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