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

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
   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
  25 #include "egldriver.h"
  26 #include "eglcurrent.h"
  27 #include "egllog.h"
  28
  29 #include "pipe/p_screen.h"
  30 #include "util/u_memory.h"
  31 #include "util/u_inlines.h"
  32 #include "util/u_box.h"
  33
  34 #include "egl_g3d.h"
  35 #include "egl_g3d_api.h"
  36 #include "egl_g3d_image.h"
  37 #include "egl_g3d_sync.h"
  38 #include "egl_g3d_st.h"
  39 #include "native.h"
  40
  41 /**
  42  * Return the state tracker for the given context.
  43  */
  44 static struct st_api *
  45 egl_g3d_choose_st(_EGLDriver *drv, _EGLContext *ctx,
  46                   enum st_profile_type *profile)
  47 {
  48    struct st_api *stapi;
  49    EGLint api = -1;
  50
  51    *profile = ST_PROFILE_DEFAULT;
  52
  53    switch (ctx->ClientAPI) {
  54    case EGL_OPENGL_ES_API:
  55       switch (ctx->ClientMajorVersion) {
  56       case 1:
  57          api = ST_API_OPENGL;
  58          *profile = ST_PROFILE_OPENGL_ES1;
  59          break;
  60       case 2:
  61          api = ST_API_OPENGL;
  62          *profile = ST_PROFILE_OPENGL_ES2;
  63          break;
  64       default:
  65          _eglLog(_EGL_WARNING, "unknown client major version %d",
  66                ctx->ClientMajorVersion);
  67          break;
  68       }
  69       break;
  70    case EGL_OPENVG_API:
  71       api = ST_API_OPENVG;
  72       break;
  73    case EGL_OPENGL_API:
  74       api = ST_API_OPENGL;
  75       break;
  76    default:
  77       _eglLog(_EGL_WARNING, "unknown client API 0x%04x", ctx->ClientAPI);
  78       break;
  79    }
  80
  81    stapi = egl_g3d_get_st_api(drv, api);
  82    if (stapi && !(stapi->profile_mask & (1 << *profile)))
  83       stapi = NULL;
  84
  85    return stapi;
  86 }
  87
  88 struct egl_g3d_choose_config_data {
  89    _EGLConfig criteria;
  90    enum pipe_format format;
  91 };
  92
  93 static int
  94 egl_g3d_compare_config(const _EGLConfig *conf1, const _EGLConfig *conf2,
  95                        void *priv_data)
  96 {
  97    struct egl_g3d_choose_config_data *data =
  98       (struct egl_g3d_choose_config_data *) priv_data;
  99    const _EGLConfig *criteria = &data->criteria;;
 100
 101    /* EGL_NATIVE_VISUAL_TYPE ignored? */
 102    return _eglCompareConfigs(conf1, conf2, criteria, EGL_TRUE);
 103 }
 104
 105 static EGLBoolean
 106 egl_g3d_match_config(const _EGLConfig *conf, void *priv_data)
 107 {
 108    struct egl_g3d_choose_config_data *data =
 109       (struct egl_g3d_choose_config_data *) priv_data;
 110    struct egl_g3d_config *gconf = egl_g3d_config(conf);
 111
 112    if (data->format != PIPE_FORMAT_NONE &&
 113        data->format != gconf->native->color_format)
 114       return EGL_FALSE;
 115
 116    return _eglMatchConfig(conf, &data->criteria);
 117 }
 118
 119 static EGLBoolean
 120 egl_g3d_choose_config(_EGLDriver *drv, _EGLDisplay *dpy, const EGLint *attribs,
 121                       EGLConfig *configs, EGLint size, EGLint *num_configs)
 122 {
 123    struct egl_g3d_choose_config_data data;
 124
 125    if (!_eglParseConfigAttribList(&data.criteria, dpy, attribs))
 126       return _eglError(EGL_BAD_ATTRIBUTE, "eglChooseConfig");
 127
 128    data.format = PIPE_FORMAT_NONE;
 129    if (data.criteria.MatchNativePixmap != EGL_NONE &&
 130        data.criteria.MatchNativePixmap != EGL_DONT_CARE) {
 131       struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 132
 133       if (!gdpy->native->get_pixmap_format(gdpy->native,
 134                (EGLNativePixmapType) data.criteria.MatchNativePixmap,
 135                &data.format))
 136          return _eglError(EGL_BAD_NATIVE_PIXMAP, "eglChooseConfig");
 137    }
 138
 139    return _eglFilterConfigArray(dpy->Configs, configs, size, num_configs,
 140          egl_g3d_match_config, egl_g3d_compare_config, &data);
 141 }
 142
