egl-helpers.c (15455B)
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 23EGLDisplay *qemu_egl_display; 24EGLConfig qemu_egl_config; 25DisplayGLMode qemu_egl_mode; 26 27/* ------------------------------------------------------------------ */ 28 29static void egl_fb_delete_texture(egl_fb *fb) 30{ 31 if (!fb->delete_texture) { 32 return; 33 } 34 35 glDeleteTextures(1, &fb->texture); 36 fb->delete_texture = false; 37} 38 39void egl_fb_destroy(egl_fb *fb) 40{ 41 if (!fb->framebuffer) { 42 return; 43 } 44 45 egl_fb_delete_texture(fb); 46 glDeleteFramebuffers(1, &fb->framebuffer); 47 48 fb->width = 0; 49 fb->height = 0; 50 fb->texture = 0; 51 fb->framebuffer = 0; 52} 53 54void egl_fb_setup_default(egl_fb *fb, int width, int height) 55{ 56 fb->width = width; 57 fb->height = height; 58 fb->framebuffer = 0; /* default framebuffer */ 59} 60 61void egl_fb_setup_for_tex(egl_fb *fb, int width, int height, 62 GLuint texture, bool delete) 63{ 64 egl_fb_delete_texture(fb); 65 66 fb->width = width; 67 fb->height = height; 68 fb->texture = texture; 69 fb->delete_texture = delete; 70 if (!fb->framebuffer) { 71 glGenFramebuffers(1, &fb->framebuffer); 72 } 73 74 glBindFramebuffer(GL_FRAMEBUFFER_EXT, fb->framebuffer); 75 glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, 76 GL_TEXTURE_2D, fb->texture, 0); 77} 78 79void egl_fb_setup_new_tex(egl_fb *fb, int width, int height) 80{ 81 GLuint texture; 82 83 glGenTextures(1, &texture); 84 glBindTexture(GL_TEXTURE_2D, texture); 85 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 86 0, GL_BGRA, GL_UNSIGNED_BYTE, 0); 87 88 egl_fb_setup_for_tex(fb, width, height, texture, true); 89} 90 91void egl_fb_blit(egl_fb *dst, egl_fb *src, bool flip) 92{ 93 GLuint y1, y2; 94 95 glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer); 96 glBindFramebuffer(GL_DRAW_FRAMEBUFFER, dst->framebuffer); 97 glViewport(0, 0, dst->width, dst->height); 98 y1 = flip ? src->height : 0; 99 y2 = flip ? 0 : src->height; 100 glBlitFramebuffer(0, y1, src->width, y2, 101 0, 0, dst->width, dst->height, 102 GL_COLOR_BUFFER_BIT, GL_LINEAR); 103} 104 105void egl_fb_read(DisplaySurface *dst, egl_fb *src) 106{ 107 glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer); 108 glReadBuffer(GL_COLOR_ATTACHMENT0_EXT); 109 glReadPixels(0, 0, surface_width(dst), surface_height(dst), 110 GL_BGRA, GL_UNSIGNED_BYTE, surface_data(dst)); 111} 112 113void egl_texture_blit(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip) 114{ 115 glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer); 116 glViewport(0, 0, dst->width, dst->height); 117 glEnable(GL_TEXTURE_2D); 118 glBindTexture(GL_TEXTURE_2D, src->texture); 119 qemu_gl_run_texture_blit(gls, flip); 120} 121 122void egl_texture_blend(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip, 123 int x, int y, double scale_x, double scale_y) 124{ 125 glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer); 126 int w = scale_x * src->width; 127 int h = scale_y * src->height; 128 if (flip) { 129 glViewport(x, y, w, h); 130 } else { 131 glViewport(x, dst->height - h - y, w, h); 132 } 133 glEnable(GL_TEXTURE_2D); 134 glBindTexture(GL_TEXTURE_2D, src->texture); 135 glEnable(GL_BLEND); 136 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); 137 qemu_gl_run_texture_blit(gls, flip); 138 glDisable(GL_BLEND); 139} 140 141/* ---------------------------------------------------------------------- */ 142 143#ifdef CONFIG_GBM 144 145int qemu_egl_rn_fd; 146struct gbm_device *qemu_egl_rn_gbm_dev; 147EGLContext