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_format.h"
  48 #include "util/u_memory.h"
  49 #include "util/u_rect.h"
  50
  51 static struct pipe_surface *
  52 dri_surface_from_handle(struct drm_api *api,
  53                         struct pipe_screen *screen,
  54                         unsigned handle,
  55                         enum pipe_format format,
  56                         unsigned width, unsigned height, unsigned pitch)
  57 {
  58    struct pipe_surface *surface = NULL;
  59    struct pipe_texture *texture = NULL;
  60    struct pipe_texture templat;
  61
  62    memset(&templat, 0, sizeof(templat));
  63    templat.tex_usage |= PIPE_TEXTURE_USAGE_RENDER_TARGET;
  64    templat.target = PIPE_TEXTURE_2D;
  65    templat.last_level = 0;
  66    templat.depth0 = 1;
  67    templat.format = format;
  68    templat.width0 = width;
  69    templat.height0 = height;
  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       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 184          index = ST_SURFACE_FRONT_LEFT;
 185          format = drawable->color_format;
 186          break;
 187       case __DRI_BUFFER_BACK_LEFT:
 188          index = ST_SURFACE_BACK_LEFT;
 189          format = drawable->color_format;
 190          break;
 191       case __DRI_BUFFER_DEPTH:
 192       case __DRI_BUFFER_DEPTH_STENCIL:
 193       case __DRI_BUFFER_STENCIL:
 194          index = ST_SURFACE_DEPTH;
 195          format = drawable->depth_stencil_format;
 196          break;
 197       case __DRI_BUFFER_ACCUM:
 198       default:
 199          assert(0);
 200       }
 201
 202       if (index == ST_SURFACE_DEPTH) {
 203          if (have_depth)
 204             continue;
 205          else
 206             have_depth = TRUE;
 207       }
 208
 209       surface = dri_surface_from_handle(api,
 210                                         screen,
 211                                         buffers[i].name,
 212                                         format,
 213                                         dri_drawable->w,
 214                                         dri_drawable->h, buffers[i].pitch);
 215
 216       switch (buffers[i].attachment) {
 217       case __DRI_BUFFER_FRONT_LEFT:
 218       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 219       case __DRI_BUFFER_BACK_LEFT:
 220          drawable->color_format = surface->format;
 221          break;
 222       case __DRI_BUFFER_DEPTH:
 223       case __DRI_BUFFER_DEPTH_STENCIL:
 224       case __DRI_BUFFER_STENCIL:
 225          drawable->depth_stencil_format = surface->format;
 226          break;
 227       case __DRI_BUFFER_ACCUM:
 228       default:
 229          assert(0);
 230       }
 231
 232       st_set_framebuffer_surface(drawable->stfb, index, surface);
 233       pipe_surface_reference(&surface, NULL);
 234    }
 235    /* this needed, or else the state tracker fails to pick the new buffers */
 236    st_resize_framebuffer(drawable->stfb, dri_drawable->w, dri_drawable->h);
 237 }
 238
 239 /**
 240  * These are used for GLX_EXT_texture_from_pixmap
 241  */
 242 void dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
 243                           GLint format, __DRIdrawable *dPriv)
 244 {
 245    struct dri_drawable *drawable = dri_drawable(dPriv);
 246    struct pipe_surface *ps;
