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(__DRIdrawable * 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_update_buffer(struct pipe_screen *screen, void *context_private)
 273 {
 274    struct dri_context *ctx = (struct dri_context *)context_private;
 275
 276    dri_get_buffers(ctx->dPriv);
 277 }
 278
 279 void
 280 dri_flush_frontbuffer(struct pipe_screen *screen,
 281                       struct pipe_surface *surf, void *context_private)
 282 {
 283    struct dri_context *ctx = (struct dri_context *)context_private;
 284    struct dri_drawable *drawable = dri_drawable(ctx->dPriv);
 285    __DRIdrawable *dri_drawable = ctx->dPriv;
 286    __DRIscreen *dri_screen = ctx->sPriv;
 287
 288    /* XXX Does this function get called with DRI1? */
 289
 290    if (ctx->dPriv == NULL) {
 291       debug_printf("%s: no drawable bound to context\n", __func__);
 292       return;
 293    }
 294
 295 #if 0
 296    /* TODO if rendering to pixmaps is slow enable this code. */
 297    if (drawable->is_pixmap)
 298       return;
 299 #else
 300    (void)drawable;
 301 #endif
 302
 303    (*dri_screen->dri2.loader->flushFrontBuffer)(dri_drawable,
 304                                                 dri_drawable->loaderPrivate);
 305 }
 306
 307 /**
 308  * This is called when we need to set up GL rendering to a new X window.
 309  */
 310 boolean
 311 dri_create_buffer(__DRIscreen * sPriv,
 312                   __DRIdrawable * dPriv,
 313                   const __GLcontextModes * visual, boolean isPixmap)
 314 {
 315    struct dri_screen *screen = sPriv->private;
 316    struct dri_drawable *drawable = NULL;
 317    int i;
 318
 319    if (isPixmap)
 320       goto fail;                       /* not implemented */
 321
 322    drawable = CALLOC_STRUCT(dri_drawable);
 323    if (drawable == NULL)
 324       goto fail;
 325
 326    if (visual->redBits == 8) {
 327       if (visual->alphaBits == 8)
 328          drawable->color_format = PIPE_FORMAT_A8R8G8B8_UNORM;
 329       else
 330          drawable->color_format = PIPE_FORMAT_X8R8G8B8_UNORM;
 331    } else {
 332       drawable->color_format = PIPE_FORMAT_R5G6B5_UNORM;
 333    }
 334
 335    switch(visual->depthBits) {
 336    default:
 337    case 0:
 338       drawable->depth_stencil_format = PIPE_FORMAT_NONE;
 339       break;
 340    case 16:
 341       drawable->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 342       break;
 343    case 24:
 344       if (visual->stencilBits == 0) {
 345          drawable->depth_stencil_format = (screen->d_depth_bits_last) ?
 346             PIPE_FORMAT_X8Z24_UNORM:
 347             PIPE_FORMAT_Z24X8_UNORM;
 348       } else {
 349          drawable->depth_stencil_format = (screen->sd_depth_bits_last) ?
