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 <glob.h> 19 #include <dirent.h> 20 21 #include "qemu/error-report.h" 22 #include "ui/egl-helpers.h" 23 24 EGLDisplay *qemu_egl_display; 25 EGLConfig qemu_egl_config; 26 27 /* ---------------------------------------------------------------------- */ 28 29 static bool egl_gles; 30 static int egl_debug; 31 32 #define egl_dbg(_x ...) \ 33 do { \ 34 if (egl_debug) { \ 35 fprintf(stderr, "egl: " _x); \ 36 } \ 37 } while (0); 38 39 /* ---------------------------------------------------------------------- */ 40 41 #ifdef CONFIG_OPENGL_DMABUF 42 43 int qemu_egl_rn_fd; 44 struct gbm_device *qemu_egl_rn_gbm_dev; 45 EGLContext qemu_egl_rn_ctx; 46 47 static int qemu_egl_rendernode_open(const char *rendernode) 48 { 49 DIR *dir; 50 struct dirent *e; 51 int r, fd; 52 char *p; 53 54 if (rendernode) { 55 return open(rendernode, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK); 56 } 57 58 dir = opendir("/dev/dri"); 59 if (!dir) { 60 return -1; 61 } 62 63 fd = -1; 64 while ((e = readdir(dir))) { 65 if (e->d_type != DT_CHR) { 66 continue; 67 } 68 69 if (strncmp(e->d_name, "renderD", 7)) { 70 continue; 71 } 72 73 p = g_strdup_printf("/dev/dri/%s", e->d_name); 74 75 r = open(p, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK); 76 if (r < 0) { 77 g_free(p); 78 continue; 79 } 80 fd = r; 81 g_free(p); 82 break; 83 } 84 85 closedir(dir); 86 if (fd < 0) { 87 return -1; 88 } 89 return fd; 90 } 91 92 int egl_rendernode_init(const char *rendernode) 93 { 94 qemu_egl_rn_fd = -1; 95 96 qemu_egl_rn_fd = qemu_egl_rendernode_open(rendernode); 97 if (qemu_egl_rn_fd == -1) { 98 error_report("egl: no drm render node available"); 99 goto err; 100 } 101 102 qemu_egl_rn_gbm_dev = gbm_create_device(qemu_egl_rn_fd); 103 if (!qemu_egl_rn_gbm_dev) { 104 error_report("egl: gbm_create_device failed"); 105 goto err; 106 } 107 108 qemu_egl_init_dpy((EGLNativeDisplayType)qemu_egl_rn_gbm_dev, false, false); 109 110 if (!epoxy_has_egl_extension(qemu_egl_display, 111 "EGL_KHR_surfaceless_context")) { 112 error_report("egl: EGL_KHR_surfaceless_context not supported"); 113 goto err; 114 } 115 if (!epoxy_has_egl_extension(qemu_egl_display, 116 "EGL_MESA_image_dma_buf_export")) { 117 error_report("egl: EGL_MESA_image_dma_buf_export not supported"); 118 goto err; 119 } 120 121 qemu_egl_rn_ctx = qemu_egl_init_ctx(); 122 if (!qemu_egl_rn_ctx) { 123 error_report("egl: egl_init_ctx failed"); 124 goto err; 125 } 126 127 return 0; 128 129 err: 130 if (qemu_egl_rn_gbm_dev) { 131 gbm_device_destroy(qemu_egl_rn_gbm_dev); 132 } 133 if (qemu_egl_rn_fd != -1) { 134 close(qemu_egl_rn_fd); 135 } 136 137 return -1; 138 } 139 140 int egl_get_fd_for_texture(uint32_t tex_id, EGLint *stride, EGLint *fourcc) 141 { 142 EGLImageKHR image; 143 EGLint num_planes, fd; 144 145 image = eglCreateImageKHR(qemu_egl_display, eglGetCurrentContext(), 146 EGL_GL_TEXTURE_2D_KHR, 147 (EGLClientBuffer)(unsigned long)tex_id, 148 NULL); 149 if (!image) { 150 return -1; 151 } 152 153 eglExportDMABUFImageQueryMESA(qemu_egl_display, image, fourcc, 154 &num_planes, NULL); 155 if (num_planes != 1) { 156 eglDestroyImageKHR(qemu_egl_display, image); 157 return -1; 158 } 159 eglExportDMABUFImageMESA(qemu_egl_display, image, &fd, stride, NULL); 160 eglDestroyImageKHR(qemu_egl_display, image); 161 162 return fd; 163 } 164 165 #endif /* CONFIG_OPENGL_DMABUF */ 166 167 /* ---------------------------------------------------------------------- */ 168 169 EGLSurface qemu_egl_init_surface_x11(EGLContext ectx, Window win) 170 { 171 EGLSurface esurface; 172 EGLBoolean b; 173 174 egl_dbg("eglCreateWindowSurface (x11 win id 0x%lx) ...