src/mesa/state_tracker/st_manager.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 2010 LunarG Inc.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Chia-I Wu <olv@lunarg.com>
  26  */
  27
  28 #include "main/mtypes.h"
  29 #include "main/extensions.h"
  30 #include "main/context.h"
  31 #include "main/debug_output.h"
  32 #include "main/glthread.h"
  33 #include "main/texobj.h"
  34 #include "main/teximage.h"
  35 #include "main/texstate.h"
  36 #include "main/errors.h"
  37 #include "main/framebuffer.h"
  38 #include "main/fbobject.h"
  39 #include "main/renderbuffer.h"
  40 #include "main/version.h"
  41 #include "util/hash_table.h"
  42 #include "st_texture.h"
  43
  44 #include "st_context.h"
  45 #include "st_debug.h"
  46 #include "st_extensions.h"
  47 #include "st_format.h"
  48 #include "st_cb_bitmap.h"
  49 #include "st_cb_fbo.h"
  50 #include "st_cb_flush.h"
  51 #include "st_manager.h"
  52 #include "st_sampler_view.h"
  53
  54 #include "state_tracker/st_gl_api.h"
  55
  56 #include "pipe/p_context.h"
  57 #include "pipe/p_screen.h"
  58 #include "util/u_format.h"
  59 #include "util/u_helpers.h"
  60 #include "util/u_pointer.h"
  61 #include "util/u_inlines.h"
  62 #include "util/u_atomic.h"
  63 #include "util/u_surface.h"
  64 #include "util/list.h"
  65
  66 struct hash_table;
  67 struct st_manager_private
  68 {
  69    struct hash_table *stfbi_ht; /* framebuffer iface objects hash table */
  70    mtx_t st_mutex;
  71 };
  72
  73
  74 /**
  75  * Map an attachment to a buffer index.
  76  */
  77 static inline gl_buffer_index
  78 attachment_to_buffer_index(enum st_attachment_type statt)
  79 {
  80    gl_buffer_index index;
  81
  82    switch (statt) {
  83    case ST_ATTACHMENT_FRONT_LEFT:
  84       index = BUFFER_FRONT_LEFT;
  85       break;
  86    case ST_ATTACHMENT_BACK_LEFT:
  87       index = BUFFER_BACK_LEFT;
  88       break;
  89    case ST_ATTACHMENT_FRONT_RIGHT:
  90       index = BUFFER_FRONT_RIGHT;
  91       break;
  92    case ST_ATTACHMENT_BACK_RIGHT:
  93       index = BUFFER_BACK_RIGHT;
  94       break;
  95    case ST_ATTACHMENT_DEPTH_STENCIL:
  96       index = BUFFER_DEPTH;
  97       break;
  98    case ST_ATTACHMENT_ACCUM:
  99       index = BUFFER_ACCUM;
 100       break;
 101    case ST_ATTACHMENT_SAMPLE:
 102    default:
 103       index = BUFFER_COUNT;
 104       break;
 105    }
 106
 107    return index;
 108 }
 109
 110
 111 /**
 112  * Map a buffer index to an attachment.
 113  */
 114 static inline enum st_attachment_type
 115 buffer_index_to_attachment(gl_buffer_index index)
 116 {
 117    enum st_attachment_type statt;
 118
 119    switch (index) {
 120    case BUFFER_FRONT_LEFT:
 121       statt = ST_ATTACHMENT_FRONT_LEFT;
 122       break;
 123    case BUFFER_BACK_LEFT:
 124       statt = ST_ATTACHMENT_BACK_LEFT;
 125       break;
 126    case BUFFER_FRONT_RIGHT:
 127       statt = ST_ATTACHMENT_FRONT_RIGHT;
 128       break;
 129    case BUFFER_BACK_RIGHT:
 130       statt = ST_ATTACHMENT_BACK_RIGHT;
 131       break;
 132    case BUFFER_DEPTH:
 133       statt = ST_ATTACHMENT_DEPTH_STENCIL;
 134       break;
 135    case BUFFER_ACCUM:
 136       statt = ST_ATTACHMENT_ACCUM;
 137       break;
 138    default:
 139       statt = ST_ATTACHMENT_INVALID;
 140       break;
 141    }
 142
 143    return statt;
 144 }
 145
 146
 147 /**
 148  * Make sure a context picks up the latest cached state of the
 149  * drawables it binds to.
 150  */
 151 static void
 152 st_context_validate(struct st_context *st,
 153                     struct st_framebuffer *stdraw,
 154                     struct st_framebuffer *stread)
 155 {
 156     if (stdraw && stdraw->stamp != st->draw_stamp) {
 157        st->dirty |= ST_NEW_FRAMEBUFFER;
 158        _mesa_resize_framebuffer(st->ctx, &stdraw->Base,
 159                                 stdraw->Base.Width,
 160                                 stdraw->Base.Height);
 161        st->draw_stamp = stdraw->stamp;
 162     }
 163
 164     if (stread && stread->stamp != st->read_stamp) {
 165        if (stread != stdraw) {
 166           st->dirty |= ST_NEW_FRAMEBUFFER;
 167           _mesa_resize_framebuffer(st->ctx, &stread->Base,
 168                                    stread->Base.Width,
 169                                    stread->Base.Height);
 170        }
 171        st->read_stamp = stread->stamp;
 172     }
 173 }
 174
 175
 176 /**
 177  * Validate a framebuffer to make sure up-to-date pipe_textures are used.
 178  * The context is only used for creating pipe surfaces and for calling
 179  * _mesa_resize_framebuffer().
 180  * (That should probably be rethought, since those surfaces become
 181  * drawable state, not context state, and can be freed by another pipe
 182  * context).