 143 static _EGLContext *
 144 egl_g3d_create_context(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
 145                        _EGLContext *share, const EGLint *attribs)
 146 {
 147    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 148    struct egl_g3d_context *gshare = egl_g3d_context(share);
 149    struct egl_g3d_config *gconf = egl_g3d_config(conf);
 150    struct egl_g3d_context *gctx;
 151    struct st_context_attribs stattribs;
 152    enum st_context_error ctx_err = 0;
 153
 154    gctx = CALLOC_STRUCT(egl_g3d_context);
 155    if (!gctx) {
 156       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
 157       return NULL;
 158    }
 159
 160    if (!_eglInitContext(&gctx->base, dpy, conf, attribs)) {
 161       FREE(gctx);
 162       return NULL;
 163    }
 164
 165    memset(&stattribs, 0, sizeof(stattribs));
 166    if (gconf)
 167       stattribs.visual = gconf->stvis;
 168
 169    gctx->stapi = egl_g3d_choose_st(drv, &gctx->base, &stattribs.profile);
 170    if (!gctx->stapi) {
 171       FREE(gctx);
 172       return NULL;
 173    }
 174
 175    gctx->stctxi = gctx->stapi->create_context(gctx->stapi, gdpy->smapi,
 176          &stattribs, &ctx_err, (gshare) ? gshare->stctxi : NULL);
 177    if (!gctx->stctxi) {
 178       FREE(gctx);
 179       return NULL;
 180    }
 181
 182    gctx->stctxi->st_manager_private = (void *) &gctx->base;
 183
 184    return &gctx->base;
 185 }
 186
 187 /**
 188  * Destroy a context.
 189  */
 190 static void
 191 destroy_context(_EGLDisplay *dpy, _EGLContext *ctx)
 192 {
 193    struct egl_g3d_context *gctx = egl_g3d_context(ctx);
 194
 195    /* FIXME a context might live longer than its display */
 196    if (!dpy->Initialized)
 197       _eglLog(_EGL_FATAL, "destroy a context with an unitialized display");
 198
 199    gctx->stctxi->destroy(gctx->stctxi);
 200
 201    FREE(gctx);
 202 }
 203
 204 static EGLBoolean
 205 egl_g3d_destroy_context(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx)
 206 {
 207    if (_eglPutContext(ctx))
 208       destroy_context(dpy, ctx);
 209    return EGL_TRUE;
 210 }
 211
 212 struct egl_g3d_create_surface_arg {
 213    EGLint type;
 214    union {
 215       EGLNativeWindowType win;
 216       EGLNativePixmapType pix;
 217    } u;
 218 };
 219
 220 static _EGLSurface *
 221 egl_g3d_create_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
 222                        struct egl_g3d_create_surface_arg *arg,
 223                        const EGLint *attribs)
 224 {
 225    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 226    struct egl_g3d_config *gconf = egl_g3d_config(conf);
 227    struct egl_g3d_surface *gsurf;
 228    struct native_surface *nsurf;
 229    const char *err;
 230
 231    switch (arg->type) {
 232    case EGL_WINDOW_BIT:
 233       err = "eglCreateWindowSurface";
 234       break;
 235    case EGL_PIXMAP_BIT:
 236       err = "eglCreatePixmapSurface";
 237       break;
 238 #ifdef EGL_MESA_screen_surface
 239    case EGL_SCREEN_BIT_MESA:
 240       err = "eglCreateScreenSurface";
 241       break;
 242 #endif
 243    default:
 244       err = "eglCreateUnknownSurface";
 245       break;
 246    }
 247
 248    gsurf = CALLOC_STRUCT(egl_g3d_surface);
 249    if (!gsurf) {
 250       _eglError(EGL_BAD_ALLOC, err);
 251       return NULL;
 252    }
 253
 254    if (!_eglInitSurface(&gsurf->base, dpy, arg->type, conf, attribs)) {
 255       FREE(gsurf);
 256       return NULL;
 257    }
 258
 259    /* create the native surface */
 260    switch (arg->type) {
 261    case EGL_WINDOW_BIT:
 262       nsurf = gdpy->native->create_window_surface(gdpy->native,
 263             arg->u.win, gconf->native);
 264       break;
 265    case EGL_PIXMAP_BIT:
 266       nsurf = gdpy->native->create_pixmap_surface(gdpy->native,
 267             arg->u.pix, gconf->native);
 268       break;
 269 #ifdef EGL_MESA_screen_surface
 270    case EGL_SCREEN_BIT_MESA:
