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    struct winsys_handle whandle;
  62
  63    memset(&templat, 0, sizeof(templat));
  64    templat.tex_usage |= PIPE_TEXTURE_USAGE_RENDER_TARGET;
  65    templat.target = PIPE_TEXTURE_2D;
  66    templat.last_level = 0;
  67    templat.depth0 = 1;
  68    templat.format = format;
  69    templat.width0 = width;
  70    templat.height0 = height;
  71
  72    memset(&whandle, 0, sizeof(whandle));
  73    whandle.handle = handle;
  74    whandle.stride = pitch;
  75
  76    texture = screen->texture_from_handle(screen, &templat, &whandle);
  77
  78    if (!texture) {
  79       debug_printf("%s: Failed to blanket the buffer with a texture\n", __func__);
  80       return NULL;
  81    }
  82
  83    surface = screen->get_tex_surface(screen, texture, 0, 0, 0,
  84                                      PIPE_BUFFER_USAGE_GPU_READ |
  85                                      PIPE_BUFFER_USAGE_GPU_WRITE);
  86
  87    /* we don't need the texture from this point on */
  88    pipe_texture_reference(&texture, NULL);
  89    return surface;
  90 }
  91
  92 /**
  93  * Pixmaps have will have the same name of fake front and front.
  94  */
  95 static boolean
  96 dri2_check_if_pixmap(__DRIbuffer *buffers, int count)
  97 {
  98    boolean found = FALSE;
  99    boolean is_pixmap = FALSE;
 100    unsigned name;
 101    int i;
 102
 103    for (i = 0; i < count; i++) {
 104       switch (buffers[i].attachment) {
 105       case __DRI_BUFFER_FRONT_LEFT:
 106       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 107          if (found) {
 108             is_pixmap = buffers[i].name == name;
 109          } else {
 110             name = buffers[i].name;
 111             found = TRUE;
 112          }
 113       default:
 114          continue;
 115       }
 116    }
 117
 118    return is_pixmap;
 119 }
 120
 121 /**
 122  * This will be called a drawable is known to have been resized.
 123  */
 124 void
 125 dri_get_buffers(__DRIdrawable * dPriv)
 126 {
 127
 128    struct dri_drawable *drawable = dri_drawable(dPriv);
 129    struct pipe_surface *surface = NULL;
 130    struct dri_screen *st_screen = dri_screen(drawable->sPriv);
 131    struct pipe_screen *screen = st_screen->pipe_screen;
 132    __DRIbuffer *buffers = NULL;
 133    __DRIscreen *dri_screen = drawable->sPriv;
 134    __DRIdrawable *dri_drawable = drawable->dPriv;
 135    struct drm_api *api = st_screen->api;
 136    boolean have_depth = FALSE;
 137    int i, count;
 138
 139    if ((dri_screen->dri2.loader
 140         && (dri_screen->dri2.loader->base.version > 2)
 141         && (dri_screen->dri2.loader->getBuffersWithFormat != NULL))) {
 142       buffers = (*dri_screen->dri2.loader->getBuffersWithFormat)
 143                 (dri_drawable, &dri_drawable->w, &dri_drawable->h,
 144                  drawable->attachments, drawable->num_attachments,
 145                  &count, dri_drawable->loaderPrivate);
 146    } else {
 147       assert(dri_screen->dri2.loader);
 148       buffers = (*dri_screen->dri2.loader->getBuffers) (dri_drawable,
 149                                                         &dri_drawable->w,
 150                                                         &dri_drawable->h,
 151                                                         drawable->attachments,
 152                                                         drawable->
 153                                                         num_attachments, &count,
 154                                                         dri_drawable->
 155                                                         loaderPrivate);
 156    }
 157
 158    if (buffers == NULL) {
 159       return;
 160    }
 161
 162    /* set one cliprect to cover the whole dri_drawable */
 163    dri_drawable->x = 0;
 164    dri_drawable->y = 0;