 247
 248    if (!drawable->stfb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer) {
 249       struct gl_renderbuffer *rb =
 250          st_new_renderbuffer_fb(drawable->color_format, 0 /*XXX*/, FALSE);
 251       _mesa_add_renderbuffer(&drawable->stfb->Base, BUFFER_FRONT_LEFT, rb);
 252    }
 253
 254    dri_get_buffers(drawable->dPriv);
 255    st_get_framebuffer_surface(drawable->stfb, ST_SURFACE_FRONT_LEFT, &ps);
 256
 257    if (!ps)
 258       return;
 259
 260    st_bind_texture_surface(ps, target == GL_TEXTURE_2D ? ST_TEXTURE_2D :
 261                            ST_TEXTURE_RECT, 0, drawable->color_format);
 262 }
 263
 264 void dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
 265                          __DRIdrawable *dPriv)
 266 {
 267    dri2_set_tex_buffer2(pDRICtx, target, GLX_TEXTURE_FORMAT_RGBA_EXT, dPriv);
 268 }
 269
 270 void
 271 dri_flush_frontbuffer(struct pipe_screen *screen,
 272                       struct pipe_surface *surf, void *context_private)
 273 {
 274    struct dri_context *ctx = (struct dri_context *)context_private;
 275    struct dri_drawable *drawable = dri_drawable(ctx->dPriv);
 276    __DRIdrawable *dri_drawable = ctx->dPriv;
 277    __DRIscreen *dri_screen = ctx->sPriv;
 278
 279    /* XXX Does this function get called with DRI1? */
 280
 281    if (ctx->dPriv == NULL) {
 282       debug_printf("%s: no drawable bound to context\n", __func__);
 283       return;
 284    }
 285
 286 #if 0
 287    /* TODO if rendering to pixmaps is slow enable this code. */
 288    if (drawable->is_pixmap)
 289       return;
 290 #else
 291    (void)drawable;
 292 #endif
 293
 294    (*dri_screen->dri2.loader->flushFrontBuffer)(dri_drawable,
 295                                                 dri_drawable->loaderPrivate);
 296 }
 297
 298 /**
 299  * This is called when we need to set up GL rendering to a new X window.
 300  */
 301 boolean
 302 dri_create_buffer(__DRIscreenPrivate * sPriv,
 303                   __DRIdrawablePrivate * dPriv,
 304                   const __GLcontextModes * visual, boolean isPixmap)
 305 {
 306    struct dri_screen *screen = sPriv->private;
 307    struct dri_drawable *drawable = NULL;
 308    int i;
 309
 310    if (isPixmap)
 311       goto fail;                       /* not implemented */
 312
 313    drawable = CALLOC_STRUCT(dri_drawable);
 314    if (drawable == NULL)
 315       goto fail;
 316
 317    if (visual->redBits == 8) {
 318       if (visual->alphaBits == 8)
 319          drawable->color_format = PIPE_FORMAT_A8R8G8B8_UNORM;
 320       else
 321          drawable->color_format = PIPE_FORMAT_X8R8G8B8_UNORM;
 322    } else {
 323       drawable->color_format = PIPE_FORMAT_R5G6B5_UNORM;
 324    }
 325
 326    switch(visual->depthBits) {
 327    default:
 328    case 0:
 329       drawable->depth_stencil_format = PIPE_FORMAT_NONE;
 330       break;
 331    case 16:
 332       drawable->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 333       break;
 334    case 24:
 335       if (visual->stencilBits == 0) {
 336          drawable->depth_stencil_format = (screen->d_depth_bits_last) ?
 337             PIPE_FORMAT_X8Z24_UNORM:
 338             PIPE_FORMAT_Z24X8_UNORM;
 339       } else {
 340          drawable->depth_stencil_format = (screen->sd_depth_bits_last) ?
