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 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          /* fallthrough */
 187       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 188          index = ST_SURFACE_FRONT_LEFT;
 189          format = drawable->color_format;
 190          break;
 191       case __DRI_BUFFER_BACK_LEFT:
 192          index = ST_SURFACE_BACK_LEFT;
 193          format = drawable->color_format;
 194          break;
 195       case __DRI_BUFFER_DEPTH:
 196       case __DRI_BUFFER_DEPTH_STENCIL:
 197       case __DRI_BUFFER_STENCIL:
 198          index = ST_SURFACE_DEPTH;
 199          format = drawable->depth_stencil_format;
 200          break;
 201       case __DRI_BUFFER_ACCUM:
 202       default:
 203          assert(0);
 204       }
 205
 206       if (index == ST_SURFACE_DEPTH) {
 207          if (have_depth)
 208             continue;
 209          else
 210             have_depth = TRUE;
 211       }
 212
 213       surface = dri_surface_from_handle(api,
 214                                         screen,
 215                                         buffers[i].name,
 216                                         format,
 217                                         dri_drawable->w,
 218                                         dri_drawable->h, buffers[i].pitch);
 219
 220       switch (buffers[i].attachment) {
 221       case __DRI_BUFFER_FRONT_LEFT:
 222       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 223       case __DRI_BUFFER_BACK_LEFT:
 224          drawable->color_format = surface->format;
 225          break;
 226       case __DRI_BUFFER_DEPTH:
 227       case __DRI_BUFFER_DEPTH_STENCIL:
 228       case __DRI_BUFFER_STENCIL:
 229          drawable->depth_stencil_format = surface->format;
 230          break;
 231       case __DRI_BUFFER_ACCUM:
 232       default:
 233          assert(0);
 234       }
 235
 236       st_set_framebuffer_surface(drawable->stfb, index, surface);
 237       pipe_surface_reference(&surface, NULL);
 238    }
 239    /* this needed, or else the state tracker fails to pick the new buffers */
 240    st_resize_framebuffer(drawable->stfb, dri_drawable->w, dri_drawable->h);
 241 }
 242
 243 /**
 244  * These are used for GLX_EXT_texture_from_pixmap
 245  */
 246 void dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
 247                           GLint format, __DRIdrawable *dPriv)
 248 {
 249    struct dri_drawable *drawable = dri_drawable(dPriv);
 250    struct pipe_surface *ps;
 251
 252    if (!drawable->stfb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer) {
 253       struct gl_renderbuffer *rb =
 254          st_new_renderbuffer_fb(drawable->color_format, 0 /*XXX*/, FALSE);
 255       _mesa_add_renderbuffer(&drawable->stfb->Base, BUFFER_FRONT_LEFT, rb);
 256    }
 257
 258    dri_get_buffers(drawable->dPriv);
 259    st_get_framebuffer_surface(drawable->stfb, ST_SURFACE_FRONT_LEFT, &ps);
 260
 261    if (!ps)
 262       return;
 263
 264    st_bind_texture_surface(ps, target == GL_TEXTURE_2D ? ST_TEXTURE_2D :
 265                            ST_TEXTURE_RECT, 0, drawable->color_format);
 266 }
 267
 268 void dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
 269                          __DRIdrawable *dPriv)
 270 {
 271    dri2_set_tex_buffer2(pDRICtx, target, GLX_TEXTURE_FORMAT_RGBA_EXT, dPriv);
 272 }
 273
 274 void
 275 dri_update_buffer(struct pipe_screen *screen, void *context_private)
 276 {
 277    struct dri_context *ctx = (struct dri_context *)context_private;
 278
 279    dri_get_buffers(ctx->dPriv);
 280 }
 281
 282 void
 283 dri_flush_frontbuffer(struct pipe_screen *screen,
 284                       struct pipe_surface *surf, void *context_private)
 285 {
 286    struct dri_context *ctx = (struct dri_context *)context_private;
 287    struct dri_drawable *drawable = dri_drawable(ctx->dPriv);
 288    __DRIdrawable *dri_drawable = ctx->dPriv;
 289    __DRIscreen *dri_screen = ctx->sPriv;
 290
 291    /* XXX Does this function get called with DRI1? */
 292
 293    if (ctx->dPriv == NULL) {
 294       debug_printf("%s: no drawable bound to context\n", __func__);
 295       return;
 296    }
 297
 298 #if 0
 299    /* TODO if rendering to pixmaps is slow enable this code. */
 300    if (drawable->is_pixmap)
 301       return;
 302 #else
 303    (void)drawable;
 304 #endif
 305
 306    (*dri_screen->dri2.loader->flushFrontBuffer)(dri_drawable,
 307                                                 dri_drawable->loaderPrivate);
 308 }
 309
 310 /**
 311  * This is called when we need to set up GL rendering to a new X window.
