src/gallium/state_trackers/dri/dri_drawable.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009, VMware, 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 VMWARE 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  * Author: Keith Whitwell <keithw@vmware.com>
  29  * Author: Jakob Bornecrantz <wallbraker@gmail.com>
  30  */
  31
  32 #include "dri_screen.h"
  33 #include "dri_context.h"
  34 #include "dri_drawable.h"
  35
  36 #include "pipe/p_context.h"
  37 #include "pipe/p_screen.h"
  38 #include "pipe/p_inlines.h"
  39 #include "main/mtypes.h"
  40 #include "main/renderbuffer.h"
  41 #include "state_tracker/drm_api.h"
  42 #include "state_tracker/dri1_api.h"
  43 #include "state_tracker/st_public.h"
  44 #include "state_tracker/st_context.h"
  45 #include "state_tracker/st_cb_fbo.h"
  46
  47 #include "util/u_memory.h"
  48 #include "util/u_rect.h"
  49
  50 static struct pipe_surface *
  51 dri_surface_from_handle(struct drm_api *api,
  52                         struct pipe_screen *screen,
  53                         unsigned handle,
  54                         enum pipe_format format,
  55                         unsigned width, unsigned height, unsigned pitch)
  56 {
  57    struct pipe_surface *surface = NULL;
  58    struct pipe_texture *texture = NULL;
  59    struct pipe_texture templat;
  60
  61    memset(&templat, 0, sizeof(templat));
  62    templat.tex_usage |= PIPE_TEXTURE_USAGE_RENDER_TARGET;
  63    templat.target = PIPE_TEXTURE_2D;
  64    templat.last_level = 0;
  65    templat.depth[0] = 1;
  66    templat.format = format;
  67    templat.width[0] = width;
  68    templat.height[0] = height;
  69    pf_get_block(templat.format, &templat.block);
  70
  71    texture = api->texture_from_shared_handle(api, screen, &templat,
  72                                              "dri2 buffer", pitch, handle);
  73
  74    if (!texture) {
  75       debug_printf("%s: Failed to blanket the buffer with a texture\n", __func__);
  76       return NULL;
  77    }
  78
  79    surface = screen->get_tex_surface(screen, texture, 0, 0, 0,
  80                                      PIPE_BUFFER_USAGE_GPU_READ |
  81                                      PIPE_BUFFER_USAGE_GPU_WRITE);
  82
  83    /* we don't need the texture from this point on */
  84    pipe_texture_reference(&texture, NULL);
  85    return surface;
  86 }
  87
  88 /**
  89  * Pixmaps have will have the same name of fake front and front.
  90  */
  91 static boolean
  92 dri2_check_if_pixmap(__DRIbuffer *buffers, int count)
  93 {
  94    boolean found = FALSE;
  95    boolean is_pixmap = FALSE;
  96    unsigned name;
  97    int i;
  98
  99    for (i = 0; i < count; i++) {
 100       switch (buffers[i].attachment) {
 101       case __DRI_BUFFER_FRONT_LEFT:
 102       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 103          if (found) {
 104             is_pixmap = buffers[i].name == name;
 105          } else {
 106             name = buffers[i].name;
 107             found = TRUE;
 108          }
 109       default:
 110          continue;
 111       }
 112    }
 113
 114    return is_pixmap;
 115 }
 116
 117 /**
 118  * This will be called a drawable is known to have been resized.