 165    dri_drawable->backX = 0;
 166    dri_drawable->backY = 0;
 167    dri_drawable->numClipRects = 1;
 168    dri_drawable->pClipRects[0].x1 = 0;
 169    dri_drawable->pClipRects[0].y1 = 0;
 170    dri_drawable->pClipRects[0].x2 = dri_drawable->w;
 171    dri_drawable->pClipRects[0].y2 = dri_drawable->h;
 172    dri_drawable->numBackClipRects = 1;
 173    dri_drawable->pBackClipRects[0].x1 = 0;
 174    dri_drawable->pBackClipRects[0].y1 = 0;
 175    dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
 176    dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
 177
 178    if (drawable->old_num == count &&
 179        drawable->old_w == dri_drawable->w &&
 180        drawable->old_h == dri_drawable->h &&
 181        memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0) {
 182        return;
 183    } else {
 184       drawable->old_num = count;
 185       drawable->old_w = dri_drawable->w;
 186       drawable->old_h = dri_drawable->h;
 187       memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
 188    }
 189
 190    drawable->is_pixmap = dri2_check_if_pixmap(buffers, count);
 191
 192    for (i = 0; i < count; i++) {
 193       enum pipe_format format = 0;
 194       int index = 0;
 195
 196       switch (buffers[i].attachment) {
 197       case __DRI_BUFFER_FRONT_LEFT:
 198          if (!st_screen->auto_fake_front)
 199             continue;
 200          /* fallthrough */
 201       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 202          index = ST_SURFACE_FRONT_LEFT;
 203          format = drawable->color_format;
 204          break;
 205       case __DRI_BUFFER_BACK_LEFT:
 206          index = ST_SURFACE_BACK_LEFT;
 207          format = drawable->color_format;
 208          break;
 209       case __DRI_BUFFER_DEPTH:
 210       case __DRI_BUFFER_DEPTH_STENCIL:
 211       case __DRI_BUFFER_STENCIL:
 212          index = ST_SURFACE_DEPTH;
 213          format = drawable->depth_stencil_format;
 214          break;
 215       case __DRI_BUFFER_ACCUM:
 216       default:
 217          assert(0);
 218       }
 219
 220       if (index == ST_SURFACE_DEPTH) {
 221          if (have_depth)
 222             continue;
 223          else
 224             have_depth = TRUE;
 225       }
 226
 227       surface = dri_surface_from_handle(api,
 228                                         screen,
 229                                         buffers[i].name,
 230                                         format,
 231                                         dri_drawable->w,
 232                                         dri_drawable->h, buffers[i].pitch);
 233
 234       switch (buffers[i].attachment) {
 235       case __DRI_BUFFER_FRONT_LEFT:
 236       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 237       case __DRI_BUFFER_BACK_LEFT:
 238          drawable->color_format = surface->format;
 239          break;
 240       case __DRI_BUFFER_DEPTH:
 241       case __DRI_BUFFER_DEPTH_STENCIL:
 242       case __DRI_BUFFER_STENCIL:
 243          drawable->depth_stencil_format = surface->format;
 244          break;
 245       case __DRI_BUFFER_ACCUM:
 246       default:
 247          assert(0);
 248       }
 249
 250       st_set_framebuffer_surface(drawable->stfb, index, surface);
 251       pipe_surface_reference(&surface, NULL);
 252    }
 253    /* this needed, or else the state tracker fails to pick the new buffers */
 254    st_resize_framebuffer(drawable->stfb, dri_drawable->w, dri_drawable->h);
 255 }
 256
 257 /**
 258  * These are used for GLX_EXT_texture_from_pixmap
 259  */
 260 void dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
 261                           GLint format, __DRIdrawable *dPriv)
 262 {
 263    struct dri_drawable *drawable = dri_drawable(dPriv);
 264    struct pipe_surface *ps;
 265
 266    if (!drawable->stfb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer) {
