src/gallium/state_trackers/egl/common/egl_g3d_api.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.9
   4  *
   5  * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 #include "egldriver.h"
  27 #include "eglcurrent.h"
  28 #include "egllog.h"
  29
  30 #include "pipe/p_screen.h"
  31 #include "util/u_memory.h"
  32 #include "util/u_inlines.h"
  33 #include "util/u_box.h"
  34
  35 #include "egl_g3d.h"
  36 #include "egl_g3d_api.h"
  37 #include "egl_g3d_image.h"
  38 #include "egl_g3d_sync.h"
  39 #include "egl_g3d_st.h"
  40 #include "egl_g3d_loader.h"
  41 #include "native.h"
  42
  43 /**
  44  * Return the state tracker for the given context.
  45  */
  46 static struct st_api *
  47 egl_g3d_choose_st(_EGLDriver *drv, _EGLContext *ctx,
  48                   enum st_profile_type *profile)
  49 {
  50    struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
  51    struct st_api *stapi;
  52    EGLint api = -1;
  53
  54    *profile = ST_PROFILE_DEFAULT;
  55
  56    switch (ctx->ClientAPI) {
  57    case EGL_OPENGL_ES_API:
  58       switch (ctx->ClientVersion) {
  59       case 1:
  60          api = ST_API_OPENGL;
  61          *profile = ST_PROFILE_OPENGL_ES1;
  62          break;
  63       case 2:
  64          api = ST_API_OPENGL;
  65          *profile = ST_PROFILE_OPENGL_ES2;
  66          break;
  67       default:
  68          _eglLog(_EGL_WARNING, "unknown client version %d",
  69                ctx->ClientVersion);
  70          break;
  71       }
  72       break;
  73    case EGL_OPENVG_API:
  74       api = ST_API_OPENVG;
  75       break;
  76    case EGL_OPENGL_API:
  77       api = ST_API_OPENGL;
  78       break;
  79    default:
  80       _eglLog(_EGL_WARNING, "unknown client API 0x%04x", ctx->ClientAPI);
  81       break;
  82    }
  83
  84    switch (api) {
  85    case ST_API_OPENGL:
  86       stapi = gdrv->loader->guess_gl_api(*profile);
  87       break;
  88    case ST_API_OPENVG:
  89       stapi = gdrv->loader->get_st_api(api);
  90       break;
  91    default:
  92       stapi = NULL;
  93       break;
  94    }
  95    if (stapi && !(stapi->profile_mask & (1 << *profile)))
  96       stapi = NULL;
  97
  98    return stapi;
  99 }
 100
 101 static int
 102 egl_g3d_compare_config(const _EGLConfig *conf1, const _EGLConfig *conf2,
 103                        void *priv_data)
 104 {
 105    const _EGLConfig *criteria = (const _EGLConfig *) priv_data;
 106
 107    /* EGL_NATIVE_VISUAL_TYPE ignored? */
 108    return _eglCompareConfigs(conf1, conf2, criteria, EGL_TRUE);
 109 }
 110
 111 static EGLBoolean
 112 egl_g3d_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
 113 {
 114    if (!_eglMatchConfig(conf, criteria))
 115       return EGL_FALSE;
 116
 117    if (criteria->MatchNativePixmap != EGL_NONE &&
 118        criteria->MatchNativePixmap != EGL_DONT_CARE) {
 119       struct egl_g3d_display *gdpy = egl_g3d_display(conf->Display);
 120       struct egl_g3d_config *gconf = egl_g3d_config(conf);
 121       EGLNativePixmapType pix =
 122          (EGLNativePixmapType) criteria->MatchNativePixmap;
 123
 124       if (!gdpy->native->is_pixmap_supported(gdpy->native, pix, gconf->native))
 125          return EGL_FALSE;
 126    }
 127
 128    return EGL_TRUE;
 129 }
 130
 131 static EGLBoolean
 132 egl_g3d_choose_config(_EGLDriver *drv, _EGLDisplay *dpy, const EGLint *attribs,
 133                       EGLConfig *configs, EGLint size, EGLint *num_configs)
 134 {
 135    _EGLConfig **tmp_configs, criteria;
 136    EGLint tmp_size, i;
 137
 138    if (!num_configs)
 139       return _eglError(EGL_BAD_PARAMETER, "eglChooseConfigs");