 119  */
 120 void
 121 dri_get_buffers(__DRIdrawablePrivate * dPriv)
 122 {
 123
 124    struct dri_drawable *drawable = dri_drawable(dPriv);
 125    struct pipe_surface *surface = NULL;
 126    struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
 127    __DRIbuffer *buffers = NULL;
 128    __DRIscreen *dri_screen = drawable->sPriv;
 129    __DRIdrawable *dri_drawable = drawable->dPriv;
 130    struct drm_api *api = ((struct dri_screen*)(dri_screen->private))->api;
 131    boolean have_depth = FALSE;
 132    int i, count;
 133
 134    buffers = (*dri_screen->dri2.loader->getBuffers) (dri_drawable,
 135                                                      &dri_drawable->w,
 136                                                      &dri_drawable->h,
 137                                                      drawable->attachments,
 138                                                      drawable->
 139                                                      num_attachments, &count,
 140                                                      dri_drawable->
 141                                                      loaderPrivate);
 142
 143    if (buffers == NULL) {
 144       return;
 145    }
 146
 147    /* set one cliprect to cover the whole dri_drawable */
 148    dri_drawable->x = 0;
 149    dri_drawable->y = 0;
 150    dri_drawable->backX = 0;
 151    dri_drawable->backY = 0;
 152    dri_drawable->numClipRects = 1;
 153    dri_drawable->pClipRects[0].x1 = 0;
 154    dri_drawable->pClipRects[0].y1 = 0;
 155    dri_drawable->pClipRects[0].x2 = dri_drawable->w;
 156    dri_drawable->pClipRects[0].y2 = dri_drawable->h;
 157    dri_drawable->numBackClipRects = 1;
 158    dri_drawable->pBackClipRects[0].x1 = 0;
 159    dri_drawable->pBackClipRects[0].y1 = 0;
 160    dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
 161    dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
 162
 163    if (drawable->old_num == count &&
 164        drawable->old_w == dri_drawable->w &&
 165        drawable->old_h == dri_drawable->h &&
 166        memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0) {
 167        return;
 168    } else {
 169       drawable->old_num = count;
 170       drawable->old_w = dri_drawable->w;
 171       drawable->old_h = dri_drawable->h;
 172       memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
 173    }
 174
 175    drawable->is_pixmap = dri2_check_if_pixmap(buffers, count);
 176
 177    for (i = 0; i < count; i++) {
 178       enum pipe_format format = 0;
 179       int index = 0;
 180
 181       switch (buffers[i].attachment) {
 182       case __DRI_BUFFER_FRONT_LEFT:
 183          continue;
 184       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 185          index = ST_SURFACE_FRONT_LEFT;
 186          format = drawable->color_format;
 187          break;
 188       case __DRI_BUFFER_BACK_LEFT:
 189          index = ST_SURFACE_BACK_LEFT;
 190          format = drawable->color_format;
 191          break;
 192       case __DRI_BUFFER_DEPTH:
 193       case __DRI_BUFFER_DEPTH_STENCIL:
 194       case __DRI_BUFFER_STENCIL:
 195          index = ST_SURFACE_DEPTH;
 196          format = drawable->depth_stencil_format;
 197          break;
 198       case __DRI_BUFFER_ACCUM:
 199       default:
 200          assert(0);
 201       }
 202
 203       if (index == ST_SURFACE_DEPTH) {
 204          if (have_depth)
 205             continue;
 206          else
 207             have_depth = TRUE;
 208       }
 209
 210       surface = dri_surface_from_handle(api,
 211                                         screen,
 212                                         buffers[i].name,
 213                                         format,
 214                                         dri_drawable->w,
 215                                         dri_drawable->h, buffers[i].pitch);
 216
 217       switch (buffers[i].attachment) {
 218       case __DRI_BUFFER_FRONT_LEFT:
 219       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 220       case __DRI_BUFFER_BACK_LEFT:
 221          drawable->color_format = surface->format;
 222          break;
 223       case __DRI_BUFFER_DEPTH:
 224       case __DRI_BUFFER_DEPTH_STENCIL:
 225       case __DRI_BUFFER_STENCIL:
 226          drawable->depth_stencil_format = surface->format;
 227          break;
 228       case __DRI_BUFFER_ACCUM:
 229       default:
 230          assert(0);
 231       }
 232
 233       st_set_framebuffer_surface(drawable->stfb, index, surface);
 234       pipe_surface_reference(&surface, NULL);
 235    }
 236    /* this needed, or else the state tracker fails to pick the new buffers */
 237    st_resize_framebuffer(drawable->stfb, dri_drawable->w, dri_drawable->h);
 238 }
 239
 240 /**
 241  * These are used for GLX_EXT_texture_from_pixmap
 242  */
 243 void dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
 244                           GLint format, __DRIdrawable *dPriv)
 245 {
 246    struct dri_drawable *drawable = dri_drawable(dPriv);
 247    struct pipe_surface *ps;
 248
 249    if (!drawable->stfb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer) {
 250       struct gl_renderbuffer *rb =
 251          st_new_renderbuffer_fb(drawable->color_format, 0 /*XXX*/, FALSE);
 252       _mesa_add_renderbuffer(&drawable->stfb->Base, BUFFER_FRONT_LEFT, rb);
 253    }
 254
 255    dri_get_buffers(drawable->dPriv);
 256    st_get_framebuffer_surface(drawable->stfb, ST_SURFACE_FRONT_LEFT, &ps);
 257
 258    if (!ps)
 259       return;
 260
 261    st_bind_texture_surface(ps, target == GL_TEXTURE_2D ? ST_TEXTURE_2D :
 262                            ST_TEXTURE_RECT, 0, drawable->color_format);
 263 }
 264
 265 void dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
 266                          __DRIdrawable *dPriv)
 267 {
 268    dri2_set_tex_buffer2(pDRICtx, target, GLX_TEXTURE_FORMAT_RGBA_EXT, dPriv);
 269 }
 270
 271 void
 272 dri_flush_frontbuffer(struct pipe_screen *screen,
 273                       struct pipe_surface *surf, void *context_private)
 274 {
 275    struct dri_context *ctx = (struct dri_context *)context_private;
 276    struct dri_drawable *drawable = dri_drawable(ctx->dPriv);
 277    __DRIdrawable *dri_drawable = ctx->dPriv;
 278    __DRIscreen *dri_screen = ctx->sPriv;
 279
 280    /* XXX Does this function get called with DRI1? */
 281
 282    if (ctx->dPriv == NULL) {
 283       debug_printf("%s: no drawable bound to context\n", __func__);
 284       return;
 285    }
 286
 287 #if 0
 288    /* TODO if rendering to pixmaps is slow enable this code. */
 289    if (drawable->is_pixmap)
 290       return;
 291 #else
 292    (void)drawable;
 293 #endif
 294
 295    (*dri_screen->dri2.loader->flushFrontBuffer)(dri_drawable,
 296                                                 dri_drawable->loaderPrivate);
 297 }
 298
 299 /**
 300  * This is called when we need to set up GL rendering to a new X window.
 301  */
 302 boolean
 303 dri_create_buffer(__DRIscreenPrivate * sPriv,
 304                   __DRIdrawablePrivate * dPriv,
 305                   const __GLcontextModes * visual, boolean isPixmap)
 306 {
 307    struct dri_screen *screen = sPriv->private;
 308    struct dri_drawable *drawable = NULL;
 309    int i;
 310
 311    if (isPixmap)
 312       goto fail;                       /* not implemented */
 313
 314    drawable = CALLOC_STRUCT(dri_drawable);
 315    if (drawable == NULL)
 316       goto fail;
 317
 318    if (visual->redBits == 8) {
 319       if (visual->alphaBits == 8)
 320          drawable->color_format = PIPE_FORMAT_A8R8G8B8_UNORM;
 321       else
 322          drawable->color_format = PIPE_FORMAT_X8R8G8B8_UNORM;
 323    } else {
 324       drawable->color_format = PIPE_FORMAT_R5G6B5_UNORM;
 325    }
 326
 327    switch(visual->depthBits) {
 328    default:
 329    case 0:
 330       drawable->depth_stencil_format = PIPE_FORMAT_NONE;
 331       break;
 332    case 16:
 333       drawable->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 334       break;
 335    case 24:
 336       if (visual->stencilBits == 0) {
 337          drawable->depth_stencil_format = (screen->d_depth_bits_last) ?
 338             PIPE_FORMAT_X8Z24_UNORM:
 339             PIPE_FORMAT_Z24X8_UNORM;
 340       } else {
 341          drawable->depth_stencil_format = (screen->sd_depth_bits_last) ?