 271       /* prefer back buffer (move to _eglInitSurface?) */
 272       gsurf->base.RenderBuffer = EGL_BACK_BUFFER;
 273       nsurf = gdpy->native->modeset->create_scanout_surface(gdpy->native,
 274             gconf->native, gsurf->base.Width, gsurf->base.Height);
 275       break;
 276 #endif
 277    default:
 278       nsurf = NULL;
 279       break;
 280    }
 281
 282    if (!nsurf) {
 283       FREE(gsurf);
 284       return NULL;
 285    }
 286    /* initialize the geometry */
 287    if (!nsurf->validate(nsurf, 0x0, &gsurf->sequence_number, NULL,
 288             &gsurf->base.Width, &gsurf->base.Height)) {
 289       nsurf->destroy(nsurf);
 290       FREE(gsurf);
 291       return NULL;
 292    }
 293
 294    gsurf->stvis = gconf->stvis;
 295    if (gsurf->base.RenderBuffer == EGL_SINGLE_BUFFER &&
 296        gconf->stvis.buffer_mask & ST_ATTACHMENT_FRONT_LEFT_MASK)
 297       gsurf->stvis.render_buffer = ST_ATTACHMENT_FRONT_LEFT;
 298
 299    /* surfaces can always be posted when the display supports it */
 300    if (dpy->Extensions.NV_post_sub_buffer)
 301       gsurf->base.PostSubBufferSupportedNV = EGL_TRUE;
 302
 303    gsurf->stfbi = egl_g3d_create_st_framebuffer(&gsurf->base);
 304    if (!gsurf->stfbi) {
 305       nsurf->destroy(nsurf);
 306       FREE(gsurf);
 307       return NULL;
 308    }
 309
 310    nsurf->user_data = &gsurf->base;
 311    gsurf->native = nsurf;
 312
 313    return &gsurf->base;
 314 }
 315
 316 static _EGLSurface *
 317 egl_g3d_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 318                               _EGLConfig *conf, EGLNativeWindowType win,
 319                               const EGLint *attribs)
 320 {
 321    struct egl_g3d_create_surface_arg arg;
 322
 323    memset(&arg, 0, sizeof(arg));
 324    arg.type = EGL_WINDOW_BIT;
 325    arg.u.win = win;
 326
 327    return egl_g3d_create_surface(drv, dpy, conf, &arg, attribs);
 328 }
 329
 330 static _EGLSurface *
 331 egl_g3d_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 332                               _EGLConfig *conf, EGLNativePixmapType pix,
 333                               const EGLint *attribs)
 334 {
 335    struct egl_g3d_create_surface_arg arg;
 336
 337    memset(&arg, 0, sizeof(arg));
 338    arg.type = EGL_PIXMAP_BIT;
 339    arg.u.pix = pix;
 340
 341    return egl_g3d_create_surface(drv, dpy, conf, &arg, attribs);
 342 }
 343
 344 static struct egl_g3d_surface *
 345 create_pbuffer_surface(_EGLDisplay *dpy, _EGLConfig *conf,
 346                        const EGLint *attribs, const char *func)
 347 {
 348    struct egl_g3d_config *gconf = egl_g3d_config(conf);
 349    struct egl_g3d_surface *gsurf;
 350
 351    gsurf = CALLOC_STRUCT(egl_g3d_surface);
 352    if (!gsurf) {
 353       _eglError(EGL_BAD_ALLOC, func);
 354       return NULL;
 355    }
 356
 357    if (!_eglInitSurface(&gsurf->base, dpy, EGL_PBUFFER_BIT, conf, attribs)) {
 358       FREE(gsurf);
 359       return NULL;
 360    }
 361
 362    gsurf->stvis = gconf->stvis;
 363
 364    gsurf->stfbi = egl_g3d_create_st_framebuffer(&gsurf->base);
 365    if (!gsurf->stfbi) {
 366       FREE(gsurf);
 367       return NULL;
 368    }
 369
 370    return gsurf;
 371 }
 372
 373 static _EGLSurface *
 374 egl_g3d_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 375                                _EGLConfig *conf, const EGLint *attribs)
 376 {
 377    struct egl_g3d_surface *gsurf;
 378
 379    gsurf = create_pbuffer_surface(dpy, conf, attribs,
 380          "eglCreatePbufferSurface");
 381    if (!gsurf)
 382       return NULL;
 383
 384    gsurf->client_buffer_type = EGL_NONE;
 385
 386    return &gsurf->base;
 387 }
 388
 389 static _EGLSurface *
 390 egl_g3d_create_pbuffer_from_client_buffer(_EGLDriver *drv, _EGLDisplay *dpy,
 391                                           EGLenum buftype,
 392                                           EGLClientBuffer buffer,
 393                                           _EGLConfig *conf,
