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 "main/mtypes.h"
  39 #include "main/renderbuffer.h"
  40 #include "state_tracker/drm_api.h"
  41 #include "state_tracker/dri1_api.h"
  42 #include "state_tracker/st_public.h"
  43 #include "state_tracker/st_context.h"
  44 #include "state_tracker/st_cb_fbo.h"
  45
  46 #include "util/u_format.h"
  47 #include "util/u_memory.h"
  48 #include "util/u_rect.h"
  49 #include "util/u_inlines.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    if ((dri_screen->dri2.loader
 136         && (dri_screen->dri2.loader->base.version > 2)
 137         && (dri_screen->dri2.loader->getBuffersWithFormat != NULL))) {
 138       buffers = (*dri_screen->dri2.loader->getBuffersWithFormat)
 139                 (dri_drawable, &dri_drawable->w, &dri_drawable->h,
 140                  drawable->attachments, drawable->num_attachments,
 141                  &count, dri_drawable->loaderPrivate);
 142    } else {
 143       assert(dri_screen->dri2.loader);
 144       buffers = (*dri_screen->dri2.loader->getBuffers) (dri_drawable,
 145                                                         &dri_drawable->w,
 146                                                         &dri_drawable->h,
 147                                                         drawable->attachments,
 148                                                         drawable->
 149                                                         num_attachments, &count,
 150                                                         dri_drawable->
 151                                                         loaderPrivate);
 152    }
 153
 154    if (buffers == NULL) {
 155       return;
 156    }
 157
 158    /* set one cliprect to cover the whole dri_drawable */
 159    dri_drawable->x = 0;
 160    dri_drawable->y = 0;
 161    dri_drawable->backX = 0;
 162    dri_drawable->backY = 0;
 163    dri_drawable->numClipRects = 1;
 164    dri_drawable->pClipRects[0].x1 = 0;
 165    dri_drawable->pClipRects[0].y1 = 0;
 166    dri_drawable->pClipRects[0].x2 = dri_drawable->w;
 167    dri_drawable->pClipRects[0].y2 = dri_drawable->h;
 168    dri_drawable->numBackClipRects = 1;
 169    dri_drawable->pBackClipRects[0].x1 = 0;
 170    dri_drawable->pBackClipRects[0].y1 = 0;
 171    dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
 172    dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
 173
 174    if (drawable->old_num == count &&
 175        drawable->old_w == dri_drawable->w &&
 176        drawable->old_h == dri_drawable->h &&
 177        memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0) {
 178        return;
 179    } else {
 180       drawable->old_num = count;
 181       drawable->old_w = dri_drawable->w;
 182       drawable->old_h = dri_drawable->h;
 183       memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
 184    }
 185
 186    drawable->is_pixmap = dri2_check_if_pixmap(buffers, count);
 187
 188    for (i = 0; i < count; i++) {
 189       enum pipe_format format = 0;
 190       int index = 0;
 191
 192       switch (buffers[i].attachment) {
 193       case __DRI_BUFFER_FRONT_LEFT:
 194          if (!st_screen->auto_fake_front)
 195             continue;
 196          /* fallthrough */
 197       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 198          index = ST_SURFACE_FRONT_LEFT;
 199          format = drawable->color_format;
 200          break;
 201       case __DRI_BUFFER_BACK_LEFT:
 202          index = ST_SURFACE_BACK_LEFT;
 203          format = drawable->color_format;
 204          break;
 205       case __DRI_BUFFER_DEPTH:
 206       case __DRI_BUFFER_DEPTH_STENCIL:
 207       case __DRI_BUFFER_STENCIL:
 208          index = ST_SURFACE_DEPTH;
 209          format = drawable->depth_stencil_format;
 210          break;
 211       case __DRI_BUFFER_ACCUM:
 212       default:
 213          assert(0);
 214       }
 215
 216       if (index == ST_SURFACE_DEPTH) {
 217          if (have_depth)
 218             continue;
 219          else