 342             PIPE_FORMAT_S8Z24_UNORM:
 343             PIPE_FORMAT_Z24S8_UNORM;
 344       }
 345       break;
 346    case 32:
 347       drawable->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 348       break;
 349    }
 350
 351    drawable->stfb = st_create_framebuffer(visual,
 352                                           drawable->color_format,
 353                                           drawable->depth_stencil_format,
 354                                           drawable->depth_stencil_format,
 355                                           dPriv->w,
 356                                           dPriv->h, (void *)drawable);
 357    if (drawable->stfb == NULL)
 358       goto fail;
 359
 360    drawable->sPriv = sPriv;
 361    drawable->dPriv = dPriv;
 362    dPriv->driverPrivate = (void *)drawable;
 363
 364    /* setup dri2 buffers information */
 365    /* TODO incase of double buffer visual, delay fake creation */
 366    i = 0;
 367    drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 368
 369    if (visual->doubleBufferMode)
 370       drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 371    else
 372       drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
 373    if (visual->depthBits && visual->stencilBits)
 374       drawable->attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 375    else if (visual->depthBits)
 376       drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
 377    else if (visual->stencilBits)
 378       drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
 379    drawable->num_attachments = i;
 380
 381    drawable->desired_fences = 2;
 382
 383    return GL_TRUE;
 384  fail:
 385    FREE(drawable);
 386    return GL_FALSE;
 387 }
 388
 389 static struct pipe_fence_handle *
 390 dri_swap_fences_pop_front(struct dri_drawable *draw)
 391 {
 392    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 393    struct pipe_fence_handle *fence = NULL;
 394
 395    if (draw->cur_fences >= draw->desired_fences) {
 396       screen->fence_reference(screen, &fence, draw->swap_fences[draw->tail]);
 397       screen->fence_reference(screen, &draw->swap_fences[draw->tail++], NULL);
 398       --draw->cur_fences;
 399       draw->tail &= DRI_SWAP_FENCES_MASK;
 400    }
 401    return fence;
 402 }
 403
 404 static void
 405 dri_swap_fences_push_back(struct dri_drawable *draw,
 406                           struct pipe_fence_handle *fence)
 407 {
 408    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 409
 410    if (!fence)
 411       return;
 412
 413    if (draw->cur_fences < DRI_SWAP_FENCES_MAX) {
 414       draw->cur_fences++;
 415       screen->fence_reference(screen, &draw->swap_fences[draw->head++],
 416                               fence);
 417       draw->head &= DRI_SWAP_FENCES_MASK;
 418    }
 419 }
 420
 421 void
 422 dri_destroy_buffer(__DRIdrawablePrivate * dPriv)
 423 {
 424    struct dri_drawable *drawable = dri_drawable(dPriv);
 425    struct pipe_fence_handle *fence;
 426    struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
 427
 428    st_unreference_framebuffer(drawable->stfb);
 429    drawable->desired_fences = 0;
 430    while (drawable->cur_fences) {
 431       fence = dri_swap_fences_pop_front(drawable);
 432       screen->fence_reference(screen, &fence, NULL);
 433    }
 434
 435    FREE(drawable);
 436 }
 437
 438 static void
 439 dri1_update_drawables_locked(struct dri_context *ctx,
 440                              __DRIdrawablePrivate * driDrawPriv,
 441                              __DRIdrawablePrivate * driReadPriv)
 442 {
 443    if (ctx->stLostLock) {
 444       ctx->stLostLock = FALSE;
 445       if (driDrawPriv == driReadPriv)
 446          DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
 447       else
 448          DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
 449                                          driReadPriv);
 450    }
 451 }
 452
 453 /**
 454  * This ensures all contexts which bind to a drawable pick up the
 455  * drawable change and signal new buffer state.
 456  * Calling st_resize_framebuffer for each context may seem like overkill,
 457  * but no new buffers will actually be allocated if the dimensions don't
 458  * change.