 394                                           const EGLint *attribs)
 395 {
 396    struct egl_g3d_surface *gsurf;
 397    struct pipe_resource *ptex = NULL;
 398    EGLint pbuffer_attribs[32];
 399    EGLint count, i;
 400
 401    switch (buftype) {
 402    case EGL_OPENVG_IMAGE:
 403       break;
 404    default:
 405       _eglError(EGL_BAD_PARAMETER, "eglCreatePbufferFromClientBuffer");
 406       return NULL;
 407       break;
 408    }
 409
 410    /* parse the attributes first */
 411    count = 0;
 412    for (i = 0; attribs && attribs[i] != EGL_NONE; i++) {
 413       EGLint attr = attribs[i++];
 414       EGLint val = attribs[i];
 415       EGLint err = EGL_SUCCESS;
 416
 417       switch (attr) {
 418       case EGL_TEXTURE_FORMAT:
 419       case EGL_TEXTURE_TARGET:
 420       case EGL_MIPMAP_TEXTURE:
 421          pbuffer_attribs[count++] = attr;
 422          pbuffer_attribs[count++] = val;
 423          break;
 424       default:
 425          err = EGL_BAD_ATTRIBUTE;
 426          break;
 427       }
 428       /* bail out */
 429       if (err != EGL_SUCCESS) {
 430          _eglError(err, "eglCreatePbufferFromClientBuffer");
 431          return NULL;
 432       }
 433    }
 434
 435    pbuffer_attribs[count++] = EGL_NONE;
 436
 437    gsurf = create_pbuffer_surface(dpy, conf, pbuffer_attribs,
 438          "eglCreatePbufferFromClientBuffer");
 439    if (!gsurf)
 440       return NULL;
 441
 442    gsurf->client_buffer_type = buftype;
 443    gsurf->client_buffer = buffer;
 444
 445    /* validate now so that it fails if the client buffer is invalid */
 446    if (!gsurf->stfbi->validate(NULL, gsurf->stfbi,
 447             &gsurf->stvis.render_buffer, 1, &ptex)) {
 448       egl_g3d_destroy_st_framebuffer(gsurf->stfbi);
 449       FREE(gsurf);
 450       return NULL;
 451    }
 452    pipe_resource_reference(&ptex, NULL);
 453
 454    return &gsurf->base;
 455 }
 456
 457 /**
 458  * Destroy a surface.
 459  */
 460 static void
 461 destroy_surface(_EGLDisplay *dpy, _EGLSurface *surf)
 462 {
 463    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 464
 465    /* FIXME a surface might live longer than its display */
 466    if (!dpy->Initialized)
 467       _eglLog(_EGL_FATAL, "destroy a surface with an unitialized display");
 468
 469    pipe_resource_reference(&gsurf->render_texture, NULL);
 470    egl_g3d_destroy_st_framebuffer(gsurf->stfbi);
 471    if (gsurf->native)
 472       gsurf->native->destroy(gsurf->native);
 473    FREE(gsurf);
 474 }
 475
 476 static EGLBoolean
 477 egl_g3d_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
 478 {
 479    if (_eglPutSurface(surf))
 480       destroy_surface(dpy, surf);
 481    return EGL_TRUE;
 482 }
 483
 484 static EGLBoolean
 485 egl_g3d_make_current(_EGLDriver *drv, _EGLDisplay *dpy,
 486                      _EGLSurface *draw, _EGLSurface *read, _EGLContext *ctx)
 487 {
 488    struct egl_g3d_context *gctx = egl_g3d_context(ctx);
 489    struct egl_g3d_surface *gdraw = egl_g3d_surface(draw);
 490    struct egl_g3d_surface *gread = egl_g3d_surface(read);
 491    struct egl_g3d_context *old_gctx;
 492    _EGLContext *old_ctx;
 493    _EGLSurface *old_draw, *old_read;
 494    EGLBoolean ok = EGL_TRUE;
 495
 496    /* make new bindings */
 497    if (!_eglBindContext(ctx, draw, read, &old_ctx, &old_draw, &old_read))
 498       return EGL_FALSE;
 499
 500    old_gctx = egl_g3d_context(old_ctx);
 501    if (old_gctx) {
 502       /* flush old context */
 503       old_gctx->stctxi->flush(old_gctx->stctxi, ST_FLUSH_FRONT, NULL);
 504    }
 505
 506    if (gctx) {
 507       ok = gctx->stapi->make_current(gctx->stapi, gctx->stctxi,
 508             (gdraw) ? gdraw->stfbi : NULL, (gread) ? gread->stfbi : NULL);
 509       if (ok) {
 510          if (gdraw) {
 511             if (gdraw->base.Type == EGL_WINDOW_BIT) {
 512                gctx->base.WindowRenderBuffer =
 513                   (gdraw->stvis.render_buffer == ST_ATTACHMENT_FRONT_LEFT) ?
