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.depth0 = 1;
  66    templat.format = format;
  67    templat.width0 = width;
  68    templat.height0 = height;
  69
  70    texture = api->texture_from_shared_handle(api, screen, &templat,
  71                                              "dri2 buffer", pitch, handle);
  72
  73    if (!texture) {
  74       debug_printf("%s: Failed to blanket the buffer with a texture\n", __func__);
  75       return NULL;
  76    }
  77
  78    surface = screen->get_tex_surface(screen, texture, 0, 0, 0,
  79                                      PIPE_BUFFER_USAGE_GPU_READ |
  80                                      PIPE_BUFFER_USAGE_GPU_WRITE);
  81
  82    /* we don't need the texture from this point on */
  83    pipe_texture_reference(&texture, NULL);
  84    return surface;
  85 }
  86
  87 /**
  88  * Pixmaps have will have the same name of fake front and front.
  89  */
  90 static boolean
  91 dri2_check_if_pixmap(__DRIbuffer *buffers, int count)
  92 {
  93    boolean found = FALSE;
  94    boolean is_pixmap = FALSE;
  95    unsigned name;
  96    int i;
  97
  98    for (i = 0; i < count; i++) {
  99       switch (buffers[i].attachment) {
 100       case __DRI_BUFFER_FRONT_LEFT:
 101       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 102          if (found) {
 103             is_pixmap = buffers[i].name == name;
 104          } else {
 105             name = buffers[i].name;
 106             found = TRUE;
 107          }
 108       default:
 109          continue;
 110       }
 111    }
 112
 113    return is_pixmap;
 114 }
 115
 116 /**
 117  * This will be called a drawable is known to have been resized.
 118  */
 119 void
 120 dri_get_buffers(__DRIdrawablePrivate * dPriv)
 121 {
 122
 123    struct dri_drawable *drawable = dri_drawable(dPriv);
 124    struct pipe_surface *surface = NULL;
 125    struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
 126    __DRIbuffer *buffers = NULL;
 127    __DRIscreen *dri_screen = drawable->sPriv;
 128    __DRIdrawable *dri_drawable = drawable->dPriv;
 129    struct drm_api *api = ((struct dri_screen*)(dri_screen->private))->api;
 130    boolean have_depth = FALSE;
 131    int i, count;
 132
 133    buffers = (*dri_screen->dri2.loader->getBuffers) (dri_drawable,
 134                                                      &dri_drawable->w,
 135                                                      &dri_drawable->h,
 136                                                      drawable->attachments,
 137                                                      drawable->
 138                                                      num_attachments, &count,
 139                                                      dri_drawable->
 140                                                      loaderPrivate);
 141
 142    if (buffers == NULL) {
 143       return;
 144    }
 145
 146    /* set one cliprect to cover the whole dri_drawable */
 147    dri_drawable->x = 0;
 148    dri_drawable->y = 0;
 149    dri_drawable->backX = 0;
 150    dri_drawable->backY = 0;
 151    dri_drawable->numClipRects = 1;
 152    dri_drawable->pClipRects[0].x1 = 0;
 153    dri_drawable->pClipRects[0].y1 = 0;
 154    dri_drawable->pClipRects[0].x2 = dri_drawable->w;
 155    dri_drawable->pClipRects[0].y2 = dri_drawable->h;
 156    dri_drawable->numBackClipRects = 1;
 157    dri_drawable->pBackClipRects[0].x1 = 0;
 158    dri_drawable->pBackClipRects[0].y1 = 0;
 159    dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
 160    dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
 161
 162    if (drawable->old_num == count &&
 163        drawable->old_w == dri_drawable->w &&
 164        drawable->old_h == dri_drawable->h &&
 165        memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0) {
 166        return;
 167    } else {
 168       drawable->old_num = count;
 169       drawable->old_w = dri_drawable->w;
 170       drawable->old_h = dri_drawable->h;
 171       memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
 172    }
 173
 174    drawable->is_pixmap = dri2_check_if_pixmap(buffers, count);
 175
 176    for (i = 0; i < count; i++) {
 177       enum pipe_format format = 0;
 178       int index = 0;
 179
 180       switch (buffers[i].attachment) {
