ui/egl-helpers.c

   1 /*
   2  * Copyright (C) 2015-2016 Gerd Hoffmann <kraxel@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17 #include "qemu/osdep.h"
  18
  19 #include "qemu/drm.h"
  20 #include "qemu/error-report.h"
  21 #include "ui/console.h"
  22 #include "ui/egl-helpers.h"
  23 #include "sysemu/sysemu.h"
  24 #include "qapi/error.h"
  25 #include "trace.h"
  26
  27 EGLDisplay *qemu_egl_display;
  28 EGLConfig qemu_egl_config;
  29 DisplayGLMode qemu_egl_mode;
  30 bool qemu_egl_angle_d3d;
  31
  32 /* ------------------------------------------------------------------ */
  33
  34 const char *qemu_egl_get_error_string(void)
  35 {
  36     EGLint error = eglGetError();
  37
  38     switch (error) {
  39     case EGL_SUCCESS:
  40         return "EGL_SUCCESS";
  41     case EGL_NOT_INITIALIZED:
  42         return "EGL_NOT_INITIALIZED";
  43     case EGL_BAD_ACCESS:
  44         return "EGL_BAD_ACCESS";
  45     case EGL_BAD_ALLOC:
  46         return "EGL_BAD_ALLOC";
  47     case EGL_BAD_ATTRIBUTE:
  48         return "EGL_BAD_ATTRIBUTE";
  49     case EGL_BAD_CONTEXT:
  50         return "EGL_BAD_CONTEXT";
  51     case EGL_BAD_CONFIG:
  52         return "EGL_BAD_CONFIG";
  53     case EGL_BAD_CURRENT_SURFACE:
  54         return "EGL_BAD_CURRENT_SURFACE";
  55     case EGL_BAD_DISPLAY:
  56         return "EGL_BAD_DISPLAY";
  57     case EGL_BAD_SURFACE:
  58         return "EGL_BAD_SURFACE";
  59     case EGL_BAD_MATCH:
  60         return "EGL_BAD_MATCH";
  61     case EGL_BAD_PARAMETER:
  62         return "EGL_BAD_PARAMETER";
  63     case EGL_BAD_NATIVE_PIXMAP:
  64         return "EGL_BAD_NATIVE_PIXMAP";
  65     case EGL_BAD_NATIVE_WINDOW:
  66         return "EGL_BAD_NATIVE_WINDOW";
  67     case EGL_CONTEXT_LOST:
  68         return "EGL_CONTEXT_LOST";
  69     default:
  70         return "Unknown EGL error";
  71     }
  72 }
  73
  74 static void egl_fb_delete_texture(egl_fb *fb)
  75 {
  76     if (!fb->delete_texture) {
  77         return;
  78     }
  79
  80     glDeleteTextures(1, &fb->texture);
  81     fb->delete_texture = false;
  82 }
  83
  84 void egl_fb_destroy(egl_fb *fb)
  85 {
  86     if (!fb->framebuffer) {
  87         return;
  88     }
  89
  90     egl_fb_delete_texture(fb);
  91     glDeleteFramebuffers(1, &fb->framebuffer);
  92
  93     fb->width = 0;
  94     fb->height = 0;
  95     fb->texture = 0;
  96     fb->framebuffer = 0;
  97 }
  98
  99 void egl_fb_setup_default(egl_fb *fb, int width, int height)
 100 {
 101     fb->width = width;
 102     fb->height = height;
 103     fb->framebuffer = 0; /* default framebuffer */
 104 }
 105
 106 void egl_fb_setup_for_tex(egl_fb *fb, int width, int height,
 107                           GLuint texture, bool delete)
 108 {
 109     egl_fb_delete_texture(fb);
 110
 111     fb->width = width;
 112     fb->height = height;
 113     fb->texture = texture;
 114     fb->delete_texture = delete;
 115     if (!fb->framebuffer) {
 116         glGenFramebuffers(1, &fb->framebuffer);
 117     }
 118
 119     glBindFramebuffer(GL_FRAMEBUFFER_EXT, fb->framebuffer);
 120     glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
 121                               GL_TEXTURE_2D, fb->texture, 0);
 122 }
 123
 124 void egl_fb_setup_new_tex(egl_fb *fb, int width, int height)
 125 {
 126     GLuint texture;
 127
 128     glGenTextures(1, &texture);
 129     glBindTexture(GL_TEXTURE_2D, texture);
 130     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height,
 131                  0, GL_BGRA, GL_UNSIGNED_BYTE, 0);
 132
 133     egl_fb_setup_for_tex(fb, width, height, texture, true);
 134 }
 135
 136 void egl_fb_blit(egl_fb *dst, egl_fb *src, bool flip)
 137 {
 138     GLuint x1 = 0;
 139     GLuint y1 = 0;
 140     GLuint x2, y2;