 514                   EGL_SINGLE_BUFFER : EGL_BACK_BUFFER;
 515             }
 516          }
 517       }
 518    }
 519    else if (old_gctx) {
 520       ok = old_gctx->stapi->make_current(old_gctx->stapi, NULL, NULL, NULL);
 521       if (ok)
 522          old_gctx->base.WindowRenderBuffer = EGL_NONE;
 523    }
 524
 525    if (ok) {
 526       if (_eglPutContext(old_ctx))
 527          destroy_context(dpy, old_ctx);
 528       if (_eglPutSurface(old_draw))
 529          destroy_surface(dpy, old_draw);
 530       if (_eglPutSurface(old_read))
 531          destroy_surface(dpy, old_read);
 532    }
 533    else {
 534       /* undo the previous _eglBindContext */
 535       _eglBindContext(old_ctx, old_draw, old_read, &ctx, &draw, &read);
 536       assert(&gctx->base == ctx &&
 537              &gdraw->base == draw &&
 538              &gread->base == read);
 539
 540       _eglPutSurface(draw);
 541       _eglPutSurface(read);
 542       _eglPutContext(ctx);
 543
 544       _eglPutSurface(old_draw);
 545       _eglPutSurface(old_read);
 546       _eglPutContext(old_ctx);
 547    }
 548
 549    return ok;
 550 }
 551
 552 static EGLBoolean
 553 swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
 554              EGLint num_rects, const EGLint *rects, EGLBoolean preserve)
 555 {
 556    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 557    _EGLContext *ctx = _eglGetCurrentContext();
 558    struct egl_g3d_context *gctx = NULL;
 559    struct native_present_control ctrl;
 560
 561    /* no-op for pixmap or pbuffer surface */
 562    if (gsurf->base.Type == EGL_PIXMAP_BIT ||
 563        gsurf->base.Type == EGL_PBUFFER_BIT)
 564       return EGL_TRUE;
 565
 566    /* or when the surface is single-buffered */
 567    if (gsurf->stvis.render_buffer == ST_ATTACHMENT_FRONT_LEFT)
 568       return EGL_TRUE;
 569
 570    if (ctx && ctx->DrawSurface == surf)
 571       gctx = egl_g3d_context(ctx);
 572
 573    /* flush if the surface is current */
 574    if (gctx) {
 575       gctx->stctxi->flush(gctx->stctxi, ST_FLUSH_FRONT, NULL);
 576    }
 577
 578    memset(&ctrl, 0, sizeof(ctrl));
 579    ctrl.natt = NATIVE_ATTACHMENT_BACK_LEFT;
 580    ctrl.preserve = preserve;
 581    ctrl.swap_interval = gsurf->base.SwapInterval;
 582    ctrl.premultiplied_alpha = (gsurf->base.VGAlphaFormat == EGL_VG_ALPHA_FORMAT_PRE);
 583    ctrl.num_rects = num_rects;
 584    ctrl.rects = rects;
 585
 586    return gsurf->native->present(gsurf->native, &ctrl);
 587 }
 588
 589 static EGLBoolean
 590 egl_g3d_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
 591 {
 592    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 593
 594    return swap_buffers(drv, dpy, surf, 0, NULL,
 595                        (gsurf->base.SwapBehavior == EGL_BUFFER_PRESERVED));
 596 }
 597
 598 #ifdef EGL_NOK_swap_region
 599 static EGLBoolean
 600 egl_g3d_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
 601                             EGLint num_rects, const EGLint *rects)
 602 {
 603    /* Note: y=0=top */
 604    return swap_buffers(drv, dpy, surf, num_rects, rects, EGL_TRUE);
 605 }
 606 #endif /* EGL_NOK_swap_region */
 607
 608 static EGLBoolean
 609 egl_g3d_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
 610                         EGLint x, EGLint y, EGLint width, EGLint height)
 611 {
 612    EGLint rect[4];
 613
 614    if (x < 0 || y < 0 || width < 0 || height < 0)
 615       return _eglError(EGL_BAD_PARAMETER, "eglPostSubBufferNV");
 616
 617    /* clamp */
 618    if (x + width > surf->Width)
 619       width = surf->Width - x;
 620    if (y + height > surf->Height)
 621       height = surf->Height - y;
 622
 623    if (width <= 0 || height <= 0)
 624       return EGL_TRUE;
 625
 626    rect[0] = x;
 627    /* Note: y=0=bottom */
