; i < 2; i++) {
 237       struct gl_renderbuffer *rb = &radeon_fb->color_rb[i]->base;
 238
 239       /* only resize if size is changing */
 240       if (rb && (rb->Width != width || rb->Height != height)) {
 241          rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height);
 242       }
 243    }
 244 }
 245
 246
 247 /** Dummy function for gl_renderbuffer::AllocStorage() */
 248 static GLboolean
 249 radeon_nop_alloc_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
 250                          GLenum internalFormat, GLuint width, GLuint height)
 251 {
 252    _mesa_problem(ctx, "radeon_op_alloc_storage should never be called.");
 253    return GL_FALSE;
 254 }
 255
 256 struct radeon_renderbuffer *
 257 radeon_create_renderbuffer(GLenum format, __DRIdrawablePrivate *driDrawPriv)
 258 {
 259     struct radeon_renderbuffer *rrb;
 260
 261     rrb = CALLOC_STRUCT(radeon_renderbuffer);
 262     if (!rrb)
 263         return NULL;
 264
 265     _mesa_init_renderbuffer(&rrb->base, 0);
 266     rrb->base.ClassID = RADEON_RB_CLASS;
 267
 268     /* XXX format junk */
 269     switch (format) {
 270         case GL_RGB5:
 271             rrb->base._ActualFormat = GL_RGB5;
 272             rrb->base._BaseFormat = GL_RGBA;
 273             rrb->base.RedBits = 5;
 274             rrb->base.GreenBits = 6;
 275             rrb->base.BlueBits = 5;
 276             rrb->base.DataType = GL_UNSIGNED_BYTE;
 277             break;
 278         case GL_RGB8:
 279             rrb->base._ActualFormat = GL_RGB8;
 280             rrb->base._BaseFormat = GL_RGB;
 281             rrb->base.RedBits = 8;
 282             rrb->base.GreenBits = 8;
 283             rrb->base.BlueBits = 8;
 284             rrb->base.AlphaBits = 0;
 285             rrb->base.DataType = GL_UNSIGNED_BYTE;
 286             break;
 287         case GL_RGBA8:
 288             rrb->base._ActualFormat = GL_RGBA8;
 289             rrb->base._BaseFormat = GL_RGBA;
 290             rrb->base.RedBits = 8;
 291             rrb->base.GreenBits = 8;
 292             rrb->base.BlueBits = 8;
 293             rrb->base.AlphaBits = 8;
 294             rrb->base.DataType = GL_UNSIGNED_BYTE;
 295             break;
 296         case GL_STENCIL_INDEX8_EXT:
 297             rrb->base._ActualFormat = GL_STENCIL_INDEX8_EXT;
 298             rrb->base._BaseFormat = GL_STENCIL_INDEX;
 299             rrb->base.StencilBits = 8;
 300             rrb->base.DataType = GL_UNSIGNED_BYTE;
 301             break;
 302         case GL_DEPTH_COMPONENT16:
 303             rrb->base._ActualFormat = GL_DEPTH_COMPONENT16;
 304             rrb->base._BaseFormat = GL_DEPTH_COMPONENT;
 305             rrb->base.DepthBits = 16;
 306             rrb->base.DataType = GL_UNSIGNED_SHORT;
 307             break;
 308         case GL_DEPTH_COMPONENT24:
 309             rrb->base._ActualFormat = GL_DEPTH_COMPONENT24;
 310             rrb->base._BaseFormat = GL_DEPTH_COMPONENT;
 311             rrb->base.DepthBits = 24;
 312             rrb->base.DataType = GL_UNSIGNED_INT;
 313             break;
 314         case GL_DEPTH24_STENCIL8_EXT:
 315             rrb->base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
 316             rrb->base._BaseFormat = GL_DEPTH_STENCIL_EXT;
 317             rrb->base.DepthBits = 24;
 318             rrb->base.StencilBits = 8;
 319             rrb->base.DataType = GL_UNSIGNED_INT_24_8_EXT;
 320             break;
 321         default:
 322             fprintf(stderr, "%s: Unknown format 0x%04x\n", __FUNCTION__, format);
 323             _mesa_delete_renderbuffer(&rrb->base);