 141     GLuint w = src->width;
 142     GLuint h = src->height;
 143
 144     glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
 145     glBindFramebuffer(GL_DRAW_FRAMEBUFFER, dst->framebuffer);
 146     glViewport(0, 0, dst->width, dst->height);
 147
 148     if (src->dmabuf) {
 149         x1 = qemu_dmabuf_get_x(src->dmabuf);
 150         y1 = qemu_dmabuf_get_y(src->dmabuf);
 151         w = qemu_dmabuf_get_width(src->dmabuf);
 152         h = qemu_dmabuf_get_height(src->dmabuf);
 153     }
 154
 155     w = (x1 + w) > src->width ? src->width - x1 : w;
 156     h = (y1 + h) > src->height ? src->height - y1 : h;
 157
 158     y2 = flip ? y1 : h + y1;
 159     y1 = flip ? h + y1 : y1;
 160     x2 = x1 + w;
 161
 162     glBlitFramebuffer(x1, y1, x2, y2,
 163                       0, 0, dst->width, dst->height,
 164                       GL_COLOR_BUFFER_BIT, GL_LINEAR);
 165 }
 166
 167 void egl_fb_read(DisplaySurface *dst, egl_fb *src)
 168 {
 169     glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
 170     glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
 171     glReadPixels(0, 0, surface_width(dst), surface_height(dst),
 172                  GL_BGRA, GL_UNSIGNED_BYTE, surface_data(dst));
 173 }
 174
 175 void egl_fb_read_rect(DisplaySurface *dst, egl_fb *src, int x, int y, int w, int h)
 176 {
 177     assert(surface_width(dst) == src->width);
 178     assert(surface_height(dst) == src->height);
 179     assert(surface_format(dst) == PIXMAN_x8r8g8b8);
 180
 181     glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
 182     glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
 183     glPixelStorei(GL_PACK_ROW_LENGTH, surface_stride(dst) / 4);
 184     glReadPixels(x, y, w, h,
 185                  GL_BGRA, GL_UNSIGNED_BYTE, surface_data(dst) + x * 4);
 186     glPixelStorei(GL_PACK_ROW_LENGTH, 0);
 187 }
 188
 189 void egl_texture_blit(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip)
 190 {
 191     glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
 192     glViewport(0, 0, dst->width, dst->height);
 193     glEnable(GL_TEXTURE_2D);
 194     glBindTexture(GL_TEXTURE_2D, src->texture);
 195     qemu_gl_run_texture_blit(gls, flip);
 196 }
 197
 198 void egl_texture_blend(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip,
 199                        int x, int y, double scale_x, double scale_y)
 200 {
 201     glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
 202     int w = scale_x * src->width;
 203     int h = scale_y * src->height;
 204     if (flip) {
 205         glViewport(x, y, w, h);
 206     } else {
 207         glViewport(x, dst->height - h - y, w, h);
 208     }
 209     glEnable(GL_TEXTURE_2D);
 210     glBindTexture(GL_TEXTURE_2D, src->texture);
 211     glEnable(GL_BLEND);
 212     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 213     qemu_gl_run_texture_blit(gls, flip);
 214     glDisable(GL_BLEND);
 215 }
 216
 217 /* ---------------------------------------------------------------------- */
 218
 219 EGLContext qemu_egl_rn_ctx;
 220
 221 #ifdef CONFIG_GBM
 222
 223 int qemu_egl_rn_fd;
 224 struct gbm_device *qemu_egl_rn_gbm_dev;
 225
 226 int egl_rendernode_init(const char *rendernode, DisplayGLMode mode)
 227 {
 228     qemu_egl_rn_fd = -1;
 229     int rc;
 230
 231     qemu_egl_rn_fd = qemu_drm_rendernode_open(rendernode);
 232     if (qemu_egl_rn_fd == -1) {
 233         error_report("egl: no drm render node available");
 234         goto err;
 235     }
 236
 237     qemu_egl_rn_gbm_dev = gbm_create_device(qemu_egl_rn_fd);
 238     if (!qemu_egl_rn_gbm_dev) {
 239         error_report("egl: gbm_create_device failed");
 240         goto err;
 241     }
 242
 243     rc = qemu_egl_init_dpy_mesa((EGLNativeDisplayType)qemu_egl_rn_gbm_dev,