 140
 141    if (!_eglParseConfigAttribList(&criteria, dpy, attribs))
 142       return _eglError(EGL_BAD_ATTRIBUTE, "eglChooseConfig");
 143
 144    /* get the number of matched configs */
 145    tmp_size = _eglFilterArray(dpy->Configs, NULL, 0,
 146          (_EGLArrayForEach) egl_g3d_match_config, (void *) &criteria);
 147    if (!tmp_size) {
 148       *num_configs = tmp_size;
 149       return EGL_TRUE;
 150    }
 151
 152    tmp_configs = MALLOC(sizeof(tmp_configs[0]) * tmp_size);
 153    if (!tmp_configs)
 154       return _eglError(EGL_BAD_ALLOC, "eglChooseConfig(out of memory)");
 155
 156    /* get the matched configs */
 157    _eglFilterArray(dpy->Configs, (void **) tmp_configs, tmp_size,
 158          (_EGLArrayForEach) egl_g3d_match_config, (void *) &criteria);
 159
 160    /* perform sorting of configs */
 161    if (tmp_configs && tmp_size) {
 162       _eglSortConfigs((const _EGLConfig **) tmp_configs, tmp_size,
 163             egl_g3d_compare_config, (void *) &criteria);
 164       size = MIN2(tmp_size, size);
 165       for (i = 0; i < size; i++)
 166          configs[i] = _eglGetConfigHandle(tmp_configs[i]);
 167    }
 168
 169    FREE(tmp_configs);
 170
 171    *num_configs = size;
 172
 173    return EGL_TRUE;
 174 }
 175
 176 static _EGLContext *
 177 egl_g3d_create_context(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
 178                        _EGLContext *share, const EGLint *attribs)
 179 {
 180    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 181    struct egl_g3d_context *gshare = egl_g3d_context(share);
 182    struct egl_g3d_config *gconf = egl_g3d_config(conf);
 183    struct egl_g3d_context *gctx;
 184    struct st_context_attribs stattribs;
 185
 186    gctx = CALLOC_STRUCT(egl_g3d_context);
 187    if (!gctx) {
 188       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
 189       return NULL;
 190    }
 191
 192    if (!_eglInitContext(&gctx->base, dpy, conf, attribs)) {
 193       FREE(gctx);
 194       return NULL;
 195    }
 196
 197    memset(&stattribs, 0, sizeof(stattribs));
 198    if (gconf)
 199       stattribs.visual = gconf->stvis;
 200
 201    gctx->stapi = egl_g3d_choose_st(drv, &gctx->base, &stattribs.profile);
 202    if (!gctx->stapi) {
 203       FREE(gctx);
 204       return NULL;
 205    }
 206
 207    gctx->stctxi = gctx->stapi->create_context(gctx->stapi, gdpy->smapi,
 208          &stattribs, (gshare) ? gshare->stctxi : NULL);
 209    if (!gctx->stctxi) {
 210       FREE(gctx);
 211       return NULL;
 212    }
 213
 214    gctx->stctxi->st_manager_private = (void *) &gctx->base;
 215
 216    return &gctx->base;
 217 }
 218
 219 /**
 220  * Destroy a context.
 221  */
 222 static void
 223 destroy_context(_EGLDisplay *dpy, _EGLContext *ctx)
 224 {
 225    struct egl_g3d_context *gctx = egl_g3d_context(ctx);
 226
 227    /* FIXME a context might live longer than its display */
 228    if (!dpy->Initialized)
 229       _eglLog(_EGL_FATAL, "destroy a context with an unitialized display");
 230
 231    gctx->stctxi->destroy(gctx->stctxi);
 232
 233    FREE(gctx);
 234 }
 235
 236 static EGLBoolean
 237 egl_g3d_destroy_context(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx)
 238 {
 239    if (_eglPutContext(ctx))
 240       destroy_context(dpy, ctx);
 241    return EGL_TRUE;
 242 }
 243
 244 struct egl_g3d_create_surface_arg {
 245    EGLint type;
 246    union {
 247       EGLNativeWindowType win;
 248       EGLNativePixmapType pix;
 249    } u;
 250 };
 251
 252 static _EGLSurface *
 253 egl_g3d_create_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