 324             return NULL;
 325     }
 326
 327     rrb->dPriv = driDrawPriv;
 328     rrb->base.InternalFormat = format;
 329
 330     rrb->base.Delete = radeon_delete_renderbuffer;
 331     rrb->base.AllocStorage = radeon_alloc_window_storage;
 332     rrb->base.GetPointer = radeon_get_pointer;
 333
 334     rrb->bo = NULL;
 335     return rrb;
 336 }
 337
 338 static struct gl_renderbuffer *
 339 radeon_new_renderbuffer(GLcontext * ctx, GLuint name)
 340 {
 341   struct radeon_renderbuffer *rrb;
 342
 343   rrb = CALLOC_STRUCT(radeon_renderbuffer);
 344   if (!rrb)
 345     return NULL;
 346
 347   _mesa_init_renderbuffer(&rrb->base, name);
 348   rrb->base.ClassID = RADEON_RB_CLASS;
 349
 350   rrb->base.Delete = radeon_delete_renderbuffer;
 351   rrb->base.AllocStorage = radeon_alloc_renderbuffer_storage;
 352   rrb->base.GetPointer = radeon_get_pointer;
 353
 354   return &rrb->base;
 355 }
 356
 357 static void
 358 radeon_bind_framebuffer(GLcontext * ctx, GLenum target,
 359                        struct gl_framebuffer *fb, struct gl_framebuffer *fbread)
 360 {
 361    if (target == GL_FRAMEBUFFER_EXT || target == GL_DRAW_FRAMEBUFFER_EXT) {
 362       radeon_draw_buffer(ctx, fb);
 363    }
 364    else {
 365       /* don't need to do anything if target == GL_READ_FRAMEBUFFER_EXT */
 366    }
 367 }
 368
 369 static void
 370 radeon_framebuffer_renderbuffer(GLcontext * ctx,
 371                                struct gl_framebuffer *fb,
 372                                GLenum attachment, struct gl_renderbuffer *rb)
 373 {
 374
 375         if (ctx->Driver.Flush)
 376                 ctx->Driver.Flush(ctx); /* +r6/r7 */
 377
 378    _mesa_framebuffer_renderbuffer(ctx, fb, attachment, rb);
 379    radeon_draw_buffer(ctx, fb);
 380 }
 381
 382
 383 static GLboolean
 384 radeon_update_wrapper(GLcontext *ctx, struct radeon_renderbuffer *rrb,
 385                      struct gl_texture_image *texImage)
 386 {
 387         int retry = 0;
 388 restart:
 389         if (texImage->TexFormat == &_mesa_texformat_argb8888) {
 390                 rrb->cpp = 4;
 391                 rrb->base._ActualFormat = GL_RGBA8;
 392                 rrb->base._BaseFormat = GL_RGBA;
 393                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 394                 DBG("Render to RGBA8 texture OK\n");
 395         }
 396         else if (texImage->TexFormat == &_mesa_texformat_rgb565) {
 397                 rrb->cpp = 2;
 398                 rrb->base._ActualFormat = GL_RGB5;
 399                 rrb->base._BaseFormat = GL_RGB;
 400                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 401                 DBG("Render to RGB5 texture OK\n");
 402         }
 403         else if (texImage->TexFormat == &_mesa_texformat_argb1555) {
 404                 rrb->cpp = 2;
 405                 rrb->base._ActualFormat = GL_RGB5_A1;
 406                 rrb->base._BaseFormat = GL_RGBA;
 407                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 408                 DBG("Render to ARGB1555 texture OK\n");
 409         }
 410         else if (texImage->TexFormat == &_mesa_texformat_argb4444) {
 411                 rrb->cpp = 2;
 412                 rrb->base._ActualFormat = GL_RGBA4;
 413                 rrb->base._BaseFormat = GL_RGBA;
 414                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 415                 DBG("Render to ARGB1555 texture OK\n");
 416         }
 417         else if (texImage->TexFormat == &_mesa_texformat_z16) {
 418                 rrb->cpp = 2;