\n", 175 (unsigned long) win); 176 esurface = eglCreateWindowSurface(qemu_egl_display, 177 qemu_egl_config, 178 (EGLNativeWindowType)win, NULL); 179 if (esurface == EGL_NO_SURFACE) { 180 error_report("egl: eglCreateWindowSurface failed"); 181 return NULL; 182 } 183 184 b = eglMakeCurrent(qemu_egl_display, esurface, esurface, ectx); 185 if (b == EGL_FALSE) { 186 error_report("egl: eglMakeCurrent failed"); 187 return NULL; 188 } 189 190 return esurface; 191 } 192 193 /* ---------------------------------------------------------------------- */ 194 195 int qemu_egl_init_dpy(EGLNativeDisplayType dpy, bool gles, bool debug) 196 { 197 static const EGLint conf_att_gl[] = { 198 EGL_SURFACE_TYPE, EGL_WINDOW_BIT, 199 EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT, 200 EGL_RED_SIZE, 5, 201 EGL_GREEN_SIZE, 5, 202 EGL_BLUE_SIZE, 5, 203 EGL_ALPHA_SIZE, 0, 204 EGL_NONE, 205 }; 206 static const EGLint conf_att_gles[] = { 207 EGL_SURFACE_TYPE, EGL_WINDOW_BIT, 208 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, 209 EGL_RED_SIZE, 5, 210 EGL_GREEN_SIZE, 5, 211 EGL_BLUE_SIZE, 5, 212 EGL_ALPHA_SIZE, 0, 213 EGL_NONE, 214 }; 215 EGLint major, minor; 216 EGLBoolean b; 217 EGLint n; 218 219 if (debug) { 220 egl_debug = 1; 221 setenv("EGL_LOG_LEVEL", "debug", true); 222 setenv("LIBGL_DEBUG", "verbose", true); 223 } 224 225 egl_dbg("eglGetDisplay (dpy %p) ...\n", dpy); 226 #ifdef EGL_MESA_platform_gbm 227 qemu_egl_display = eglGetPlatformDisplayEXT(EGL_PLATFORM_GBM_MESA, dpy, NULL); 228 #else 229 qemu_egl_display = eglGetDisplay(dpy); 230 #endif 231 if (qemu_egl_display == EGL_NO_DISPLAY) { 232 error_report("egl: eglGetDisplay failed"); 233 return -1; 234 } 235 236 egl_dbg("eglInitialize ...\n"); 237 b = eglInitialize(qemu_egl_display, &major, &minor); 238 if (b == EGL_FALSE) { 239 error_report("egl: eglInitialize failed"); 240 return -1; 241 } 242 243 egl_dbg("eglBindAPI ...\n"); 244 b = eglBindAPI(gles ? EGL_OPENGL_ES_API : EGL_OPENGL_API); 245 if (b == EGL_FALSE) { 246 error_report("egl: eglBindAPI failed"); 247 return -1; 248 } 249 250 egl_dbg("eglChooseConfig ...\n"); 251 b = eglChooseConfig(qemu_egl_display, 252 gles ? conf_att_gles : conf_att_gl, 253 &qemu_egl_config, 1, &n); 254 if (b == EGL_FALSE || n != 1) { 255 error_report("egl: eglChooseConfig failed"); 256 return -1; 257 } 258 259 egl_gles = gles; 260 return 0; 261 } 262 263 EGLContext qemu_egl_init_ctx(void) 264 { 265 static const EGLint ctx_att_gl[] = { 266 EGL_NONE 267 }; 268 static const EGLint ctx_att_gles[] = { 269 EGL_CONTEXT_CLIENT_VERSION, 2, 270 EGL_NONE 271 }; 272 273 EGLContext ectx; 274 EGLBoolean b; 275 276 egl_dbg("eglCreateContext ...\n"); 277 ectx = eglCreateContext(qemu_egl_display, qemu_egl_config, EGL_NO_CONTEXT, 278 egl_gles ? ctx_att_gles : ctx_att_gl); 279 if (ectx == EGL_NO_CONTEXT) { 280 error_report("egl: eglCreateContext failed"); 281 return NULL; 282 } 283 284 b = eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, ectx); 285 if (b == EGL_FALSE) { 286 error_report("egl: eglMakeCurrent failed"); 287 return NULL; 288 } 289 290 return ectx; 291 } 292