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
  34 #include "egl_g3d.h"
  35 #include "egl_g3d_api.h"
  36 #include "egl_g3d_image.h"
  37 #include "egl_g3d_st.h"
  38 #include "native.h"
  39
  40 /**
  41  * Return the state tracker for the given context.
  42  */
  43 static struct st_api *
  44 egl_g3d_choose_st(_EGLDriver *drv, _EGLContext *ctx)
  45 {
  46    struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
  47    struct st_api *stapi;
  48    EGLint idx = -1;
  49
  50    switch (ctx->ClientAPI) {
  51    case EGL_OPENGL_ES_API:
  52       switch (ctx->ClientVersion) {
  53       case 1:
  54          idx = ST_API_OPENGL_ES1;
  55          break;
  56       case 2:
  57          idx = ST_API_OPENGL_ES2;
  58          break;
  59       default:
  60          _eglLog(_EGL_WARNING, "unknown client version %d",
  61                ctx->ClientVersion);
  62          break;
  63       }
  64       break;
  65    case EGL_OPENVG_API:
  66       idx = ST_API_OPENVG;
  67       break;
  68    case EGL_OPENGL_API:
  69       idx = ST_API_OPENGL;
  70       break;
  71    default:
  72       _eglLog(_EGL_WARNING, "unknown client API 0x%04x", ctx->ClientAPI);
  73       break;
  74    }
  75
  76    stapi = (idx >= 0) ? gdrv->stapis[idx] : NULL;
  77    return stapi;
  78 }
  79
  80 static _EGLContext *
  81 egl_g3d_create_context(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
  82                        _EGLContext *share, const EGLint *attribs)
  83 {
  84    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
  85    struct egl_g3d_context *gshare = egl_g3d_context(share);
  86    struct egl_g3d_config *gconf = egl_g3d_config(conf);
  87    struct egl_g3d_context *gctx;
  88
  89    gctx = CALLOC_STRUCT(egl_g3d_context);
  90    if (!gctx) {
  91       _eglError(EGL_BAD_ALLOC, "eglCreateContext");
  92       return NULL;
  93    }
  94
  95    if (!_eglInitContext(&gctx->base, dpy, conf, attribs)) {
  96       FREE(gctx);
  97       return NULL;
  98    }
  99
 100    gctx->stapi = egl_g3d_choose_st(drv, &gctx->base);
 101    if (!gctx->stapi) {
 102       FREE(gctx);
 103       return NULL;
 104    }
 105
 106    gctx->stctxi = gctx->stapi->create_context(gctx->stapi, gdpy->smapi,
 107          &gconf->stvis, (gshare) ? gshare->stctxi : NULL);
 108    if (!gctx->stctxi) {
 109       FREE(gctx);
 110       return NULL;
 111    }
 112
 113    gctx->stctxi->st_manager_private = (void *) &gctx->base;
 114
 115    return &gctx->base;
 116 }
 117
 118 /**
 119  * Destroy a context.
 120  */
 121 static void
 122 destroy_context(_EGLDisplay *dpy, _EGLContext *ctx)
 123 {
 124    struct egl_g3d_context *gctx = egl_g3d_context(ctx);
 125
 126    /* FIXME a context might live longer than its display */
 127    if (!dpy->Initialized)
 128       _eglLog(_EGL_FATAL, "destroy a context with an unitialized display");
 129
 130    gctx->stctxi->destroy(gctx->stctxi);
 131
 132    FREE(gctx);
 133 }
 134
 135 static EGLBoolean
 136 egl_g3d_destroy_context(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx)
 137 {
 138    if (!_eglIsContextBound(ctx))
 139       destroy_context(dpy, ctx);
 140    return EGL_TRUE;
 141 }
 142
 143 struct egl_g3d_create_surface_arg {
 144    EGLint type;
 145    union {
 146       EGLNativeWindowType win;
 147       EGLNativePixmapType pix;
 148    } u;
 149 };
 150
 151 static _EGLSurface *
 152 egl_g3d_create_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
 153                        struct egl_g3d_create_surface_arg *arg,
 154                        const EGLint *attribs)
 155 {