 244                                 mode);
 245     if (rc != 0) {
 246         /* qemu_egl_init_dpy_mesa reports error */
 247         goto err;
 248     }
 249
 250     if (!epoxy_has_egl_extension(qemu_egl_display,
 251                                  "EGL_KHR_surfaceless_context")) {
 252         error_report("egl: EGL_KHR_surfaceless_context not supported");
 253         goto err;
 254     }
 255     if (!epoxy_has_egl_extension(qemu_egl_display,
 256                                  "EGL_MESA_image_dma_buf_export")) {
 257         error_report("egl: EGL_MESA_image_dma_buf_export not supported");
 258         goto err;
 259     }
 260
 261     qemu_egl_rn_ctx = qemu_egl_init_ctx();
 262     if (!qemu_egl_rn_ctx) {
 263         error_report("egl: egl_init_ctx failed");
 264         goto err;
 265     }
 266
 267     return 0;
 268
 269 err:
 270     if (qemu_egl_rn_gbm_dev) {
 271         gbm_device_destroy(qemu_egl_rn_gbm_dev);
 272     }
 273     if (qemu_egl_rn_fd != -1) {
 274         close(qemu_egl_rn_fd);
 275     }
 276
 277     return -1;
 278 }
 279
 280 int egl_get_fd_for_texture(uint32_t tex_id, EGLint *stride, EGLint *fourcc,
 281                            EGLuint64KHR *modifier)
 282 {
 283     EGLImageKHR image;
 284     EGLint num_planes, fd;
 285
 286     image = eglCreateImageKHR(qemu_egl_display, eglGetCurrentContext(),
 287                               EGL_GL_TEXTURE_2D_KHR,
 288                               (EGLClientBuffer)(unsigned long)tex_id,
 289                               NULL);
 290     if (!image) {
 291         return -1;
 292     }
 293
 294     eglExportDMABUFImageQueryMESA(qemu_egl_display, image, fourcc,
 295                                   &num_planes, modifier);
 296     if (num_planes != 1) {
 297         eglDestroyImageKHR(qemu_egl_display, image);
 298         return -1;
 299     }
 300     eglExportDMABUFImageMESA(qemu_egl_display, image, &fd, stride, NULL);
 301     eglDestroyImageKHR(qemu_egl_display, image);
 302
 303     return fd;
 304 }
 305
 306 void egl_dmabuf_import_texture(QemuDmaBuf *dmabuf)
 307 {
 308     EGLImageKHR image = EGL_NO_IMAGE_KHR;
 309     EGLint attrs[64];
 310     int i = 0;
 311     uint64_t modifier;
 312     uint32_t texture = qemu_dmabuf_get_texture(dmabuf);
 313
 314     if (texture != 0) {
 315         return;
 316     }
 317
 318     attrs[i++] = EGL_WIDTH;
 319     attrs[i++] = qemu_dmabuf_get_backing_width(dmabuf);
 320     attrs[i++] = EGL_HEIGHT;
 321     attrs[i++] = qemu_dmabuf_get_backing_height(dmabuf);
 322     attrs[i++] = EGL_LINUX_DRM_FOURCC_EXT;
 323     attrs[i++] = qemu_dmabuf_get_fourcc(dmabuf);
 324
 325     attrs[i++] = EGL_DMA_BUF_PLANE0_FD_EXT;
 326     attrs[i++] = qemu_dmabuf_get_fd(dmabuf);
 327     attrs[i++] = EGL_DMA_BUF_PLANE0_PITCH_EXT;
 328     attrs[i++] = qemu_dmabuf_get_stride(dmabuf);
 329     attrs[i++] = EGL_DMA_BUF_PLANE0_OFFSET_EXT;
 330     attrs[i++] = 0;
 331 #ifdef EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT
 332     modifier = qemu_dmabuf_get_modifier(dmabuf);
 333     if (modifier) {
 334         attrs[i++] = EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT;
 335         attrs[i++] = (modifier >>  0) & 0xffffffff;
 336         attrs[i++] = EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT;
 337         attrs[i++] = (modifier >> 32) & 0xffffffff;
 338     }
 339 #endif
 340     attrs[i++] = EGL_NONE;
 341
 342     image = eglCreateImageKHR(qemu_egl_display,
 343                               EGL_NO_CONTEXT,
 344                               EGL_LINUX_DMA_BUF_EXT,
 345                               NULL, attrs);
 346     if (image == EGL_NO_IMAGE_KHR) {
 347         error_report("eglCreateImageKHR failed");
 348         return;
 349     }
 350
 351     glGenTextures(1, &texture);