 220             have_depth = TRUE;
 221       }
 222
 223       surface = dri_surface_from_handle(api,
 224                                         screen,
 225                                         buffers[i].name,
 226                                         format,
 227                                         dri_drawable->w,
 228                                         dri_drawable->h, buffers[i].pitch);
 229
 230       switch (buffers[i].attachment) {
 231       case __DRI_BUFFER_FRONT_LEFT:
 232       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 233       case __DRI_BUFFER_BACK_LEFT:
 234          drawable->color_format = surface->format;
 235          break;
 236       case __DRI_BUFFER_DEPTH:
 237       case __DRI_BUFFER_DEPTH_STENCIL:
 238       case __DRI_BUFFER_STENCIL:
 239          drawable->depth_stencil_format = surface->format;
 240          break;
 241       case __DRI_BUFFER_ACCUM:
 242       default:
 243          assert(0);
 244       }
 245
 246       st_set_framebuffer_surface(drawable->stfb, index, surface);
 247       pipe_surface_reference(&surface, NULL);
 248    }
 249    /* this needed, or else the state tracker fails to pick the new buffers */
 250    st_resize_framebuffer(drawable->stfb, dri_drawable->w, dri_drawable->h);
 251 }
 252
 253 /**
 254  * These are used for GLX_EXT_texture_from_pixmap
 255  */
 256 void dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
 257                           GLint format, __DRIdrawable *dPriv)
 258 {
 259    struct dri_drawable *drawable = dri_drawable(dPriv);
 260    struct pipe_surface *ps;
 261
 262    if (!drawable->stfb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer) {
 263       struct gl_renderbuffer *rb =
 264          st_new_renderbuffer_fb(drawable->color_format, 0 /*XXX*/, FALSE);
 265       _mesa_add_renderbuffer(&drawable->stfb->Base, BUFFER_FRONT_LEFT, rb);
 266    }
 267
 268    dri_get_buffers(drawable->dPriv);
 269    st_get_framebuffer_surface(drawable->stfb, ST_SURFACE_FRONT_LEFT, &ps);
 270
 271    if (!ps)
 272       return;
 273
 274    st_bind_texture_surface(ps, target == GL_TEXTURE_2D ? ST_TEXTURE_2D :
 275                            ST_TEXTURE_RECT, 0, drawable->color_format);
 276 }
 277
 278 void dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
 279                          __DRIdrawable *dPriv)
 280 {
 281    dri2_set_tex_buffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
 282 }
 283
 284 void
 285 dri_update_buffer(struct pipe_screen *screen, void *context_private)
 286 {
 287    struct dri_context *ctx = (struct dri_context *)context_private;
 288
 289    if (ctx->d_stamp == *ctx->dPriv->pStamp &&
 290        ctx->r_stamp == *ctx->rPriv->pStamp)
 291       return;
 292
 293    ctx->d_stamp = *ctx->dPriv->pStamp;
 294    ctx->r_stamp = *ctx->rPriv->pStamp;
 295
 296    /* Ask the X server for new renderbuffers. */
 297    dri_get_buffers(ctx->dPriv);
 298    if (ctx->dPriv != ctx->rPriv)
 299       dri_get_buffers(ctx->rPriv);
 300
 301 }
 302
 303 void
 304 dri_flush_frontbuffer(struct pipe_screen *screen,
 305                       struct pipe_surface *surf, void *context_private)
 306 {
 307    struct dri_context *ctx = (struct dri_context *)context_private;
 308    struct dri_drawable *drawable = dri_drawable(ctx->dPriv);
 309    __DRIdrawable *dri_drawable = ctx->dPriv;
 310    __DRIscreen *dri_screen = ctx->sPriv;
 311
 312    /* XXX Does this function get called with DRI1? */
 313
 314    if (ctx->dPriv == NULL) {
 315       debug_printf("%s: no drawable bound to context\n", __func__);
 316       return;
 317    }
 318
 319 #if 0
 320    /* TODO if rendering to pixmaps is slow enable this code. */
 321    if (drawable->is_pixmap)
 322       return;
 323 #else
 324    (void)drawable;
 325 #endif
 326
 327    (*dri_screen->dri2.loader->flushFrontBuffer)(dri_drawable,
 328                                                 dri_drawable->loaderPrivate);
 329 }
 330
 331 /**
 332  * This is called when we need to set up GL rendering to a new X window.