 267       struct gl_renderbuffer *rb =
 268          st_new_renderbuffer_fb(drawable->color_format, 0 /*XXX*/, FALSE);
 269       _mesa_add_renderbuffer(&drawable->stfb->Base, BUFFER_FRONT_LEFT, rb);
 270    }
 271
 272    dri_get_buffers(drawable->dPriv);
 273    st_get_framebuffer_surface(drawable->stfb, ST_SURFACE_FRONT_LEFT, &ps);
 274
 275    if (!ps)
 276       return;
 277
 278    st_bind_texture_surface(ps, target == GL_TEXTURE_2D ? ST_TEXTURE_2D :
 279                            ST_TEXTURE_RECT, 0, drawable->color_format);
 280 }
 281
 282 void dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
 283                          __DRIdrawable *dPriv)
 284 {
 285    dri2_set_tex_buffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
 286 }
 287
 288 void
 289 dri_update_buffer(struct pipe_screen *screen, void *context_private)
 290 {
 291    struct dri_context *ctx = (struct dri_context *)context_private;
 292
 293    if (ctx->d_stamp == *ctx->dPriv->pStamp &&
 294        ctx->r_stamp == *ctx->rPriv->pStamp)
 295       return;
 296
 297    ctx->d_stamp = *ctx->dPriv->pStamp;
 298    ctx->r_stamp = *ctx->rPriv->pStamp;
 299
 300    /* Ask the X server for new renderbuffers. */
 301    dri_get_buffers(ctx->dPriv);
 302    if (ctx->dPriv != ctx->rPriv)
 303       dri_get_buffers(ctx->rPriv);
 304
 305 }
 306
 307 void
 308 dri_flush_frontbuffer(struct pipe_screen *screen,
 309                       struct pipe_surface *surf, void *context_private)
 310 {
 311    struct dri_context *ctx = (struct dri_context *)context_private;
 312    struct dri_drawable *drawable = dri_drawable(ctx->dPriv);
 313    __DRIdrawable *dri_drawable = ctx->dPriv;
 314    __DRIscreen *dri_screen = ctx->sPriv;
 315
 316    /* XXX Does this function get called with DRI1? */
 317
 318    if (ctx->dPriv == NULL) {
 319       debug_printf("%s: no drawable bound to context\n", __func__);
 320       return;
 321    }
 322
 323 #if 0
 324    /* TODO if rendering to pixmaps is slow enable this code. */
 325    if (drawable->is_pixmap)
 326       return;
 327 #else
 328    (void)drawable;
 329 #endif
 330
 331    (*dri_screen->dri2.loader->flushFrontBuffer)(dri_drawable,
 332                                                 dri_drawable->loaderPrivate);
 333 }
 334
 335 /**
 336  * This is called when we need to set up GL rendering to a new X window.
 337  */
 338 boolean
 339 dri_create_buffer(__DRIscreen * sPriv,
 340                   __DRIdrawable * dPriv,
 341                   const __GLcontextModes * visual, boolean isPixmap)
 342 {
 343    struct dri_screen *screen = sPriv->private;
 344    struct dri_drawable *drawable = NULL;
 345    int i;
 346
 347    if (isPixmap)
 348       goto fail;                       /* not implemented */
 349
 350    drawable = CALLOC_STRUCT(dri_drawable);
 351    if (drawable == NULL)
 352       goto fail;
 353
 354    if (visual->redBits == 8) {
 355       if (visual->alphaBits == 8)
 356          drawable->color_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 357       else
 358          drawable->color_format = PIPE_FORMAT_B8G8R8X8_UNORM;
 359    } else {
 360       drawable->color_format = PIPE_FORMAT_B5G6R5_UNORM;
 361    }
 362
 363    switch(visual->depthBits) {
 364    default:
 365    case 0:
 366       drawable->depth_stencil_format = PIPE_FORMAT_NONE;
 367       break;
 368    case 16:
 369       drawable->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 370       break;
 371    case 24:
 372       if (visual->stencilBits == 0) {
 373          drawable->depth_stencil_format = (screen->d_depth_bits_last) ?
 374                                           PIPE_FORMAT_Z24X8_UNORM:
 375                                           PIPE_FORMAT_X8Z24_UNORM;
 376       } else {
 377          drawable->depth_stencil_format = (screen->sd_depth_bits_last) ?