 312  */
 313 boolean
 314 dri_create_buffer(__DRIscreen * sPriv,
 315                   __DRIdrawable * dPriv,
 316                   const __GLcontextModes * visual, boolean isPixmap)
 317 {
 318    struct dri_screen *screen = sPriv->private;
 319    struct dri_drawable *drawable = NULL;
 320    int i;
 321
 322    if (isPixmap)
 323       goto fail;                       /* not implemented */
 324
 325    drawable = CALLOC_STRUCT(dri_drawable);
 326    if (drawable == NULL)
 327       goto fail;
 328
 329    if (visual->redBits == 8) {
 330       if (visual->alphaBits == 8)
 331          drawable->color_format = PIPE_FORMAT_A8R8G8B8_UNORM;
 332       else
 333          drawable->color_format = PIPE_FORMAT_X8R8G8B8_UNORM;
 334    } else {
 335       drawable->color_format = PIPE_FORMAT_R5G6B5_UNORM;
 336    }
 337
 338    switch(visual->depthBits) {
 339    default:
 340    case 0:
 341       drawable->depth_stencil_format = PIPE_FORMAT_NONE;
 342       break;
 343    case 16:
 344       drawable->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 345       break;
 346    case 24:
 347       if (visual->stencilBits == 0) {
 348          drawable->depth_stencil_format = (screen->d_depth_bits_last) ?
 349             PIPE_FORMAT_X8Z24_UNORM:
 350             PIPE_FORMAT_Z24X8_UNORM;
 351       } else {
 352          drawable->depth_stencil_format = (screen->sd_depth_bits_last) ?
 353             PIPE_FORMAT_S8Z24_UNORM:
 354             PIPE_FORMAT_Z24S8_UNORM;
 355       }
 356       break;
 357    case 32:
 358       drawable->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 359       break;
 360    }
 361
 362    drawable->stfb = st_create_framebuffer(visual,
 363                                           drawable->color_format,
 364                                           drawable->depth_stencil_format,
 365                                           drawable->depth_stencil_format,
 366                                           dPriv->w,
 367                                           dPriv->h, (void *)drawable);
 368    if (drawable->stfb == NULL)
 369       goto fail;
 370
 371    drawable->sPriv = sPriv;
 372    drawable->dPriv = dPriv;
 373    dPriv->driverPrivate = (void *)drawable;
 374
 375    /* setup dri2 buffers information */
 376    /* TODO incase of double buffer visual, delay fake creation */
 377    i = 0;
 378    drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 379    if (!screen->auto_fake_front)
 380       drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
 381    if (visual->doubleBufferMode)
 382       drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 383    if (visual->depthBits && visual->stencilBits)
 384       drawable->attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 385    else if (visual->depthBits)
 386       drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
 387    else if (visual->stencilBits)
 388       drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
 389    drawable->num_attachments = i;
 390
 391    drawable->desired_fences = 2;
 392
 393    return GL_TRUE;
 394  fail:
 395    FREE(drawable);
 396    return GL_FALSE;
 397 }
 398
 399 static struct pipe_fence_handle *
 400 dri_swap_fences_pop_front(struct dri_drawable *draw)
 401 {
 402    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 403    struct pipe_fence_handle *fence = NULL;
 404
 405    if (draw->cur_fences >= draw->desired_fences) {
 406       screen->fence_reference(screen, &fence, draw->swap_fences[draw->tail]);
 407       screen->fence_reference(screen, &draw->swap_fences[draw->tail++], NULL);
 408       --draw->cur_fences;
 409       draw->tail &= DRI_SWAP_FENCES_MASK;
 410    }
 411    return fence;
 412 }
 413
 414 static void
 415 dri_swap_fences_push_back(struct dri_drawable *draw,
 416                           struct pipe_fence_handle *fence)
 417 {
 418    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 419
 420    if (!fence)
 421       return;
 422
 423    if (draw->cur_fences < DRI_SWAP_FENCES_MAX) {
 424       draw->cur_fences++;
 425       screen->fence_reference(screen, &draw->swap_fences[draw->head++],
 426                               fence);
 427       draw->head &= DRI_SWAP_FENCES_MASK;
 428    }
 429 }
 430
 431 void
 432 dri_destroy_buffer(__DRIdrawable * dPriv)
 433 {
 434    struct dri_drawable *drawable = dri_drawable(dPriv);
 435    struct pipe_fence_handle *fence;
 436    struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
 437
 438    st_unreference_framebuffer(drawable->stfb);
 439    drawable->desired_fences = 0;
 440    while (drawable->cur_fences) {
 441       fence = dri_swap_fences_pop_front(drawable);
 442       screen->fence_reference(screen, &fence, NULL);
 443    }
 444
 445    FREE(drawable);
 446 }
 447
 448 static void
 449 dri1_update_drawables_locked(struct dri_context *ctx,
 450                              __DRIdrawable * driDrawPriv,
 451                              __DRIdrawable * driReadPriv)
 452 {
 453    if (ctx->stLostLock) {
 454       ctx->stLostLock = FALSE;
 455       if (driDrawPriv == driReadPriv)
 456          DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
 457       else
 458          DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
 459                                          driReadPriv);
 460    }
 461 }
 462
 463 /**
 464  * This ensures all contexts which bind to a drawable pick up the
 465  * drawable change and signal new buffer state.