 181       case __DRI_BUFFER_FRONT_LEFT:
 182       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 183          index = ST_SURFACE_FRONT_LEFT;
 184          format = drawable->color_format;
 185          break;
 186       case __DRI_BUFFER_BACK_LEFT:
 187          index = ST_SURFACE_BACK_LEFT;
 188          format = drawable->color_format;
 189          break;
 190       case __DRI_BUFFER_DEPTH:
 191       case __DRI_BUFFER_DEPTH_STENCIL:
 192       case __DRI_BUFFER_STENCIL:
 193          index = ST_SURFACE_DEPTH;
 194          format = drawable->depth_stencil_format;
 195          break;
 196       case __DRI_BUFFER_ACCUM:
 197       default:
 198          assert(0);
 199       }
 200
 201       if (index == ST_SURFACE_DEPTH) {
 202          if (have_depth)
 203             continue;
 204          else
 205             have_depth = TRUE;
 206       }
 207
 208       surface = dri_surface_from_handle(api,
 209                                         screen,
 210                                         buffers[i].name,
 211                                         format,
 212                                         dri_drawable->w,
 213                                         dri_drawable->h, buffers[i].pitch);
 214
 215       switch (buffers[i].attachment) {
 216       case __DRI_BUFFER_FRONT_LEFT:
 217       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 218       case __DRI_BUFFER_BACK_LEFT:
 219          drawable->color_format = surface->format;
 220          break;
 221       case __DRI_BUFFER_DEPTH:
 222       case __DRI_BUFFER_DEPTH_STENCIL:
 223       case __DRI_BUFFER_STENCIL:
 224          drawable->depth_stencil_format = surface->format;
 225          break;
 226       case __DRI_BUFFER_ACCUM:
 227       default:
 228          assert(0);
 229       }
 230
 231       st_set_framebuffer_surface(drawable->stfb, index, surface);
 232       pipe_surface_reference(&surface, NULL);
 233    }
 234    /* this needed, or else the state tracker fails to pick the new buffers */
 235    st_resize_framebuffer(drawable->stfb, dri_drawable->w, dri_drawable->h);
 236 }
 237
 238 /**
 239  * These are used for GLX_EXT_texture_from_pixmap
 240  */
 241 void dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
 242                           GLint format, __DRIdrawable *dPriv)
 243 {
 244    struct dri_drawable *drawable = dri_drawable(dPriv);
 245    struct pipe_surface *ps;
 246
 247    if (!drawable->stfb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer) {
 248       struct gl_renderbuffer *rb =
 249          st_new_renderbuffer_fb(drawable->color_format, 0 /*XXX*/, FALSE);
 250       _mesa_add_renderbuffer(&drawable->stfb->Base, BUFFER_FRONT_LEFT, rb);
 251    }
 252
 253    dri_get_buffers(drawable->dPriv);
 254    st_get_framebuffer_surface(drawable->stfb, ST_SURFACE_FRONT_LEFT, &ps);
 255
 256    if (!ps)
 257       return;
 258
 259    st_bind_texture_surface(ps, target == GL_TEXTURE_2D ? ST_TEXTURE_2D :
 260                            ST_TEXTURE_RECT, 0, drawable->color_format);
 261 }
 262
 263 void dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
 264                          __DRIdrawable *dPriv)
 265 {
 266    dri2_set_tex_buffer2(pDRICtx, target, GLX_TEXTURE_FORMAT_RGBA_EXT, dPriv);
 267 }
 268
 269 void
 270 dri_flush_frontbuffer(struct pipe_screen *screen,
 271                       struct pipe_surface *surf, void *context_private)
 272 {
 273    struct dri_context *ctx = (struct dri_context *)context_private;
 274    struct dri_drawable *drawable = dri_drawable(ctx->dPriv);
 275    __DRIdrawable *dri_drawable = ctx->dPriv;
 276    __DRIscreen *dri_screen = ctx->sPriv;
 277
 278    /* XXX Does this function get called with DRI1? */
 279
 280    if (ctx->dPriv == NULL) {
 281       debug_printf("%s: no drawable bound to context\n", __func__);
 282       return;
 283    }
 284
 285 #if 0
 286    /* TODO if rendering to pixmaps is slow enable this code. */
 287    if (drawable->is_pixmap)
 288       return;
 289 #else
 290    (void)drawable;
 291 #endif
 292
 293    (*dri_screen->dri2.loader->flushFrontBuffer)(dri_drawable,
 294                                                 dri_drawable->loaderPrivate);
 295 }
 296
 297 /**
 298  * This is called when we need to set up GL rendering to a new X window.