 333  */
 334 boolean
 335 dri_create_buffer(__DRIscreen * sPriv,
 336                   __DRIdrawable * dPriv,
 337                   const __GLcontextModes * visual, boolean isPixmap)
 338 {
 339    struct dri_screen *screen = sPriv->private;
 340    struct dri_drawable *drawable = NULL;
 341    int i;
 342
 343    if (isPixmap)
 344       goto fail;                       /* not implemented */
 345
 346    drawable = CALLOC_STRUCT(dri_drawable);
 347    if (drawable == NULL)
 348       goto fail;
 349
 350    if (visual->redBits == 8) {
 351       if (visual->alphaBits == 8)
 352          drawable->color_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 353       else
 354          drawable->color_format = PIPE_FORMAT_B8G8R8X8_UNORM;
 355    } else {
 356       drawable->color_format = PIPE_FORMAT_B5G6R5_UNORM;
 357    }
 358
 359    switch(visual->depthBits) {
 360    default:
 361    case 0:
 362       drawable->depth_stencil_format = PIPE_FORMAT_NONE;
 363       break;
 364    case 16:
 365       drawable->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 366       break;
 367    case 24:
 368       if (visual->stencilBits == 0) {
 369          drawable->depth_stencil_format = (screen->d_depth_bits_last) ?
 370                                           PIPE_FORMAT_Z24X8_UNORM:
 371                                           PIPE_FORMAT_X8Z24_UNORM;
 372       } else {
 373          drawable->depth_stencil_format = (screen->sd_depth_bits_last) ?
 374                                           PIPE_FORMAT_Z24S8_UNORM:
 375                                           PIPE_FORMAT_S8Z24_UNORM;
 376       }
 377       break;
 378    case 32:
 379       drawable->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 380       break;
 381    }
 382
 383    drawable->stfb = st_create_framebuffer(visual,
 384                                           drawable->color_format,
 385                                           drawable->depth_stencil_format,
 386                                           drawable->depth_stencil_format,
 387                                           dPriv->w,
 388                                           dPriv->h, (void *)drawable);
 389    if (drawable->stfb == NULL)
 390       goto fail;
 391
 392    drawable->sPriv = sPriv;
 393    drawable->dPriv = dPriv;
 394    dPriv->driverPrivate = (void *)drawable;
 395
 396    /* setup dri2 buffers information */
 397    /* TODO incase of double buffer visual, delay fake creation */
 398    i = 0;
 399    if (sPriv->dri2.loader
 400        && (sPriv->dri2.loader->base.version > 2)
 401        && (sPriv->dri2.loader->getBuffersWithFormat != NULL)) {
 402       drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 403       drawable->attachments[i++] = visual->rgbBits;
 404       if (!screen->auto_fake_front)  {
 405          drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
 406          drawable->attachments[i++] = visual->rgbBits;
 407       }
 408       if (visual->doubleBufferMode) {
 409          drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 410          drawable->attachments[i++] = visual->rgbBits;
 411       }
 412       if (visual->depthBits && visual->stencilBits) {
 413          drawable->attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 414          drawable->attachments[i++] = visual->depthBits + visual->stencilBits;
 415       } else if (visual->depthBits) {
 416          drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
 417          drawable->attachments[i++] = visual->depthBits;