 350             PIPE_FORMAT_S8Z24_UNORM:
 351             PIPE_FORMAT_Z24S8_UNORM;
 352       }
 353       break;
 354    case 32:
 355       drawable->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 356       break;
 357    }
 358
 359    drawable->stfb = st_create_framebuffer(visual,
 360                                           drawable->color_format,
 361                                           drawable->depth_stencil_format,
 362                                           drawable->depth_stencil_format,
 363                                           dPriv->w,
 364                                           dPriv->h, (void *)drawable);
 365    if (drawable->stfb == NULL)
 366       goto fail;
 367
 368    drawable->sPriv = sPriv;
 369    drawable->dPriv = dPriv;
 370    dPriv->driverPrivate = (void *)drawable;
 371
 372    /* setup dri2 buffers information */
 373    /* TODO incase of double buffer visual, delay fake creation */
 374    i = 0;
 375    drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 376    drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
 377
 378    if (visual->doubleBufferMode)
 379       drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 380    if (visual->depthBits && visual->stencilBits)
 381       drawable->attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 382    else if (visual->depthBits)
 383       drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
 384    else if (visual->stencilBits)
 385       drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
 386    drawable->num_attachments = i;
 387
 388    drawable->desired_fences = 2;
 389
 390    return GL_TRUE;
 391  fail:
 392    FREE(drawable);
 393    return GL_FALSE;
 394 }
 395
 396 static struct pipe_fence_handle *
 397 dri_swap_fences_pop_front(struct dri_drawable *draw)
 398 {
 399    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 400    struct pipe_fence_handle *fence = NULL;
 401
 402    if (draw->cur_fences >= draw->desired_fences) {
 403       screen->fence_reference(screen, &fence, draw->swap_fences[draw->tail]);
 404       screen->fence_reference(screen, &draw->swap_fences[draw->tail++], NULL);
 405       --draw->cur_fences;
 406       draw->tail &= DRI_SWAP_FENCES_MASK;
 407    }
 408    return fence;
 409 }
 410
 411 static void
 412 dri_swap_fences_push_back(struct dri_drawable *draw,
 413                           struct pipe_fence_handle *fence)
 414 {
 415    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 416
 417    if (!fence)
 418       return;
 419
 420    if (draw->cur_fences < DRI_SWAP_FENCES_MAX) {
 421       draw->cur_fences++;
 422       screen->fence_reference(screen, &draw->swap_fences[draw->head++],
 423                               fence);
 424       draw->head &= DRI_SWAP_FENCES_MASK;
 425    }
 426 }
 427
 428 void
 429 dri_destroy_buffer(__DRIdrawable * dPriv)
 430 {
 431    struct dri_drawable *drawable = dri_drawable(dPriv);
 432    struct pipe_fence_handle *fence;
 433    struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
 434
 435    st_unreference_framebuffer(drawable->stfb);
 436    drawable->desired_fences = 0;
 437    while (drawable->cur_fences) {
 438       fence = dri_swap_fences_pop_front(drawable);
 439       screen->fence_reference(screen, &fence, NULL);
 440    }
 441
 442    FREE(drawable);
 443 }
 444
 445 static void
 446 dri1_update_drawables_locked(struct dri_context *ctx,
 447                              __DRIdrawable * driDrawPriv,
 448                              __DRIdrawable * driReadPriv)
 449 {
 450    if (ctx->stLostLock) {
 451       ctx->stLostLock = FALSE;
 452       if (driDrawPriv == driReadPriv)
 453          DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
 454       else
 455          DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
 456                                          driReadPriv);
 457    }
 458 }
 459
 460 /**
 461  * This ensures all contexts which bind to a drawable pick up the
 462  * drawable change and signal new buffer state.
 463  * Calling st_resize_framebuffer for each context may seem like overkill,
 464  * but no new buffers will actually be allocated if the dimensions don't
 465  * change.