 299  */
 300 boolean
 301 dri_create_buffer(__DRIscreenPrivate * sPriv,
 302                   __DRIdrawablePrivate * dPriv,
 303                   const __GLcontextModes * visual, boolean isPixmap)
 304 {
 305    struct dri_screen *screen = sPriv->private;
 306    struct dri_drawable *drawable = NULL;
 307    int i;
 308
 309    if (isPixmap)
 310       goto fail;                       /* not implemented */
 311
 312    drawable = CALLOC_STRUCT(dri_drawable);
 313    if (drawable == NULL)
 314       goto fail;
 315
 316    if (visual->redBits == 8) {
 317       if (visual->alphaBits == 8)
 318          drawable->color_format = PIPE_FORMAT_A8R8G8B8_UNORM;
 319       else
 320          drawable->color_format = PIPE_FORMAT_X8R8G8B8_UNORM;
 321    } else {
 322       drawable->color_format = PIPE_FORMAT_R5G6B5_UNORM;
 323    }
 324
 325    switch(visual->depthBits) {
 326    default:
 327    case 0:
 328       drawable->depth_stencil_format = PIPE_FORMAT_NONE;
 329       break;
 330    case 16:
 331       drawable->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 332       break;
 333    case 24:
 334       if (visual->stencilBits == 0) {
 335          drawable->depth_stencil_format = (screen->d_depth_bits_last) ?
 336             PIPE_FORMAT_X8Z24_UNORM:
 337             PIPE_FORMAT_Z24X8_UNORM;
 338       } else {
 339          drawable->depth_stencil_format = (screen->sd_depth_bits_last) ?
 340             PIPE_FORMAT_S8Z24_UNORM:
 341             PIPE_FORMAT_Z24S8_UNORM;
 342       }
 343       break;
 344    case 32:
 345       drawable->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 346       break;
 347    }
 348
 349    drawable->stfb = st_create_framebuffer(visual,
 350                                           drawable->color_format,
 351                                           drawable->depth_stencil_format,
 352                                           drawable->depth_stencil_format,
 353                                           dPriv->w,
 354                                           dPriv->h, (void *)drawable);
 355    if (drawable->stfb == NULL)
 356       goto fail;
 357
 358    drawable->sPriv = sPriv;
 359    drawable->dPriv = dPriv;
 360    dPriv->driverPrivate = (void *)drawable;
 361
 362    /* setup dri2 buffers information */
 363    /* TODO incase of double buffer visual, delay fake creation */
 364    i = 0;
 365    drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 366
 367    if (visual->doubleBufferMode)
 368       drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 369    if (visual->depthBits && visual->stencilBits)
 370       drawable->attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 371    else if (visual->depthBits)
 372       drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
 373    else if (visual->stencilBits)
 374       drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
 375    drawable->num_attachments = i;
 376
 377    drawable->desired_fences = 2;
 378
 379    return GL_TRUE;
 380  fail:
 381    FREE(drawable);
 382    return GL_FALSE;
 383 }
 384
 385 static struct pipe_fence_handle *
 386 dri_swap_fences_pop_front(struct dri_drawable *draw)
 387 {
 388    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 389    struct pipe_fence_handle *fence = NULL;
 390
 391    if (draw->cur_fences >= draw->desired_fences) {
 392       screen->fence_reference(screen, &fence, draw->swap_fences[draw->tail]);
 393       screen->fence_reference(screen, &draw->swap_fences[draw->tail++], NULL);
 394       --draw->cur_fences;
 395       draw->tail &= DRI_SWAP_FENCES_MASK;
 396    }
 397    return fence;
 398 }
 399
 400 static void
 401 dri_swap_fences_push_back(struct dri_drawable *draw,
 402                           struct pipe_fence_handle *fence)
 403 {
 404    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 405
 406    if (!fence)
 407       return;
 408
 409    if (draw->cur_fences < DRI_SWAP_FENCES_MAX) {
 410       draw->cur_fences++;
 411       screen->fence_reference(screen, &draw->swap_fences[draw->head++],
 412                               fence);
 413       draw->head &= DRI_SWAP_FENCES_MASK;
 414    }
 415 }
 416
 417 void
 418 dri_destroy_buffer(__DRIdrawablePrivate * dPriv)
 419 {
 420    struct dri_drawable *drawable = dri_drawable(dPriv);
 421    struct pipe_fence_handle *fence;
 422    struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
 423
 424    st_unreference_framebuffer(drawable->stfb);
 425    drawable->desired_fences = 0;
 426    while (drawable->cur_fences) {
 427       fence = dri_swap_fences_pop_front(drawable);
 428       screen->fence_reference(screen, &fence, NULL);
 429    }
 430
 431    FREE(drawable);
 432 }
 433
 434 static void
 435 dri1_update_drawables_locked(struct dri_context *ctx,
 436                              __DRIdrawablePrivate * driDrawPriv,
 437                              __DRIdrawablePrivate * driReadPriv)
 438 {
 439    if (ctx->stLostLock) {
 440       ctx->stLostLock = FALSE;
 441       if (driDrawPriv == driReadPriv)
 442          DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
 443       else
 444          DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
 445                                          driReadPriv);
 446    }
 447 }
 448
 449 /**
 450  * This ensures all contexts which bind to a drawable pick up the
 451  * drawable change and signal new buffer state.