 378                                           PIPE_FORMAT_Z24S8_UNORM:
 379                                           PIPE_FORMAT_S8Z24_UNORM;
 380       }
 381       break;
 382    case 32:
 383       drawable->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 384       break;
 385    }
 386
 387    drawable->stfb = st_create_framebuffer(visual,
 388                                           drawable->color_format,
 389                                           drawable->depth_stencil_format,
 390                                           drawable->depth_stencil_format,
 391                                           dPriv->w,
 392                                           dPriv->h, (void *)drawable);
 393    if (drawable->stfb == NULL)
 394       goto fail;
 395
 396    drawable->sPriv = sPriv;
 397    drawable->dPriv = dPriv;
 398    dPriv->driverPrivate = (void *)drawable;
 399
 400    /* setup dri2 buffers information */
 401    /* TODO incase of double buffer visual, delay fake creation */
 402    i = 0;
 403    if (sPriv->dri2.loader
 404        && (sPriv->dri2.loader->base.version > 2)
 405        && (sPriv->dri2.loader->getBuffersWithFormat != NULL)) {
 406       drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 407       drawable->attachments[i++] = visual->rgbBits;
 408       if (!screen->auto_fake_front)  {
 409          drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
 410          drawable->attachments[i++] = visual->rgbBits;
 411       }
 412       if (visual->doubleBufferMode) {
 413          drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 414          drawable->attachments[i++] = visual->rgbBits;
 415       }
 416       if (visual->depthBits && visual->stencilBits) {
 417          drawable->attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 418          drawable->attachments[i++] = visual->depthBits + visual->stencilBits;
 419       } else if (visual->depthBits) {
 420          drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
 421          drawable->attachments[i++] = visual->depthBits;
 422       } else if (visual->stencilBits) {
 423          drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
 424          drawable->attachments[i++] = visual->stencilBits;
 425       }
 426       drawable->num_attachments = i / 2;
 427    } else {
 428       drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 429       if (!screen->auto_fake_front)
 430          drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
 431       if (visual->doubleBufferMode)
 432          drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 433       if (visual->depthBits && visual->stencilBits)
 434          drawable->attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 435       else if (visual->depthBits)
 436          drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
 437       else if (visual->stencilBits)
 438          drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
 439       drawable->num_attachments = i;
 440    }
 441
 442    drawable->desired_fences = 2;
 443
 444    return GL_TRUE;
 445 fail:
 446    FREE(drawable);
 447    return GL_FALSE;
 448 }
 449
 450 static struct pipe_fence_handle *
 451 dri_swap_fences_pop_front(struct dri_drawable *draw)
 452 {
 453    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 454    struct pipe_fence_handle *fence = NULL;
 455
 456    if (draw->cur_fences >= draw->desired_fences) {
 457       screen->fence_reference(screen, &fence, draw->swap_fences[draw->tail]);
 458       screen->fence_reference(screen, &draw->swap_fences[draw->tail++], NULL);
 459       --draw->cur_fences;
 460       draw->tail &= DRI_SWAP_FENCES_MASK;
 461    }
 462    return fence;
 463 }
 464
 465 static void
 466 dri_swap_fences_push_back(struct dri_drawable *draw,
 467                           struct pipe_fence_handle *fence)
 468 {
 469    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 470
 471    if (!fence)
 472       return;
 473
 474    if (draw->cur_fences < DRI_SWAP_FENCES_MAX) {
 475       draw->cur_fences++;
 476       screen->fence_reference(screen, &draw->swap_fences[draw->head++],
 477                               fence);
 478       draw->head &= DRI_SWAP_FENCES_MASK;
 479    }
 480 }
 481
 482 void
 483 dri_destroy_buffer(__DRIdrawable * dPriv)
 484 {
 485    struct dri_drawable *drawable = dri_drawable(dPriv);
 486    struct pipe_fence_handle *fence;
 487    struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
 488
 489    st_unreference_framebuffer(drawable->stfb);
 490    drawable->desired_fences = 0;
 491    while (drawable->cur_fences) {
 492       fence = dri_swap_fences_pop_front(drawable);
 493       screen->fence_reference(screen, &fence, NULL);
 494    }
 495
 496    FREE(drawable);
 497 }
 498
 499 static void
 500 dri1_update_drawables_locked(struct dri_context *ctx,
 501                              __DRIdrawable * driDrawPriv,
 502                              __DRIdrawable * driReadPriv)
 503 {
 504    if (ctx->stLostLock) {
 505       ctx->stLostLock = FALSE;
 506       if (driDrawPriv == driReadPriv)
 507          DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
 508       else
 509          DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
 510                                          driReadPriv);
 511    }
 512 }
 513
 514 /**
 515  * This ensures all contexts which bind to a drawable pick up the
 516  * drawable change and signal new buffer state.
 517  * Calling st_resize_framebuffer for each context may seem like overkill,
 518  * but no new buffers will actually be allocated if the dimensions don't
 519  * change.