 418       } else if (visual->stencilBits) {
 419          drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
 420          drawable->attachments[i++] = visual->stencilBits;
 421       }
 422       drawable->num_attachments = i / 2;
 423    } else {
 424       drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 425       if (!screen->auto_fake_front)
 426          drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
 427       if (visual->doubleBufferMode)
 428          drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 429       if (visual->depthBits && visual->stencilBits)
 430          drawable->attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 431       else if (visual->depthBits)
 432          drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
 433       else if (visual->stencilBits)
 434          drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
 435       drawable->num_attachments = i;
 436    }
 437
 438    drawable->desired_fences = 2;
 439
 440    return GL_TRUE;
 441 fail:
 442    FREE(drawable);
 443    return GL_FALSE;
 444 }
 445
 446 static struct pipe_fence_handle *
 447 dri_swap_fences_pop_front(struct dri_drawable *draw)
 448 {
 449    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 450    struct pipe_fence_handle *fence = NULL;
 451
 452    if (draw->cur_fences >= draw->desired_fences) {
 453       screen->fence_reference(screen, &fence, draw->swap_fences[draw->tail]);
 454       screen->fence_reference(screen, &draw->swap_fences[draw->tail++], NULL);
 455       --draw->cur_fences;
 456       draw->tail &= DRI_SWAP_FENCES_MASK;
 457    }
 458    return fence;
 459 }
 460
 461 static void
 462 dri_swap_fences_push_back(struct dri_drawable *draw,
 463                           struct pipe_fence_handle *fence)
 464 {
 465    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 466
 467    if (!fence)
 468       return;
 469
 470    if (draw->cur_fences < DRI_SWAP_FENCES_MAX) {
 471       draw->cur_fences++;
 472       screen->fence_reference(screen, &draw->swap_fences[draw->head++],
 473                               fence);
 474       draw->head &= DRI_SWAP_FENCES_MASK;
 475    }
 476 }
 477
 478 void
 479 dri_destroy_buffer(__DRIdrawable * dPriv)
 480 {
 481    struct dri_drawable *drawable = dri_drawable(dPriv);
 482    struct pipe_fence_handle *fence;
 483    struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
 484
 485    st_unreference_framebuffer(drawable->stfb);
 486    drawable->desired_fences = 0;
 487    while (drawable->cur_fences) {
 488       fence = dri_swap_fences_pop_front(drawable);
 489       screen->fence_reference(screen, &fence, NULL);
 490    }
 491
 492    FREE(drawable);
 493 }
 494
 495 static void
 496 dri1_update_drawables_locked(struct dri_context *ctx,
 497                              __DRIdrawable * driDrawPriv,
 498                              __DRIdrawable * driReadPriv)
 499 {
 500    if (ctx->stLostLock) {
 501       ctx->stLostLock = FALSE;
 502       if (driDrawPriv == driReadPriv)
 503          DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
 504       else
 505          DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
 506                                          driReadPriv);
 507    }
 508 }
 509
 510 /**
 511  * This ensures all contexts which bind to a drawable pick up the
 512  * drawable change and signal new buffer state.
 513  * Calling st_resize_framebuffer for each context may seem like overkill,
 514  * but no new buffers will actually be allocated if the dimensions don't
 515  * change.