 156    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 157    struct egl_g3d_config *gconf = egl_g3d_config(conf);
 158    struct egl_g3d_surface *gsurf;
 159    struct native_surface *nsurf;
 160    const char *err;
 161
 162    switch (arg->type) {
 163    case EGL_WINDOW_BIT:
 164       err = "eglCreateWindowSurface";
 165       break;
 166    case EGL_PIXMAP_BIT:
 167       err = "eglCreatePixmapSurface";
 168       break;
 169 #ifdef EGL_MESA_screen_surface
 170    case EGL_SCREEN_BIT_MESA:
 171       err = "eglCreateScreenSurface";
 172       break;
 173 #endif
 174    default:
 175       err = "eglCreateUnknownSurface";
 176       break;
 177    }
 178
 179    gsurf = CALLOC_STRUCT(egl_g3d_surface);
 180    if (!gsurf) {
 181       _eglError(EGL_BAD_ALLOC, err);
 182       return NULL;
 183    }
 184
 185    if (!_eglInitSurface(&gsurf->base, dpy, arg->type, conf, attribs)) {
 186       FREE(gsurf);
 187       return NULL;
 188    }
 189
 190    /* create the native surface */
 191    switch (arg->type) {
 192    case EGL_WINDOW_BIT:
 193       nsurf = gdpy->native->create_window_surface(gdpy->native,
 194             arg->u.win, gconf->native);
 195       break;
 196    case EGL_PIXMAP_BIT:
 197       nsurf = gdpy->native->create_pixmap_surface(gdpy->native,
 198             arg->u.pix, gconf->native);
 199       break;
 200 #ifdef EGL_MESA_screen_surface
 201    case EGL_SCREEN_BIT_MESA:
 202       /* prefer back buffer (move to _eglInitSurface?) */
 203       gsurf->base.RenderBuffer = EGL_BACK_BUFFER;
 204       nsurf = gdpy->native->modeset->create_scanout_surface(gdpy->native,
 205             gconf->native, gsurf->base.Width, gsurf->base.Height);
 206       break;
 207 #endif
 208    default:
 209       nsurf = NULL;
 210       break;
 211    }
 212
 213    if (!nsurf) {
 214       FREE(gsurf);
 215       return NULL;
 216    }
 217    /* initialize the geometry */
 218    if (!nsurf->validate(nsurf, 0x0, &gsurf->sequence_number, NULL,
 219             &gsurf->base.Width, &gsurf->base.Height)) {
 220       nsurf->destroy(nsurf);
 221       FREE(gsurf);
 222       return NULL;
 223    }
 224
 225    gsurf->stvis = gconf->stvis;
 226    if (gsurf->base.RenderBuffer == EGL_SINGLE_BUFFER)
 227       gsurf->stvis.render_buffer = ST_ATTACHMENT_FRONT_LEFT;
 228
 229    gsurf->stfbi = egl_g3d_create_st_framebuffer(&gsurf->base);
 230    if (!gsurf->stfbi) {
 231       nsurf->destroy(nsurf);
 232       FREE(gsurf);
 233       return NULL;
 234    }
 235
 236    nsurf->user_data = &gsurf->base;
 237    gsurf->native = nsurf;
 238
 239    return &gsurf->base;
 240 }
 241
 242 static _EGLSurface *
 243 egl_g3d_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 244                               _EGLConfig *conf, EGLNativeWindowType win,
 245                               const EGLint *attribs)
 246 {
 247    struct egl_g3d_create_surface_arg arg;
 248
 249    memset(&arg, 0, sizeof(arg));
 250    arg.type = EGL_WINDOW_BIT;
 251    arg.u.win = win;
 252
 253    return egl_g3d_create_surface(drv, dpy, conf, &arg, attribs);
 254 }
 255
 256 static _EGLSurface *
 257 egl_g3d_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 258                               _EGLConfig *conf, EGLNativePixmapType pix,
 259                               const EGLint *attribs)
 260 {
 261    struct egl_g3d_create_surface_arg arg;
 262
 263    memset(&arg, 0, sizeof(arg));
 264    arg.type = EGL_PIXMAP_BIT;
 265    arg.u.pix = pix;
 266
 267    return egl_g3d_create_surface(drv, dpy, conf, &arg, attribs);
 268 }
 269
 270 static struct egl_g3d_surface *
