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6250dff3 FZ |
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 | */ | |
e16f4c87 | 17 | #include "qemu/osdep.h" |
7ced9e9f | 18 | #include <glob.h> |
1e316598 | 19 | #include <dirent.h> |
7ced9e9f | 20 | |
38a55bdd | 21 | #include "qemu/error-report.h" |
7ced9e9f GH |
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 | ||
1e316598 GH |
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 | ||
f454f49c | 69 | p = g_strdup_printf("/dev/dri/%s", e->d_name); |
1e316598 GH |
70 | |
71 | r = open(p, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK); | |
72 | if (r < 0) { | |
f454f49c | 73 | g_free(p); |
1e316598 GH |
74 | continue; |
75 | } | |
76 | fd = r; | |
f454f49c | 77 | g_free(p); |
1e316598 GH |
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) { | |
38a55bdd | 94 | error_report("egl: no drm render node available"); |
1e316598 GH |
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) { | |
38a55bdd | 100 | error_report("egl: gbm_create_device failed"); |
1e316598 GH |
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")) { | |
38a55bdd | 108 | error_report("egl: EGL_KHR_surfaceless_context not supported"); |
1e316598 GH |
109 | goto err; |
110 | } | |
111 | if (!epoxy_has_egl_extension(qemu_egl_display, | |
112 | "EGL_MESA_image_dma_buf_export")) { | |
38a55bdd | 113 | error_report("egl: EGL_MESA_image_dma_buf_export not supported"); |
1e316598 GH |
114 | goto err; |
115 | } | |
116 | ||
117 | qemu_egl_rn_ctx = qemu_egl_init_ctx(); | |
118 | if (!qemu_egl_rn_ctx) { | |
38a55bdd | 119 | error_report("egl: egl_init_ctx failed"); |
1e316598 GH |
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 | ||
7ced9e9f GH |
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) { | |
38a55bdd | 176 | error_report("egl: eglCreateWindowSurface failed"); |
7ced9e9f GH |
177 | return NULL; |
178 | } | |
179 | ||
180 | b = eglMakeCurrent(qemu_egl_display, esurface, esurface, ectx); | |
181 | if (b == EGL_FALSE) { | |
38a55bdd | 182 | error_report("egl: eglMakeCurrent failed"); |
7ced9e9f GH |
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) { | |
38a55bdd | 224 | error_report("egl: eglGetDisplay failed"); |
7ced9e9f GH |
225 | return -1; |
226 | } | |
227 | ||
228 | egl_dbg("eglInitialize ...\n"); | |
229 | b = eglInitialize(qemu_egl_display, &major, &minor); | |
230 | if (b == EGL_FALSE) { | |
38a55bdd | 231 | error_report("egl: eglInitialize failed"); |
7ced9e9f GH |
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) { | |
38a55bdd | 238 | error_report("egl: eglBindAPI failed"); |
7ced9e9f GH |
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) { | |
38a55bdd | 247 | error_report("egl: eglChooseConfig failed"); |
7ced9e9f GH |
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) { | |
38a55bdd | 272 | error_report("egl: eglCreateContext failed"); |
7ced9e9f GH |
273 | return NULL; |
274 | } | |
275 | ||
276 | b = eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, ectx); | |
277 | if (b == EGL_FALSE) { | |
38a55bdd | 278 | error_report("egl: eglMakeCurrent failed"); |
7ced9e9f GH |
279 | return NULL; |
280 | } | |
281 | ||
282 | return ectx; | |
283 | } |