 254                        struct egl_g3d_create_surface_arg *arg,
 255                        const EGLint *attribs)
 256 {
 257    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 258    struct egl_g3d_config *gconf = egl_g3d_config(conf);
 259    struct egl_g3d_surface *gsurf;
 260    struct native_surface *nsurf;
 261    const char *err;
 262
 263    switch (arg->type) {
 264    case EGL_WINDOW_BIT:
 265       err = "eglCreateWindowSurface";
 266       break;
 267    case EGL_PIXMAP_BIT:
 268       err = "eglCreatePixmapSurface";
 269       break;
 270 #ifdef EGL_MESA_screen_surface
 271    case EGL_SCREEN_BIT_MESA:
 272       err = "eglCreateScreenSurface";
 273       break;
 274 #endif
 275    default:
 276       err = "eglCreateUnknownSurface";
 277       break;
 278    }
 279
 280    gsurf = CALLOC_STRUCT(egl_g3d_surface);
 281    if (!gsurf) {
 282       _eglError(EGL_BAD_ALLOC, err);
 283       return NULL;
 284    }
 285
 286    if (!_eglInitSurface(&gsurf->base, dpy, arg->type, conf, attribs)) {
 287       FREE(gsurf);
 288       return NULL;
 289    }
 290
 291    /* create the native surface */
 292    switch (arg->type) {
 293    case EGL_WINDOW_BIT:
 294       nsurf = gdpy->native->create_window_surface(gdpy->native,
 295             arg->u.win, gconf->native);
 296       break;
 297    case EGL_PIXMAP_BIT:
 298       nsurf = gdpy->native->create_pixmap_surface(gdpy->native,
 299             arg->u.pix, gconf->native);
 300       break;
 301 #ifdef EGL_MESA_screen_surface
 302    case EGL_SCREEN_BIT_MESA:
 303       /* prefer back buffer (move to _eglInitSurface?) */
 304       gsurf->base.RenderBuffer = EGL_BACK_BUFFER;
 305       nsurf = gdpy->native->modeset->create_scanout_surface(gdpy->native,
 306             gconf->native, gsurf->base.Width, gsurf->base.Height);
 307       break;
 308 #endif
 309    default:
 310       nsurf = NULL;
 311       break;
 312    }
 313
 314    if (!nsurf) {
 315       FREE(gsurf);
 316       return NULL;
 317    }
 318    /* initialize the geometry */
 319    if (!nsurf->validate(nsurf, 0x0, &gsurf->sequence_number, NULL,
 320             &gsurf->base.Width, &gsurf->base.Height)) {
 321       nsurf->destroy(nsurf);
 322       FREE(gsurf);
 323       return NULL;
 324    }
 325
 326    gsurf->stvis = gconf->stvis;
 327    if (gsurf->base.RenderBuffer == EGL_SINGLE_BUFFER &&
 328        gconf->stvis.buffer_mask & ST_ATTACHMENT_FRONT_LEFT_MASK)
 329       gsurf->stvis.render_buffer = ST_ATTACHMENT_FRONT_LEFT;
 330
 331    gsurf->stfbi = egl_g3d_create_st_framebuffer(&gsurf->base);
 332    if (!gsurf->stfbi) {
 333       nsurf->destroy(nsurf);
 334       FREE(gsurf);
 335       return NULL;
 336    }
 337
 338    nsurf->user_data = &gsurf->base;
 339    gsurf->native = nsurf;
 340
 341    return &gsurf->base;
 342 }
 343
 344 static _EGLSurface *
 345 egl_g3d_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 346                               _EGLConfig *conf, EGLNativeWindowType win,
 347                               const EGLint *attribs)
 348 {
 349    struct egl_g3d_create_surface_arg arg;
 350
 351    memset(&arg, 0, sizeof(arg));
 352    arg.type = EGL_WINDOW_BIT;
 353    arg.u.win = win;
 354
 355    return egl_g3d_create_surface(drv, dpy, conf, &arg, attribs);
 356 }
 357
 358 static _EGLSurface *
 359 egl_g3d_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 360                               _EGLConfig *conf, EGLNativePixmapType pix,
 361                               const EGLint *attribs)
 362 {
 363    struct egl_g3d_create_surface_arg arg;
 364
 365    memset(&arg, 0, sizeof(arg));
 366    arg.type = EGL_PIXMAP_BIT;
