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       buffers = (*dri_screen->dri2.loader->getBuffers) (dri_drawable,
 144                                                         &dri_drawable->w,
 145                                                         &dri_drawable->h,
 146                                                         drawable->attachments,
 147                                                         drawable->
 148                                                         num_attachments, &count,
 149                                                         dri_drawable->
 150                                                         loaderPrivate);
 151
 152    if (buffers == NULL) {
 153       return;
 154    }
 155
 156    /* set one cliprect to cover the whole dri_drawable */
 157    dri_drawable->x = 0;
 158    dri_drawable->y = 0;
 159    dri_drawable->backX = 0;
 160    dri_drawable->backY = 0;
 161    dri_drawable->numClipRects = 1;
 162    dri_drawable->pClipRects[0].x1 = 0;
 163    dri_drawable->pClipRects[0].y1 = 0;
 164    dri_drawable->pClipRects[0].x2 = dri_drawable->w;
 165    dri_drawable->pClipRects[0].y2 = dri_drawable->h;
 166    dri_drawable->numBackClipRects = 1;
 167    dri_drawable->pBackClipRects[0].x1 = 0;
 168    dri_drawable->pBackClipRects[0].y1 = 0;
 169    dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
 170    dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
 171
 172    if (drawable->old_num == count &&
 173        drawable->old_w == dri_drawable->w &&
 174        drawable->old_h == dri_drawable->h &&
 175        memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0) {
 176        return;
 177    } else {
 178       drawable->old_num = count;
 179       drawable->old_w = dri_drawable->w;
 180       drawable->old_h = dri_drawable->h;
 181       memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
 182    }
 183
 184    drawable->is_pixmap = dri2_check_if_pixmap(buffers, count);
 185
 186    for (i = 0; i < count; i++) {
 187       enum pipe_format format = 0;
 188       int index = 0;
 189
 190       switch (buffers[i].attachment) {
 191       case __DRI_BUFFER_FRONT_LEFT:
 192          if (!st_screen->auto_fake_front)
 193             continue;
 194          /* fallthrough */
 195       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 196          index = ST_SURFACE_FRONT_LEFT;
 197          format = drawable->color_format;
 198          break;
 199       case __DRI_BUFFER_BACK_LEFT:
 200          index = ST_SURFACE_BACK_LEFT;
 201          format = drawable->color_format;
 202          break;
 203       case __DRI_BUFFER_DEPTH:
 204       case __DRI_BUFFER_DEPTH_STENCIL:
 205       case __DRI_BUFFER_STENCIL:
 206          index = ST_SURFACE_DEPTH;
 207          format = drawable->depth_stencil_format;
 208          break;
 209       case __DRI_BUFFER_ACCUM:
 210       default:
 211          assert(0);
 212       }
 213
 214       if (index == ST_SURFACE_DEPTH) {
 215          if (have_depth)
 216             continue;
 217          else
 218             have_depth = TRUE;
 219       }
 220
 221       surface = dri_surface_from_handle(api,
 222                                         screen,
 223                                         buffers[i].name,
 224                                         format,
 225                                         dri_drawable->w,
 226                                         dri_drawable->h, buffers[i].pitch);
 227
 228       switch (buffers[i].attachment) {
 229       case __DRI_BUFFER_FRONT_LEFT:
 230       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 231       case __DRI_BUFFER_BACK_LEFT:
 232          drawable->color_format = surface->format;
 233          break;
 234       case __DRI_BUFFER_DEPTH:
 235       case __DRI_BUFFER_DEPTH_STENCIL:
 236       case __DRI_BUFFER_STENCIL:
 237          drawable->depth_stencil_format = surface->format;
 238          break;
 239       case __DRI_BUFFER_ACCUM:
 240       default:
 241          assert(0);
 242       }
 243
 244       st_set_framebuffer_surface(drawable->stfb, index, surface);