 459  */
 460
 461 static void
 462 dri1_propagate_drawable_change(struct dri_context *ctx)
 463 {
 464    __DRIdrawablePrivate *dPriv = ctx->dPriv;
 465    __DRIdrawablePrivate *rPriv = ctx->rPriv;
 466    boolean flushed = FALSE;
 467
 468    if (dPriv && ctx->d_stamp != dPriv->lastStamp) {
 469
 470       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 471       flushed = TRUE;
 472       ctx->d_stamp = dPriv->lastStamp;
 473       st_resize_framebuffer(dri_drawable(dPriv)->stfb, dPriv->w, dPriv->h);
 474
 475    }
 476
 477    if (rPriv && dPriv != rPriv && ctx->r_stamp != rPriv->lastStamp) {
 478
 479       if (!flushed)
 480          st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 481       ctx->r_stamp = rPriv->lastStamp;
 482       st_resize_framebuffer(dri_drawable(rPriv)->stfb, rPriv->w, rPriv->h);
 483
 484    } else if (rPriv && dPriv == rPriv) {
 485
 486       ctx->r_stamp = ctx->d_stamp;
 487
 488    }
 489 }
 490
 491 void
 492 dri1_update_drawables(struct dri_context *ctx,
 493                       struct dri_drawable *draw, struct dri_drawable *read)
 494 {
 495    dri_lock(ctx);
 496    dri1_update_drawables_locked(ctx, draw->dPriv, read->dPriv);
 497    dri_unlock(ctx);
 498
 499    dri1_propagate_drawable_change(ctx);
 500 }
 501
 502 static INLINE boolean
 503 dri1_intersect_src_bbox(struct drm_clip_rect *dst,
 504                         int dst_x,
 505                         int dst_y,
 506                         const struct drm_clip_rect *src,
 507                         const struct drm_clip_rect *bbox)
 508 {
 509    int xy1;
 510    int xy2;
 511
 512    xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
 513       (int)bbox->x1 + dst_x;
 514    xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
 515       (int)bbox->x2 + dst_x;
 516    if (xy1 >= xy2 || xy1 < 0)
 517       return FALSE;
 518
 519    dst->x1 = xy1;
 520    dst->x2 = xy2;
 521
 522    xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
 523       (int)bbox->y1 + dst_y;
 524    xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
 525       (int)bbox->y2 + dst_y;
 526    if (xy1 >= xy2 || xy1 < 0)
 527       return FALSE;
 528
 529    dst->y1 = xy1;
 530    dst->y2 = xy2;
 531    return TRUE;
 532 }
 533
 534 static void
 535 dri1_swap_copy(struct dri_context *ctx,
 536                struct pipe_surface *dst,
 537                struct pipe_surface *src,
 538                __DRIdrawablePrivate * dPriv, const struct drm_clip_rect *bbox)
 539 {
 540    struct pipe_context *pipe = ctx->pipe;
 541    struct drm_clip_rect clip;
 542    struct drm_clip_rect *cur;
 543    int i;
 544
 545    cur = dPriv->pClipRects;
 546
 547    for (i = 0; i < dPriv->numClipRects; ++i) {
 548       if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox)) {
 549          if (pipe->surface_copy) {
 550             pipe->surface_copy(pipe, dst, clip.x1, clip.y1,
 551                                src,
 552                                (int)clip.x1 - dPriv->x,
 553                                (int)clip.y1 - dPriv->y,
 554                                clip.x2 - clip.x1, clip.y2 - clip.y1);
 555          } else {
 556             util_surface_copy(pipe, FALSE, dst, clip.x1, clip.y1,
 557                               src,
 558                               (int)clip.x1 - dPriv->x,
 559                               (int)clip.y1 - dPriv->y,
 560                               clip.x2 - clip.x1, clip.y2 - clip.y1);
 561          }
 562       }
 563    }
 564 }
 565
 566 static void
 567 dri1_copy_to_front(struct dri_context *ctx,
 568                    struct pipe_surface *surf,
 569                    __DRIdrawablePrivate * dPriv,
 570                    const struct drm_clip_rect *sub_box,
 571                    struct pipe_fence_handle **fence)
 572 {
 573    struct pipe_context *pipe = ctx->pipe;
 574    boolean save_lost_lock;
 575    uint cur_w;
 576    uint cur_h;
 577    struct drm_clip_rect bbox;
 578    boolean visible = TRUE;
 579
 580    *fence = NULL;
 581
 582    dri_lock(ctx);
 583    save_lost_lock = ctx->stLostLock;
 584    dri1_update_drawables_locked(ctx, dPriv, dPriv);
 585    st_get_framebuffer_dimensions(dri_drawable(dPriv)->stfb, &cur_w, &cur_h);
 586
 587    bbox.x1 = 0;
 588    bbox.x2 = cur_w;
 589    bbox.y1 = 0;
 590    bbox.y2 = cur_h;
 591
 592    if (sub_box)
 593       visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
 594
 595    if (visible && __dri1_api_hooks->present_locked) {
 596
 597       __dri1_api_hooks->present_locked(pipe,
 598                                        surf,
 599                                        dPriv->pClipRects,
 600                                        dPriv->numClipRects,
 601                                        dPriv->x, dPriv->y, &bbox, fence);
 602
 603    } else if (visible && __dri1_api_hooks->front_srf_locked) {
 604
 605       struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);
 606
 607       if (front)
 608          dri1_swap_copy(ctx, front, surf, dPriv, &bbox);
 609
 610       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, fence);
 611    }
 612
 613    ctx->stLostLock = save_lost_lock;
 614
 615    /**
 616     * FIXME: Revisit this: Update drawables on copy_sub_buffer ?