 466  */
 467
 468 static void
 469 dri1_propagate_drawable_change(struct dri_context *ctx)
 470 {
 471    __DRIdrawable *dPriv = ctx->dPriv;
 472    __DRIdrawable *rPriv = ctx->rPriv;
 473    boolean flushed = FALSE;
 474
 475    if (dPriv && ctx->d_stamp != dPriv->lastStamp) {
 476
 477       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 478       flushed = TRUE;
 479       ctx->d_stamp = dPriv->lastStamp;
 480       st_resize_framebuffer(dri_drawable(dPriv)->stfb, dPriv->w, dPriv->h);
 481
 482    }
 483
 484    if (rPriv && dPriv != rPriv && ctx->r_stamp != rPriv->lastStamp) {
 485
 486       if (!flushed)
 487          st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 488       ctx->r_stamp = rPriv->lastStamp;
 489       st_resize_framebuffer(dri_drawable(rPriv)->stfb, rPriv->w, rPriv->h);
 490
 491    } else if (rPriv && dPriv == rPriv) {
 492
 493       ctx->r_stamp = ctx->d_stamp;
 494
 495    }
 496 }
 497
 498 void
 499 dri1_update_drawables(struct dri_context *ctx,
 500                       struct dri_drawable *draw, struct dri_drawable *read)
 501 {
 502    dri_lock(ctx);
 503    dri1_update_drawables_locked(ctx, draw->dPriv, read->dPriv);
 504    dri_unlock(ctx);
 505
 506    dri1_propagate_drawable_change(ctx);
 507 }
 508
 509 static INLINE boolean
 510 dri1_intersect_src_bbox(struct drm_clip_rect *dst,
 511                         int dst_x,
 512                         int dst_y,
 513                         const struct drm_clip_rect *src,
 514                         const struct drm_clip_rect *bbox)
 515 {
 516    int xy1;
 517    int xy2;
 518
 519    xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
 520       (int)bbox->x1 + dst_x;
 521    xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
 522       (int)bbox->x2 + dst_x;
 523    if (xy1 >= xy2 || xy1 < 0)
 524       return FALSE;
 525
 526    dst->x1 = xy1;
 527    dst->x2 = xy2;
 528
 529    xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
 530       (int)bbox->y1 + dst_y;
 531    xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
 532       (int)bbox->y2 + dst_y;
 533    if (xy1 >= xy2 || xy1 < 0)
 534       return FALSE;
 535
 536    dst->y1 = xy1;
 537    dst->y2 = xy2;
 538    return TRUE;
 539 }
 540
 541 static void
 542 dri1_swap_copy(struct dri_context *ctx,
 543                struct pipe_surface *dst,
 544                struct pipe_surface *src,
 545                __DRIdrawable * dPriv, const struct drm_clip_rect *bbox)
 546 {
 547    struct pipe_context *pipe = ctx->pipe;
 548    struct drm_clip_rect clip;
 549    struct drm_clip_rect *cur;
 550    int i;
 551
 552    cur = dPriv->pClipRects;
 553
 554    for (i = 0; i < dPriv->numClipRects; ++i) {
 555       if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox)) {
 556          if (pipe->surface_copy) {
 557             pipe->surface_copy(pipe, 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          } else {
 563             util_surface_copy(pipe, FALSE, dst, clip.x1, clip.y1,
 564                               src,
 565                               (int)clip.x1 - dPriv->x,
 566                               (int)clip.y1 - dPriv->y,
 567                               clip.x2 - clip.x1, clip.y2 - clip.y1);
 568          }
 569       }
 570    }
 571 }
 572
 573 static void
 574 dri1_copy_to_front(struct dri_context *ctx,
 575                    struct pipe_surface *surf,
 576                    __DRIdrawable * dPriv,
 577                    const struct drm_clip_rect *sub_box,
 578                    struct pipe_fence_handle **fence)
 579 {
 580    struct pipe_context *pipe = ctx->pipe;
 581    boolean save_lost_lock;
 582    uint cur_w;
 583    uint cur_h;
 584    struct drm_clip_rect bbox;
 585    boolean visible = TRUE;
 586
 587    *fence = NULL;
 588
 589    dri_lock(ctx);
 590    save_lost_lock = ctx->stLostLock;
 591    dri1_update_drawables_locked(ctx, dPriv, dPriv);
 592    st_get_framebuffer_dimensions(dri_drawable(dPriv)->stfb, &cur_w, &cur_h);
 593
 594    bbox.x1 = 0;
 595    bbox.x2 = cur_w;
 596    bbox.y1 = 0;
 597    bbox.y2 = cur_h;
 598
 599    if (sub_box)
 600       visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
 601
 602    if (visible && __dri1_api_hooks->present_locked) {
 603
 604       __dri1_api_hooks->present_locked(pipe,
 605                                        surf,
 606                                        dPriv->pClipRects,
 607                                        dPriv->numClipRects,
 608                                        dPriv->x, dPriv->y, &bbox, fence);
 609
 610    } else if (visible && __dri1_api_hooks->front_srf_locked) {
 611
 612       struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);
 613
 614       if (front)
 615          dri1_swap_copy(ctx, front, surf, dPriv, &bbox);
 616
 617       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, fence);
 618    }
 619
 620    ctx->stLostLock = save_lost_lock;
 621
 622    /**
 623     * FIXME: Revisit this: Update drawables on copy_sub_buffer ?