 419                 rrb->base._ActualFormat = GL_DEPTH_COMPONENT16;
 420                 rrb->base._BaseFormat = GL_DEPTH_COMPONENT;
 421                 rrb->base.DataType = GL_UNSIGNED_SHORT;
 422                 DBG("Render to DEPTH16 texture OK\n");
 423         }
 424         else if (texImage->TexFormat == &_mesa_texformat_s8_z24) {
 425                 rrb->cpp = 4;
 426                 rrb->base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
 427                 rrb->base._BaseFormat = GL_DEPTH_STENCIL_EXT;
 428                 rrb->base.DataType = GL_UNSIGNED_INT_24_8_EXT;
 429                 DBG("Render to DEPTH_STENCIL texture OK\n");
 430         }
 431         else {
 432                 /* try redoing the FBO */
 433                 if (retry == 1) {
 434                         DBG("Render to texture BAD FORMAT %d\n",
 435                             texImage->TexFormat->MesaFormat);
 436                         return GL_FALSE;
 437                 }
 438                 texImage->TexFormat = radeonChooseTextureFormat(ctx, texImage->InternalFormat, 0,
 439                                                                 texImage->TexFormat->DataType,
 440                                                                 1);
 441
 442                 retry++;
 443                 goto restart;
 444         }
 445
 446         rrb->pitch = texImage->Width * rrb->cpp;
 447         rrb->base.InternalFormat = rrb->base._ActualFormat;
 448         rrb->base.Width = texImage->Width;
 449         rrb->base.Height = texImage->Height;
 450         rrb->base.RedBits = texImage->TexFormat->RedBits;
 451         rrb->base.GreenBits = texImage->TexFormat->GreenBits;
 452         rrb->base.BlueBits = texImage->TexFormat->BlueBits;
 453         rrb->base.AlphaBits = texImage->TexFormat->AlphaBits;
 454         rrb->base.DepthBits = texImage->TexFormat->DepthBits;
 455         rrb->base.StencilBits = texImage->TexFormat->StencilBits;
 456
 457         rrb->base.Delete = radeon_delete_renderbuffer;
 458         rrb->base.AllocStorage = radeon_nop_alloc_storage;
 459
 460         return GL_TRUE;
 461 }
 462
 463
 464 static struct radeon_renderbuffer *
 465 radeon_wrap_texture(GLcontext * ctx, struct gl_texture_image *texImage)
 466 {
 467   const GLuint name = ~0;   /* not significant, but distinct for debugging */
 468   struct radeon_renderbuffer *rrb;
 469
 470    /* make an radeon_renderbuffer to wrap the texture image */
 471    rrb = CALLOC_STRUCT(radeon_renderbuffer);
 472    if (!rrb) {
 473       _mesa_error(ctx, GL_OUT_OF_MEMORY, "glFramebufferTexture");
 474       return NULL;
 475    }
 476
 477    _mesa_init_renderbuffer(&rrb->base, name);
 478    rrb->base.ClassID = RADEON_RB_CLASS;
 479
 480    if (!radeon_update_wrapper(ctx, rrb, texImage)) {
 481       _mesa_free(rrb);
 482       return NULL;
 483    }
 484
 485    return rrb;
 486
 487 }
 488 static void
 489 radeon_render_texture(GLcontext * ctx,
 490                      struct gl_framebuffer *fb,
 491                      struct gl_renderbuffer_attachment *att)
 492 {
 493    struct gl_texture_image *newImage
 494       = att->Texture->Image[att->CubeMapFace][att->TextureLevel];
 495    struct radeon_renderbuffer *rrb = radeon_renderbuffer(att->Renderbuffer);
 496    radeon_texture_image *radeon_image;
 497    GLuint imageOffset;
 498
 499    (void) fb;
 500
 501    ASSERT(newImage);
 502
 503    if (newImage->Border != 0) {
 504       /* Fallback on drawing to a texture with a border, which won't have a
 505        * miptree.