 466  * Calling st_resize_framebuffer for each context may seem like overkill,
 467  * but no new buffers will actually be allocated if the dimensions don't
 468  * change.
 469  */
 470
 471 static void
 472 dri1_propagate_drawable_change(struct dri_context *ctx)
 473 {
 474    __DRIdrawable *dPriv = ctx->dPriv;
 475    __DRIdrawable *rPriv = ctx->rPriv;
 476    boolean flushed = FALSE;
 477
 478    if (dPriv && ctx->d_stamp != dPriv->lastStamp) {
 479
 480       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 481       flushed = TRUE;
 482       ctx->d_stamp = dPriv->lastStamp;
 483       st_resize_framebuffer(dri_drawable(dPriv)->stfb, dPriv->w, dPriv->h);
 484
 485    }
 486
 487    if (rPriv && dPriv != rPriv && ctx->r_stamp != rPriv->lastStamp) {
 488
 489       if (!flushed)
 490          st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 491       ctx->r_stamp = rPriv->lastStamp;
 492       st_resize_framebuffer(dri_drawable(rPriv)->stfb, rPriv->w, rPriv->h);
 493
 494    } else if (rPriv && dPriv == rPriv) {
 495
 496       ctx->r_stamp = ctx->d_stamp;
 497
 498    }
 499 }
 500
 501 void
 502 dri1_update_drawables(struct dri_context *ctx,
 503                       struct dri_drawable *draw, struct dri_drawable *read)
 504 {
 505    dri_lock(ctx);
 506    dri1_update_drawables_locked(ctx, draw->dPriv, read->dPriv);
 507    dri_unlock(ctx);
 508
 509    dri1_propagate_drawable_change(ctx);
 510 }
 511
 512 static INLINE boolean
 513 dri1_intersect_src_bbox(struct drm_clip_rect *dst,
 514                         int dst_x,
 515                         int dst_y,
 516                         const struct drm_clip_rect *src,
 517                         const struct drm_clip_rect *bbox)
 518 {
 519    int xy1;
 520    int xy2;
 521
 522    xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
 523       (int)bbox->x1 + dst_x;
 524    xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
 525       (int)bbox->x2 + dst_x;
 526    if (xy1 >= xy2 || xy1 < 0)
 527       return FALSE;
 528
 529    dst->x1 = xy1;
 530    dst->x2 = xy2;
 531
 532    xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
 533       (int)bbox->y1 + dst_y;
 534    xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
 535       (int)bbox->y2 + dst_y;
 536    if (xy1 >= xy2 || xy1 < 0)
 537       return FALSE;
 538
 539    dst->y1 = xy1;
 540    dst->y2 = xy2;
 541    return TRUE;
 542 }
 543
 544 static void
 545 dri1_swap_copy(struct dri_context *ctx,
 546                struct pipe_surface *dst,
 547                struct pipe_surface *src,
 548                __DRIdrawable * dPriv, const struct drm_clip_rect *bbox)
 549 {
 550    struct pipe_context *pipe = ctx->pipe;
 551    struct drm_clip_rect clip;
 552    struct drm_clip_rect *cur;
 553    int i;
 554
 555    cur = dPriv->pClipRects;
 556
 557    for (i = 0; i < dPriv->numClipRects; ++i) {
 558       if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox)) {
 559          if (pipe->surface_copy) {
 560             pipe->surface_copy(pipe, dst, clip.x1, clip.y1,
 561                                src,
 562                                (int)clip.x1 - dPriv->x,
 563                                (int)clip.y1 - dPriv->y,
 564                                clip.x2 - clip.x1, clip.y2 - clip.y1);
 565          } else {
 566             util_surface_copy(pipe, FALSE, dst, clip.x1, clip.y1,
 567                               src,
 568                               (int)clip.x1 - dPriv->x,
 569                               (int)clip.y1 - dPriv->y,
 570                               clip.x2 - clip.x1, clip.y2 - clip.y1);
 571          }
 572       }
 573    }
 574 }
 575
 576 static void
 577 dri1_copy_to_front(struct dri_context *ctx,
 578                    struct pipe_surface *surf,
 579                    __DRIdrawable * dPriv,
 580                    const struct drm_clip_rect *sub_box,
 581                    struct pipe_fence_handle **fence)
 582 {
 583    struct pipe_context *pipe = ctx->pipe;
 584    boolean save_lost_lock;
 585    uint cur_w;
 586    uint cur_h;
 587    struct drm_clip_rect bbox;
 588    boolean visible = TRUE;
