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 DEBUG_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 = width * height * cpp;
 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      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 restart:
 390         if (texImage->TexFormat == &_mesa_texformat_argb8888) {
 391                 rrb->cpp = 4;
 392                 rrb->base._ActualFormat = GL_RGBA8;
 393                 rrb->base._BaseFormat = GL_RGBA;
 394                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 395                 DBG("Render to RGBA8 texture OK\n");
 396         }
 397         else if (texImage->TexFormat == &_mesa_texformat_rgb565) {
 398                 rrb->cpp = 2;
 399                 rrb->base._ActualFormat = GL_RGB5;
 400                 rrb->base._BaseFormat = GL_RGB;
 401                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 402                 DBG("Render to RGB5 texture OK\n");
 403         }
 404         else if (texImage->TexFormat == &_mesa_texformat_argb1555) {
 405                 rrb->cpp = 2;
 406                 rrb->base._ActualFormat = GL_RGB5_A1;
 407                 rrb->base._BaseFormat = GL_RGBA;
 408                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 409                 DBG("Render to ARGB1555 texture OK\n");
 410         }
 411         else if (texImage->TexFormat == &_mesa_texformat_argb4444) {
 412                 rrb->cpp = 2;
 413                 rrb->base._ActualFormat = GL_RGBA4;
 414                 rrb->base._BaseFormat = GL_RGBA;
 415                 rrb->base.DataType = GL_UNSIGNED_BYTE;
 416                 DBG("Render to ARGB1555 texture OK\n");
 417         }
 418         else if (texImage->TexFormat == &_mesa_texformat_z16) {
 419                 rrb->cpp = 2;
 420                 rrb->base._ActualFormat = GL_DEPTH_COMPONENT16;
 421                 rrb->base._BaseFormat = GL_DEPTH_COMPONENT;
 422                 rrb->base.DataType = GL_UNSIGNED_SHORT;
 423                 DBG("Render to DEPTH16 texture OK\n");
 424         }
 425         else if (texImage->TexFormat == &_mesa_texformat_s8_z24) {
 426                 rrb->cpp = 4;
 427                 rrb->base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
 428                 rrb->base._BaseFormat = GL_DEPTH_STENCIL_EXT;
 429                 rrb->base.DataType = GL_UNSIGNED_INT_24_8_EXT;
 430                 DBG("Render to DEPTH_STENCIL texture OK\n");
 431         }
 432         else {
 433                 /* try redoing the FBO */
 434                 if (retry == 1) {
 435                         DBG("Render to texture BAD FORMAT %d\n",
 436                             texImage->TexFormat->MesaFormat);
 437                         return GL_FALSE;
 438                 }
 439                 texImage->TexFormat = radeonChooseTextureFormat(ctx, texImage->InternalFormat, 0,
 440                                                                 texImage->TexFormat->DataType,
 441                                                                 1);
 442
 443                 retry++;
 444                 goto restart;
 445         }
 446
 447         rrb->pitch = texImage->Width * rrb->cpp;
 448         rrb->base.InternalFormat = rrb->base._ActualFormat;
 449         rrb->base.Width = texImage->Width;
 450         rrb->base.Height = texImage->Height;
 451         rrb->base.RedBits = texImage->TexFormat->RedBits;
 452         rrb->base.GreenBits = texImage->TexFormat->GreenBits;
 453         rrb->base.BlueBits = texImage->TexFormat->BlueBits;
 454         rrb->base.AlphaBits = texImage->TexFormat->AlphaBits;
 455         rrb->base.DepthBits = texImage->TexFormat->DepthBits;
 456         rrb->base.StencilBits = texImage->TexFormat->StencilBits;
 457
 458         rrb->base.Delete = radeon_delete_renderbuffer;
 459         rrb->base.AllocStorage = radeon_nop_alloc_storage;
 460
 461         return GL_TRUE;
 462 }
 463
 464
 465 static struct radeon_renderbuffer *
 466 radeon_wrap_texture(GLcontext * ctx, struct gl_texture_image *texImage)
 467 {
 468   const GLuint name = ~0;   /* not significant, but distinct for debugging */
 469   struct radeon_renderbuffer *rrb;
 470
 471    /* make an radeon_renderbuffer to wrap the texture image */
 472    rrb = CALLOC_STRUCT(radeon_renderbuffer);
 473    if (!rrb) {
 474       _mesa_error(ctx, GL_OUT_OF_MEMORY, "glFramebufferTexture");
 475       return NULL;
 476    }
 477
 478    _mesa_init_renderbuffer(&rrb->base, name);
 479    rrb->base.ClassID = RADEON_RB_CLASS;
 480
 481    if (!radeon_update_wrapper(ctx, rrb, texImage)) {
 482       _mesa_free(rrb);
 483       return NULL;
 484    }
 485
 486    return rrb;
 487
 488 }
 489 static void
 490 radeon_render_texture(GLcontext * ctx,
 491                      struct gl_framebuffer *fb,
 492                      struct gl_renderbuffer_attachment *att)
 493 {
 494    struct gl_texture_image *newImage
 495       = att->Texture->Image[att->CubeMapFace][att->TextureLevel];
 496    struct radeon_renderbuffer *rrb = radeon_renderbuffer(att->Renderbuffer);
 497    radeon_texture_image *radeon_image;
 498    GLuint imageOffset;
 499
 500    (void) fb;
 501
 502    ASSERT(newImage);
 503
 504    if (newImage->Border != 0) {
 505       /* Fallback on drawing to a texture with a border, which won't have a
 506        * miptree.