 628    rect[1] = surf->Height - y - height;
 629    rect[2] = width;
 630    rect[3] = height;
 631
 632    return swap_buffers(drv, dpy, surf, 1, rect, EGL_TRUE);
 633 }
 634
 635 static EGLBoolean
 636 egl_g3d_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
 637                      EGLNativePixmapType target)
 638 {
 639    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 640    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 641    _EGLContext *ctx = _eglGetCurrentContext();
 642
 643    if (!gsurf->render_texture)
 644       return EGL_TRUE;
 645
 646    /* flush if the surface is current */
 647    if (ctx && ctx->DrawSurface == &gsurf->base) {
 648       struct egl_g3d_context *gctx = egl_g3d_context(ctx);
 649       gctx->stctxi->flush(gctx->stctxi, ST_FLUSH_FRONT, NULL);
 650    }
 651
 652    return gdpy->native->copy_to_pixmap(gdpy->native,
 653          target, gsurf->render_texture);
 654 }
 655
 656 static EGLBoolean
 657 egl_g3d_wait_client(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx)
 658 {
 659    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 660    struct egl_g3d_context *gctx = egl_g3d_context(ctx);
 661    struct pipe_screen *screen = gdpy->native->screen;
 662    struct pipe_fence_handle *fence = NULL;
 663
 664    gctx->stctxi->flush(gctx->stctxi, ST_FLUSH_FRONT, &fence);
 665    if (fence) {
 666       screen->fence_finish(screen, fence, PIPE_TIMEOUT_INFINITE);
 667       screen->fence_reference(screen, &fence, NULL);
 668    }
 669
 670    return EGL_TRUE;
 671 }
 672
 673 static EGLBoolean
 674 egl_g3d_wait_native(_EGLDriver *drv, _EGLDisplay *dpy, EGLint engine)
 675 {
 676    _EGLContext *ctx = _eglGetCurrentContext();
 677
 678    if (engine != EGL_CORE_NATIVE_ENGINE)
 679       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
 680
 681    if (ctx && ctx->DrawSurface) {
 682       struct egl_g3d_surface *gsurf = egl_g3d_surface(ctx->DrawSurface);
 683
 684       if (gsurf->native)
 685          gsurf->native->wait(gsurf->native);
 686    }
 687
 688    return EGL_TRUE;
 689 }
 690
 691 static EGLBoolean
 692 egl_g3d_bind_tex_image(_EGLDriver *drv, _EGLDisplay *dpy,
 693                        _EGLSurface *surf, EGLint buffer)
 694 {
 695    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 696    _EGLContext *es1 = _eglGetAPIContext(EGL_OPENGL_ES_API);
 697    struct egl_g3d_context *gctx;
 698    enum pipe_format internal_format;
 699    enum st_texture_type target;
 700
 701    if (!gsurf || gsurf->base.Type != EGL_PBUFFER_BIT)
 702       return _eglError(EGL_BAD_SURFACE, "eglBindTexImage");
 703    if (buffer != EGL_BACK_BUFFER)
 704       return _eglError(EGL_BAD_PARAMETER, "eglBindTexImage");
 705    if (gsurf->base.BoundToTexture)
 706       return _eglError(EGL_BAD_ACCESS, "eglBindTexImage");
 707
 708    switch (gsurf->base.TextureFormat) {
 709    case EGL_TEXTURE_RGB:
 710       internal_format = PIPE_FORMAT_R8G8B8_UNORM;
 711       break;
 712    case EGL_TEXTURE_RGBA:
 713       internal_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 714       break;
 715    default:
 716       return _eglError(EGL_BAD_MATCH, "eglBindTexImage");
 717    }
 718
 719    switch (gsurf->base.TextureTarget) {
 720    case EGL_TEXTURE_2D:
 721       target = ST_TEXTURE_2D;
 722       break;
 723    default:
 724       return _eglError(EGL_BAD_MATCH, "eglBindTexImage");
 725    }
 726
 727    if (!es1)
 728       return EGL_TRUE;
 729    if (!gsurf->render_texture)
 730       return EGL_FALSE;
 731
 732    /* flush properly if the surface is bound */
 733    if (gsurf->base.CurrentContext) {
 734       gctx = egl_g3d_context(gsurf->base.CurrentContext);
 735       gctx->stctxi->flush(gctx->stctxi, ST_FLUSH_FRONT, NULL);
 736    }
 737
 738    gctx = egl_g3d_context(es1);