 245       pipe_surface_reference(&surface, NULL);
 246    }
 247    /* this needed, or else the state tracker fails to pick the new buffers */
 248    st_resize_framebuffer(drawable->stfb, dri_drawable->w, dri_drawable->h);
 249 }
 250
 251 /**
 252  * These are used for GLX_EXT_texture_from_pixmap
 253  */
 254 void dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
 255                           GLint format, __DRIdrawable *dPriv)
 256 {
 257    struct dri_drawable *drawable = dri_drawable(dPriv);
 258    struct pipe_surface *ps;
 259
 260    if (!drawable->stfb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer) {
 261       struct gl_renderbuffer *rb =
 262          st_new_renderbuffer_fb(drawable->color_format, 0 /*XXX*/, FALSE);
 263       _mesa_add_renderbuffer(&drawable->stfb->Base, BUFFER_FRONT_LEFT, rb);
 264    }
 265
 266    dri_get_buffers(drawable->dPriv);
 267    st_get_framebuffer_surface(drawable->stfb, ST_SURFACE_FRONT_LEFT, &ps);
 268
 269    if (!ps)
 270       return;
 271
 272    st_bind_texture_surface(ps, target == GL_TEXTURE_2D ? ST_TEXTURE_2D :
 273                            ST_TEXTURE_RECT, 0, drawable->color_format);
 274 }
 275
 276 void dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
 277                          __DRIdrawable *dPriv)
 278 {
 279    dri2_set_tex_buffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
 280 }
 281
 282 void
 283 dri_update_buffer(struct pipe_screen *screen, void *context_private)
 284 {
 285    struct dri_context *ctx = (struct dri_context *)context_private;
 286
 287    dri_get_buffers(ctx->dPriv);
 288 }
 289
 290 void
 291 dri_flush_frontbuffer(struct pipe_screen *screen,
 292                       struct pipe_surface *surf, void *context_private)
 293 {
 294    struct dri_context *ctx = (struct dri_context *)context_private;
 295    struct dri_drawable *drawable = dri_drawable(ctx->dPriv);
 296    __DRIdrawable *dri_drawable = ctx->dPriv;
 297    __DRIscreen *dri_screen = ctx->sPriv;
 298
 299    /* XXX Does this function get called with DRI1? */
 300
 301    if (ctx->dPriv == NULL) {
 302       debug_printf("%s: no drawable bound to context\n", __func__);
 303       return;
 304    }
 305
 306 #if 0
 307    /* TODO if rendering to pixmaps is slow enable this code. */
 308    if (drawable->is_pixmap)
 309       return;
 310 #else
 311    (void)drawable;
 312 #endif
 313
 314    (*dri_screen->dri2.loader->flushFrontBuffer)(dri_drawable,
 315                                                 dri_drawable->loaderPrivate);
 316 }
 317
 318 /**
 319  * This is called when we need to set up GL rendering to a new X window.
 320  */
 321 boolean
 322 dri_create_buffer(__DRIscreen * sPriv,
 323                   __DRIdrawable * dPriv,
 324                   const __GLcontextModes * visual, boolean isPixmap)
 325 {
 326    struct dri_screen *screen = sPriv->private;
 327    struct dri_drawable *drawable = NULL;
 328    int i;
 329
 330    if (isPixmap)
 331       goto fail;                       /* not implemented */
 332
 333    drawable = CALLOC_STRUCT(dri_drawable);
 334    if (drawable == NULL)
 335       goto fail;
 336
 337    if (visual->redBits == 8) {
 338       if (visual->alphaBits == 8)
 339          drawable->color_format = PIPE_FORMAT_A8R8G8B8_UNORM;
 340       else
 341          drawable->color_format = PIPE_FORMAT_X8R8G8B8_UNORM;
 342    } else {
 343       drawable->color_format = PIPE_FORMAT_R5G6B5_UNORM;
 344    }
 345
 346    switch(visual->depthBits) {
 347    default:
 348    case 0:
 349       drawable->depth_stencil_format = PIPE_FORMAT_NONE;
 350       break;
 351    case 16:
 352       drawable->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 353       break;
 354    case 24:
 355       if (visual->stencilBits == 0) {
 356          drawable->depth_stencil_format = (screen->d_depth_bits_last) ?
 357                                           PIPE_FORMAT_X8Z24_UNORM:
 358                                           PIPE_FORMAT_Z24X8_UNORM;
 359       } else {
 360          drawable->depth_stencil_format = (screen->sd_depth_bits_last) ?