 520  */
 521
 522 static void
 523 dri1_propagate_drawable_change(struct dri_context *ctx)
 524 {
 525    __DRIdrawable *dPriv = ctx->dPriv;
 526    __DRIdrawable *rPriv = ctx->rPriv;
 527    boolean flushed = FALSE;
 528
 529    if (dPriv && ctx->d_stamp != dPriv->lastStamp) {
 530
 531       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 532       flushed = TRUE;
 533       ctx->d_stamp = dPriv->lastStamp;
 534       st_resize_framebuffer(dri_drawable(dPriv)->stfb, dPriv->w, dPriv->h);
 535
 536    }
 537
 538    if (rPriv && dPriv != rPriv && ctx->r_stamp != rPriv->lastStamp) {
 539
 540       if (!flushed)
 541          st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 542       ctx->r_stamp = rPriv->lastStamp;
 543       st_resize_framebuffer(dri_drawable(rPriv)->stfb, rPriv->w, rPriv->h);
 544
 545    } else if (rPriv && dPriv == rPriv) {
 546
 547       ctx->r_stamp = ctx->d_stamp;
 548
 549    }
 550 }
 551
 552 void
 553 dri1_update_drawables(struct dri_context *ctx,
 554                       struct dri_drawable *draw, struct dri_drawable *read)
 555 {
 556    dri_lock(ctx);
 557    dri1_update_drawables_locked(ctx, draw->dPriv, read->dPriv);
 558    dri_unlock(ctx);
 559
 560    dri1_propagate_drawable_change(ctx);
 561 }
 562
 563 static INLINE boolean
 564 dri1_intersect_src_bbox(struct drm_clip_rect *dst,
 565                         int dst_x,
 566                         int dst_y,
 567                         const struct drm_clip_rect *src,
 568                         const struct drm_clip_rect *bbox)
 569 {
 570    int xy1;
 571    int xy2;
 572
 573    xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
 574       (int)bbox->x1 + dst_x;
 575    xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
 576       (int)bbox->x2 + dst_x;
 577    if (xy1 >= xy2 || xy1 < 0)
 578       return FALSE;
 579
 580    dst->x1 = xy1;
 581    dst->x2 = xy2;
 582
 583    xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
 584       (int)bbox->y1 + dst_y;
 585    xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
 586       (int)bbox->y2 + dst_y;
 587    if (xy1 >= xy2 || xy1 < 0)
 588       return FALSE;
 589
 590    dst->y1 = xy1;
 591    dst->y2 = xy2;
 592    return TRUE;
 593 }
 594
 595 static void
 596 dri1_swap_copy(struct dri_context *ctx,
 597                struct pipe_surface *dst,
 598                struct pipe_surface *src,
 599                __DRIdrawable * dPriv, const struct drm_clip_rect *bbox)
 600 {
 601    struct pipe_context *pipe = ctx->pipe;
 602    struct drm_clip_rect clip;
 603    struct drm_clip_rect *cur;
 604    int i;
 605
 606    cur = dPriv->pClipRects;
 607
 608    for (i = 0; i < dPriv->numClipRects; ++i) {
 609       if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox)) {
 610          if (pipe->surface_copy) {
 611             pipe->surface_copy(pipe, dst, clip.x1, clip.y1,
 612                                src,
 613                                (int)clip.x1 - dPriv->x,
 614                                (int)clip.y1 - dPriv->y,
 615                                clip.x2 - clip.x1, clip.y2 - clip.y1);
 616          } else {
 617             util_surface_copy(pipe, FALSE, dst, clip.x1, clip.y1,
 618                               src,
 619                               (int)clip.x1 - dPriv->x,
 620                               (int)clip.y1 - dPriv->y,
 621                               clip.x2 - clip.x1, clip.y2 - clip.y1);
 622          }
 623       }
 624    }
 625 }
 626
 627 static void
 628 dri1_copy_to_front(struct dri_context *ctx,
 629                    struct pipe_surface *surf,
 630                    __DRIdrawable * dPriv,
 631                    const struct drm_clip_rect *sub_box,
 632                    struct pipe_fence_handle **fence)
 633 {
 634    struct pipe_context *pipe = ctx->pipe;
 635    boolean save_lost_lock;
 636    uint cur_w;
 637    uint cur_h;
 638    struct drm_clip_rect bbox;
 639    boolean visible = TRUE;
 640
 641    *fence = NULL;
 642
 643    dri_lock(ctx);
 644    save_lost_lock = ctx->stLostLock;
 645    dri1_update_drawables_locked(ctx, dPriv, dPriv);
 646    st_get_framebuffer_dimensions(dri_drawable(dPriv)->stfb, &cur_w, &cur_h);
 647
 648    bbox.x1 = 0;
 649    bbox.x2 = cur_w;
 650    bbox.y1 = 0;
 651    bbox.y2 = cur_h;
 652
 653    if (sub_box)
 654       visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
 655
 656    if (visible && __dri1_api_hooks->present_locked) {
 657
 658       __dri1_api_hooks->present_locked(pipe,
 659                                        surf,
 660                                        dPriv->pClipRects,
 661                                        dPriv->numClipRects,
 662                                        dPriv->x, dPriv->y, &bbox, fence);
 663
 664    } else if (visible && __dri1_api_hooks->front_srf_locked) {
 665
 666       struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);
 667
 668       if (front)
 669          dri1_swap_copy(ctx, front, surf, dPriv, &bbox);
 670
 671       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, fence);
 672    }
 673
 674    ctx->stLostLock = save_lost_lock;
 675
 676    /**
 677     * FIXME: Revisit this: Update drawables on copy_sub_buffer ?