 516  */
 517
 518 static void
 519 dri1_propagate_drawable_change(struct dri_context *ctx)
 520 {
 521    __DRIdrawable *dPriv = ctx->dPriv;
 522    __DRIdrawable *rPriv = ctx->rPriv;
 523    boolean flushed = FALSE;
 524
 525    if (dPriv && ctx->d_stamp != dPriv->lastStamp) {
 526
 527       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 528       flushed = TRUE;
 529       ctx->d_stamp = dPriv->lastStamp;
 530       st_resize_framebuffer(dri_drawable(dPriv)->stfb, dPriv->w, dPriv->h);
 531
 532    }
 533
 534    if (rPriv && dPriv != rPriv && ctx->r_stamp != rPriv->lastStamp) {
 535
 536       if (!flushed)
 537          st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 538       ctx->r_stamp = rPriv->lastStamp;
 539       st_resize_framebuffer(dri_drawable(rPriv)->stfb, rPriv->w, rPriv->h);
 540
 541    } else if (rPriv && dPriv == rPriv) {
 542
 543       ctx->r_stamp = ctx->d_stamp;
 544
 545    }
 546 }
 547
 548 void
 549 dri1_update_drawables(struct dri_context *ctx,
 550                       struct dri_drawable *draw, struct dri_drawable *read)
 551 {
 552    dri_lock(ctx);
 553    dri1_update_drawables_locked(ctx, draw->dPriv, read->dPriv);
 554    dri_unlock(ctx);
 555
 556    dri1_propagate_drawable_change(ctx);
 557 }
 558
 559 static INLINE boolean
 560 dri1_intersect_src_bbox(struct drm_clip_rect *dst,
 561                         int dst_x,
 562                         int dst_y,
 563                         const struct drm_clip_rect *src,
 564                         const struct drm_clip_rect *bbox)
 565 {
 566    int xy1;
 567    int xy2;
 568
 569    xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
 570       (int)bbox->x1 + dst_x;
 571    xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
 572       (int)bbox->x2 + dst_x;
 573    if (xy1 >= xy2 || xy1 < 0)
 574       return FALSE;
 575
 576    dst->x1 = xy1;
 577    dst->x2 = xy2;
 578
 579    xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
 580       (int)bbox->y1 + dst_y;
 581    xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
 582       (int)bbox->y2 + dst_y;
 583    if (xy1 >= xy2 || xy1 < 0)
 584       return FALSE;
 585
 586    dst->y1 = xy1;
 587    dst->y2 = xy2;
 588    return TRUE;
 589 }
 590
 591 static void
 592 dri1_swap_copy(struct dri_context *ctx,
 593                struct pipe_surface *dst,
 594                struct pipe_surface *src,
 595                __DRIdrawable * dPriv, const struct drm_clip_rect *bbox)
 596 {
 597    struct pipe_context *pipe = ctx->pipe;
 598    struct drm_clip_rect clip;
 599    struct drm_clip_rect *cur;
 600    int i;
 601
 602    cur = dPriv->pClipRects;
 603
 604    for (i = 0; i < dPriv->numClipRects; ++i) {
 605       if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox)) {
 606          if (pipe->surface_copy) {
 607             pipe->surface_copy(pipe, dst, clip.x1, clip.y1,
 608                                src,
 609                                (int)clip.x1 - dPriv->x,
 610                                (int)clip.y1 - dPriv->y,
 611                                clip.x2 - clip.x1, clip.y2 - clip.y1);
 612          } else {
 613             util_surface_copy(pipe, FALSE, dst, clip.x1, clip.y1,
 614                               src,
 615                               (int)clip.x1 - dPriv->x,
 616                               (int)clip.y1 - dPriv->y,
 617                               clip.x2 - clip.x1, clip.y2 - clip.y1);
 618          }
 619       }
 620    }
 621 }
 622
 623 static void
 624 dri1_copy_to_front(struct dri_context *ctx,
 625                    struct pipe_surface *surf,
 626                    __DRIdrawable * dPriv,
 627                    const struct drm_clip_rect *sub_box,
 628                    struct pipe_fence_handle **fence)
 629 {
 630    struct pipe_context *pipe = ctx->pipe;
 631    boolean save_lost_lock;
 632    uint cur_w;
 633    uint cur_h;
 634    struct drm_clip_rect bbox;
 635    boolean visible = TRUE;
 636
 637    *fence = NULL;
 638
 639    dri_lock(ctx);
 640    save_lost_lock = ctx->stLostLock;
 641    dri1_update_drawables_locked(ctx, dPriv, dPriv);
 642    st_get_framebuffer_dimensions(dri_drawable(dPriv)->stfb, &cur_w, &cur_h);
 643
 644    bbox.x1 = 0;
 645    bbox.x2 = cur_w;
 646    bbox.y1 = 0;
 647    bbox.y2 = cur_h;
 648
 649    if (sub_box)
 650       visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
 651
 652    if (visible && __dri1_api_hooks->present_locked) {
 653
 654       __dri1_api_hooks->present_locked(pipe,
 655                                        surf,
 656                                        dPriv->pClipRects,
 657                                        dPriv->numClipRects,
 658                                        dPriv->x, dPriv->y, &bbox, fence);
 659
 660    } else if (visible && __dri1_api_hooks->front_srf_locked) {
 661
 662       struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);
 663
 664       if (front)
 665          dri1_swap_copy(ctx, front, surf, dPriv, &bbox);
 666
 667       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, fence);
 668    }
 669
 670    ctx->stLostLock = save_lost_lock;
 671
 672    /**
 673     * FIXME: Revisit this: Update drawables on copy_sub_buffer ?