 352     qemu_dmabuf_set_texture(dmabuf, texture);
 353     glBindTexture(GL_TEXTURE_2D, texture);
 354     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 355     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 356
 357     glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)image);
 358     eglDestroyImageKHR(qemu_egl_display, image);
 359 }
 360
 361 void egl_dmabuf_release_texture(QemuDmaBuf *dmabuf)
 362 {
 363     uint32_t texture;
 364
 365     texture = qemu_dmabuf_get_texture(dmabuf);
 366     if (texture == 0) {
 367         return;
 368     }
 369
 370     glDeleteTextures(1, &texture);
 371     qemu_dmabuf_set_texture(dmabuf, 0);
 372 }
 373
 374 void egl_dmabuf_create_sync(QemuDmaBuf *dmabuf)
 375 {
 376     EGLSyncKHR sync;
 377
 378     if (epoxy_has_egl_extension(qemu_egl_display,
 379                                 "EGL_KHR_fence_sync") &&
 380         epoxy_has_egl_extension(qemu_egl_display,
 381                                 "EGL_ANDROID_native_fence_sync")) {
 382         sync = eglCreateSyncKHR(qemu_egl_display,
 383                                 EGL_SYNC_NATIVE_FENCE_ANDROID, NULL);
 384         if (sync != EGL_NO_SYNC_KHR) {
 385             qemu_dmabuf_set_sync(dmabuf, sync);
 386         }
 387     }
 388 }
 389
 390 void egl_dmabuf_create_fence(QemuDmaBuf *dmabuf)
 391 {
 392     void *sync = qemu_dmabuf_get_sync(dmabuf);
 393     int fence_fd;
 394
 395     if (sync) {
 396         fence_fd = eglDupNativeFenceFDANDROID(qemu_egl_display,
 397                                               sync);
 398         qemu_dmabuf_set_fence_fd(dmabuf, fence_fd);
 399         eglDestroySyncKHR(qemu_egl_display, sync);
 400         qemu_dmabuf_set_sync(dmabuf, NULL);
 401     }
 402 }
 403
 404 #endif /* CONFIG_GBM */
 405
 406 /* ---------------------------------------------------------------------- */
 407
 408 EGLSurface qemu_egl_init_surface_x11(EGLContext ectx, EGLNativeWindowType win)
 409 {
 410     EGLSurface esurface;
 411     EGLBoolean b;
 412
 413     esurface = eglCreateWindowSurface(qemu_egl_display,
 414                                       qemu_egl_config,
 415                                       win, NULL);
 416     if (esurface == EGL_NO_SURFACE) {
 417         error_report("egl: eglCreateWindowSurface failed");
 418         return NULL;
 419     }
 420
 421     b = eglMakeCurrent(qemu_egl_display, esurface, esurface, ectx);
 422     if (b == EGL_FALSE) {
 423         error_report("egl: eglMakeCurrent failed");
 424         return NULL;
 425     }
 426
 427     return esurface;
 428 }
 429
 430 /* ---------------------------------------------------------------------- */
 431
 432 #if defined(CONFIG_X11) || defined(CONFIG_GBM) || defined(WIN32)
 433
 434 /*
 435  * Taken from glamor_egl.h from the Xorg xserver, which is MIT licensed
 436  *
 437  * Create an EGLDisplay from a native display type. This is a little quirky
 438  * for a few reasons.
 439  *
 440  * 1: GetPlatformDisplayEXT and GetPlatformDisplay are the API you want to
 441  * use, but have different function signatures in the third argument; this
 442  * happens not to matter for us, at the moment, but it means epoxy won't alias
 443  * them together.
 444  *
 445  * 2: epoxy 1.3 and earlier don't understand EGL client extensions, which
 446  * means you can't call "eglGetPlatformDisplayEXT" directly, as the resolver
 447  * will crash.
 448  *
 449  * 3: You can't tell whether you have EGL 1.5 at this point, because
 450  * eglQueryString(EGL_VERSION) is a property of the display, which we don't
 451  * have yet. So you have to query for extensions no matter what. Fortunately
 452  * epoxy_has_egl_extension _does_ let you query for client extensions, so
 453  * we don't have to write our own extension string parsing.