 678     */
 679
 680    if (!sub_box)
 681       dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);
 682
 683    dri_unlock(ctx);
 684    dri1_propagate_drawable_change(ctx);
 685 }
 686
 687 void
 688 dri1_flush_frontbuffer(struct pipe_screen *screen,
 689                        struct pipe_surface *surf, void *context_private)
 690 {
 691    struct dri_context *ctx = (struct dri_context *)context_private;
 692    struct pipe_fence_handle *dummy_fence;
 693
 694    dri1_copy_to_front(ctx, surf, ctx->dPriv, NULL, &dummy_fence);
 695    screen->fence_reference(screen, &dummy_fence, NULL);
 696
 697    /**
 698     * FIXME: Do we need swap throttling here?
 699     */
 700 }
 701
 702 void
 703 dri_swap_buffers(__DRIdrawable * dPriv)
 704 {
 705    struct dri_context *ctx;
 706    struct pipe_surface *back_surf;
 707    struct dri_drawable *draw = dri_drawable(dPriv);
 708    struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
 709    struct pipe_fence_handle *fence;
 710    struct st_context *st = st_get_current();
 711
 712    assert(__dri1_api_hooks != NULL);
 713
 714    if (!st)
 715       return;                          /* For now */
 716
 717    ctx = (struct dri_context *)st->pipe->priv;
 718
 719    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 720    if (back_surf) {
 721       st_notify_swapbuffers(draw->stfb);
 722       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 723       fence = dri_swap_fences_pop_front(draw);
 724       if (fence) {
 725          (void)screen->fence_finish(screen, fence, 0);
 726          screen->fence_reference(screen, &fence, NULL);
 727       }
 728       dri1_copy_to_front(ctx, back_surf, dPriv, NULL, &fence);
 729       dri_swap_fences_push_back(draw, fence);
 730       screen->fence_reference(screen, &fence, NULL);
 731    }
 732 }
 733
 734 void
 735 dri_copy_sub_buffer(__DRIdrawable * dPriv, int x, int y, int w, int h)
 736 {
 737    struct pipe_screen *screen = dri_screen(dPriv->driScreenPriv)->pipe_screen;
 738    struct drm_clip_rect sub_bbox;
 739    struct dri_context *ctx;
 740    struct pipe_surface *back_surf;
 741    struct dri_drawable *draw = dri_drawable(dPriv);
 742    struct pipe_fence_handle *dummy_fence;
 743    struct st_context *st = st_get_current();
 744
 745    assert(__dri1_api_hooks != NULL);
 746
 747    if (!st)
 748       return;
 749
 750    ctx = (struct dri_context *)st->pipe->priv;
 751
 752    sub_bbox.x1 = x;
 753    sub_bbox.x2 = x + w;
 754    sub_bbox.y1 = y;
 755    sub_bbox.y2 = y + h;
 756
 757    st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 758    if (back_surf) {
 759       st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 760       dri1_copy_to_front(ctx, back_surf, dPriv, &sub_bbox, &dummy_fence);
 761       screen->fence_reference(screen, &dummy_fence, NULL);
 762    }
 763 }
 764
 765 /* vim: set sw=3 ts=8 sts=3 expandtab: */