 674     */
 675
 676    if (!sub_box)
 677       dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);
 678
 679    dri_unlock(ctx);
 680    dri1_propagate_drawable_change(ctx);
 681 }
 682
 683 void
 684 dri1_flush_frontbuffer(struct pipe_screen *screen,
 685                        struct pipe_surface *surf, void *context_private)
 686 {
 687    struct dri_context *ctx = (struct dri_context *)context_private;
 688    struct pipe_fence_handle *dummy_fence;
 689
 690    dri1_copy_to_front(ctx, surf, ctx->dPriv, NULL, &dummy_fence);
 691    screen->fence_reference(screen, &dummy_fence, NULL);
 692
 693    /**
 694     * FIXME: Do we need swap throttling here?
 695     */
 696 }
 697
 698 void
 699 dri_swap_buffers(__DRIdrawable * dPriv)
 700 {
 701    struct dri_context *ctx;
 702    struct pipe_surface *back_surf;
 703    struct dri_drawable *draw = dri_drawable(dPriv);
 704    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 705    struct pipe_fence_handle *fence;
 706    struct st_context *st = st_get_current();
 707
 708    assert(__dri1_api_hooks != NULL);
 709
 710    if (!st)
 711       return;                          /* For now */
 712
 713    ctx = (struct dri_context *)st->pipe->priv;
 714
 715    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 716    if (back_surf) {
 717       st_notify_swapbuffers(draw->stfb);
 718       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 719       fence = dri_swap_fences_pop_front(draw);
 720       if (fence) {
 721          (void)screen->fence_finish(screen, fence, 0);
 722          screen->fence_reference(screen, &fence, NULL);
 723       }
 724       dri1_copy_to_front(ctx, back_surf, dPriv, NULL, &fence);
 725       dri_swap_fences_push_back(draw, fence);
 726       screen->fence_reference(screen, &fence, NULL);
 727    }
 728 }
 729
 730 void
 731 dri_copy_sub_buffer(__DRIdrawable * dPriv, int x, int y, int w, int h)
 732 {
 733    struct pipe_screen *screen = dri_screen(dPriv->driScreenPriv)->pipe_screen;
 734    struct drm_clip_rect sub_bbox;
 735    struct dri_context *ctx;
 736    struct pipe_surface *back_surf;
 737    struct dri_drawable *draw = dri_drawable(dPriv);
 738    struct pipe_fence_handle *dummy_fence;
 739    struct st_context *st = st_get_current();
 740
 741    assert(__dri1_api_hooks != NULL);
 742
 743    if (!st)
 744       return;
 745
 746    ctx = (struct dri_context *)st->pipe->priv;
 747
 748    sub_bbox.x1 = x;
 749    sub_bbox.x2 = x + w;
 750    sub_bbox.y1 = y;
 751    sub_bbox.y2 = y + h;
 752
 753    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 754    if (back_surf) {
 755       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 756       dri1_copy_to_front(ctx, back_surf, dPriv, &sub_bbox, &dummy_fence);
 757       screen->fence_reference(screen, &dummy_fence, NULL);
 758    }
 759 }
 760
 761 /* vim: set sw=3 ts=8 sts=3 expandtab: */