qemu_egl_rn_ctx; 148 149int egl_rendernode_init(const char *rendernode, DisplayGLMode mode) 150{ 151 qemu_egl_rn_fd = -1; 152 int rc; 153 154 qemu_egl_rn_fd = qemu_drm_rendernode_open(rendernode); 155 if (qemu_egl_rn_fd == -1) { 156 error_report("egl: no drm render node available"); 157 goto err; 158 } 159 160 qemu_egl_rn_gbm_dev = gbm_create_device(qemu_egl_rn_fd); 161 if (!qemu_egl_rn_gbm_dev) { 162 error_report("egl: gbm_create_device failed"); 163 goto err; 164 } 165 166 rc = qemu_egl_init_dpy_mesa((EGLNativeDisplayType)qemu_egl_rn_gbm_dev, 167 mode); 168 if (rc != 0) { 169 /* qemu_egl_init_dpy_mesa reports error */ 170 goto err; 171 } 172 173 if (!epoxy_has_egl_extension(qemu_egl_display, 174 "EGL_KHR_surfaceless_context")) { 175 error_report("egl: EGL_KHR_surfaceless_context not supported"); 176 goto err; 177 } 178 if (!epoxy_has_egl_extension(qemu_egl_display, 179 "EGL_MESA_image_dma_buf_export")) { 180 error_report("egl: EGL_MESA_image_dma_buf_export not supported"); 181 goto err; 182 } 183 184 qemu_egl_rn_ctx = qemu_egl_init_ctx(); 185 if (!qemu_egl_rn_ctx) { 186 error_report("egl: egl_init_ctx failed"); 187 goto err; 188 } 189 190 return 0; 191 192err: 193 if (qemu_egl_rn_gbm_dev) { 194 gbm_device_destroy(qemu_egl_rn_gbm_dev); 195 } 196 if (qemu_egl_rn_fd != -1) { 197 close(qemu_egl_rn_fd); 198 } 199 200 return -1; 201} 202 203int egl_get_fd_for_texture(uint32_t tex_id, EGLint *stride, EGLint *fourcc, 204 EGLuint64KHR *modifier) 205{ 206 EGLImageKHR image; 207 EGLint num_planes, fd; 208 209 image = eglCreateImageKHR(qemu_egl_display, eglGetCurrentContext(), 210 EGL_GL_TEXTURE_2D_KHR, 211 (EGLClientBuffer)(unsigned long)tex_id, 212 NULL); 213 if (!image) { 214 return -1; 215 } 216 217 eglExportDMABUFImageQueryMESA(qemu_egl_display, image, fourcc, 218 &num_planes, modifier); 219 if (num_planes != 1) { 220 eglDestroyImageKHR(qemu_egl_display, image); 221 return -1; 222 } 223 eglExportDMABUFImageMESA(qemu_egl_display, image, &fd, stride, NULL); 224 eglDestroyImageKHR(qemu_egl_display, image); 225 226 return fd; 227} 228 229void egl_dmabuf_import_texture(QemuDmaBuf *dmabuf) 230{ 231 EGLImageKHR image = EGL_NO_IMAGE_KHR; 232 EGLint attrs[64]; 233 int i = 0; 234 235 if (dmabuf->texture != 0) { 236 return; 237 } 238 239 attrs[i++] = EGL_WIDTH; 240 attrs[i++] = dmabuf->width; 241 attrs[i++] = EGL_HEIGHT; 242 attrs[i++] = dmabuf->height; 243 attrs[i++] = EGL_LINUX_DRM_FOURCC_EXT; 244 attrs[i++] = dmabuf->fourcc; 245 246 attrs[i++] = EGL_DMA_BUF_PLANE0_FD_EXT; 247 attrs[i++] = dmabuf->fd; 248 attrs[i++] = EGL_DMA_BUF_PLANE0_PITCH_EXT; 249 attrs[i++] = dmabuf->stride; 250 attrs[i++] = EGL_DMA_BUF_PLANE0_OFFSET_EXT; 251 attrs[i++] = 0; 252#ifdef EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT 253 if (dmabuf->modifier) { 254 attrs[i++] = EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT; 255 attrs[i++] = (dmabuf->modifier >> 0) & 0xffffffff; 256 attrs[i++] = EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT; 257 attrs[i++] = (dmabuf->modifier >> 32) & 0xffffffff; 258 } 259#endif 260 attrs[i++] = EGL_NONE; 261 262 image = eglCreateImageKHR(qemu_egl_display, 263 EGL_NO_CONTEXT, 264 EGL_LINUX_DMA_BUF_EXT, 265 NULL, attrs); 266 if (image == EGL_NO_IMAGE_KHR) { 267 error_report("eglCreateImageKHR failed"); 268 return; 269 } 270 271 glGenTextures(1, &dmabuf->texture); 272 glBindTexture(GL_TEXTURE_2D, dmabuf->texture); 273 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 274 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 275 276 