 454  *
 455  * 4. There is no EGL_KHR_platform_base to complement the EXT one, thus one
 456  * needs to know EGL 1.5 is supported in order to use the eglGetPlatformDisplay
 457  * function pointer.
 458  * We can workaround this (circular dependency) by probing for the EGL 1.5
 459  * platform extensions (EGL_KHR_platform_gbm and friends) yet it doesn't seem
 460  * like mesa will be able to advertise these (even though it can do EGL 1.5).
 461  */
 462 static EGLDisplay qemu_egl_get_display(EGLNativeDisplayType native,
 463                                        EGLenum platform)
 464 {
 465     EGLDisplay dpy = EGL_NO_DISPLAY;
 466
 467     /* In practise any EGL 1.5 implementation would support the EXT extension */
 468     if (epoxy_has_egl_extension(NULL, "EGL_EXT_platform_base")) {
 469         if (platform != 0) {
 470             dpy = eglGetPlatformDisplayEXT(platform, native, NULL);
 471         }
 472     }
 473
 474     if (dpy == EGL_NO_DISPLAY) {
 475         /* fallback */
 476         dpy = eglGetDisplay(native);
 477     }
 478     return dpy;
 479 }
 480
 481 static int qemu_egl_init_dpy(EGLNativeDisplayType dpy,
 482                              EGLenum platform,
 483                              DisplayGLMode mode)
 484 {
 485     static const EGLint conf_att_core[] = {
 486         EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
 487         EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
 488         EGL_RED_SIZE,   5,
 489         EGL_GREEN_SIZE, 5,
 490         EGL_BLUE_SIZE,  5,
 491         EGL_ALPHA_SIZE, 0,
 492         EGL_NONE,
 493     };
 494     static const EGLint conf_att_gles[] = {
 495         EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
 496         EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
 497         EGL_RED_SIZE,   5,
 498         EGL_GREEN_SIZE, 5,
 499         EGL_BLUE_SIZE,  5,
 500         EGL_ALPHA_SIZE, 0,
 501         EGL_NONE,
 502     };
 503     EGLint major, minor;
 504     EGLBoolean b;
 505     EGLint n;
 506     bool gles = (mode == DISPLAYGL_MODE_ES);
 507
 508     qemu_egl_display = qemu_egl_get_display(dpy, platform);
 509     if (qemu_egl_display == EGL_NO_DISPLAY) {
 510         error_report("egl: eglGetDisplay failed: %s", qemu_egl_get_error_string());
 511         return -1;
 512     }
 513
 514     b = eglInitialize(qemu_egl_display, &major, &minor);
 515     if (b == EGL_FALSE) {
 516         error_report("egl: eglInitialize failed: %s", qemu_egl_get_error_string());
 517         return -1;
 518     }
 519
 520     b = eglBindAPI(gles ?  EGL_OPENGL_ES_API : EGL_OPENGL_API);
 521     if (b == EGL_FALSE) {
 522         error_report("egl: eglBindAPI failed (%s mode): %s",
 523                      gles ? "gles" : "core", qemu_egl_get_error_string());
 524         return -1;
 525     }
 526
 527     b = eglChooseConfig(qemu_egl_display,
 528                         gles ? conf_att_gles : conf_att_core,
 529                         &qemu_egl_config, 1, &n);
 530     if (b == EGL_FALSE || n != 1) {
 531         error_report("egl: eglChooseConfig failed (%s mode): %s",
 532                      gles ? "gles" : "core", qemu_egl_get_error_string());
 533         return -1;
 534     }
 535
 536     qemu_egl_mode = gles ? DISPLAYGL_MODE_ES : DISPLAYGL_MODE_CORE;
 537     return 0;
 538 }
 539
 540 #endif
 541
 542 #if defined(CONFIG_X11) || defined(CONFIG_GBM)
 543 int qemu_egl_init_dpy_x11(EGLNativeDisplayType dpy, DisplayGLMode mode)
 544 {
 545 #ifdef EGL_KHR_platform_x11
 546     return qemu_egl_init_dpy(dpy, EGL_PLATFORM_X11_KHR, mode);
 547 #else
 548     return qemu_egl_init_dpy(dpy, 0, mode);
 549 #endif
 550 }
 551
 552 int qemu_egl_init_dpy_mesa(EGLNativeDisplayType dpy, DisplayGLMode mode)