 183  */
 184 static void
 185 st_framebuffer_validate(struct st_framebuffer *stfb,
 186                         struct st_context *st)
 187 {
 188    struct pipe_resource *textures[ST_ATTACHMENT_COUNT];
 189    uint width, height;
 190    unsigned i;
 191    boolean changed = FALSE;
 192    int32_t new_stamp;
 193
 194    new_stamp = p_atomic_read(&stfb->iface->stamp);
 195    if (stfb->iface_stamp == new_stamp)
 196       return;
 197
 198    memset(textures, 0, stfb->num_statts * sizeof(textures[0]));
 199
 200    /* validate the fb */
 201    do {
 202       if (!stfb->iface->validate(&st->iface, stfb->iface, stfb->statts,
 203                                  stfb->num_statts, textures))
 204          return;
 205
 206       stfb->iface_stamp = new_stamp;
 207       new_stamp = p_atomic_read(&stfb->iface->stamp);
 208    } while(stfb->iface_stamp != new_stamp);
 209
 210    width = stfb->Base.Width;
 211    height = stfb->Base.Height;
 212
 213    for (i = 0; i < stfb->num_statts; i++) {
 214       struct st_renderbuffer *strb;
 215       struct pipe_surface *ps, surf_tmpl;
 216       gl_buffer_index idx;
 217
 218       if (!textures[i])
 219          continue;
 220
 221       idx = attachment_to_buffer_index(stfb->statts[i]);
 222       if (idx >= BUFFER_COUNT) {
 223          pipe_resource_reference(&textures[i], NULL);
 224          continue;
 225       }
 226
 227       strb = st_renderbuffer(stfb->Base.Attachment[idx].Renderbuffer);
 228       assert(strb);
 229       if (strb->texture == textures[i]) {
 230          pipe_resource_reference(&textures[i], NULL);
 231          continue;
 232       }
 233
 234       u_surface_default_template(&surf_tmpl, textures[i]);
 235       ps = st->pipe->create_surface(st->pipe, textures[i], &surf_tmpl);
 236       if (ps) {
 237          struct pipe_surface **psurf =
 238             util_format_is_srgb(ps->format) ? &strb->surface_srgb :
 239                                               &strb->surface_linear;
 240
 241          pipe_surface_reference(psurf, ps);
 242          strb->surface = *psurf;
 243          pipe_resource_reference(&strb->texture, ps->texture);
 244          /* ownership transfered */
 245          pipe_surface_reference(&ps, NULL);
 246
 247          changed = TRUE;
 248
 249          strb->Base.Width = strb->surface->width;
 250          strb->Base.Height = strb->surface->height;
 251
 252          width = strb->Base.Width;
 253          height = strb->Base.Height;
 254       }
 255
 256       pipe_resource_reference(&textures[i], NULL);
 257    }
 258
 259    if (changed) {
 260       ++stfb->stamp;
 261       _mesa_resize_framebuffer(st->ctx, &stfb->Base, width, height);
 262    }
 263 }
 264
 265
 266 /**
 267  * Update the attachments to validate by looping the existing renderbuffers.
 268  */
 269 static void
 270 st_framebuffer_update_attachments(struct st_framebuffer *stfb)
 271 {
 272    gl_buffer_index idx;
 273
 274    stfb->num_statts = 0;
 275    for (idx = 0; idx < BUFFER_COUNT; idx++) {
 276       struct st_renderbuffer *strb;
 277       enum st_attachment_type statt;
 278
 279       strb = st_renderbuffer(stfb->Base.Attachment[idx].Renderbuffer);
 280       if (!strb || strb->software)
 281          continue;
 282
 283       statt = buffer_index_to_attachment(idx);
 284       if (statt != ST_ATTACHMENT_INVALID &&
 285           st_visual_have_buffers(stfb->iface->visual, 1 << statt))
 286          stfb->statts[stfb->num_statts++] = statt;
 287    }
 288    stfb->stamp++;
 289 }
 290
 291
 292 /**
 293  * Add a renderbuffer to the framebuffer.  The framebuffer is one that
 294  * corresponds to a window and is not a user-created FBO.
 295  */
 296 static boolean
 297 st_framebuffer_add_renderbuffer(struct st_framebuffer *stfb,
 298                                 gl_buffer_index idx)
 299 {
 300    struct gl_renderbuffer *rb;
 301    enum pipe_format format;
 302    boolean sw;
 303
 304    assert(_mesa_is_winsys_fbo(&stfb->Base));
 305
 306    /* do not distinguish depth/stencil buffers */
 307    if (idx == BUFFER_STENCIL)
 308       idx = BUFFER_DEPTH;
 309
 310    switch (idx) {
 311    case BUFFER_DEPTH:
 312       format = stfb->iface->visual->depth_stencil_format;
 313       sw = FALSE;
 314       break;
 315    case BUFFER_ACCUM:
 316       format = stfb->iface->visual->accum_format;
 317       sw = TRUE;
 318       break;
 319    default:
 320       format = stfb->iface->visual->color_format;
 321       if (stfb->Base.Visual.sRGBCapable)
 322          format = util_format_srgb(format);
 323       sw = FALSE;
 324       break;
 325    }
 326
 327    if (format == PIPE_FORMAT_NONE)
 328       return FALSE;
 329
 330    rb = st_new_renderbuffer_fb(format, stfb->iface->visual->samples, sw);
 331    if (!rb)
 332       return FALSE;
 333
 334    if (idx != BUFFER_DEPTH) {
 335       _mesa_attach_and_own_rb(&stfb->Base, idx, rb);
 336       return TRUE;
 337    }
 338
 339    bool rb_ownership_taken = false;
 340    if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 0)) {
 341       _mesa_attach_and_own_rb(&stfb->Base, BUFFER_DEPTH, rb);
 342       rb_ownership_taken = true;
 343    }
 344
 345    if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1)) {
 346       if (rb_ownership_taken)
 347          _mesa_attach_and_reference_rb(&stfb->Base, BUFFER_STENCIL, rb);
 348       else
 349          _mesa_attach_and_own_rb(&stfb->Base, BUFFER_STENCIL, rb);
 350    }
 351
 352    return TRUE;
 353 }
 354
 355
 356 /**
 357  * Intialize a struct gl_config from a visual.
