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