 271 create_pbuffer_surface(_EGLDisplay *dpy, _EGLConfig *conf,
 272                        const EGLint *attribs, const char *func)
 273 {
 274    struct egl_g3d_config *gconf = egl_g3d_config(conf);
 275    struct egl_g3d_surface *gsurf;
 276
 277    gsurf = CALLOC_STRUCT(egl_g3d_surface);
 278    if (!gsurf) {
 279       _eglError(EGL_BAD_ALLOC, func);
 280       return NULL;
 281    }
 282
 283    if (!_eglInitSurface(&gsurf->base, dpy, EGL_PBUFFER_BIT, conf, attribs)) {
 284       FREE(gsurf);
 285       return NULL;
 286    }
 287
 288    gsurf->stvis = gconf->stvis;
 289
 290    gsurf->stfbi = egl_g3d_create_st_framebuffer(&gsurf->base);
 291    if (!gsurf->stfbi) {
 292       FREE(gsurf);
 293       return NULL;
 294    }
 295
 296    return gsurf;
 297 }
 298
 299 static _EGLSurface *
 300 egl_g3d_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 301                                _EGLConfig *conf, const EGLint *attribs)
 302 {
 303    struct egl_g3d_surface *gsurf;
 304    struct pipe_resource *ptex = NULL;
 305
 306    gsurf = create_pbuffer_surface(dpy, conf, attribs,
 307          "eglCreatePbufferSurface");
 308    if (!gsurf)
 309       return NULL;
 310
 311    gsurf->client_buffer_type = EGL_NONE;
 312
 313    if (!gsurf->stfbi->validate(gsurf->stfbi,
 314             &gsurf->stvis.render_buffer, 1, &ptex)) {
 315       egl_g3d_destroy_st_framebuffer(gsurf->stfbi);
 316       FREE(gsurf);
 317       return NULL;
 318    }
 319
 320    return &gsurf->base;
 321 }
 322
 323 static _EGLSurface *
 324 egl_g3d_create_pbuffer_from_client_buffer(_EGLDriver *drv, _EGLDisplay *dpy,
 325                                           EGLenum buftype,
 326                                           EGLClientBuffer buffer,
 327                                           _EGLConfig *conf,
 328                                           const EGLint *attribs)
 329 {
 330    struct egl_g3d_surface *gsurf;
 331    struct pipe_resource *ptex = NULL;
 332    EGLint pbuffer_attribs[32];
 333    EGLint count, i;
 334
 335    switch (buftype) {
 336    case EGL_OPENVG_IMAGE:
 337       break;
 338    default:
 339       _eglError(EGL_BAD_PARAMETER, "eglCreatePbufferFromClientBuffer");
 340       return NULL;
 341       break;
 342    }
 343
 344    /* parse the attributes first */
 345    count = 0;
 346    for (i = 0; attribs && attribs[i] != EGL_NONE; i++) {
 347       EGLint attr = attribs[i++];
 348       EGLint val = attribs[i];
 349       EGLint err = EGL_SUCCESS;
 350
 351       switch (attr) {
 352       case EGL_TEXTURE_FORMAT:
 353       case EGL_TEXTURE_TARGET:
 354       case EGL_MIPMAP_TEXTURE:
 355          pbuffer_attribs[count++] = attr;
 356          pbuffer_attribs[count++] = val;
 357          break;
 358       default:
 359          err = EGL_BAD_ATTRIBUTE;
 360          break;
 361       }
 362       /* bail out */
 363       if (err != EGL_SUCCESS) {
 364          _eglError(err, "eglCreatePbufferFromClientBuffer");
 365          return NULL;
 366       }
 367    }
 368
 369    pbuffer_attribs[count++] = EGL_NONE;
 370
 371    gsurf = create_pbuffer_surface(dpy, conf, pbuffer_attribs,
 372          "eglCreatePbufferFromClientBuffer");
 373    if (!gsurf)
 374       return NULL;
 375
 376    gsurf->client_buffer_type = buftype;
 377    gsurf->client_buffer = buffer;
 378
 379    if (!gsurf->stfbi->validate(gsurf->stfbi,
 380             &gsurf->stvis.render_buffer, 1, &ptex)) {
 381       egl_g3d_destroy_st_framebuffer(gsurf->stfbi);
 382       FREE(gsurf);
 383       return NULL;
 384    }
 385
 386    return &gsurf->base;
 387 }
 388
 389 /**
 390  * Destroy a surface.