 358  */
 359 static void
 360 st_visual_to_context_mode(const struct st_visual *visual,
 361                           struct gl_config *mode)
 362 {
 363    memset(mode, 0, sizeof(*mode));
 364
 365    if (st_visual_have_buffers(visual, ST_ATTACHMENT_BACK_LEFT_MASK))
 366       mode->doubleBufferMode = GL_TRUE;
 367
 368    if (st_visual_have_buffers(visual,
 369             ST_ATTACHMENT_FRONT_RIGHT_MASK | ST_ATTACHMENT_BACK_RIGHT_MASK))
 370       mode->stereoMode = GL_TRUE;
 371
 372    if (visual->color_format != PIPE_FORMAT_NONE) {
 373       mode->rgbMode = GL_TRUE;
 374
 375       mode->redBits =
 376          util_format_get_component_bits(visual->color_format,
 377                UTIL_FORMAT_COLORSPACE_RGB, 0);
 378       mode->greenBits =
 379          util_format_get_component_bits(visual->color_format,
 380                UTIL_FORMAT_COLORSPACE_RGB, 1);
 381       mode->blueBits =
 382          util_format_get_component_bits(visual->color_format,
 383                UTIL_FORMAT_COLORSPACE_RGB, 2);
 384       mode->alphaBits =
 385          util_format_get_component_bits(visual->color_format,
 386                UTIL_FORMAT_COLORSPACE_RGB, 3);
 387
 388       mode->rgbBits = mode->redBits +
 389          mode->greenBits + mode->blueBits + mode->alphaBits;
 390       mode->sRGBCapable = util_format_is_srgb(visual->color_format);
 391    }
 392
 393    if (visual->depth_stencil_format != PIPE_FORMAT_NONE) {
 394       mode->depthBits =
 395          util_format_get_component_bits(visual->depth_stencil_format,
 396                UTIL_FORMAT_COLORSPACE_ZS, 0);
 397       mode->stencilBits =
 398          util_format_get_component_bits(visual->depth_stencil_format,
 399                UTIL_FORMAT_COLORSPACE_ZS, 1);
 400
 401       mode->haveDepthBuffer = mode->depthBits > 0;
 402       mode->haveStencilBuffer = mode->stencilBits > 0;
 403    }
 404
 405    if (visual->accum_format != PIPE_FORMAT_NONE) {
 406       mode->haveAccumBuffer = GL_TRUE;
 407
 408       mode->accumRedBits =
 409          util_format_get_component_bits(visual->accum_format,
 410                UTIL_FORMAT_COLORSPACE_RGB, 0);
 411       mode->accumGreenBits =
 412          util_format_get_component_bits(visual->accum_format,
 413                UTIL_FORMAT_COLORSPACE_RGB, 1);
 414       mode->accumBlueBits =
 415          util_format_get_component_bits(visual->accum_format,
 416                UTIL_FORMAT_COLORSPACE_RGB, 2);
 417       mode->accumAlphaBits =
 418          util_format_get_component_bits(visual->accum_format,
 419                UTIL_FORMAT_COLORSPACE_RGB, 3);
 420    }
 421
 422    if (visual->samples > 1) {
 423       mode->sampleBuffers = 1;
 424       mode->samples = visual->samples;
 425    }
 426 }
 427
 428
 429 /**
 430  * Create a framebuffer from a manager interface.
 431  */
 432 static struct st_framebuffer *
 433 st_framebuffer_create(struct st_context *st,
 434                       struct st_framebuffer_iface *stfbi)
 435 {
 436    struct st_framebuffer *stfb;
 437    struct gl_config mode;
 438    gl_buffer_index idx;
 439
 440    if (!stfbi)
 441       return NULL;
 442
 443    stfb = CALLOC_STRUCT(st_framebuffer);
 444    if (!stfb)
 445       return NULL;
 446
 447    st_visual_to_context_mode(stfbi->visual, &mode);
 448
 449    /*
 450     * For desktop GL, sRGB framebuffer write is controlled by both the
 451     * capability of the framebuffer and GL_FRAMEBUFFER_SRGB.  We should
 452     * advertise the capability when the pipe driver (and core Mesa) supports
 453     * it so that applications can enable sRGB write when they want to.
 454     *
 455     * This is not to be confused with GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB.  When
 456     * the attribute is GLX_TRUE, it tells the st manager to pick a color
 457     * format such that util_format_srgb(visual->color_format) can be supported
 458     * by the pipe driver.  We still need to advertise the capability here.
 459     *
 460     * For GLES, however, sRGB framebuffer write is controlled only by the
 461     * capability of the framebuffer.  There is GL_EXT_sRGB_write_control to
 462     * give applications the control back, but sRGB write is still enabled by
 463     * default.  To avoid unexpected results, we should not advertise the
 464     * capability.  This could change when we add support for
 465     * EGL_KHR_gl_colorspace.
 466     */
 467    if (_mesa_is_desktop_gl(st->ctx)) {
 468       struct pipe_screen *screen = st->pipe->screen;
 469       const enum pipe_format srgb_format =
 470          util_format_srgb(stfbi->visual->color_format);
 471
 472       if (srgb_format != PIPE_FORMAT_NONE &&
 473           st_pipe_format_to_mesa_format(srgb_format) != MESA_FORMAT_NONE &&
 474           screen->is_format_supported(screen, srgb_format,
 475                                       PIPE_TEXTURE_2D, stfbi->visual->samples,
 476                                       stfbi->visual->samples,
 477                                       (PIPE_BIND_DISPLAY_TARGET |
 478                                        PIPE_BIND_RENDER_TARGET)))
 479          mode.sRGBCapable = GL_TRUE;
 480    }
 481
 482    _mesa_initialize_window_framebuffer(&stfb->Base, &mode);
 483
 484    stfb->iface = stfbi;
 485    stfb->iface_ID = stfbi->ID;
 486    stfb->iface_stamp = p_atomic_read(&stfbi->stamp) - 1;
 487
 488    /* add the color buffer */
 489    idx = stfb->Base._ColorDrawBufferIndexes[0];
 490    if (!st_framebuffer_add_renderbuffer(stfb, idx)) {
 491       free(stfb);
 492       return NULL;
 493    }
 494
 495    st_framebuffer_add_renderbuffer(stfb, BUFFER_DEPTH);
 496    st_framebuffer_add_renderbuffer(stfb, BUFFER_ACCUM);
 497
 498    stfb->stamp = 0;
 499    st_framebuffer_update_attachments(stfb);
 500
 501    return stfb;
 502 }
 503
 504
 505 /**
 506  * Reference a framebuffer.