 739    if (gctx->stctxi->teximage) {
 740       if (!gctx->stctxi->teximage(gctx->stctxi, target,
 741                gsurf->base.MipmapLevel, internal_format,
 742                gsurf->render_texture, gsurf->base.MipmapTexture))
 743          return EGL_FALSE;
 744       gsurf->base.BoundToTexture = EGL_TRUE;
 745    }
 746
 747    return EGL_TRUE;
 748 }
 749
 750 static EGLBoolean
 751 egl_g3d_release_tex_image(_EGLDriver *drv, _EGLDisplay *dpy,
 752                           _EGLSurface *surf, EGLint buffer)
 753 {
 754    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 755
 756    if (!gsurf || gsurf->base.Type != EGL_PBUFFER_BIT ||
 757        !gsurf->base.BoundToTexture)
 758       return _eglError(EGL_BAD_SURFACE, "eglReleaseTexImage");
 759    if (buffer != EGL_BACK_BUFFER)
 760       return _eglError(EGL_BAD_PARAMETER, "eglReleaseTexImage");
 761
 762    if (gsurf->render_texture) {
 763       _EGLContext *ctx = _eglGetAPIContext(EGL_OPENGL_ES_API);
 764       struct egl_g3d_context *gctx = egl_g3d_context(ctx);
 765
 766       /* what if the context the surface binds to is no longer current? */
 767       if (gctx) {
 768          gctx->stctxi->teximage(gctx->stctxi, ST_TEXTURE_2D,
 769                gsurf->base.MipmapLevel, PIPE_FORMAT_NONE, NULL, FALSE);
 770       }
 771    }
 772
 773    gsurf->base.BoundToTexture = EGL_FALSE;
 774
 775    return EGL_TRUE;
 776 }
 777
 778 #ifdef EGL_MESA_screen_surface
 779
 780 static _EGLSurface *
 781 egl_g3d_create_screen_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 782                               _EGLConfig *conf, const EGLint *attribs)
 783 {
 784    struct egl_g3d_create_surface_arg arg;
 785
 786    memset(&arg, 0, sizeof(arg));
 787    arg.type = EGL_SCREEN_BIT_MESA;
 788
 789    return egl_g3d_create_surface(drv, dpy, conf, &arg, attribs);
 790 }
 791
 792 static EGLBoolean
 793 egl_g3d_show_screen_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 794                             _EGLScreen *scr, _EGLSurface *surf,
 795                             _EGLMode *mode)
 796 {
 797    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 798    struct egl_g3d_screen *gscr = egl_g3d_screen(scr);
 799    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 800    struct native_surface *nsurf;
 801    const struct native_mode *nmode;
 802    EGLBoolean changed;
 803
 804    if (gsurf) {
 805       EGLint idx;
 806
 807       if (!mode)
 808          return _eglError(EGL_BAD_MATCH, "eglShowSurfaceMESA");
 809       if (gsurf->base.Type != EGL_SCREEN_BIT_MESA)
 810          return _eglError(EGL_BAD_SURFACE, "eglShowScreenSurfaceMESA");
 811       if (gsurf->base.Width < mode->Width || gsurf->base.Height < mode->Height)
 812          return _eglError(EGL_BAD_MATCH,
 813                "eglShowSurfaceMESA(surface smaller than mode size)");
 814
 815       /* find the index of the mode */
 816       for (idx = 0; idx < gscr->base.NumModes; idx++)
 817          if (mode == &gscr->base.Modes[idx])
 818             break;
 819       if (idx >= gscr->base.NumModes) {
 820          return _eglError(EGL_BAD_MODE_MESA,
 821                "eglShowSurfaceMESA(unknown mode)");
 822       }
 823
 824       nsurf = gsurf->native;
 825       nmode = gscr->native_modes[idx];
 826    }
 827    else {
 828       if (mode)
 829          return _eglError(EGL_BAD_MATCH, "eglShowSurfaceMESA");
 830
 831       /* disable the screen */
 832       nsurf = NULL;
 833       nmode = NULL;
 834    }
 835
 836    /* TODO surface panning by CRTC choosing */
 837    changed = gdpy->native->modeset->program(gdpy->native, 0, nsurf,
 838          gscr->base.OriginX, gscr->base.OriginY, &gscr->native, 1, nmode);
 839    if (changed) {
 840       gscr->base.CurrentSurface = &gsurf->base;