 391  */
 392 static void
 393 destroy_surface(_EGLDisplay *dpy, _EGLSurface *surf)
 394 {
 395    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 396
 397    /* FIXME a surface might live longer than its display */
 398    if (!dpy->Initialized)
 399       _eglLog(_EGL_FATAL, "destroy a surface with an unitialized display");
 400
 401    pipe_resource_reference(&gsurf->render_texture, NULL);
 402    egl_g3d_destroy_st_framebuffer(gsurf->stfbi);
 403    if (gsurf->native)
 404       gsurf->native->destroy(gsurf->native);
 405    FREE(gsurf);
 406 }
 407
 408 static EGLBoolean
 409 egl_g3d_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
 410 {
 411    if (!_eglIsSurfaceBound(surf))
 412       destroy_surface(dpy, surf);
 413    return EGL_TRUE;
 414 }
 415
 416 static EGLBoolean
 417 egl_g3d_make_current(_EGLDriver *drv, _EGLDisplay *dpy,
 418                      _EGLSurface *draw, _EGLSurface *read, _EGLContext *ctx)
 419 {
 420    struct egl_g3d_context *gctx = egl_g3d_context(ctx);
 421    struct egl_g3d_surface *gdraw = egl_g3d_surface(draw);
 422    struct egl_g3d_surface *gread = egl_g3d_surface(read);
 423    struct egl_g3d_context *old_gctx;
 424    EGLBoolean ok = EGL_TRUE;
 425
 426    /* bind the new context and return the "orphaned" one */
 427    if (!_eglBindContext(&ctx, &draw, &read))
 428       return EGL_FALSE;
 429    old_gctx = egl_g3d_context(ctx);
 430
 431    if (old_gctx) {
 432       /* flush old context */
 433       old_gctx->stctxi->flush(old_gctx->stctxi,
 434             PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
 435    }
 436
 437    if (gctx) {
 438       ok = gctx->stapi->make_current(gctx->stapi, gctx->stctxi,
 439             (gdraw) ? gdraw->stfbi : NULL, (gread) ? gread->stfbi : NULL);
 440       if (ok) {
 441          gctx->stctxi->notify_invalid_framebuffer(gctx->stctxi, gdraw->stfbi);
 442          if (gread != gdraw) {
 443             gctx->stctxi->notify_invalid_framebuffer(gctx->stctxi,
 444                   gread->stfbi);
 445          }
 446
 447          if (gdraw->base.Type == EGL_WINDOW_BIT) {
 448             gctx->base.WindowRenderBuffer =
 449                (gdraw->stvis.render_buffer == ST_ATTACHMENT_FRONT_LEFT) ?
 450                EGL_SINGLE_BUFFER : EGL_BACK_BUFFER;
 451          }
 452       }
 453    }
 454    else if (old_gctx) {
 455       ok = old_gctx->stapi->make_current(old_gctx->stapi, NULL, NULL, NULL);
 456       old_gctx->base.WindowRenderBuffer = EGL_NONE;
 457    }
 458
 459    if (ctx && !_eglIsContextLinked(ctx))
 460       destroy_context(dpy, ctx);
 461    if (draw && !_eglIsSurfaceLinked(draw))
 462       destroy_surface(dpy, draw);
 463    if (read && read != draw && !_eglIsSurfaceLinked(read))
 464       destroy_surface(dpy, read);
 465
 466    return ok;
 467 }
 468
 469 static EGLBoolean
 470 egl_g3d_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
 471 {
 472    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 473    _EGLContext *ctx = _eglGetCurrentContext();
 474    struct egl_g3d_context *gctx = NULL;
 475
 476    /* no-op for pixmap or pbuffer surface */
 477    if (gsurf->base.Type == EGL_PIXMAP_BIT ||
 478        gsurf->base.Type == EGL_PBUFFER_BIT)
 479       return EGL_TRUE;
 480
 481    /* or when the surface is single-buffered */
 482    if (gsurf->stvis.render_buffer == ST_ATTACHMENT_FRONT_LEFT)
 483       return EGL_TRUE;
 484
 485    if (ctx && ctx->DrawSurface == surf)
 486       gctx = egl_g3d_context(ctx);
 487
 488    /* flush if the surface is current */
 489    if (gctx) {
 490       gctx->stctxi->flush(gctx->stctxi,
 491             PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
 492    }
 493
 494    return gsurf->native->swap_buffers(gsurf->native);
 495 }
 496
 497 /**
 498  * Get the pipe surface of the given attachment of the native surface.