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)image); 277 eglDestroyImageKHR(qemu_egl_display, image); 278} 279 280void egl_dmabuf_release_texture(QemuDmaBuf *dmabuf) 281{ 282 if (dmabuf->texture == 0) { 283 return; 284 } 285 286 glDeleteTextures(1, &dmabuf->texture); 287 dmabuf->texture = 0; 288} 289 290void egl_dmabuf_create_sync(QemuDmaBuf *dmabuf) 291{ 292 EGLSyncKHR sync; 293 294 if (epoxy_has_egl_extension(qemu_egl_display, 295 "EGL_KHR_fence_sync") && 296 epoxy_has_egl_extension(qemu_egl_display, 297 "EGL_ANDROID_native_fence_sync")) { 298 sync = eglCreateSyncKHR(qemu_egl_display, 299 EGL_SYNC_NATIVE_FENCE_ANDROID, NULL); 300 if (sync != EGL_NO_SYNC_KHR) { 301 dmabuf->sync = sync; 302 } 303 } 304} 305 306void egl_dmabuf_create_fence(QemuDmaBuf *dmabuf) 307{ 308 if (dmabuf->sync) { 309 dmabuf->fence_fd = eglDupNativeFenceFDANDROID(qemu_egl_display, 310 dmabuf->sync); 311 eglDestroySyncKHR(qemu_egl_display, dmabuf->sync); 312 dmabuf->sync = NULL; 313 } 314} 315 316#endif /* CONFIG_GBM */ 317 318/* ---------------------------------------------------------------------- */ 319 320EGLSurface qemu_egl_init_surface_x11(EGLContext ectx, EGLNativeWindowType win) 321{ 322 EGLSurface esurface; 323 EGLBoolean b; 324 325 esurface = eglCreateWindowSurface(qemu_egl_display, 326 qemu_egl_config, 327 win, NULL); 328 if (esurface == EGL_NO_SURFACE) { 329 error_report("egl: eglCreateWindowSurface failed"); 330 return NULL; 331 } 332 333 b = eglMakeCurrent(qemu_egl_display, esurface, esurface, ectx); 334 if (b == EGL_FALSE) { 335 error_report("egl: eglMakeCurrent failed"); 336 return NULL; 337 } 338 339 return esurface; 340} 341 342/* ---------------------------------------------------------------------- */ 343 344#if defined(CONFIG_X11) || defined(CONFIG_GBM) 345 346/* 347 * Taken from glamor_egl.h from the Xorg xserver, which is MIT licensed 348 * 349 * Create an EGLDisplay from a native display type. This is a little quirky 350 * for a few reasons. 351 * 352 * 1: GetPlatformDisplayEXT and GetPlatformDisplay are the API you want to 353 * use, but have different function signatures in the third argument; this 354 * happens not to matter for us, at the moment, but it means epoxy won't alias 355 * them together. 356 * 357 * 2: epoxy 1.3 and earlier don't understand EGL client extensions, which 358 * means you can't call "eglGetPlatformDisplayEXT" directly, as the resolver 359 * will crash. 360 * 361 * 3: You can't tell whether you have EGL 1.5 at this point, because 362 * eglQueryString(EGL_VERSION) is a property of the display, which we don't 363 * have yet. So you have to query for extensions no matter what. Fortunately 364 * epoxy_has_egl_extension _does_ let you query for client extensions, so 365 * we don't have to write our own extension string parsing. 366 * 367 * 4. There is no EGL_KHR_platform_base to complement the EXT one, thus one 368 * needs to know EGL 1.5 is supported in order to use the eglGetPlatformDisplay 369 * function pointer. 370 * We can workaround this (circular dependency) by probing for the EGL 1.5 371 * platform extensions (EGL_KHR_platform_gbm and friends) yet it doesn't seem 372 * like mesa will be able to advertise these (even though it can do EGL 1.5). 