 341             PIPE_FORMAT_S8Z24_UNORM:
 342             PIPE_FORMAT_Z24S8_UNORM;
 343       }
 344       break;
 345    case 32:
 346       drawable->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 347       break;
 348    }
 349
 350    drawable->stfb = st_create_framebuffer(visual,
 351                                           drawable->color_format,
 352                                           drawable->depth_stencil_format,
 353                                           drawable->depth_stencil_format,
 354                                           dPriv->w,
 355                                           dPriv->h, (void *)drawable);
 356    if (drawable->stfb == NULL)
 357       goto fail;
 358
 359    drawable->sPriv = sPriv;
 360    drawable->dPriv = dPriv;
 361    dPriv->driverPrivate = (void *)drawable;
 362
 363    /* setup dri2 buffers information */
 364    /* TODO incase of double buffer visual, delay fake creation */
 365    i = 0;
 366    drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 367
 368    if (visual->doubleBufferMode)
 369       drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 370    if (visual->depthBits && visual->stencilBits)
 371       drawable->attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 372    else if (visual->depthBits)
 373       drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
 374    else if (visual->stencilBits)
 375       drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
 376    drawable->num_attachments = i;
 377
 378    drawable->desired_fences = 2;
 379
 380    return GL_TRUE;
 381  fail:
 382    FREE(drawable);
 383    return GL_FALSE;
 384 }
 385
 386 static struct pipe_fence_handle *
 387 dri_swap_fences_pop_front(struct dri_drawable *draw)
 388 {
 389    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 390    struct pipe_fence_handle *fence = NULL;
 391
 392    if (draw->cur_fences >= draw->desired_fences) {
 393       screen->fence_reference(screen, &fence, draw->swap_fences[draw->tail]);
 394       screen->fence_reference(screen, &draw->swap_fences[draw->tail++], NULL);
 395       --draw->cur_fences;
 396       draw->tail &= DRI_SWAP_FENCES_MASK;
 397    }
 398    return fence;
 399 }
 400
 401 static void
 402 dri_swap_fences_push_back(struct dri_drawable *draw,
 403                           struct pipe_fence_handle *fence)
 404 {
 405    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 406
 407    if (!fence)
 408       return;
 409
 410    if (draw->cur_fences < DRI_SWAP_FENCES_MAX) {
 411       draw->cur_fences++;
 412       screen->fence_reference(screen, &draw->swap_fences[draw->head++],
 413                               fence);
 414       draw->head &= DRI_SWAP_FENCES_MASK;
 415    }
 416 }
 417
 418 void
 419 dri_destroy_buffer(__DRIdrawablePrivate * dPriv)
 420 {
 421    struct dri_drawable *drawable = dri_drawable(dPriv);
 422    struct pipe_fence_handle *fence;
 423    struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
 424
 425    st_unreference_framebuffer(drawable->stfb);
 426    drawable->desired_fences = 0;
 427    while (drawable->cur_fences) {
 428       fence = dri_swap_fences_pop_front(drawable);
 429       screen->fence_reference(screen, &fence, NULL);
 430    }
 431
 432    FREE(drawable);
 433 }
 434
 435 static void
 436 dri1_update_drawables_locked(struct dri_context *ctx,
 437                              __DRIdrawablePrivate * driDrawPriv,
 438                              __DRIdrawablePrivate * driReadPriv)
 439 {
 440    if (ctx->stLostLock) {
 441       ctx->stLostLock = FALSE;
 442       if (driDrawPriv == driReadPriv)
 443          DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
 444       else
 445          DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
 446                                          driReadPriv);
 447    }
 448 }
 449
 450 /**
 451  * This ensures all contexts which bind to a drawable pick up the
 452  * drawable change and signal new buffer state.
 453  * Calling st_resize_framebuffer for each context may seem like overkill,
 454  * but no new buffers will actually be allocated if the dimensions don't
 455  * change.
