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