 841       gscr->base.CurrentMode = mode;
 842    }
 843
 844    return changed;
 845 }
 846
 847 #endif /* EGL_MESA_screen_surface */
 848
 849 #ifdef EGL_WL_bind_wayland_display
 850
 851 static EGLBoolean
 852 egl_g3d_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *dpy,
 853                                 struct wl_display *wl_dpy)
 854 {
 855    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 856
 857    if (!gdpy->native->wayland_bufmgr)
 858       return EGL_FALSE;
 859
 860    return gdpy->native->wayland_bufmgr->bind_display(gdpy->native, wl_dpy);
 861 }
 862
 863 static EGLBoolean
 864 egl_g3d_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *dpy,
 865                                   struct wl_display *wl_dpy)
 866 {
 867    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 868
 869    if (!gdpy->native->wayland_bufmgr)
 870       return EGL_FALSE;
 871
 872    return gdpy->native->wayland_bufmgr->unbind_display(gdpy->native, wl_dpy);
 873 }
 874
 875 static EGLBoolean
 876 egl_g3d_query_wayland_buffer_wl(_EGLDriver *drv, _EGLDisplay *dpy,
 877                                 struct wl_resource *buffer,
 878                                 EGLint attribute, EGLint *value)
 879 {
 880    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 881
 882    if (!gdpy->native->wayland_bufmgr)
 883       return EGL_FALSE;
 884
 885    return gdpy->native->wayland_bufmgr->query_buffer(gdpy->native,
 886                                                      buffer, attribute, value);
 887 }
 888 #endif /* EGL_WL_bind_wayland_display */
 889
 890 void
 891 egl_g3d_init_driver_api(_EGLDriver *drv)
 892 {
 893    _eglInitDriverFallbacks(drv);
 894
 895    drv->API.ChooseConfig = egl_g3d_choose_config;
 896
 897    drv->API.CreateContext = egl_g3d_create_context;
 898    drv->API.DestroyContext = egl_g3d_destroy_context;
 899    drv->API.CreateWindowSurface = egl_g3d_create_window_surface;
 900    drv->API.CreatePixmapSurface = egl_g3d_create_pixmap_surface;
 901    drv->API.CreatePbufferSurface = egl_g3d_create_pbuffer_surface;
 902    drv->API.CreatePbufferFromClientBuffer = egl_g3d_create_pbuffer_from_client_buffer;
 903    drv->API.DestroySurface = egl_g3d_destroy_surface;
 904    drv->API.MakeCurrent = egl_g3d_make_current;
 905    drv->API.SwapBuffers = egl_g3d_swap_buffers;
 906    drv->API.CopyBuffers = egl_g3d_copy_buffers;
 907    drv->API.WaitClient = egl_g3d_wait_client;
 908    drv->API.WaitNative = egl_g3d_wait_native;
 909
 910    drv->API.BindTexImage = egl_g3d_bind_tex_image;
 911    drv->API.ReleaseTexImage = egl_g3d_release_tex_image;
 912
 913    drv->API.CreateImageKHR = egl_g3d_create_image;
 914    drv->API.DestroyImageKHR = egl_g3d_destroy_image;
 915 #ifdef EGL_MESA_drm_image
 916    drv->API.CreateDRMImageMESA = egl_g3d_create_drm_image;
 917    drv->API.ExportDRMImageMESA = egl_g3d_export_drm_image;
 918 #endif
 919 #ifdef EGL_WL_bind_wayland_display
 920    drv->API.BindWaylandDisplayWL = egl_g3d_bind_wayland_display_wl;
 921    drv->API.UnbindWaylandDisplayWL = egl_g3d_unbind_wayland_display_wl;
 922    drv->API.QueryWaylandBufferWL = egl_g3d_query_wayland_buffer_wl;
 923 #endif
 924
 925    drv->API.CreateSyncKHR = egl_g3d_create_sync;
 926    drv->API.DestroySyncKHR = egl_g3d_destroy_sync;
 927    drv->API.ClientWaitSyncKHR = egl_g3d_client_wait_sync;
 928    drv->API.SignalSyncKHR = egl_g3d_signal_sync;
 929
 930 #ifdef EGL_MESA_screen_surface
 931    drv->API.CreateScreenSurfaceMESA = egl_g3d_create_screen_surface;
 932    drv->API.ShowScreenSurfaceMESA = egl_g3d_show_screen_surface;
 933 #endif
 934
 935 #ifdef EGL_NOK_swap_region
 936    drv->API.SwapBuffersRegionNOK = egl_g3d_swap_buffers_region;
 937 #endif
 938
 939    drv->API.PostSubBufferNV = egl_g3d_post_sub_buffer;
 940 }