 456  */
 457
 458 static void
 459 dri1_propagate_drawable_change(struct dri_context *ctx)
 460 {
 461    __DRIdrawablePrivate *dPriv = ctx->dPriv;
 462    __DRIdrawablePrivate *rPriv = ctx->rPriv;
 463    boolean flushed = FALSE;
 464
 465    if (dPriv && ctx->d_stamp != dPriv->lastStamp) {
 466
 467       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 468       flushed = TRUE;
 469       ctx->d_stamp = dPriv->lastStamp;
 470       st_resize_framebuffer(dri_drawable(dPriv)->stfb, dPriv->w, dPriv->h);
 471
 472    }
 473
 474    if (rPriv && dPriv != rPriv && ctx->r_stamp != rPriv->lastStamp) {
 475
 476       if (!flushed)
 477          st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 478       ctx->r_stamp = rPriv->lastStamp;
 479       st_resize_framebuffer(dri_drawable(rPriv)->stfb, rPriv->w, rPriv->h);
 480
 481    } else if (rPriv && dPriv == rPriv) {
 482
 483       ctx->r_stamp = ctx->d_stamp;
 484
 485    }
 486 }
 487
 488 void
 489 dri1_update_drawables(struct dri_context *ctx,
 490                       struct dri_drawable *draw, struct dri_drawable *read)
 491 {
 492    dri_lock(ctx);
 493    dri1_update_drawables_locked(ctx, draw->dPriv, read->dPriv);
 494    dri_unlock(ctx);
 495
 496    dri1_propagate_drawable_change(ctx);
 497 }
 498
 499 static INLINE boolean
 500 dri1_intersect_src_bbox(struct drm_clip_rect *dst,
 501                         int dst_x,
 502                         int dst_y,
 503                         const struct drm_clip_rect *src,
 504                         const struct drm_clip_rect *bbox)
 505 {
 506    int xy1;
 507    int xy2;
 508
 509    xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
 510       (int)bbox->x1 + dst_x;
 511    xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
 512       (int)bbox->x2 + dst_x;
 513    if (xy1 >= xy2 || xy1 < 0)
 514       return FALSE;
 515
 516    dst->x1 = xy1;
 517    dst->x2 = xy2;
 518
 519    xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
 520       (int)bbox->y1 + dst_y;
 521    xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
 522       (int)bbox->y2 + dst_y;
 523    if (xy1 >= xy2 || xy1 < 0)
 524       return FALSE;
 525
 526    dst->y1 = xy1;
 527    dst->y2 = xy2;
 528    return TRUE;
 529 }
 530
 531 static void
 532 dri1_swap_copy(struct dri_context *ctx,
 533                struct pipe_surface *dst,
 534                struct pipe_surface *src,
 535                __DRIdrawablePrivate * dPriv, const struct drm_clip_rect *bbox)
 536 {
 537    struct pipe_context *pipe = ctx->pipe;
 538    struct drm_clip_rect clip;
 539    struct drm_clip_rect *cur;
 540    int i;
 541
 542    cur = dPriv->pClipRects;
 543
 544    for (i = 0; i < dPriv->numClipRects; ++i) {
 545       if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox)) {
 546          if (pipe->surface_copy) {
 547             pipe->surface_copy(pipe, dst, clip.x1, clip.y1,
 548                                src,
 549                                (int)clip.x1 - dPriv->x,
 550                                (int)clip.y1 - dPriv->y,
 551                                clip.x2 - clip.x1, clip.y2 - clip.y1);
 552          } else {
 553             util_surface_copy(pipe, FALSE, dst, clip.x1, clip.y1,
 554                               src,
 555                               (int)clip.x1 - dPriv->x,
 556                               (int)clip.y1 - dPriv->y,
 557                               clip.x2 - clip.x1, clip.y2 - clip.y1);
 558          }
 559       }
 560    }
 561 }
 562
 563 static void
 564 dri1_copy_to_front(struct dri_context *ctx,
 565                    struct pipe_surface *surf,
 566                    __DRIdrawablePrivate * dPriv,
 567                    const struct drm_clip_rect *sub_box,
 568                    struct pipe_fence_handle **fence)
 569 {
 570    struct pipe_context *pipe = ctx->pipe;
 571    boolean save_lost_lock;
 572    uint cur_w;
 573    uint cur_h;
 574    struct drm_clip_rect bbox;
 575    boolean visible = TRUE;
 576
 577    *fence = NULL;
 578
 579    dri_lock(ctx);
 580    save_lost_lock = ctx->stLostLock;
 581    dri1_update_drawables_locked(ctx, dPriv, dPriv);
 582    st_get_framebuffer_dimensions(dri_drawable(dPriv)->stfb, &cur_w, &cur_h);
 583
 584    bbox.x1 = 0;
 585    bbox.x2 = cur_w;
 586    bbox.y1 = 0;
 587    bbox.y2 = cur_h;
 588
 589    if (sub_box)
 590       visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
 591
 592    if (visible && __dri1_api_hooks->present_locked) {
 593
 594       __dri1_api_hooks->present_locked(pipe,
 595                                        surf,
 596                                        dPriv->pClipRects,
 597                                        dPriv->numClipRects,
 598                                        dPriv->x, dPriv->y, &bbox, fence);
 599
 600    } else if (visible && __dri1_api_hooks->front_srf_locked) {
 601
 602       struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);
 603
 604       if (front)
 605          dri1_swap_copy(ctx, front, surf, dPriv, &bbox);
 606
 607       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, fence);
 608    }
 609
 610    ctx->stLostLock = save_lost_lock;
 611
 612    /**
 613     * FIXME: Revisit this: Update drawables on copy_sub_buffer ?