 367    arg.u.pix = pix;
 368
 369    return egl_g3d_create_surface(drv, dpy, conf, &arg, attribs);
 370 }
 371
 372 static struct egl_g3d_surface *
 373 create_pbuffer_surface(_EGLDisplay *dpy, _EGLConfig *conf,
 374                        const EGLint *attribs, const char *func)
 375 {
 376    struct egl_g3d_config *gconf = egl_g3d_config(conf);
 377    struct egl_g3d_surface *gsurf;
 378
 379    gsurf = CALLOC_STRUCT(egl_g3d_surface);
 380    if (!gsurf) {
 381       _eglError(EGL_BAD_ALLOC, func);
 382       return NULL;
 383    }
 384
 385    if (!_eglInitSurface(&gsurf->base, dpy, EGL_PBUFFER_BIT, conf, attribs)) {
 386       FREE(gsurf);
 387       return NULL;
 388    }
 389
 390    gsurf->stvis = gconf->stvis;
 391
 392    gsurf->stfbi = egl_g3d_create_st_framebuffer(&gsurf->base);
 393    if (!gsurf->stfbi) {
 394       FREE(gsurf);
 395       return NULL;
 396    }
 397
 398    return gsurf;
 399 }
 400
 401 static _EGLSurface *
 402 egl_g3d_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 403                                _EGLConfig *conf, const EGLint *attribs)
 404 {
 405    struct egl_g3d_surface *gsurf;
 406
 407    gsurf = create_pbuffer_surface(dpy, conf, attribs,
 408          "eglCreatePbufferSurface");
 409    if (!gsurf)
 410       return NULL;
 411
 412    gsurf->client_buffer_type = EGL_NONE;
 413
 414    return &gsurf->base;
 415 }
 416
 417 static _EGLSurface *
 418 egl_g3d_create_pbuffer_from_client_buffer(_EGLDriver *drv, _EGLDisplay *dpy,
 419                                           EGLenum buftype,
 420                                           EGLClientBuffer buffer,
 421                                           _EGLConfig *conf,
 422                                           const EGLint *attribs)
 423 {
 424    struct egl_g3d_surface *gsurf;
 425    struct pipe_resource *ptex = NULL;
 426    EGLint pbuffer_attribs[32];
 427    EGLint count, i;
 428
 429    switch (buftype) {
 430    case EGL_OPENVG_IMAGE:
 431       break;
 432    default:
 433       _eglError(EGL_BAD_PARAMETER, "eglCreatePbufferFromClientBuffer");
 434       return NULL;
 435       break;
 436    }
 437
 438    /* parse the attributes first */
 439    count = 0;
 440    for (i = 0; attribs && attribs[i] != EGL_NONE; i++) {
 441       EGLint attr = attribs[i++];
 442       EGLint val = attribs[i];
 443       EGLint err = EGL_SUCCESS;
 444
 445       switch (attr) {
 446       case EGL_TEXTURE_FORMAT:
 447       case EGL_TEXTURE_TARGET:
 448       case EGL_MIPMAP_TEXTURE:
 449          pbuffer_attribs[count++] = attr;
 450          pbuffer_attribs[count++] = val;
 451          break;
 452       default:
 453          err = EGL_BAD_ATTRIBUTE;
 454          break;
 455       }
 456       /* bail out */
 457       if (err != EGL_SUCCESS) {
 458          _eglError(err, "eglCreatePbufferFromClientBuffer");
 459          return NULL;
 460       }
 461    }
 462
 463    pbuffer_attribs[count++] = EGL_NONE;
 464
 465    gsurf = create_pbuffer_surface(dpy, conf, pbuffer_attribs,
 466          "eglCreatePbufferFromClientBuffer");
 467    if (!gsurf)
 468       return NULL;
 469
 470    gsurf->client_buffer_type = buftype;
 471    gsurf->client_buffer = buffer;
 472
 473    /* validate now so that it fails if the client buffer is invalid */
 474    if (!gsurf->stfbi->validate(gsurf->stfbi,
 475             &gsurf->stvis.render_buffer, 1, &ptex)) {
 476       egl_g3d_destroy_st_framebuffer(gsurf->stfbi);
 477       FREE(gsurf);
 478       return NULL;
 479    }
 480    pipe_resource_reference(&ptex, NULL);
 481
 482    return &gsurf->base;
 483 }
 484
 485 /**
 486  * Destroy a surface.