 361                                           PIPE_FORMAT_S8Z24_UNORM:
 362                                           PIPE_FORMAT_Z24S8_UNORM;
 363       }
 364       break;
 365    case 32:
 366       drawable->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 367       break;
 368    }
 369
 370    drawable->stfb = st_create_framebuffer(visual,
 371                                           drawable->color_format,
 372                                           drawable->depth_stencil_format,
 373                                           drawable->depth_stencil_format,
 374                                           dPriv->w,
 375                                           dPriv->h, (void *)drawable);
 376    if (drawable->stfb == NULL)
 377       goto fail;
 378
 379    drawable->sPriv = sPriv;
 380    drawable->dPriv = dPriv;
 381    dPriv->driverPrivate = (void *)drawable;
 382
 383    /* setup dri2 buffers information */
 384    /* TODO incase of double buffer visual, delay fake creation */
 385    i = 0;
 386    if (sPriv->dri2.loader
 387        && (sPriv->dri2.loader->base.version > 2)
 388        && (sPriv->dri2.loader->getBuffersWithFormat != NULL)) {
 389       drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 390       drawable->attachments[i++] = visual->rgbBits;
 391       if (!screen->auto_fake_front)  {
 392          drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
 393          drawable->attachments[i++] = visual->rgbBits;
 394       }
 395       if (visual->doubleBufferMode) {
 396          drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 397          drawable->attachments[i++] = visual->rgbBits;
 398       }
 399       if (visual->depthBits && visual->stencilBits) {
 400          drawable->attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 401          drawable->attachments[i++] = visual->depthBits + visual->stencilBits;
 402       } else if (visual->depthBits) {
 403          drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
 404          drawable->attachments[i++] = visual->depthBits;
 405       } else if (visual->stencilBits) {
 406          drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
 407          drawable->attachments[i++] = visual->stencilBits;
 408       }
 409       drawable->num_attachments = i / 2;
 410    } else {
 411       drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 412       if (!screen->auto_fake_front)
 413          drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
 414       if (visual->doubleBufferMode)
 415          drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 416       if (visual->depthBits && visual->stencilBits)
 417          drawable->attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 418       else if (visual->depthBits)
 419          drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
 420       else if (visual->stencilBits)
 421          drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
 422       drawable->num_attachments = i;
 423    }
 424
 425    drawable->desired_fences = 2;
 426
 427    return GL_TRUE;
 428 fail:
 429    FREE(drawable);
 430    return GL_FALSE;
 431 }
 432
 433 static struct pipe_fence_handle *
 434 dri_swap_fences_pop_front(struct dri_drawable *draw)
 435 {
 436    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 437    struct pipe_fence_handle *fence = NULL;
 438
 439    if (draw->cur_fences >= draw->desired_fences) {
 440       screen->fence_reference(screen, &fence, draw->swap_fences[draw->tail]);
 441       screen->fence_reference(screen, &draw->swap_fences[draw->tail++], NULL);
 442       --draw->cur_fences;
 443       draw->tail &= DRI_SWAP_FENCES_MASK;
 444    }
 445    return fence;
 446 }
 447
 448 static void
 449 dri_swap_fences_push_back(struct dri_drawable *draw,
 450                           struct pipe_fence_handle *fence)
 451 {
 452    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 453
 454    if (!fence)
 455       return;
 456
 457    if (draw->cur_fences < DRI_SWAP_FENCES_MAX) {
 458       draw->cur_fences++;
 459       screen->fence_reference(screen, &draw->swap_fences[draw->head++],
 460                               fence);
 461       draw->head &= DRI_SWAP_FENCES_MASK;
 462    }
 463 }
 464
 465 void
 466 dri_destroy_buffer(__DRIdrawable * dPriv)
 467 {
 468    struct dri_drawable *drawable = dri_drawable(dPriv);
 469    struct pipe_fence_handle *fence;
 470    struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
 471
 472    st_unreference_framebuffer(drawable->stfb);
 473    drawable->desired_fences = 0;
 474    while (drawable->cur_fences) {
 475       fence = dri_swap_fences_pop_front(drawable);
 476       screen->fence_reference(screen, &fence, NULL);
 477    }
 478
 479    FREE(drawable);
 480 }
 481
 482 static void
 483 dri1_update_drawables_locked(struct dri_context *ctx,
 484                              __DRIdrawable * driDrawPriv,
 485                              __DRIdrawable * driReadPriv)
 486 {
 487    if (ctx->stLostLock) {
 488       ctx->stLostLock = FALSE;
 489       if (driDrawPriv == driReadPriv)
 490          DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
 491       else
 492          DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
 493                                          driReadPriv);
 494    }
 495 }
 496
 497 /**
 498  * This ensures all contexts which bind to a drawable pick up the
 499  * drawable change and signal new buffer state.
 500  * Calling st_resize_framebuffer for each context may seem like overkill,
 501  * but no new buffers will actually be allocated if the dimensions don't
 502  * change.