373 */ 374static EGLDisplay qemu_egl_get_display(EGLNativeDisplayType native, 375 EGLenum platform) 376{ 377 EGLDisplay dpy = EGL_NO_DISPLAY; 378 379 /* In practise any EGL 1.5 implementation would support the EXT extension */ 380 if (epoxy_has_egl_extension(NULL, "EGL_EXT_platform_base")) { 381 PFNEGLGETPLATFORMDISPLAYEXTPROC getPlatformDisplayEXT = 382 (void *) eglGetProcAddress("eglGetPlatformDisplayEXT"); 383 if (getPlatformDisplayEXT && platform != 0) { 384 dpy = getPlatformDisplayEXT(platform, native, NULL); 385 } 386 } 387 388 if (dpy == EGL_NO_DISPLAY) { 389 /* fallback */ 390 dpy = eglGetDisplay(native); 391 } 392 return dpy; 393} 394 395static int qemu_egl_init_dpy(EGLNativeDisplayType dpy, 396 EGLenum platform, 397 DisplayGLMode mode) 398{ 399 static const EGLint conf_att_core[] = { 400 EGL_SURFACE_TYPE, EGL_WINDOW_BIT, 401 EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT, 402 EGL_RED_SIZE, 5, 403 EGL_GREEN_SIZE, 5, 404 EGL_BLUE_SIZE, 5, 405 EGL_ALPHA_SIZE, 0, 406 EGL_NONE, 407 }; 408 static const EGLint conf_att_gles[] = { 409 EGL_SURFACE_TYPE, EGL_WINDOW_BIT, 410 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, 411 EGL_RED_SIZE, 5, 412 EGL_GREEN_SIZE, 5, 413 EGL_BLUE_SIZE, 5, 414 EGL_ALPHA_SIZE, 0, 415 EGL_NONE, 416 }; 417 EGLint major, minor; 418 EGLBoolean b; 419 EGLint n; 420 bool gles = (mode == DISPLAYGL_MODE_ES); 421 422 qemu_egl_display = qemu_egl_get_display(dpy, platform); 423 if (qemu_egl_display == EGL_NO_DISPLAY) { 424 error_report("egl: eglGetDisplay failed"); 425 return -1; 426 } 427 428 b = eglInitialize(qemu_egl_display, &major, &minor); 429 if (b == EGL_FALSE) { 430 error_report("egl: eglInitialize failed"); 431 return -1; 432 } 433 434 b = eglBindAPI(gles ? EGL_OPENGL_ES_API : EGL_OPENGL_API); 435 if (b == EGL_FALSE) { 436 error_report("egl: eglBindAPI failed (%s mode)", 437 gles ? "gles" : "core"); 438 return -1; 439 } 440 441 b = eglChooseConfig(qemu_egl_display, 442 gles ? conf_att_gles : conf_att_core, 443 &qemu_egl_config, 1, &n); 444 if (b == EGL_FALSE || n != 1) { 445 error_report("egl: eglChooseConfig failed (%s mode)", 446 gles ? "gles" : "core"); 447 return -1; 448 } 449 450 qemu_egl_mode = gles ? DISPLAYGL_MODE_ES : DISPLAYGL_MODE_CORE; 451 return 0; 452} 453 454int qemu_egl_init_dpy_x11(EGLNativeDisplayType dpy, DisplayGLMode mode) 455{ 456#ifdef EGL_KHR_platform_x11 457 return qemu_egl_init_dpy(dpy, EGL_PLATFORM_X11_KHR, mode); 458#else 459 return qemu_egl_init_dpy(dpy, 0, mode); 460#endif 461} 462 463int qemu_egl_init_dpy_mesa(EGLNativeDisplayType dpy, DisplayGLMode mode) 464{ 465#ifdef EGL_MESA_platform_gbm 466 return qemu_egl_init_dpy(dpy, EGL_PLATFORM_GBM_MESA, mode); 467#else 468 return qemu_egl_init_dpy(dpy, 0, mode); 469#endif 470} 471 472#endif 473 474bool qemu_egl_has_dmabuf(void) 475{ 476 if (qemu_egl_display == EGL_NO_DISPLAY) { 477 return false; 478 } 479 480 return epoxy_has_egl_extension(qemu_egl_display, 481 "EGL_EXT_image_dma_buf_import"); 482} 483 484EGLContext qemu_egl_init_ctx(void) 485{ 486 static const EGLint ctx_att_core[] = { 487 EGL_CONTEXT_OPENGL_PROFILE_MASK, EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT, 488 EGL_NONE 489 }; 490 static const EGLint ctx_att_gles[] = { 491 EGL_CONTEXT_CLIENT_VERSION, 2, 492 EGL_NONE 493 }; 494 bool gles = (qemu_egl_mode == DISPLAYGL_MODE_ES); 495 EGLContext ectx; 496 EGLBoolean b; 497 498 ectx = eglCreateContext(qemu_egl_display, qemu_egl_config, EGL_NO_CONTEXT, 499 gles ? ctx_att_gles : ctx_att_core); 500 if (ectx == EGL_NO_CONTEXT) { 501 error_report("egl: eglCreateContext failed"); 502 return NULL; 503 } 504 505 b = eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, ectx); 506 if (b == EGL_FALSE) { 507 error_report("egl: eglMakeCurrent failed"); 508 return NULL; 509 } 510 511 return ectx; 512}