 487  */
 488 static void
 489 destroy_surface(_EGLDisplay *dpy, _EGLSurface *surf)
 490 {
 491    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 492
 493    /* FIXME a surface might live longer than its display */
 494    if (!dpy->Initialized)
 495       _eglLog(_EGL_FATAL, "destroy a surface with an unitialized display");
 496
 497    pipe_resource_reference(&gsurf->render_texture, NULL);
 498    egl_g3d_destroy_st_framebuffer(gsurf->stfbi);
 499    if (gsurf->native)
 500       gsurf->native->destroy(gsurf->native);
 501    FREE(gsurf);
 502 }
 503
 504 static EGLBoolean
 505 egl_g3d_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
 506 {
 507    if (_eglPutSurface(surf))
 508       destroy_surface(dpy, surf);
 509    return EGL_TRUE;
 510 }
 511
 512 static EGLBoolean
 513 egl_g3d_make_current(_EGLDriver *drv, _EGLDisplay *dpy,
 514                      _EGLSurface *draw, _EGLSurface *read, _EGLContext *ctx)
 515 {
 516    struct egl_g3d_context *gctx = egl_g3d_context(ctx);
 517    struct egl_g3d_surface *gdraw = egl_g3d_surface(draw);
 518    struct egl_g3d_surface *gread = egl_g3d_surface(read);
 519    struct egl_g3d_context *old_gctx;
 520    _EGLContext *old_ctx;
 521    _EGLSurface *old_draw, *old_read;
 522    EGLBoolean ok = EGL_TRUE;
 523
 524    /* make new bindings */
 525    if (!_eglBindContext(ctx, draw, read, &old_ctx, &old_draw, &old_read))
 526       return EGL_FALSE;
 527
 528    old_gctx = egl_g3d_context(old_ctx);
 529    if (old_gctx) {
 530       /* flush old context */
 531       old_gctx->stctxi->flush(old_gctx->stctxi,
 532             PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
 533    }
 534
 535    if (gctx) {
 536       ok = gctx->stapi->make_current(gctx->stapi, gctx->stctxi,
 537             (gdraw) ? gdraw->stfbi : NULL, (gread) ? gread->stfbi : NULL);
 538       if (ok) {
 539          if (gdraw) {
 540             gctx->stctxi->notify_invalid_framebuffer(gctx->stctxi,
 541                   gdraw->stfbi);
 542
 543             if (gdraw->base.Type == EGL_WINDOW_BIT) {
 544                gctx->base.WindowRenderBuffer =
 545                   (gdraw->stvis.render_buffer == ST_ATTACHMENT_FRONT_LEFT) ?
 546                   EGL_SINGLE_BUFFER : EGL_BACK_BUFFER;
 547             }
 548          }
 549          if (gread && gread != gdraw) {
 550             gctx->stctxi->notify_invalid_framebuffer(gctx->stctxi,
 551                   gread->stfbi);
 552          }
 553       }
 554    }
 555    else if (old_gctx) {
 556       ok = old_gctx->stapi->make_current(old_gctx->stapi, NULL, NULL, NULL);
 557       if (ok)
 558          old_gctx->base.WindowRenderBuffer = EGL_NONE;
 559    }
 560
 561    if (ok) {
 562       if (_eglPutContext(old_ctx))
 563          destroy_context(dpy, old_ctx);
 564       if (_eglPutSurface(old_draw))
 565          destroy_surface(dpy, old_draw);
 566       if (_eglPutSurface(old_read))
 567          destroy_surface(dpy, old_read);
 568    }
 569    else {
 570       /* undo the previous _eglBindContext */
 571       _eglBindContext(old_ctx, old_draw, old_read, &ctx, &draw, &read);
 572       assert(&gctx->base == ctx &&
 573              &gdraw->base == draw &&
 574              &gread->base == read);
 575
 576       _eglPutSurface(draw);
 577       _eglPutSurface(read);
 578       _eglPutContext(ctx);
 579
 580       _eglPutSurface(old_draw);
 581       _eglPutSurface(old_read);
 582       _eglPutContext(old_ctx);
 583    }
 584
 585    return ok;
 586 }
 587
 588 static EGLBoolean
 589 egl_g3d_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
 590 {
 591    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 592    _EGLContext *ctx = _eglGetCurrentContext();
 593    struct egl_g3d_context *gctx = NULL;
 594
 595    /* no-op for pixmap or pbuffer surface */
 596    if (gsurf->base.Type == EGL_PIXMAP_BIT ||
 597        gsurf->base.Type == EGL_PBUFFER_BIT)
 598       return EGL_TRUE;
 599
 600    /* or when the surface is single-buffered */
 601    if (gsurf->stvis.render_buffer == ST_ATTACHMENT_FRONT_LEFT)
 602       return EGL_TRUE;
 603
 604    if (ctx && ctx->DrawSurface == surf)
 605       gctx = egl_g3d_context(ctx);
 606
 607    /* flush if the surface is current */
 608    if (gctx) {
 609       gctx->stctxi->flush(gctx->stctxi,
 610             PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
 611    }
 612
 613    return gsurf->native->present(gsurf->native,
 614          NATIVE_ATTACHMENT_BACK_LEFT,
 615          gsurf->base.SwapBehavior == EGL_BUFFER_PRESERVED,
 616          gsurf->base.SwapInterval);
 617 }
 618
 619 /**
 620  * Get the pipe surface of the given attachment of the native surface.