 499  */
 500 static struct pipe_resource *
 501 get_pipe_resource(struct native_display *ndpy, struct native_surface *nsurf,
 502                   enum native_attachment natt)
 503 {
 504    struct pipe_resource *textures[NUM_NATIVE_ATTACHMENTS];
 505
 506    textures[natt] = NULL;
 507    nsurf->validate(nsurf, 1 << natt, NULL, textures, NULL, NULL);
 508
 509    return textures[natt];
 510 }
 511
 512 static EGLBoolean
 513 egl_g3d_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
 514                      EGLNativePixmapType target)
 515 {
 516    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 517    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 518    _EGLContext *ctx = _eglGetCurrentContext();
 519    struct egl_g3d_config *gconf;
 520    struct native_surface *nsurf;
 521    struct pipe_resource *ptex;
 522
 523    if (!gsurf->render_texture)
 524       return EGL_TRUE;
 525
 526    gconf = egl_g3d_config(egl_g3d_find_pixmap_config(dpy, target));
 527    if (!gconf)
 528       return _eglError(EGL_BAD_NATIVE_PIXMAP, "eglCopyBuffers");
 529
 530    nsurf = gdpy->native->create_pixmap_surface(gdpy->native,
 531          target, gconf->native);
 532    if (!nsurf)
 533       return _eglError(EGL_BAD_NATIVE_PIXMAP, "eglCopyBuffers");
 534
 535    /* flush if the surface is current */
 536    if (ctx && ctx->DrawSurface == &gsurf->base) {
 537       struct egl_g3d_context *gctx = egl_g3d_context(ctx);
 538       gctx->stctxi->flush(gctx->stctxi,
 539             PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
 540    }
 541
 542    /* create a pipe context to copy surfaces */
 543    if (!gdpy->pipe) {
 544       gdpy->pipe =
 545          gdpy->native->screen->context_create(gdpy->native->screen, NULL);
 546       if (!gdpy->pipe)
 547          return EGL_FALSE;
 548    }
 549
 550    ptex = get_pipe_resource(gdpy->native, nsurf, NATIVE_ATTACHMENT_FRONT_LEFT);
 551    if (ptex) {
 552       struct pipe_resource *psrc = gsurf->render_texture;
 553       struct pipe_subresource subsrc, subdst;
 554       subsrc.face = 0;
 555       subsrc.level = 0;
 556       subdst.face = 0;
 557       subdst.level = 0;
 558
 559       if (psrc) {
 560          gdpy->pipe->resource_copy_region(gdpy->pipe, ptex, subdst, 0, 0, 0,
 561                gsurf->render_texture, subsrc, 0, 0, 0, ptex->width0, ptex->height0);
 562
 563          nsurf->flush_frontbuffer(nsurf);
 564       }
 565
 566       pipe_resource_reference(&ptex, NULL);
 567    }
 568
 569    nsurf->destroy(nsurf);
 570
 571    return EGL_TRUE;
 572 }
 573
 574 static EGLBoolean
 575 egl_g3d_wait_client(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx)
 576 {
 577    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 578    struct egl_g3d_context *gctx = egl_g3d_context(ctx);
 579    struct pipe_screen *screen = gdpy->native->screen;
 580    struct pipe_fence_handle *fence = NULL;
 581
 582    gctx->stctxi->flush(gctx->stctxi,
 583          PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, &fence);
 584    screen->fence_finish(screen, fence, 0);
 585    screen->fence_reference(screen, &fence, NULL);
 586
 587    return EGL_TRUE;
 588 }
 589
 590 static EGLBoolean
 591 egl_g3d_wait_native(_EGLDriver *drv, _EGLDisplay *dpy, EGLint engine)
 592 {
 593    _EGLContext *ctx = _eglGetCurrentContext();
 594
 595    if (engine != EGL_CORE_NATIVE_ENGINE)
 596       return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
 597
 598    if (ctx && ctx->DrawSurface) {
 599       struct egl_g3d_surface *gsurf = egl_g3d_surface(ctx->DrawSurface);
 600
 601       if (gsurf->native)
 602          gsurf->native->wait(gsurf->native);
 603    }
 604
 605    return EGL_TRUE;
 606 }
 607
 608 static EGLBoolean