 589
 590    *fence = NULL;
 591
 592    dri_lock(ctx);
 593    save_lost_lock = ctx->stLostLock;
 594    dri1_update_drawables_locked(ctx, dPriv, dPriv);
 595    st_get_framebuffer_dimensions(dri_drawable(dPriv)->stfb, &cur_w, &cur_h);
 596
 597    bbox.x1 = 0;
 598    bbox.x2 = cur_w;
 599    bbox.y1 = 0;
 600    bbox.y2 = cur_h;
 601
 602    if (sub_box)
 603       visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
 604
 605    if (visible && __dri1_api_hooks->present_locked) {
 606
 607       __dri1_api_hooks->present_locked(pipe,
 608                                        surf,
 609                                        dPriv->pClipRects,
 610                                        dPriv->numClipRects,
 611                                        dPriv->x, dPriv->y, &bbox, fence);
 612
 613    } else if (visible && __dri1_api_hooks->front_srf_locked) {
 614
 615       struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);
 616
 617       if (front)
 618          dri1_swap_copy(ctx, front, surf, dPriv, &bbox);
 619
 620       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, fence);
 621    }
 622
 623    ctx->stLostLock = save_lost_lock;
 624
 625    /**
 626     * FIXME: Revisit this: Update drawables on copy_sub_buffer ?
 627     */
 628
 629    if (!sub_box)
 630       dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);
 631
 632    dri_unlock(ctx);
 633    dri1_propagate_drawable_change(ctx);
 634 }
 635
 636 void
 637 dri1_flush_frontbuffer(struct pipe_screen *screen,
 638                        struct pipe_surface *surf, void *context_private)
 639 {
 640    struct dri_context *ctx = (struct dri_context *)context_private;
 641    struct pipe_fence_handle *dummy_fence;
 642
 643    dri1_copy_to_front(ctx, surf, ctx->dPriv, NULL, &dummy_fence);
 644    screen->fence_reference(screen, &dummy_fence, NULL);
 645
 646    /**
 647     * FIXME: Do we need swap throttling here?
 648     */
 649 }
 650
 651 void
 652 dri_swap_buffers(__DRIdrawable * dPriv)
 653 {
 654    struct dri_context *ctx;
 655    struct pipe_surface *back_surf;
 656    struct dri_drawable *draw = dri_drawable(dPriv);
 657    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 658    struct pipe_fence_handle *fence;
 659    struct st_context *st = st_get_current();
 660
 661    assert(__dri1_api_hooks != NULL);
 662
 663    if (!st)
 664       return;                          /* For now */
 665
 666    ctx = (struct dri_context *)st->pipe->priv;
 667
 668    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 669    if (back_surf) {
 670       st_notify_swapbuffers(draw->stfb);
 671       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 672       fence = dri_swap_fences_pop_front(draw);
 673       if (fence) {
 674          (void)screen->fence_finish(screen, fence, 0);
 675          screen->fence_reference(screen, &fence, NULL);
 676       }
 677       dri1_copy_to_front(ctx, back_surf, dPriv, NULL, &fence);
 678       dri_swap_fences_push_back(draw, fence);
 679       screen->fence_reference(screen, &fence, NULL);
 680    }
 681 }
 682
 683 void
 684 dri_copy_sub_buffer(__DRIdrawable * dPriv, int x, int y, int w, int h)
 685 {
 686    struct pipe_screen *screen = dri_screen(dPriv->driScreenPriv)->pipe_screen;
 687    struct drm_clip_rect sub_bbox;
 688    struct dri_context *ctx;
 689    struct pipe_surface *back_surf;
 690    struct dri_drawable *draw = dri_drawable(dPriv);
 691    struct pipe_fence_handle *dummy_fence;
 692    struct st_context *st = st_get_current();
 693
 694    assert(__dri1_api_hooks != NULL);
 695
 696    if (!st)
 697       return;
 698
 699    ctx = (struct dri_context *)st->pipe->priv;
 700
 701    sub_bbox.x1 = x;
 702    sub_bbox.x2 = x + w;
 703    sub_bbox.y1 = y;
 704    sub_bbox.y2 = y + h;
 705
 706    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 707    if (back_surf) {
 708       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 709       dri1_copy_to_front(ctx, back_surf, dPriv, &sub_bbox, &dummy_fence);
 710       screen->fence_reference(screen, &dummy_fence, NULL);
 711    }
 712 }
 713
 714 /* vim: set sw=3 ts=8 sts=3 expandtab: */