 452  * Calling st_resize_framebuffer for each context may seem like overkill,
 453  * but no new buffers will actually be allocated if the dimensions don't
 454  * change.
 455  */
 456
 457 static void
 458 dri1_propagate_drawable_change(struct dri_context *ctx)
 459 {
 460    __DRIdrawablePrivate *dPriv = ctx->dPriv;
 461    __DRIdrawablePrivate *rPriv = ctx->rPriv;
 462    boolean flushed = FALSE;
 463
 464    if (dPriv && ctx->d_stamp != dPriv->lastStamp) {
 465
 466       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 467       flushed = TRUE;
 468       ctx->d_stamp = dPriv->lastStamp;
 469       st_resize_framebuffer(dri_drawable(dPriv)->stfb, dPriv->w, dPriv->h);
 470
 471    }
 472
 473    if (rPriv && dPriv != rPriv && ctx->r_stamp != rPriv->lastStamp) {
 474
 475       if (!flushed)
 476          st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 477       ctx->r_stamp = rPriv->lastStamp;
 478       st_resize_framebuffer(dri_drawable(rPriv)->stfb, rPriv->w, rPriv->h);
 479
 480    } else if (rPriv && dPriv == rPriv) {
 481
 482       ctx->r_stamp = ctx->d_stamp;
 483
 484    }
 485 }
 486
 487 void
 488 dri1_update_drawables(struct dri_context *ctx,
 489                       struct dri_drawable *draw, struct dri_drawable *read)
 490 {
 491    dri_lock(ctx);
 492    dri1_update_drawables_locked(ctx, draw->dPriv, read->dPriv);
 493    dri_unlock(ctx);
 494
 495    dri1_propagate_drawable_change(ctx);
 496 }
 497
 498 static INLINE boolean
 499 dri1_intersect_src_bbox(struct drm_clip_rect *dst,
 500                         int dst_x,
 501                         int dst_y,
 502                         const struct drm_clip_rect *src,
 503                         const struct drm_clip_rect *bbox)
 504 {
 505    int xy1;
 506    int xy2;
 507
 508    xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
 509       (int)bbox->x1 + dst_x;
 510    xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
 511       (int)bbox->x2 + dst_x;
 512    if (xy1 >= xy2 || xy1 < 0)
 513       return FALSE;
 514
 515    dst->x1 = xy1;
 516    dst->x2 = xy2;
 517
 518    xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
 519       (int)bbox->y1 + dst_y;
 520    xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
 521       (int)bbox->y2 + dst_y;
 522    if (xy1 >= xy2 || xy1 < 0)
 523       return FALSE;
 524
 525    dst->y1 = xy1;
 526    dst->y2 = xy2;
 527    return TRUE;
 528 }
 529
 530 static void
 531 dri1_swap_copy(struct dri_context *ctx,
 532                struct pipe_surface *dst,
 533                struct pipe_surface *src,
 534                __DRIdrawablePrivate * dPriv, const struct drm_clip_rect *bbox)
 535 {
 536    struct pipe_context *pipe = ctx->pipe;
 537    struct drm_clip_rect clip;
 538    struct drm_clip_rect *cur;
 539    int i;
 540
 541    cur = dPriv->pClipRects;
 542
 543    for (i = 0; i < dPriv->numClipRects; ++i) {
 544       if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox)) {
 545          if (pipe->surface_copy) {
 546             pipe->surface_copy(pipe, dst, clip.x1, clip.y1,
 547                                src,
 548                                (int)clip.x1 - dPriv->x,
 549                                (int)clip.y1 - dPriv->y,
 550                                clip.x2 - clip.x1, clip.y2 - clip.y1);
 551          } else {
 552             util_surface_copy(pipe, FALSE, dst, clip.x1, clip.y1,
 553                               src,
 554                               (int)clip.x1 - dPriv->x,
 555                               (int)clip.y1 - dPriv->y,
 556                               clip.x2 - clip.x1, clip.y2 - clip.y1);
 557          }
 558       }
 559    }
 560 }
 561
 562 static void
 563 dri1_copy_to_front(struct dri_context *ctx,
 564                    struct pipe_surface *surf,
 565                    __DRIdrawablePrivate * dPriv,
 566                    const struct drm_clip_rect *sub_box,
 567                    struct pipe_fence_handle **fence)
 568 {
 569    struct pipe_context *pipe = ctx->pipe;
 570    boolean save_lost_lock;
 571    uint cur_w;
 572    uint cur_h;
 573    struct drm_clip_rect bbox;
 574    boolean visible = TRUE;