 621  */
 622 static struct pipe_resource *
 623 get_pipe_resource(struct native_display *ndpy, struct native_surface *nsurf,
 624                   enum native_attachment natt)
 625 {
 626    struct pipe_resource *textures[NUM_NATIVE_ATTACHMENTS];
 627
 628    textures[natt] = NULL;
 629    nsurf->validate(nsurf, 1 << natt, NULL, textures, NULL, NULL);
 630
 631    return textures[natt];
 632 }
 633
 634 static EGLBoolean
 635 egl_g3d_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
 636                      EGLNativePixmapType target)
 637 {
 638    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 639    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 640    _EGLContext *ctx = _eglGetCurrentContext();
 641    struct native_surface *nsurf;
 642    struct pipe_resource *ptex;
 643
 644    if (!gsurf->render_texture)
 645       return EGL_TRUE;
 646
 647    nsurf = gdpy->native->create_pixmap_surface(gdpy->native, target, NULL);
 648    if (!nsurf)
 649       return _eglError(EGL_BAD_NATIVE_PIXMAP, "eglCopyBuffers");
 650
 651    /* flush if the surface is current */
 652    if (ctx && ctx->DrawSurface == &gsurf->base) {
 653       struct egl_g3d_context *gctx = egl_g3d_context(ctx);
 654       gctx->stctxi->flush(gctx->stctxi,
 655             PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
 656    }
 657
 658    /* create a pipe context to copy surfaces */
 659    if (!gdpy->pipe) {
 660       gdpy->pipe =
 661          gdpy->native->screen->context_create(gdpy->native->screen, NULL);
 662       if (!gdpy->pipe)
 663          return EGL_FALSE;
 664    }
 665
 666    ptex = get_pipe_resource(gdpy->native, nsurf, NATIVE_ATTACHMENT_FRONT_LEFT);
 667    if (ptex) {
 668       struct pipe_box src_box;
 669
 670       u_box_origin_2d(ptex->width0, ptex->height0, &src_box);
 671       gdpy->pipe->resource_copy_region(gdpy->pipe, ptex, 0, 0, 0, 0,
 672             gsurf->render_texture, 0, &src_box);
 673       gdpy->pipe->flush(gdpy->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 674       nsurf->present(nsurf, NATIVE_ATTACHMENT_FRONT_LEFT, FALSE, 0);
 675
 676       pipe_resource_reference(&ptex, NULL);
 677    }
 678
 679    nsurf->destroy(nsurf);
 680
 681    return EGL_TRUE;
 682 }
 683
 684 static EGLBoolean
 685 egl_g3d_wait_client(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx)
 686 {
 687    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 688    struct egl_g3d_context *gctx = egl_g3d_context(ctx);
 689    struct pipe_screen *screen = gdpy->native->screen;
 690    struct pipe_fence_handle *fence = NULL;
 691
 692    gctx->stctxi->flush(gctx->stctxi,
 693          PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, &fence);
 694    if (fence) {
 695       screen->fence_finish(screen, fence, 0);
 696       screen->fence_reference(screen, &fence, NULL);
 697    }
 698
 699    return EGL_TRUE;
 700 }
 701
 702 static EGLBoolean
 703 egl_g3d_wait_native(_EGLDriver *drv, _EGLDisplay *dpy, EGLint engine)
 704 {
 705    _EGLContext *ctx = _eglGetCurrentContext();
 706
 707    if (engine != EGL_CORE_NATIVE_ENGINE)
 708       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
 709
 710    if (ctx && ctx->DrawSurface) {
 711       struct egl_g3d_surface *gsurf = egl_g3d_surface(ctx->DrawSurface);
 712
 713       if (gsurf->native)
 714          gsurf->native->wait(gsurf->native);
 715    }
 716
 717    return EGL_TRUE;
 718 }
 719
 720 static EGLBoolean
 721 egl_g3d_bind_tex_image(_EGLDriver *drv, _EGLDisplay *dpy,
 722                        _EGLSurface *surf, EGLint buffer)
 723 {