 609 egl_g3d_bind_tex_image(_EGLDriver *drv, _EGLDisplay *dpy,
 610                        _EGLSurface *surf, EGLint buffer)
 611 {
 612    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 613    _EGLContext *es1 = _eglGetAPIContext(EGL_OPENGL_ES_API);
 614    struct egl_g3d_context *gctx;
 615    enum pipe_format internal_format;
 616    enum st_texture_type target;
 617
 618    if (!gsurf || gsurf->base.Type != EGL_PBUFFER_BIT)
 619       return _eglError(EGL_BAD_SURFACE, "eglBindTexImage");
 620    if (buffer != EGL_BACK_BUFFER)
 621       return _eglError(EGL_BAD_PARAMETER, "eglBindTexImage");
 622    if (gsurf->base.BoundToTexture)
 623       return _eglError(EGL_BAD_ACCESS, "eglBindTexImage");
 624
 625    switch (gsurf->base.TextureFormat) {
 626    case EGL_TEXTURE_RGB:
 627       internal_format = PIPE_FORMAT_R8G8B8_UNORM;
 628       break;
 629    case EGL_TEXTURE_RGBA:
 630       internal_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 631       break;
 632    default:
 633       return _eglError(EGL_BAD_MATCH, "eglBindTexImage");
 634    }
 635
 636    switch (gsurf->base.TextureTarget) {
 637    case EGL_TEXTURE_2D:
 638       target = ST_TEXTURE_2D;
 639       break;
 640    default:
 641       return _eglError(EGL_BAD_MATCH, "eglBindTexImage");
 642    }
 643
 644    if (!es1)
 645       return EGL_TRUE;
 646    if (!gsurf->render_texture)
 647       return EGL_FALSE;
 648
 649    /* flush properly if the surface is bound */
 650    if (gsurf->base.CurrentContext) {
 651       gctx = egl_g3d_context(gsurf->base.CurrentContext);
 652       gctx->stctxi->flush(gctx->stctxi,
 653             PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
 654    }
 655
 656    gctx = egl_g3d_context(es1);
 657    if (gctx->stctxi->teximage) {
 658       if (!gctx->stctxi->teximage(gctx->stctxi, target,
 659                gsurf->base.MipmapLevel, internal_format,
 660                gsurf->render_texture, gsurf->base.MipmapTexture))
 661          return EGL_FALSE;
 662       gsurf->base.BoundToTexture = EGL_TRUE;
 663    }
 664
 665    return EGL_TRUE;
 666 }
 667
 668 static EGLBoolean
 669 egl_g3d_release_tex_image(_EGLDriver *drv, _EGLDisplay *dpy,
 670                           _EGLSurface *surf, EGLint buffer)
 671 {
 672    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 673
 674    if (!gsurf || gsurf->base.Type != EGL_PBUFFER_BIT ||
 675        !gsurf->base.BoundToTexture)
 676       return _eglError(EGL_BAD_SURFACE, "eglReleaseTexImage");
 677    if (buffer != EGL_BACK_BUFFER)
 678       return _eglError(EGL_BAD_PARAMETER, "eglReleaseTexImage");
 679
 680    if (gsurf->render_texture) {
 681       _EGLContext *ctx = _eglGetAPIContext(EGL_OPENGL_ES_API);
 682       struct egl_g3d_context *gctx = egl_g3d_context(ctx);
 683
 684       /* what if the context the surface binds to is no longer current? */
 685       if (gctx) {
 686          gctx->stctxi->teximage(gctx->stctxi, ST_TEXTURE_2D,
 687                gsurf->base.MipmapLevel, PIPE_FORMAT_NONE, NULL, FALSE);
 688       }
 689    }
 690
 691    gsurf->base.BoundToTexture = EGL_FALSE;
 692
 693    return EGL_TRUE;
 694 }
 695
 696 #ifdef EGL_MESA_screen_surface
 697
 698 static _EGLSurface *
 699 egl_g3d_create_screen_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 700                               _EGLConfig *conf, const EGLint *attribs)
 701 {
 702    struct egl_g3d_create_surface_arg arg;
 703
 704    memset(&arg, 0, sizeof(arg));
 705    arg.type = EGL_SCREEN_BIT_MESA;
 706
 707    return egl_g3d_create_surface(drv, dpy, conf, &arg, attribs);
 708 }
 709
 710 static EGLBoolean
 711 egl_g3d_show_screen_surface(_EGLDriver *drv, _EGLDisplay *dpy,
 712                             _EGLScreen *scr, _EGLSurface *surf,