 503  */
 504
 505 static void
 506 dri1_propagate_drawable_change(struct dri_context *ctx)
 507 {
 508    __DRIdrawable *dPriv = ctx->dPriv;
 509    __DRIdrawable *rPriv = ctx->rPriv;
 510    boolean flushed = FALSE;
 511
 512    if (dPriv && ctx->d_stamp != dPriv->lastStamp) {
 513
 514       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 515       flushed = TRUE;
 516       ctx->d_stamp = dPriv->lastStamp;
 517       st_resize_framebuffer(dri_drawable(dPriv)->stfb, dPriv->w, dPriv->h);
 518
 519    }
 520
 521    if (rPriv && dPriv != rPriv && ctx->r_stamp != rPriv->lastStamp) {
 522
 523       if (!flushed)
 524          st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 525       ctx->r_stamp = rPriv->lastStamp;
 526       st_resize_framebuffer(dri_drawable(rPriv)->stfb, rPriv->w, rPriv->h);
 527
 528    } else if (rPriv && dPriv == rPriv) {
 529
 530       ctx->r_stamp = ctx->d_stamp;
 531
 532    }
 533 }
 534
 535 void
 536 dri1_update_drawables(struct dri_context *ctx,
 537                       struct dri_drawable *draw, struct dri_drawable *read)
 538 {
 539    dri_lock(ctx);
 540    dri1_update_drawables_locked(ctx, draw->dPriv, read->dPriv);
 541    dri_unlock(ctx);
 542
 543    dri1_propagate_drawable_change(ctx);
 544 }
 545
 546 static INLINE boolean
 547 dri1_intersect_src_bbox(struct drm_clip_rect *dst,
 548                         int dst_x,
 549                         int dst_y,
 550                         const struct drm_clip_rect *src,
 551                         const struct drm_clip_rect *bbox)
 552 {
 553    int xy1;
 554    int xy2;
 555
 556    xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
 557       (int)bbox->x1 + dst_x;
 558    xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
 559       (int)bbox->x2 + dst_x;
 560    if (xy1 >= xy2 || xy1 < 0)
 561       return FALSE;
 562
 563    dst->x1 = xy1;
 564    dst->x2 = xy2;
 565
 566    xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
 567       (int)bbox->y1 + dst_y;
 568    xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
 569       (int)bbox->y2 + dst_y;
 570    if (xy1 >= xy2 || xy1 < 0)
 571       return FALSE;
 572
 573    dst->y1 = xy1;
 574    dst->y2 = xy2;
 575    return TRUE;
 576 }
 577
 578 static void
 579 dri1_swap_copy(struct dri_context *ctx,
 580                struct pipe_surface *dst,
 581                struct pipe_surface *src,
 582                __DRIdrawable * dPriv, const struct drm_clip_rect *bbox)
 583 {
 584    struct pipe_context *pipe = ctx->pipe;
 585    struct drm_clip_rect clip;
 586    struct drm_clip_rect *cur;
 587    int i;
 588
 589    cur = dPriv->pClipRects;
 590
 591    for (i = 0; i < dPriv->numClipRects; ++i) {
 592       if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox)) {
 593          if (pipe->surface_copy) {
 594             pipe->surface_copy(pipe, dst, clip.x1, clip.y1,
 595                                src,
 596                                (int)clip.x1 - dPriv->x,
 597                                (int)clip.y1 - dPriv->y,
 598                                clip.x2 - clip.x1, clip.y2 - clip.y1);
 599          } else {
 600             util_surface_copy(pipe, FALSE, dst, clip.x1, clip.y1,
 601                               src,
 602                               (int)clip.x1 - dPriv->x,
 603                               (int)clip.y1 - dPriv->y,
 604                               clip.x2 - clip.x1, clip.y2 - clip.y1);
 605          }
 606       }
 607    }
 608 }
 609
 610 static void
 611 dri1_copy_to_front(struct dri_context *ctx,
 612                    struct pipe_surface *surf,
 613                    __DRIdrawable * dPriv,
 614                    const struct drm_clip_rect *sub_box,
 615                    struct pipe_fence_handle **fence)
 616 {
 617    struct pipe_context *pipe = ctx->pipe;
 618    boolean save_lost_lock;
 619    uint cur_w;
 620    uint cur_h;
 621    struct drm_clip_rect bbox;
 622    boolean visible = TRUE;
 623
 624    *fence = NULL;
 625
 626    dri_lock(ctx);
 627    save_lost_lock = ctx->stLostLock;
 628    dri1_update_drawables_locked(ctx, dPriv, dPriv);
 629    st_get_framebuffer_dimensions(dri_drawable(dPriv)->stfb, &cur_w, &cur_h);
 630
 631    bbox.x1 = 0;
 632    bbox.x2 = cur_w;
 633    bbox.y1 = 0;
 634    bbox.y2 = cur_h;
 635
 636    if (sub_box)
 637       visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
 638
 639    if (visible && __dri1_api_hooks->present_locked) {
 640
 641       __dri1_api_hooks->present_locked(pipe,
 642                                        surf,
 643                                        dPriv->pClipRects,
 644                                        dPriv->numClipRects,
 645                                        dPriv->x, dPriv->y, &bbox, fence);
 646
 647    } else if (visible && __dri1_api_hooks->front_srf_locked) {
 648
 649       struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);
 650
 651       if (front)
 652          dri1_swap_copy(ctx, front, surf, dPriv, &bbox);
 653
 654       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, fence);
 655    }
 656
 657    ctx->stLostLock = save_lost_lock;
 658
 659    /**
 660     * FIXME: Revisit this: Update drawables on copy_sub_buffer ?