 724    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 725    _EGLContext *es1 = _eglGetAPIContext(EGL_OPENGL_ES_API);
 726    struct egl_g3d_context *gctx;
 727    enum pipe_format internal_format;
 728    enum st_texture_type target;
 729
 730    if (!gsurf || gsurf->base.Type != EGL_PBUFFER_BIT)
 731       return _eglError(EGL_BAD_SURFACE, "eglBindTexImage");
 732    if (buffer != EGL_BACK_BUFFER)
 733       return _eglError(EGL_BAD_PARAMETER, "eglBindTexImage");
 734    if (gsurf->base.BoundToTexture)
 735       return _eglError(EGL_BAD_ACCESS, "eglBindTexImage");
 736
 737    switch (gsurf->base.TextureFormat) {
 738    case EGL_TEXTURE_RGB:
 739       internal_format = PIPE_FORMAT_R8G8B8_UNORM;
 740       break;
 741    case EGL_TEXTURE_RGBA:
 742       internal_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 743       break;
 744    default:
 745       return _eglError(EGL_BAD_MATCH, "eglBindTexImage");
 746    }
 747
 748    switch (gsurf->base.TextureTarget) {
 749    case EGL_TEXTURE_2D:
 750       target = ST_TEXTURE_2D;
 751       break;
 752    default:
 753       return _eglError(EGL_BAD_MATCH, "eglBindTexImage");
 754    }
 755
 756    if (!es1)
 757       return EGL_TRUE;
 758    if (!gsurf->render_texture)
 759       return EGL_FALSE;
 760
 761    /* flush properly if the surface is bound */
 762    if (gsurf->base.CurrentContext) {
 763       gctx = egl_g3d_context(gsurf->base.CurrentContext);
 764       gctx->stctxi->flush(gctx->stctxi,
 765             PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
 766    }
 767
 768    gctx = egl_g3d_context(es1);
 769    if (gctx->stctxi->teximage) {
 770       if (!gctx->stctxi->teximage(gctx->stctxi, target,
 771                gsurf->base.MipmapLevel, internal_format,
 772                gsurf->render_texture, gsurf->base.MipmapTexture))
 773          return EGL_FALSE;
 774       gsurf->base.BoundToTexture = EGL_TRUE;
 775    }
 776
 777    return EGL_TRUE;
 778 }
 779
 780 static EGLBoolean
 781 egl_g3d_release_tex_image(_EGLDriver *drv, _EGLDisplay *dpy,
 782                           _EGLSurface *surf, EGLint buffer)
 783 {
 784    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 785
 786    if (!gsurf || gsurf->base.Type != EGL_PBUFFER_BIT ||
 787        !gsurf->base.BoundToTexture)
 788       return _eglError(EGL_BAD_SURFACE, "eglReleaseTexImage");
 789    if (buffer != EGL_BACK_BUFFER)
 790       return _eglError(EGL_BAD_PARAMETER, "eglReleaseTexImage");
 791
 792    if (gsurf->render_texture) {
 793       _EGLContext *ctx = _eglGetAPIContext(EGL_OPENGL_ES_API);
 794       struct egl_g3d_context *gctx = egl_g3d_context(ctx);
 795
 796       /* what if the context the surface binds to is no longer current? */
 797       if (gctx) {
 798          gctx->stctxi->teximage(gctx->stctxi, ST_TEXTURE_2D,
 799                gsurf->base.MipmapLevel, PIPE_FORMAT_NONE, NULL, FALSE);
 800       }
 801    }
 802
 803    gsurf->base.BoundToTexture = EGL_FALSE;
 804
 805    return EGL_TRUE;
 806 }
 807
 808 #ifdef EGL_MESA_screen_surface
 809
 810 static _EGLSurface *
 811 egl_g3d_create_screen_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 812                               _EGLConfig *conf, const EGLint *attribs)
 813 {
 814    struct egl_g3d_create_surface_arg arg;
 815
 816    memset(&arg, 0, sizeof(arg));
 817    arg.type = EGL_SCREEN_BIT_MESA;
 818
 819    return egl_g3d_create_surface(drv, dpy, conf, &arg, attribs);
 820 }
 821
 822 static EGLBoolean
 823 egl_g3d_show_screen_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 824                             _EGLScreen *scr, _EGLSurface *surf,
 825                             _EGLMode *mode)
 826 {