 713                             _EGLMode *mode)
 714 {
 715    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 716    struct egl_g3d_screen *gscr = egl_g3d_screen(scr);
 717    struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
 718    struct native_surface *nsurf;
 719    const struct native_mode *nmode;
 720    EGLBoolean changed;
 721
 722    if (gsurf) {
 723       EGLint idx;
 724
 725       if (!mode)
 726          return _eglError(EGL_BAD_MATCH, "eglShowSurfaceMESA");
 727       if (gsurf->base.Type != EGL_SCREEN_BIT_MESA)
 728          return _eglError(EGL_BAD_SURFACE, "eglShowScreenSurfaceMESA");
 729       if (gsurf->base.Width < mode->Width || gsurf->base.Height < mode->Height)
 730          return _eglError(EGL_BAD_MATCH,
 731                "eglShowSurfaceMESA(surface smaller than mode size)");
 732
 733       /* find the index of the mode */
 734       for (idx = 0; idx < gscr->base.NumModes; idx++)
 735          if (mode == &gscr->base.Modes[idx])
 736             break;
 737       if (idx >= gscr->base.NumModes) {
 738          return _eglError(EGL_BAD_MODE_MESA,
 739                "eglShowSurfaceMESA(unknown mode)");
 740       }
 741
 742       nsurf = gsurf->native;
 743       nmode = gscr->native_modes[idx];
 744    }
 745    else {
 746       if (mode)
 747          return _eglError(EGL_BAD_MATCH, "eglShowSurfaceMESA");
 748
 749       /* disable the screen */
 750       nsurf = NULL;
 751       nmode = NULL;
 752    }
 753
 754    /* TODO surface panning by CRTC choosing */
 755    changed = gdpy->native->modeset->program(gdpy->native, 0, nsurf,
 756          gscr->base.OriginX, gscr->base.OriginY, &gscr->native, 1, nmode);
 757    if (changed) {
 758       gscr->base.CurrentSurface = &gsurf->base;
 759       gscr->base.CurrentMode = mode;
 760    }
 761
 762    return changed;
 763 }
 764
 765 #endif /* EGL_MESA_screen_surface */
 766
 767 /**
 768  * Find a config that supports the pixmap.
 769  */
 770 _EGLConfig *
 771 egl_g3d_find_pixmap_config(_EGLDisplay *dpy, EGLNativePixmapType pix)
 772 {
 773    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 774    struct egl_g3d_config *gconf;
 775    EGLint i;
 776
 777    for (i = 0; i < dpy->NumConfigs; i++) {
 778       gconf = egl_g3d_config(dpy->Configs[i]);
 779       if (gdpy->native->is_pixmap_supported(gdpy->native, pix, gconf->native))
 780          break;
 781    }
 782
 783    return (i < dpy->NumConfigs) ? &gconf->base : NULL;
 784 }
 785
 786 void
 787 egl_g3d_init_driver_api(_EGLDriver *drv)
 788 {
 789    _eglInitDriverFallbacks(drv);
 790
 791    drv->API.CreateContext = egl_g3d_create_context;
 792    drv->API.DestroyContext = egl_g3d_destroy_context;
 793    drv->API.CreateWindowSurface = egl_g3d_create_window_surface;
 794    drv->API.CreatePixmapSurface = egl_g3d_create_pixmap_surface;
 795    drv->API.CreatePbufferSurface = egl_g3d_create_pbuffer_surface;
 796    drv->API.CreatePbufferFromClientBuffer = egl_g3d_create_pbuffer_from_client_buffer;
 797    drv->API.DestroySurface = egl_g3d_destroy_surface;
 798    drv->API.MakeCurrent = egl_g3d_make_current;
 799    drv->API.SwapBuffers = egl_g3d_swap_buffers;
 800    drv->API.CopyBuffers = egl_g3d_copy_buffers;
 801    drv->API.WaitClient = egl_g3d_wait_client;
 802    drv->API.WaitNative = egl_g3d_wait_native;
 803
 804    drv->API.BindTexImage = egl_g3d_bind_tex_image;
 805    drv->API.ReleaseTexImage = egl_g3d_release_tex_image;
 806
 807    drv->API.CreateImageKHR = egl_g3d_create_image;
 808    drv->API.DestroyImageKHR = egl_g3d_destroy_image;
 809
 810 #ifdef EGL_MESA_screen_surface
 811    drv->API.CreateScreenSurfaceMESA = egl_g3d_create_screen_surface;
 812    drv->API.ShowScreenSurfaceMESA = egl_g3d_show_screen_surface;
 813 #endif
 814 }