 507  */
 508 void
 509 st_framebuffer_reference(struct st_framebuffer **ptr,
 510                          struct st_framebuffer *stfb)
 511 {
 512    struct gl_framebuffer *fb = &stfb->Base;
 513    _mesa_reference_framebuffer((struct gl_framebuffer **) ptr, fb);
 514 }
 515
 516
 517 static uint32_t
 518 st_framebuffer_iface_hash(const void *key)
 519 {
 520    return (uintptr_t)key;
 521 }
 522
 523
 524 static bool
 525 st_framebuffer_iface_equal(const void *a, const void *b)
 526 {
 527    return (struct st_framebuffer_iface *)a == (struct st_framebuffer_iface *)b;
 528 }
 529
 530
 531 static boolean
 532 st_framebuffer_iface_lookup(struct st_manager *smapi,
 533                             const struct st_framebuffer_iface *stfbi)
 534 {
 535    struct st_manager_private *smPriv =
 536       (struct st_manager_private *)smapi->st_manager_private;
 537    struct hash_entry *entry;
 538
 539    assert(smPriv);
 540    assert(smPriv->stfbi_ht);
 541
 542    mtx_lock(&smPriv->st_mutex);
 543    entry = _mesa_hash_table_search(smPriv->stfbi_ht, stfbi);
 544    mtx_unlock(&smPriv->st_mutex);
 545
 546    return entry != NULL;
 547 }
 548
 549
 550 static boolean
 551 st_framebuffer_iface_insert(struct st_manager *smapi,
 552                             struct st_framebuffer_iface *stfbi)
 553 {
 554    struct st_manager_private *smPriv =
 555       (struct st_manager_private *)smapi->st_manager_private;
 556    struct hash_entry *entry;
 557
 558    assert(smPriv);
 559    assert(smPriv->stfbi_ht);
 560
 561    mtx_lock(&smPriv->st_mutex);
 562    entry = _mesa_hash_table_insert(smPriv->stfbi_ht, stfbi, stfbi);
 563    mtx_unlock(&smPriv->st_mutex);
 564
 565    return entry != NULL;
 566 }
 567
 568
 569 static void
 570 st_framebuffer_iface_remove(struct st_manager *smapi,
 571                             struct st_framebuffer_iface *stfbi)
 572 {
 573    struct st_manager_private *smPriv =
 574       (struct st_manager_private *)smapi->st_manager_private;
 575    struct hash_entry *entry;
 576
 577    if (!smPriv || !smPriv->stfbi_ht)
 578       return;
 579
 580    mtx_lock(&smPriv->st_mutex);
 581    entry = _mesa_hash_table_search(smPriv->stfbi_ht, stfbi);
 582    if (!entry)
 583       goto unlock;
 584
 585    _mesa_hash_table_remove(smPriv->stfbi_ht, entry);
 586
 587 unlock:
 588    mtx_unlock(&smPriv->st_mutex);
 589 }
 590
 591
 592 /**
 593  * The framebuffer interface object is no longer valid.
 594  * Remove the object from the framebuffer interface hash table.
 595  */
 596 static void
 597 st_api_destroy_drawable(struct st_api *stapi,
 598                         struct st_framebuffer_iface *stfbi)
 599 {
 600    if (!stfbi)
 601       return;
 602
 603    st_framebuffer_iface_remove(stfbi->state_manager, stfbi);
 604 }
 605
 606
 607 /**
 608  * Purge the winsys buffers list to remove any references to
 609  * non-existing framebuffer interface objects.
 610  */
 611 static void
 612 st_framebuffers_purge(struct st_context *st)
 613 {
 614    struct st_context_iface *st_iface = &st->iface;
 615    struct st_manager *smapi = st_iface->state_manager;
 616    struct st_framebuffer *stfb, *next;
 617
 618    assert(smapi);
 619
 620    LIST_FOR_EACH_ENTRY_SAFE_REV(stfb, next, &st->winsys_buffers, head) {
 621       struct st_framebuffer_iface *stfbi = stfb->iface;
 622
 623       assert(stfbi);
 624
 625       /**
 626        * If the corresponding framebuffer interface object no longer exists,
 627        * remove the framebuffer object from the context's winsys buffers list,
 628        * and unreference the framebuffer object, so its resources can be
 629        * deleted.
 630        */
 631       if (!st_framebuffer_iface_lookup(smapi, stfbi)) {
 632          LIST_DEL(&stfb->head);
 633          st_framebuffer_reference(&stfb, NULL);
 634       }
 635    }
 636 }
 637
 638
 639 static void
 640 st_context_flush(struct st_context_iface *stctxi, unsigned flags,
 641                  struct pipe_fence_handle **fence)
 642 {
 643    struct st_context *st = (struct st_context *) stctxi;
 644    unsigned pipe_flags = 0;
 645
 646    if (flags & ST_FLUSH_END_OF_FRAME)
 647       pipe_flags |= PIPE_FLUSH_END_OF_FRAME;
 648    if (flags & ST_FLUSH_FENCE_FD)
 649       pipe_flags |= PIPE_FLUSH_FENCE_FD;
 650
 651    FLUSH_VERTICES(st->ctx, 0);
 652    FLUSH_CURRENT(st->ctx, 0);
 653    st_flush(st, fence, pipe_flags);
 654
 655    if ((flags & ST_FLUSH_WAIT) && fence && *fence) {
 656       st->pipe->screen->fence_finish(st->pipe->screen, NULL, *fence,
 657                                      PIPE_TIMEOUT_INFINITE);
 658       st->pipe->screen->fence_reference(st->pipe->screen, fence, NULL);
 659    }
 660
 661    if (flags & ST_FLUSH_FRONT)
 662       st_manager_flush_frontbuffer(st);
 663
 664    /* DRI3 changes the framebuffer after SwapBuffers, but we need to invoke
 665     * st_manager_validate_framebuffers to notice that.