 624     */
 625
 626    if (!sub_box)
 627       dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);
 628
 629    dri_unlock(ctx);
 630    dri1_propagate_drawable_change(ctx);
 631 }
 632
 633 void
 634 dri1_flush_frontbuffer(struct pipe_screen *screen,
 635                        struct pipe_surface *surf, void *context_private)
 636 {
 637    struct dri_context *ctx = (struct dri_context *)context_private;
 638    struct pipe_fence_handle *dummy_fence;
 639
 640    dri1_copy_to_front(ctx, surf, ctx->dPriv, NULL, &dummy_fence);
 641    screen->fence_reference(screen, &dummy_fence, NULL);
 642
 643    /**
 644     * FIXME: Do we need swap throttling here?
 645     */
 646 }
 647
 648 void
 649 dri_swap_buffers(__DRIdrawable * dPriv)
 650 {
 651    struct dri_context *ctx;
 652    struct pipe_surface *back_surf;
 653    struct dri_drawable *draw = dri_drawable(dPriv);
 654    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 655    struct pipe_fence_handle *fence;
 656    struct st_context *st = st_get_current();
 657
 658    assert(__dri1_api_hooks != NULL);
 659
 660    if (!st)
 661       return;                          /* For now */
 662
 663    ctx = (struct dri_context *)st->pipe->priv;
 664
 665    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 666    if (back_surf) {
 667       st_notify_swapbuffers(draw->stfb);
 668       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 669       fence = dri_swap_fences_pop_front(draw);
 670       if (fence) {
 671          (void)screen->fence_finish(screen, fence, 0);
 672          screen->fence_reference(screen, &fence, NULL);
 673       }
 674       dri1_copy_to_front(ctx, back_surf, dPriv, NULL, &fence);
 675       dri_swap_fences_push_back(draw, fence);
 676       screen->fence_reference(screen, &fence, NULL);
 677    }
 678 }
 679
 680 void
 681 dri_copy_sub_buffer(__DRIdrawable * dPriv, int x, int y, int w, int h)
 682 {
 683    struct pipe_screen *screen = dri_screen(dPriv->driScreenPriv)->pipe_screen;
 684    struct drm_clip_rect sub_bbox;
 685    struct dri_context *ctx;
 686    struct pipe_surface *back_surf;
 687    struct dri_drawable *draw = dri_drawable(dPriv);
 688    struct pipe_fence_handle *dummy_fence;
 689    struct st_context *st = st_get_current();
 690
 691    assert(__dri1_api_hooks != NULL);
 692
 693    if (!st)
 694       return;
 695
 696    ctx = (struct dri_context *)st->pipe->priv;
 697
 698    sub_bbox.x1 = x;
 699    sub_bbox.x2 = x + w;
 700    sub_bbox.y1 = y;
 701    sub_bbox.y2 = y + h;
 702
 703    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 704    if (back_surf) {
 705       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 706       dri1_copy_to_front(ctx, back_surf, dPriv, &sub_bbox, &dummy_fence);
 707       screen->fence_reference(screen, &dummy_fence, NULL);
 708    }
 709 }
 710
 711 /* vim: set sw=3 ts=8 sts=3 expandtab: */