 507        */
 508       _mesa_reference_renderbuffer(&att->Renderbuffer, NULL);
 509       _mesa_render_texture(ctx, fb, att);
 510       return;
 511    }
 512    else if (!rrb) {
 513       rrb = radeon_wrap_texture(ctx, newImage);
 514       if (rrb) {
 515          /* bind the wrapper to the attachment point */
 516          _mesa_reference_renderbuffer(&att->Renderbuffer, &rrb->base);
 517       }
 518       else {
 519          /* fallback to software rendering */
 520          _mesa_render_texture(ctx, fb, att);
 521          return;
 522       }
 523    }
 524
 525    if (!radeon_update_wrapper(ctx, rrb, newImage)) {
 526        _mesa_reference_renderbuffer(&att->Renderbuffer, NULL);
 527        _mesa_render_texture(ctx, fb, att);
 528        return;
 529    }
 530
 531    DBG("Begin render texture tid %x tex=%u w=%d h=%d refcount=%d\n",
 532        _glthread_GetID(),
 533        att->Texture->Name, newImage->Width, newImage->Height,
 534        rrb->base.RefCount);
 535
 536    /* point the renderbufer's region to the texture image region */
 537    radeon_image = (radeon_texture_image *)newImage;
 538    if (rrb->bo != radeon_image->mt->bo) {
 539       if (rrb->bo)
 540         radeon_bo_unref(rrb->bo);
 541       rrb->bo = radeon_image->mt->bo;
 542       radeon_bo_ref(rrb->bo);
 543    }
 544
 545    /* compute offset of the particular 2D image within the texture region */
 546    imageOffset = radeon_miptree_image_offset(radeon_image->mt,
 547                                             att->CubeMapFace,
 548                                             att->TextureLevel);
 549
 550    if (att->Texture->Target == GL_TEXTURE_3D) {
 551       GLuint offsets[6];
 552       radeon_miptree_depth_offsets(radeon_image->mt, att->TextureLevel,
 553                                    offsets);
 554       imageOffset += offsets[att->Zoffset];
 555    }
 556
 557    /* store that offset in the region */
 558    rrb->draw_offset = imageOffset;
 559
 560    /* update drawing region, etc */
 561    radeon_draw_buffer(ctx, fb);
 562 }
 563
 564 static void
 565 radeon_finish_render_texture(GLcontext * ctx,
 566                             struct gl_renderbuffer_attachment *att)
 567 {
 568
 569 }
 570 static void
 571 radeon_validate_framebuffer(GLcontext *ctx, struct gl_framebuffer *fb)
 572 {
 573 }
 574
 575 void radeon_fbo_init(struct radeon_context *radeon)
 576 {
 577   radeon->glCtx->Driver.NewFramebuffer = radeon_new_framebuffer;
 578   radeon->glCtx->Driver.NewRenderbuffer = radeon_new_renderbuffer;
 579   radeon->glCtx->Driver.BindFramebuffer = radeon_bind_framebuffer;
 580   radeon->glCtx->Driver.FramebufferRenderbuffer = radeon_framebuffer_renderbuffer;
 581   radeon->glCtx->Driver.RenderTexture = radeon_render_texture;
 582   radeon->glCtx->Driver.FinishRenderTexture = radeon_finish_render_texture;
 583   radeon->glCtx->Driver.ResizeBuffers = radeon_resize_buffers;
 584   radeon->glCtx->Driver.ValidateFramebuffer = radeon_validate_framebuffer;
 585   radeon->glCtx->Driver.BlitFramebuffer = _mesa_meta_blit_framebuffer;
 586 }
 587
 588
 589 void radeon_renderbuffer_set_bo(struct radeon_renderbuffer *rb,
 590                                 struct radeon_bo *bo)
 591 {
 592   struct radeon_bo *old;
 593   old = rb->bo;
 594   rb->bo = bo;
 595   radeon_bo_ref(bo);
 596   if (old)
 597     radeon_bo_unref(old);
 598 }