 575
 576    *fence = NULL;
 577
 578    dri_lock(ctx);
 579    save_lost_lock = ctx->stLostLock;
 580    dri1_update_drawables_locked(ctx, dPriv, dPriv);
 581    st_get_framebuffer_dimensions(dri_drawable(dPriv)->stfb, &cur_w, &cur_h);
 582
 583    bbox.x1 = 0;
 584    bbox.x2 = cur_w;
 585    bbox.y1 = 0;
 586    bbox.y2 = cur_h;
 587
 588    if (sub_box)
 589       visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
 590
 591    if (visible && __dri1_api_hooks->present_locked) {
 592
 593       __dri1_api_hooks->present_locked(pipe,
 594                                        surf,
 595                                        dPriv->pClipRects,
 596                                        dPriv->numClipRects,
 597                                        dPriv->x, dPriv->y, &bbox, fence);
 598
 599    } else if (visible && __dri1_api_hooks->front_srf_locked) {
 600
 601       struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);
 602
 603       if (front)
 604          dri1_swap_copy(ctx, front, surf, dPriv, &bbox);
 605
 606       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, fence);
 607    }
 608
 609    ctx->stLostLock = save_lost_lock;
 610
 611    /**
 612     * FIXME: Revisit this: Update drawables on copy_sub_buffer ?
 613     */
 614
 615    if (!sub_box)
 616       dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);
 617
 618    dri_unlock(ctx);
 619    dri1_propagate_drawable_change(ctx);
 620 }
 621
 622 void
 623 dri1_flush_frontbuffer(struct pipe_screen *screen,
 624                        struct pipe_surface *surf, void *context_private)
 625 {
 626    struct dri_context *ctx = (struct dri_context *)context_private;
 627    struct pipe_fence_handle *dummy_fence;
 628
 629    dri1_copy_to_front(ctx, surf, ctx->dPriv, NULL, &dummy_fence);
 630    screen->fence_reference(screen, &dummy_fence, NULL);
 631
 632    /**
 633     * FIXME: Do we need swap throttling here?
 634     */
 635 }
 636
 637 void
 638 dri_swap_buffers(__DRIdrawablePrivate * dPriv)
 639 {
 640    struct dri_context *ctx;
 641    struct pipe_surface *back_surf;
 642    struct dri_drawable *draw = dri_drawable(dPriv);
 643    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 644    struct pipe_fence_handle *fence;
 645    struct st_context *st = st_get_current();
 646
 647    assert(__dri1_api_hooks != NULL);
 648
 649    if (!st)
 650       return;                          /* For now */
 651
 652    ctx = (struct dri_context *)st->pipe->priv;
 653
 654    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 655    if (back_surf) {
 656       st_notify_swapbuffers(draw->stfb);
 657       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 658       fence = dri_swap_fences_pop_front(draw);
 659       if (fence) {
 660          (void)screen->fence_finish(screen, fence, 0);
 661          screen->fence_reference(screen, &fence, NULL);
 662       }
 663       dri1_copy_to_front(ctx, back_surf, dPriv, NULL, &fence);
 664       dri_swap_fences_push_back(draw, fence);
 665       screen->fence_reference(screen, &fence, NULL);
 666    }
 667 }
 668
 669 void
 670 dri_copy_sub_buffer(__DRIdrawablePrivate * dPriv, int x, int y, int w, int h)
 671 {
 672    struct pipe_screen *screen = dri_screen(dPriv->driScreenPriv)->pipe_screen;
 673    struct drm_clip_rect sub_bbox;
 674    struct dri_context *ctx;
 675    struct pipe_surface *back_surf;
 676    struct dri_drawable *draw = dri_drawable(dPriv);
 677    struct pipe_fence_handle *dummy_fence;
 678    struct st_context *st = st_get_current();
 679
 680    assert(__dri1_api_hooks != NULL);
 681
 682    if (!st)
 683       return;
 684
 685    ctx = (struct dri_context *)st->pipe->priv;
 686
 687    sub_bbox.x1 = x;
 688    sub_bbox.x2 = x + w;
 689    sub_bbox.y1 = y;
 690    sub_bbox.y2 = y + h;
 691
 692    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 693    if (back_surf) {
 694       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 695       dri1_copy_to_front(ctx, back_surf, dPriv, &sub_bbox, &dummy_fence);
 696       screen->fence_reference(screen, &dummy_fence, NULL);
 697    }
 698 }
 699
 700 /* vim: set sw=3 ts=8 sts=3 expandtab: */