 666     *
 667     * Set gfx_shaders_may_be_dirty to invoke st_validate_state in the next
 668     * draw call, which will invoke st_manager_validate_framebuffers, but it
 669     * won't dirty states if there is no change.
 670     */
 671    if (flags & ST_FLUSH_END_OF_FRAME)
 672       st->gfx_shaders_may_be_dirty = true;
 673 }
 674
 675 static boolean
 676 st_context_teximage(struct st_context_iface *stctxi,
 677                     enum st_texture_type tex_type,
 678                     int level, enum pipe_format pipe_format,
 679                     struct pipe_resource *tex, boolean mipmap)
 680 {
 681    struct st_context *st = (struct st_context *) stctxi;
 682    struct gl_context *ctx = st->ctx;
 683    struct gl_texture_object *texObj;
 684    struct gl_texture_image *texImage;
 685    struct st_texture_object *stObj;
 686    struct st_texture_image *stImage;
 687    GLenum internalFormat;
 688    GLuint width, height, depth;
 689    GLenum target;
 690
 691    switch (tex_type) {
 692    case ST_TEXTURE_1D:
 693       target = GL_TEXTURE_1D;
 694       break;
 695    case ST_TEXTURE_2D:
 696       target = GL_TEXTURE_2D;
 697       break;
 698    case ST_TEXTURE_3D:
 699       target = GL_TEXTURE_3D;
 700       break;
 701    case ST_TEXTURE_RECT:
 702       target = GL_TEXTURE_RECTANGLE_ARB;
 703       break;
 704    default:
 705       return FALSE;
 706    }
 707
 708    texObj = _mesa_get_current_tex_object(ctx, target);
 709
 710    _mesa_lock_texture(ctx, texObj);
 711
 712    stObj = st_texture_object(texObj);
 713    /* switch to surface based */
 714    if (!stObj->surface_based) {
 715       _mesa_clear_texture_object(ctx, texObj, NULL);
 716       stObj->surface_based = GL_TRUE;
 717    }
 718
 719    texImage = _mesa_get_tex_image(ctx, texObj, target, level);
 720    stImage = st_texture_image(texImage);
 721    if (tex) {
 722       mesa_format texFormat = st_pipe_format_to_mesa_format(pipe_format);
 723
 724       if (util_format_has_alpha(tex->format))
 725          internalFormat = GL_RGBA;
 726       else
 727          internalFormat = GL_RGB;
 728
 729       _mesa_init_teximage_fields(ctx, texImage,
 730                                  tex->width0, tex->height0, 1, 0,
 731                                  internalFormat, texFormat);
 732
 733       width = tex->width0;
 734       height = tex->height0;
 735       depth = tex->depth0;
 736
 737       /* grow the image size until we hit level = 0 */
 738       while (level > 0) {
 739          if (width != 1)
 740             width <<= 1;
 741          if (height != 1)
 742             height <<= 1;
 743          if (depth != 1)
 744             depth <<= 1;
 745          level--;
 746       }
 747    }
 748    else {
 749       _mesa_clear_texture_image(ctx, texImage);
 750       width = height = depth = 0;
 751    }
 752
 753    pipe_resource_reference(&stObj->pt, tex);
 754    st_texture_release_all_sampler_views(st, stObj);
 755    pipe_resource_reference(&stImage->pt, tex);
 756    stObj->surface_format = pipe_format;
 757
 758    stObj->needs_validation = true;
 759
 760    _mesa_dirty_texobj(ctx, texObj);
 761    _mesa_unlock_texture(ctx, texObj);
 762
 763    return TRUE;
 764 }
 765
 766
 767 static void
 768 st_context_copy(struct st_context_iface *stctxi,
 769                 struct st_context_iface *stsrci, unsigned mask)
 770 {
 771    struct st_context *st = (struct st_context *) stctxi;
 772    struct st_context *src = (struct st_context *) stsrci;
 773
 774    _mesa_copy_context(src->ctx, st->ctx, mask);
 775 }
 776
 777
 778 static boolean
 779 st_context_share(struct st_context_iface *stctxi,
 780                  struct st_context_iface *stsrci)
 781 {
 782    struct st_context *st = (struct st_context *) stctxi;
 783    struct st_context *src = (struct st_context *) stsrci;
 784
 785    return _mesa_share_state(st->ctx, src->ctx);
 786 }
 787
 788
 789 static void
 790 st_context_destroy(struct st_context_iface *stctxi)
 791 {
 792    struct st_context *st = (struct st_context *) stctxi;
 793    st_destroy_context(st);
 794 }
 795
 796
 797 static void
 798 st_start_thread(struct st_context_iface *stctxi)
 799 {
 800    struct st_context *st = (struct st_context *) stctxi;
 801
 802    _mesa_glthread_init(st->ctx);
 803
 804    /* Pin all driver threads to one L3 cache for optimal performance
 805     * on AMD Zen. This is only done if glthread is enabled.
 806     *
 807     * If glthread is disabled, st_draw.c re-pins driver threads regularly
 808     * based on the location of the app thread.
