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