 553 {
 554 #ifdef EGL_MESA_platform_gbm
 555     return qemu_egl_init_dpy(dpy, EGL_PLATFORM_GBM_MESA, mode);
 556 #else
 557     return qemu_egl_init_dpy(dpy, 0, mode);
 558 #endif
 559 }
 560 #endif
 561
 562
 563 #ifdef WIN32
 564 int qemu_egl_init_dpy_win32(EGLNativeDisplayType dpy, DisplayGLMode mode)
 565 {
 566     /* prefer GL ES, as that's what ANGLE supports */
 567     if (mode == DISPLAYGL_MODE_ON) {
 568         mode = DISPLAYGL_MODE_ES;
 569     }
 570
 571     if (qemu_egl_init_dpy(dpy, 0, mode) < 0) {
 572         return -1;
 573     }
 574
 575 #ifdef EGL_D3D11_DEVICE_ANGLE
 576     if (epoxy_has_egl_extension(qemu_egl_display, "EGL_EXT_device_query")) {
 577         EGLDeviceEXT device;
 578         void *d3d11_device;
 579
 580         if (!eglQueryDisplayAttribEXT(qemu_egl_display,
 581                                       EGL_DEVICE_EXT,
 582                                       (EGLAttrib *)&device)) {
 583             return 0;
 584         }
 585
 586         if (!eglQueryDeviceAttribEXT(device,
 587                                      EGL_D3D11_DEVICE_ANGLE,
 588                                      (EGLAttrib *)&d3d11_device)) {
 589             return 0;
 590         }
 591
 592         trace_egl_init_d3d11_device(device);
 593         qemu_egl_angle_d3d = device != NULL;
 594     }
 595 #endif
 596
 597     return 0;
 598 }
 599 #endif
 600
 601 bool qemu_egl_has_dmabuf(void)
 602 {
 603     if (qemu_egl_display == EGL_NO_DISPLAY) {
 604         return false;
 605     }
 606
 607     return epoxy_has_egl_extension(qemu_egl_display,
 608                                    "EGL_EXT_image_dma_buf_import");
 609 }
 610
 611 EGLContext qemu_egl_init_ctx(void)
 612 {
 613     static const EGLint ctx_att_core[] = {
 614         EGL_CONTEXT_OPENGL_PROFILE_MASK, EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT,
 615         EGL_NONE
 616     };
 617     static const EGLint ctx_att_gles[] = {
 618         EGL_CONTEXT_CLIENT_VERSION, 2,
 619         EGL_NONE
 620     };
 621     bool gles = (qemu_egl_mode == DISPLAYGL_MODE_ES);
 622     EGLContext ectx;
 623     EGLBoolean b;
 624
 625     ectx = eglCreateContext(qemu_egl_display, qemu_egl_config, EGL_NO_CONTEXT,
 626                             gles ? ctx_att_gles : ctx_att_core);
 627     if (ectx == EGL_NO_CONTEXT) {
 628         error_report("egl: eglCreateContext failed");
 629         return NULL;
 630     }
 631
 632     b = eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, ectx);
 633     if (b == EGL_FALSE) {
 634         error_report("egl: eglMakeCurrent failed");
 635         return NULL;
 636     }
 637
 638     return ectx;
 639 }
 640
 641 bool egl_init(const char *rendernode, DisplayGLMode mode, Error **errp)
 642 {
 643     ERRP_GUARD();
 644
 645     if (mode == DISPLAYGL_MODE_OFF) {
 646         error_setg(errp, "egl: turning off GL doesn't make sense");
 647         return false;
 648     }
 649
 650 #ifdef WIN32
 651     if (qemu_egl_init_dpy_win32(EGL_DEFAULT_DISPLAY, mode) < 0) {
 652         error_setg(errp, "egl: init failed");
 653         return false;
 654     }
 655     qemu_egl_rn_ctx = qemu_egl_init_ctx();
 656     if (!qemu_egl_rn_ctx) {
 657         error_setg(errp, "egl: egl_init_ctx failed");
 658         return false;
 659     }
 660 #elif defined(CONFIG_GBM)
 661     if (egl_rendernode_init(rendernode, mode) < 0) {
 662         error_setg(errp, "egl: render node init failed");
 663         return false;
 664     }
 665 #endif
 666
 667     if (!qemu_egl_rn_ctx) {
 668         error_setg(errp, "egl: not available on this platform");
 669         return false;
 670     }
 671
 672     display_opengl = 1;
 673     return true;
 674 }