 506        */
 507       _mesa_reference_renderbuffer(&att->Renderbuffer, NULL);
 508       _mesa_render_texture(ctx, fb, att);
 509       return;
 510    }
 511    else if (!rrb) {
 512       rrb = radeon_wrap_texture(ctx, newImage);
 513       if (rrb) {
 514          /* bind the wrapper to the attachment point */
 515          _mesa_reference_renderbuffer(&att->Renderbuffer, &rrb->base);
 516       }
 517       else {
 518          /* fallback to software rendering */
 519          _mesa_render_texture(ctx, fb, att);
 520          return;
 521       }
 522    }
 523
 524    if (!radeon_update_wrapper(ctx, rrb, newImage)) {
 525        _mesa_reference_renderbuffer(&att->Renderbuffer, NULL);
 526        _mesa_render_texture(ctx, fb, att);
 527        return;
 528    }
 529
 530    DBG("Begin render texture tid %x tex=%u w=%d h=%d refcount=%d\n",
 531        _glthread_GetID(),
 532        att->Texture->Name, newImage->Width, newImage->Height,
 533        rrb->base.RefCount);
 534
 535    /* point the renderbufer's region to the texture image region */
 536    radeon_image = (radeon_texture_image *)newImage;
 537    if (rrb->bo != radeon_image->mt->bo) {
 538       if (rrb->bo)
 539         radeon_bo_unref(rrb->bo);
 540       rrb->bo = radeon_image->mt->bo;
 541       radeon_bo_ref(rrb->bo);
 542    }
 543
 544    /* compute offset of the particular 2D image within the texture region */
 545    imageOffset = radeon_miptree_image_offset(radeon_image->mt,
 546                                             att->CubeMapFace,
 547                                             att->TextureLevel);
 548
 549    if (att->Texture->Target == GL_TEXTURE_3D) {
 550       GLuint offsets[6];
 551       radeon_miptree_depth_offsets(radeon_image->mt, att->TextureLevel,
 552                                    offsets);
 553       imageOffset += offsets[att->Zoffset];
 554    }
 555
 556    /* store that offset in the region */
 557    rrb->draw_offset = imageOffset;
 558
 559    /* update drawing region, etc */
 560    radeon_draw_buffer(ctx, fb);
 561 }
 562
 563 static void
 564 radeon_finish_render_texture(GLcontext * ctx,
 565                             struct gl_renderbuffer_attachment *att)
 566 {
 567
 568 }
 569 static void
 570 radeon_validate_framebuffer(GLcontext *ctx, struct gl_framebuffer *fb)
 571 {
 572 }
 573
 574 static void
 575 radeon_blit_framebuffer(GLcontext *ctx,
 576                        GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
 577                        GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
 578                        GLbitfield mask, GLenum filter)
 579 {
 580 }
 581
 582 void radeon_fbo_init(struct radeon_context *radeon)
 583 {
 584   radeon->glCtx->Driver.NewFramebuffer = radeon_new_framebuffer;
 585   radeon->glCtx->Driver.NewRenderbuffer = radeon_new_renderbuffer;
 586   radeon->glCtx->Driver.BindFramebuffer = radeon_bind_framebuffer;
 587   radeon->glCtx->Driver.FramebufferRenderbuffer = radeon_framebuffer_renderbuffer;
 588   radeon->glCtx->Driver.RenderTexture = radeon_render_texture;
 589   radeon->glCtx->Driver.FinishRenderTexture = radeon_finish_render_texture;
 590   radeon->glCtx->Driver.ResizeBuffers = radeon_resize_buffers;
 591   radeon->glCtx->Driver.ValidateFramebuffer = radeon_validate_framebuffer;
 592   radeon->glCtx->Driver.BlitFramebuffer = radeon_blit_framebuffer;
 593 }
 594
 595
 596 void radeon_renderbuffer_set_bo(struct radeon_renderbuffer *rb,
 597                                 struct radeon_bo *bo)
 598 {
 599   struct radeon_bo *old;
 600   old = rb->bo;
 601   rb->bo = bo;
 602   radeon_bo_ref(bo);
 603   if (old)
 604     radeon_bo_unref(old);
 605 }