 809     */
 810    struct glthread_state *glthread = st->ctx->GLThread;
 811    if (glthread && st->pipe->set_context_param) {
 812       util_pin_driver_threads_to_random_L3(st->pipe, &glthread->queue.threads[0]);
 813    }
 814 }
 815
 816
 817 static void
 818 st_thread_finish(struct st_context_iface *stctxi)
 819 {
 820    struct st_context *st = (struct st_context *) stctxi;
 821
 822    _mesa_glthread_finish(st->ctx);
 823 }
 824
 825
 826 static void
 827 st_manager_destroy(struct st_manager *smapi)
 828 {
 829    struct st_manager_private *smPriv = smapi->st_manager_private;
 830
 831    if (smPriv && smPriv->stfbi_ht) {
 832       _mesa_hash_table_destroy(smPriv->stfbi_ht, NULL);
 833       mtx_destroy(&smPriv->st_mutex);
 834       free(smPriv);
 835       smapi->st_manager_private = NULL;
 836    }
 837 }
 838
 839
 840 static struct st_context_iface *
 841 st_api_create_context(struct st_api *stapi, struct st_manager *smapi,
 842                       const struct st_context_attribs *attribs,
 843                       enum st_context_error *error,
 844                       struct st_context_iface *shared_stctxi)
 845 {
 846    struct st_context *shared_ctx = (struct st_context *) shared_stctxi;
 847    struct st_context *st;
 848    struct pipe_context *pipe;
 849    struct gl_config* mode_ptr;
 850    struct gl_config mode;
 851    gl_api api;
 852    bool no_error = false;
 853    unsigned ctx_flags = PIPE_CONTEXT_PREFER_THREADED;
 854
 855    if (!(stapi->profile_mask & (1 << attribs->profile)))
 856       return NULL;
 857
 858    switch (attribs->profile) {
 859    case ST_PROFILE_DEFAULT:
 860       api = API_OPENGL_COMPAT;
 861       break;
 862    case ST_PROFILE_OPENGL_ES1:
 863       api = API_OPENGLES;
 864       break;
 865    case ST_PROFILE_OPENGL_ES2:
 866       api = API_OPENGLES2;
 867       break;
 868    case ST_PROFILE_OPENGL_CORE:
 869       api = API_OPENGL_CORE;
 870       break;
 871    default:
 872       *error = ST_CONTEXT_ERROR_BAD_API;
 873       return NULL;
 874    }
 875
 876    /* Create a hash table for the framebuffer interface objects
 877     * if it has not been created for this st manager.
 878     */
 879    if (smapi->st_manager_private == NULL) {
 880       struct st_manager_private *smPriv;
 881
 882       smPriv = CALLOC_STRUCT(st_manager_private);
 883       mtx_init(&smPriv->st_mutex, mtx_plain);
 884       smPriv->stfbi_ht = _mesa_hash_table_create(NULL,
 885                                                  st_framebuffer_iface_hash,
 886                                                  st_framebuffer_iface_equal);
 887       smapi->st_manager_private = smPriv;
 888       smapi->destroy = st_manager_destroy;
 889    }
 890
 891    if (attribs->flags & ST_CONTEXT_FLAG_ROBUST_ACCESS)
 892       ctx_flags |= PIPE_CONTEXT_ROBUST_BUFFER_ACCESS;
 893
 894    if (attribs->flags & ST_CONTEXT_FLAG_NO_ERROR)
 895       no_error = true;
 896
 897    if (attribs->flags & ST_CONTEXT_FLAG_LOW_PRIORITY)
 898       ctx_flags |= PIPE_CONTEXT_LOW_PRIORITY;
 899    else if (attribs->flags & ST_CONTEXT_FLAG_HIGH_PRIORITY)
 900       ctx_flags |= PIPE_CONTEXT_HIGH_PRIORITY;
 901
 902    if (attribs->flags & ST_CONTEXT_FLAG_RESET_NOTIFICATION_ENABLED)
 903       ctx_flags |= PIPE_CONTEXT_LOSE_CONTEXT_ON_RESET;
 904
 905    pipe = smapi->screen->context_create(smapi->screen, NULL, ctx_flags);
 906    if (!pipe) {
 907       *error = ST_CONTEXT_ERROR_NO_MEMORY;
 908       return NULL;
 909    }
 910
 911    st_visual_to_context_mode(&attribs->visual, &mode);
 912
 913    if (attribs->visual.no_config)
 914       mode_ptr = NULL;
 915    else
 916       mode_ptr = &mode;
 917
 918    st = st_create_context(api, pipe, mode_ptr, shared_ctx,
 919                           &attribs->options, no_error);
 920    if (!st) {
 921       *error = ST_CONTEXT_ERROR_NO_MEMORY;
 922       pipe->destroy(pipe);
 923       return NULL;
 924    }
 925
 926    if (attribs->flags & ST_CONTEXT_FLAG_DEBUG) {
 927       if (!_mesa_set_debug_state_int(st->ctx, GL_DEBUG_OUTPUT, GL_TRUE)) {
 928          *error = ST_CONTEXT_ERROR_NO_MEMORY;
 929          return NULL;
 930       }
 931
 932       st->ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_DEBUG_BIT;
 933    }
 934
 935    if (st->ctx->Const.ContextFlags & GL_CONTEXT_FLAG_DEBUG_BIT) {
 936       st_update_debug_callback(st);
 937    }
 938
 939    if (attribs->flags & ST_CONTEXT_FLAG_FORWARD_COMPATIBLE)
 940       st->ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT;
 941    if (attribs->flags & ST_CONTEXT_FLAG_ROBUST_ACCESS) {
 942       st->ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB;
 943       st->ctx->Const.RobustAccess = GL_TRUE;
 944    }
 945    if (attribs->flags & ST_CONTEXT_FLAG_RESET_NOTIFICATION_ENABLED) {
 946       st->ctx->Const.ResetStrategy = GL_LOSE_CONTEXT_ON_RESET_ARB;
 947       st_install_device_reset_callback(st);
 948    }
 949
 950    if (attribs->flags & ST_CONTEXT_FLAG_RELEASE_NONE)
 951        st->ctx->Const.ContextReleaseBehavior = GL_NONE;
 952
 953    /* need to perform version check */
 954    if (attribs->major > 1 || attribs->minor > 0) {
 955       /* Is the actual version less than the requested version?