 661     */
 662
 663    if (!sub_box)
 664       dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);
 665
 666    dri_unlock(ctx);
 667    dri1_propagate_drawable_change(ctx);
 668 }
 669
 670 void
 671 dri1_flush_frontbuffer(struct pipe_screen *screen,
 672                        struct pipe_surface *surf, void *context_private)
 673 {
 674    struct dri_context *ctx = (struct dri_context *)context_private;
 675    struct pipe_fence_handle *dummy_fence;
 676
 677    dri1_copy_to_front(ctx, surf, ctx->dPriv, NULL, &dummy_fence);
 678    screen->fence_reference(screen, &dummy_fence, NULL);
 679
 680    /**
 681     * FIXME: Do we need swap throttling here?
 682     */
 683 }
 684
 685 void
 686 dri_swap_buffers(__DRIdrawable * dPriv)
 687 {
 688    struct dri_context *ctx;
 689    struct pipe_surface *back_surf;
 690    struct dri_drawable *draw = dri_drawable(dPriv);
 691    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 692    struct pipe_fence_handle *fence;
 693    struct st_context *st = st_get_current();
 694
 695    assert(__dri1_api_hooks != NULL);
 696
 697    if (!st)
 698       return;                          /* For now */
 699
 700    ctx = (struct dri_context *)st->pipe->priv;
 701
 702    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 703    if (back_surf) {
 704       st_notify_swapbuffers(draw->stfb);
 705       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 706       fence = dri_swap_fences_pop_front(draw);
 707       if (fence) {
 708          (void)screen->fence_finish(screen, fence, 0);
 709          screen->fence_reference(screen, &fence, NULL);
 710       }
 711       dri1_copy_to_front(ctx, back_surf, dPriv, NULL, &fence);
 712       dri_swap_fences_push_back(draw, fence);
 713       screen->fence_reference(screen, &fence, NULL);
 714    }
 715 }
 716
 717 void
 718 dri_copy_sub_buffer(__DRIdrawable * dPriv, int x, int y, int w, int h)
 719 {
 720    struct pipe_screen *screen = dri_screen(dPriv->driScreenPriv)->pipe_screen;
 721    struct drm_clip_rect sub_bbox;
 722    struct dri_context *ctx;
 723    struct pipe_surface *back_surf;
 724    struct dri_drawable *draw = dri_drawable(dPriv);
 725    struct pipe_fence_handle *dummy_fence;
 726    struct st_context *st = st_get_current();
 727
 728    assert(__dri1_api_hooks != NULL);
 729
 730    if (!st)
 731       return;
 732
 733    ctx = (struct dri_context *)st->pipe->priv;
 734
 735    sub_bbox.x1 = x;
 736    sub_bbox.x2 = x + w;
 737    sub_bbox.y1 = y;
 738    sub_bbox.y2 = y + h;
 739
 740    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 741    if (back_surf) {
 742       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 743       dri1_copy_to_front(ctx, back_surf, dPriv, &sub_bbox, &dummy_fence);
 744       screen->fence_reference(screen, &dummy_fence, NULL);
 745    }
 746 }
 747
 748 /* vim: set sw=3 ts=8 sts=3 expandtab: */