 617     */
 618
 619    if (!sub_box)
 620       dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);
 621
 622    dri_unlock(ctx);
 623    dri1_propagate_drawable_change(ctx);
 624 }
 625
 626 void
 627 dri1_flush_frontbuffer(struct pipe_screen *screen,
 628                        struct pipe_surface *surf, void *context_private)
 629 {
 630    struct dri_context *ctx = (struct dri_context *)context_private;
 631    struct pipe_fence_handle *dummy_fence;
 632
 633    dri1_copy_to_front(ctx, surf, ctx->dPriv, NULL, &dummy_fence);
 634    screen->fence_reference(screen, &dummy_fence, NULL);
 635
 636    /**
 637     * FIXME: Do we need swap throttling here?
 638     */
 639 }
 640
 641 void
 642 dri_swap_buffers(__DRIdrawablePrivate * dPriv)
 643 {
 644    struct dri_context *ctx;
 645    struct pipe_surface *back_surf;
 646    struct dri_drawable *draw = dri_drawable(dPriv);
 647    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 648    struct pipe_fence_handle *fence;
 649    struct st_context *st = st_get_current();
 650
 651    assert(__dri1_api_hooks != NULL);
 652
 653    if (!st)
 654       return;                          /* For now */
 655
 656    ctx = (struct dri_context *)st->pipe->priv;
 657
 658    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 659    if (back_surf) {
 660       st_notify_swapbuffers(draw->stfb);
 661       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 662       fence = dri_swap_fences_pop_front(draw);
 663       if (fence) {
 664          (void)screen->fence_finish(screen, fence, 0);
 665          screen->fence_reference(screen, &fence, NULL);
 666       }
 667       dri1_copy_to_front(ctx, back_surf, dPriv, NULL, &fence);
 668       dri_swap_fences_push_back(draw, fence);
 669       screen->fence_reference(screen, &fence, NULL);
 670    }
 671 }
 672
 673 void
 674 dri_copy_sub_buffer(__DRIdrawablePrivate * dPriv, int x, int y, int w, int h)
 675 {
 676    struct pipe_screen *screen = dri_screen(dPriv->driScreenPriv)->pipe_screen;
 677    struct drm_clip_rect sub_bbox;
 678    struct dri_context *ctx;
 679    struct pipe_surface *back_surf;
 680    struct dri_drawable *draw = dri_drawable(dPriv);
 681    struct pipe_fence_handle *dummy_fence;
 682    struct st_context *st = st_get_current();
 683
 684    assert(__dri1_api_hooks != NULL);
 685
 686    if (!st)
 687       return;
 688
 689    ctx = (struct dri_context *)st->pipe->priv;
 690
 691    sub_bbox.x1 = x;
 692    sub_bbox.x2 = x + w;
 693    sub_bbox.y1 = y;
 694    sub_bbox.y2 = y + h;
 695
 696    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 697    if (back_surf) {
 698       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 699       dri1_copy_to_front(ctx, back_surf, dPriv, &sub_bbox, &dummy_fence);
 700       screen->fence_reference(screen, &dummy_fence, NULL);
 701    }
 702 }
 703
 704 /* vim: set sw=3 ts=8 sts=3 expandtab: */