 956        */
 957       if (st->ctx->Version < attribs->major * 10U + attribs->minor) {
 958          *error = ST_CONTEXT_ERROR_BAD_VERSION;
 959          st_destroy_context(st);
 960          return NULL;
 961       }
 962    }
 963
 964    st->invalidate_on_gl_viewport =
 965       smapi->get_param(smapi, ST_MANAGER_BROKEN_INVALIDATE);
 966
 967    st->iface.destroy = st_context_destroy;
 968    st->iface.flush = st_context_flush;
 969    st->iface.teximage = st_context_teximage;
 970    st->iface.copy = st_context_copy;
 971    st->iface.share = st_context_share;
 972    st->iface.start_thread = st_start_thread;
 973    st->iface.thread_finish = st_thread_finish;
 974    st->iface.st_context_private = (void *) smapi;
 975    st->iface.cso_context = st->cso_context;
 976    st->iface.pipe = st->pipe;
 977    st->iface.state_manager = smapi;
 978
 979    *error = ST_CONTEXT_SUCCESS;
 980    return &st->iface;
 981 }
 982
 983
 984 static struct st_context_iface *
 985 st_api_get_current(struct st_api *stapi)
 986 {
 987    GET_CURRENT_CONTEXT(ctx);
 988    struct st_context *st = ctx ? ctx->st : NULL;
 989
 990    return st ? &st->iface : NULL;
 991 }
 992
 993
 994 static struct st_framebuffer *
 995 st_framebuffer_reuse_or_create(struct st_context *st,
 996                                struct gl_framebuffer *fb,
 997                                struct st_framebuffer_iface *stfbi)
 998 {
 999    struct st_framebuffer *cur = NULL, *stfb = NULL;
1000
1001    if (!stfbi)
1002       return NULL;
1003
1004    /* Check if there is already a framebuffer object for the specified
1005     * framebuffer interface in this context. If there is one, use it.
1006     */
1007    LIST_FOR_EACH_ENTRY(cur, &st->winsys_buffers, head) {
1008       if (cur->iface_ID == stfbi->ID) {
1009          st_framebuffer_reference(&stfb, cur);
1010          break;
1011       }
1012    }
1013
1014    /* If there is not already a framebuffer object, create one */
1015    if (stfb == NULL) {
1016       cur = st_framebuffer_create(st, stfbi);
1017
1018       if (cur) {
1019          /* add the referenced framebuffer interface object to
1020           * the framebuffer interface object hash table.
1021           */
1022          if (!st_framebuffer_iface_insert(stfbi->state_manager, stfbi)) {
1023             st_framebuffer_reference(&cur, NULL);
1024             return NULL;
1025          }
1026
1027          /* add to the context's winsys buffers list */
1028          LIST_ADD(&cur->head, &st->winsys_buffers);
1029
1030          st_framebuffer_reference(&stfb, cur);
1031       }
1032    }
1033
1034    return stfb;
1035 }
1036
1037
1038 static boolean
1039 st_api_make_current(struct st_api *stapi, struct st_context_iface *stctxi,
1040                     struct st_framebuffer_iface *stdrawi,
1041                     struct st_framebuffer_iface *streadi)
1042 {
1043    struct st_context *st = (struct st_context *) stctxi;
1044    struct st_framebuffer *stdraw, *stread;
1045    boolean ret;
1046
1047    if (st) {
1048       /* reuse or create the draw fb */
1049       stdraw = st_framebuffer_reuse_or_create(st,
1050             st->ctx->WinSysDrawBuffer, stdrawi);
1051       if (streadi != stdrawi) {
1052          /* do the same for the read fb */
1053          stread = st_framebuffer_reuse_or_create(st,
1054                st->ctx->WinSysReadBuffer, streadi);
1055       }
1056       else {
1057          stread = NULL;
1058          /* reuse the draw fb for the read fb */
1059          if (stdraw)
1060             st_framebuffer_reference(&stread, stdraw);
1061       }
1062
1063       if (stdraw && stread) {
1064          st_framebuffer_validate(stdraw, st);
1065          if (stread != stdraw)
1066             st_framebuffer_validate(stread, st);
1067
1068          ret = _mesa_make_current(st->ctx, &stdraw->Base, &stread->Base);
1069
1070          st->draw_stamp = stdraw->stamp - 1;
1071          st->read_stamp = stread->stamp - 1;
1072          st_context_validate(st, stdraw, stread);
1073       }
1074       else {
1075          struct gl_framebuffer *incomplete = _mesa_get_incomplete_framebuffer();
1076          ret = _mesa_make_current(st->ctx, incomplete, incomplete);
1077       }
1078
1079       st_framebuffer_reference(&stdraw, NULL);
1080       st_framebuffer_reference(&stread, NULL);
1081
1082       /* Purge the context's winsys_buffers list in case any
1083        * of the referenced drawables no longer exist.
1084        */
1085       st_framebuffers_purge(st);
1086    }
1087    else {
1088       ret = _mesa_make_current(NULL, NULL, NULL);
1089    }
1090
1091    return ret;
1092 }
1093
1094
1095 static void
1096 st_api_destroy(struct st_api *stapi)
1097 {
1098 }
1099
1100
1101 /**
1102  * Flush the front buffer if the current context renders to the front buffer.
1103  */
1104 void
1105 st_manager_flush_frontbuffer(struct st_context *st)
1106 {
1107    struct st_framebuffer *stfb = st_ws_framebuffer(st->ctx->DrawBuffer);
1108    struct st_renderbuffer *strb = NULL;
1109
1110    if (stfb)
1111       strb = st_renderbuffer(stfb->Base.Attachment[BUFFER_FRONT_LEFT].