 827    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 828    struct egl_g3d_screen *gscr = egl_g3d_screen(scr);
 829    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 830    struct native_surface *nsurf;
 831    const struct native_mode *nmode;
 832    EGLBoolean changed;
 833
 834    if (gsurf) {
 835       EGLint idx;
 836
 837       if (!mode)
 838          return _eglError(EGL_BAD_MATCH, "eglShowSurfaceMESA");
 839       if (gsurf->base.Type != EGL_SCREEN_BIT_MESA)
 840          return _eglError(EGL_BAD_SURFACE, "eglShowScreenSurfaceMESA");
 841       if (gsurf->base.Width < mode->Width || gsurf->base.Height < mode->Height)
 842          return _eglError(EGL_BAD_MATCH,
 843                "eglShowSurfaceMESA(surface smaller than mode size)");
 844
 845       /* find the index of the mode */
 846       for (idx = 0; idx < gscr->base.NumModes; idx++)
 847          if (mode == &gscr->base.Modes[idx])
 848             break;
 849       if (idx >= gscr->base.NumModes) {
 850          return _eglError(EGL_BAD_MODE_MESA,
 851                "eglShowSurfaceMESA(unknown mode)");
 852       }
 853
 854       nsurf = gsurf->native;
 855       nmode = gscr->native_modes[idx];
 856    }
 857    else {
 858       if (mode)
 859          return _eglError(EGL_BAD_MATCH, "eglShowSurfaceMESA");
 860
 861       /* disable the screen */
 862       nsurf = NULL;
 863       nmode = NULL;
 864    }
 865
 866    /* TODO surface panning by CRTC choosing */
 867    changed = gdpy->native->modeset->program(gdpy->native, 0, nsurf,
 868          gscr->base.OriginX, gscr->base.OriginY, &gscr->native, 1, nmode);
 869    if (changed) {
 870       gscr->base.CurrentSurface = &gsurf->base;
 871       gscr->base.CurrentMode = mode;
 872    }
 873
 874    return changed;
 875 }
 876
 877 #endif /* EGL_MESA_screen_surface */
 878
 879 void
 880 egl_g3d_init_driver_api(_EGLDriver *drv)
 881 {
 882    _eglInitDriverFallbacks(drv);
 883
 884    drv->API.ChooseConfig = egl_g3d_choose_config;
 885
 886    drv->API.CreateContext = egl_g3d_create_context;
 887    drv->API.DestroyContext = egl_g3d_destroy_context;
 888    drv->API.CreateWindowSurface = egl_g3d_create_window_surface;
 889    drv->API.CreatePixmapSurface = egl_g3d_create_pixmap_surface;
 890    drv->API.CreatePbufferSurface = egl_g3d_create_pbuffer_surface;
 891    drv->API.CreatePbufferFromClientBuffer = egl_g3d_create_pbuffer_from_client_buffer;
 892    drv->API.DestroySurface = egl_g3d_destroy_surface;
 893    drv->API.MakeCurrent = egl_g3d_make_current;
 894    drv->API.SwapBuffers = egl_g3d_swap_buffers;
 895    drv->API.CopyBuffers = egl_g3d_copy_buffers;
 896    drv->API.WaitClient = egl_g3d_wait_client;
 897    drv->API.WaitNative = egl_g3d_wait_native;
 898
 899    drv->API.BindTexImage = egl_g3d_bind_tex_image;
 900    drv->API.ReleaseTexImage = egl_g3d_release_tex_image;
 901
 902    drv->API.CreateImageKHR = egl_g3d_create_image;
 903    drv->API.DestroyImageKHR = egl_g3d_destroy_image;
 904 #ifdef EGL_MESA_drm_image
 905    drv->API.CreateDRMImageMESA = egl_g3d_create_drm_image;
 906    drv->API.ExportDRMImageMESA = egl_g3d_export_drm_image;
 907 #endif
 908
 909 #ifdef EGL_KHR_reusable_sync
 910    drv->API.CreateSyncKHR = egl_g3d_create_sync;
 911    drv->API.DestroySyncKHR = egl_g3d_destroy_sync;
 912    drv->API.ClientWaitSyncKHR = egl_g3d_client_wait_sync;
 913    drv->API.SignalSyncKHR = egl_g3d_signal_sync;
 914 #endif
 915
 916 #ifdef EGL_MESA_screen_surface
 917    drv->API.CreateScreenSurfaceMESA = egl_g3d_create_screen_surface;
 918    drv->API.ShowScreenSurfaceMESA = egl_g3d_show_screen_surface;
 919 #endif
 920 }