 614     */
 615
 616    if (!sub_box)
 617       dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);
 618
 619    dri_unlock(ctx);
 620    dri1_propagate_drawable_change(ctx);
 621 }
 622
 623 void
 624 dri1_flush_frontbuffer(struct pipe_screen *screen,
 625                        struct pipe_surface *surf, void *context_private)
 626 {
 627    struct dri_context *ctx = (struct dri_context *)context_private;
 628    struct pipe_fence_handle *dummy_fence;
 629
 630    dri1_copy_to_front(ctx, surf, ctx->dPriv, NULL, &dummy_fence);
 631    screen->fence_reference(screen, &dummy_fence, NULL);
 632
 633    /**
 634     * FIXME: Do we need swap throttling here?
 635     */
 636 }
 637
 638 void
 639 dri_swap_buffers(__DRIdrawablePrivate * dPriv)
 640 {
 641    struct dri_context *ctx;
 642    struct pipe_surface *back_surf;
 643    struct dri_drawable *draw = dri_drawable(dPriv);
 644    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 645    struct pipe_fence_handle *fence;
 646    struct st_context *st = st_get_current();
 647
 648    assert(__dri1_api_hooks != NULL);
 649
 650    if (!st)
 651       return;                          /* For now */
 652
 653    ctx = (struct dri_context *)st->pipe->priv;
 654
 655    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 656    if (back_surf) {
 657       st_notify_swapbuffers(draw->stfb);
 658       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 659       fence = dri_swap_fences_pop_front(draw);
 660       if (fence) {
 661          (void)screen->fence_finish(screen, fence, 0);
 662          screen->fence_reference(screen, &fence, NULL);
 663       }
 664       dri1_copy_to_front(ctx, back_surf, dPriv, NULL, &fence);
 665       dri_swap_fences_push_back(draw, fence);
 666       screen->fence_reference(screen, &fence, NULL);
 667    }
 668 }
 669
 670 void
 671 dri_copy_sub_buffer(__DRIdrawablePrivate * dPriv, int x, int y, int w, int h)
 672 {
 673    struct pipe_screen *screen = dri_screen(dPriv->driScreenPriv)->pipe_screen;
 674    struct drm_clip_rect sub_bbox;
 675    struct dri_context *ctx;
 676    struct pipe_surface *back_surf;
 677    struct dri_drawable *draw = dri_drawable(dPriv);
 678    struct pipe_fence_handle *dummy_fence;
 679    struct st_context *st = st_get_current();
 680
 681    assert(__dri1_api_hooks != NULL);
 682
 683    if (!st)
 684       return;
 685
 686    ctx = (struct dri_context *)st->pipe->priv;
 687
 688    sub_bbox.x1 = x;
 689    sub_bbox.x2 = x + w;
 690    sub_bbox.y1 = y;
 691    sub_bbox.y2 = y + h;
 692
 693    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 694    if (back_surf) {
 695       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 696       dri1_copy_to_front(ctx, back_surf, dPriv, &sub_bbox, &dummy_fence);
 697       screen->fence_reference(screen, &dummy_fence, NULL);
 698    }
 699 }
 700
 701 /* vim: set sw=3 ts=8 sts=3 expandtab: */