1112                              Renderbuffer);
1113
1114    /* Do we have a front color buffer and has it been drawn to since last
1115     * frontbuffer flush?
1116     */
1117    if (strb && strb->defined) {
1118       stfb->iface->flush_front(&st->iface, stfb->iface,
1119                                ST_ATTACHMENT_FRONT_LEFT);
1120       strb->defined = GL_FALSE;
1121
1122       /* Trigger an update of strb->defined on next draw */
1123       st->dirty |= ST_NEW_FB_STATE;
1124    }
1125 }
1126
1127
1128 /**
1129  * Re-validate the framebuffers.
1130  */
1131 void
1132 st_manager_validate_framebuffers(struct st_context *st)
1133 {
1134    struct st_framebuffer *stdraw = st_ws_framebuffer(st->ctx->DrawBuffer);
1135    struct st_framebuffer *stread = st_ws_framebuffer(st->ctx->ReadBuffer);
1136
1137    if (stdraw)
1138       st_framebuffer_validate(stdraw, st);
1139    if (stread && stread != stdraw)
1140       st_framebuffer_validate(stread, st);
1141
1142    st_context_validate(st, stdraw, stread);
1143 }
1144
1145
1146 /**
1147  * Flush any outstanding swapbuffers on the current draw framebuffer.
1148  */
1149 void
1150 st_manager_flush_swapbuffers(void)
1151 {
1152    GET_CURRENT_CONTEXT(ctx);
1153    struct st_context *st = (ctx) ? ctx->st : NULL;
1154    struct st_framebuffer *stfb;
1155
1156    if (!st)
1157       return;
1158
1159    stfb = st_ws_framebuffer(ctx->DrawBuffer);
1160    if (!stfb || !stfb->iface->flush_swapbuffers)
1161       return;
1162
1163    stfb->iface->flush_swapbuffers(&st->iface, stfb->iface);
1164 }
1165
1166
1167 /**
1168  * Add a color renderbuffer on demand.  The FBO must correspond to a window,
1169  * not a user-created FBO.
1170  */
1171 boolean
1172 st_manager_add_color_renderbuffer(struct st_context *st,
1173                                   struct gl_framebuffer *fb,
1174                                   gl_buffer_index idx)
1175 {
1176    struct st_framebuffer *stfb = st_ws_framebuffer(fb);
1177
1178    /* FBO */
1179    if (!stfb)
1180       return FALSE;
1181
1182    assert(_mesa_is_winsys_fbo(fb));
1183
1184    if (stfb->Base.Attachment[idx].Renderbuffer)
1185       return TRUE;
1186
1187    switch (idx) {
1188    case BUFFER_FRONT_LEFT:
1189    case BUFFER_BACK_LEFT:
1190    case BUFFER_FRONT_RIGHT:
1191    case BUFFER_BACK_RIGHT:
1192       break;
1193    default:
1194       return FALSE;
1195    }
1196
1197    if (!st_framebuffer_add_renderbuffer(stfb, idx))
1198       return FALSE;
1199
1200    st_framebuffer_update_attachments(stfb);
1201
1202    /*
1203     * Force a call to the state tracker manager to validate the
1204     * new renderbuffer. It might be that there is a window system
1205     * renderbuffer available.
1206     */
1207    if (stfb->iface)
1208       stfb->iface_stamp = p_atomic_read(&stfb->iface->stamp) - 1;
1209
1210    st_invalidate_buffers(st);
1211
1212    return TRUE;
1213 }
1214
1215
1216 static unsigned
1217 get_version(struct pipe_screen *screen,
1218             struct st_config_options *options, gl_api api)
1219 {
1220    struct gl_constants consts = {0};
1221    struct gl_extensions extensions = {0};
1222    GLuint version;
1223
1224    if (_mesa_override_gl_version_contextless(&consts, &api, &version)) {
1225       return version;
1226    }
1227
1228    _mesa_init_constants(&consts, api);
1229    _mesa_init_extensions(&extensions);
1230
1231    st_init_limits(screen, &consts, &extensions, api);
1232    st_init_extensions(screen, &consts, &extensions, options, api);
1233
1234    return _mesa_get_version(&extensions, &consts, api);
1235 }
1236
1237
1238 static void
1239 st_api_query_versions(struct st_api *stapi, struct st_manager *sm,
1240                       struct st_config_options *options,
1241                       int *gl_core_version,
1242                       int *gl_compat_version,
1243                       int *gl_es1_version,
1244                       int *gl_es2_version)
1245 {
1246    *gl_core_version = get_version(sm->screen, options, API_OPENGL_CORE);
1247    *gl_compat_version = get_version(sm->screen, options, API_OPENGL_COMPAT);
1248    *gl_es1_version = get_version(sm->screen, options, API_OPENGLES);
1249    *gl_es2_version = get_version(sm->screen, options, API_OPENGLES2);
1250 }
1251
1252
1253 static const struct st_api st_gl_api = {
1254    .name = "Mesa " PACKAGE_VERSION,
1255    .api = ST_API_OPENGL,
1256    .profile_mask = ST_PROFILE_DEFAULT_MASK |
1257                    ST_PROFILE_OPENGL_CORE_MASK |
1258                    ST_PROFILE_OPENGL_ES1_MASK |
1259                    ST_PROFILE_OPENGL_ES2_MASK |
1260                    0,
1261    .feature_mask = ST_API_FEATURE_MS_VISUALS_MASK,
1262    .destroy = st_api_destroy,
1263    .query_versions = st_api_query_versions,
1264    .create_context = st_api_create_context,
1265    .make_current = st_api_make_current,
1266    .get_current = st_api_get_current,
1267    .destroy_drawable = st_api_destroy_drawable,
1268 };
1269
1270
1271 struct st_api *
1272 st_gl_api_create(void)
1273 {
1274    return (struct st_api *) &st_gl_api;
1275 }