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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 | ||
7b525508 | 47 | static int qemu_egl_rendernode_open(const char *rendernode) |
1e316598 GH |
48 | { |
49 | DIR *dir; | |
50 | struct dirent *e; | |
51 | int r, fd; | |
52 | char *p; | |
53 | ||
7b525508 MAL |
54 | if (rendernode) { |
55 | return open(rendernode, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK); | |
56 | } | |
57 | ||
1e316598 GH |
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 | ||
f454f49c | 73 | p = g_strdup_printf("/dev/dri/%s", e->d_name); |
1e316598 GH |
74 | |
75 | r = open(p, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK); | |
76 | if (r < 0) { | |
f454f49c | 77 | g_free(p); |
1e316598 GH |
78 | continue; |
79 | } | |
80 | fd = r; | |
f454f49c | 81 | g_free(p); |
1e316598 GH |
82 | break; |
83 | } | |
84 | ||
85 | closedir(dir); | |
86 | if (fd < 0) { | |
87 | return -1; | |
88 | } | |
89 | return fd; | |
90 | } | |
91 | ||
7b525508 | 92 | int egl_rendernode_init(const char *rendernode) |
1e316598 GH |
93 | { |
94 | qemu_egl_rn_fd = -1; | |
95 | ||
7b525508 | 96 | qemu_egl_rn_fd = qemu_egl_rendernode_open(rendernode); |
1e316598 | 97 | if (qemu_egl_rn_fd == -1) { |
38a55bdd | 98 | error_report("egl: no drm render node available"); |
1e316598 GH |
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) { | |
38a55bdd | 104 | error_report("egl: gbm_create_device failed"); |
1e316598 GH |
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")) { | |
38a55bdd | 112 | error_report("egl: EGL_KHR_surfaceless_context not supported"); |
1e316598 GH |
113 | goto err; |
114 | } | |
115 | if (!epoxy_has_egl_extension(qemu_egl_display, | |
116 | "EGL_MESA_image_dma_buf_export")) { | |
38a55bdd | 117 | error_report("egl: EGL_MESA_image_dma_buf_export not supported"); |
1e316598 GH |
118 | goto err; |
119 | } | |
120 | ||
121 | qemu_egl_rn_ctx = qemu_egl_init_ctx(); | |
122 | if (!qemu_egl_rn_ctx) { | |
38a55bdd | 123 | error_report("egl: egl_init_ctx failed"); |
1e316598 GH |
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 | ||
7ced9e9f GH |
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) { | |
38a55bdd | 180 | error_report("egl: eglCreateWindowSurface failed"); |
7ced9e9f GH |
181 | return NULL; |
182 | } | |
183 | ||
184 | b = eglMakeCurrent(qemu_egl_display, esurface, esurface, ectx); | |
185 | if (b == EGL_FALSE) { | |
38a55bdd | 186 | error_report("egl: eglMakeCurrent failed"); |
7ced9e9f GH |
187 | return NULL; |
188 | } | |
189 | ||
190 | return esurface; | |
191 | } | |
192 | ||
193 | /* ---------------------------------------------------------------------- */ | |
194 | ||
8bce03e3 GH |
195 | /* |
196 | * Taken from glamor_egl.h from the Xorg xserver, which is MIT licensed | |
197 | * | |
198 | * Create an EGLDisplay from a native display type. This is a little quirky | |
199 | * for a few reasons. | |
200 | * | |
201 | * 1: GetPlatformDisplayEXT and GetPlatformDisplay are the API you want to | |
202 | * use, but have different function signatures in the third argument; this | |
203 | * happens not to matter for us, at the moment, but it means epoxy won't alias | |
204 | * them together. | |
205 | * | |
206 | * 2: epoxy 1.3 and earlier don't understand EGL client extensions, which | |
207 | * means you can't call "eglGetPlatformDisplayEXT" directly, as the resolver | |
208 | * will crash. | |
209 | * | |
210 | * 3: You can't tell whether you have EGL 1.5 at this point, because | |
211 | * eglQueryString(EGL_VERSION) is a property of the display, which we don't | |
212 | * have yet. So you have to query for extensions no matter what. Fortunately | |
213 | * epoxy_has_egl_extension _does_ let you query for client extensions, so | |
214 | * we don't have to write our own extension string parsing. | |
215 | * | |
216 | * 4. There is no EGL_KHR_platform_base to complement the EXT one, thus one | |
217 | * needs to know EGL 1.5 is supported in order to use the eglGetPlatformDisplay | |
218 | * function pointer. | |
219 | * We can workaround this (circular dependency) by probing for the EGL 1.5 | |
220 | * platform extensions (EGL_KHR_platform_gbm and friends) yet it doesn't seem | |
221 | * like mesa will be able to advertise these (even though it can do EGL 1.5). | |
222 | */ | |
223 | static EGLDisplay qemu_egl_get_display(void *native) | |
224 | { | |
225 | EGLDisplay dpy = EGL_NO_DISPLAY; | |
226 | ||
227 | #ifdef EGL_MESA_platform_gbm | |
228 | /* In practise any EGL 1.5 implementation would support the EXT extension */ | |
229 | if (epoxy_has_egl_extension(NULL, "EGL_EXT_platform_base")) { | |
230 | PFNEGLGETPLATFORMDISPLAYEXTPROC getPlatformDisplayEXT = | |
231 | (void *) eglGetProcAddress("eglGetPlatformDisplayEXT"); | |
232 | if (getPlatformDisplayEXT) { | |
233 | dpy = getPlatformDisplayEXT(EGL_PLATFORM_GBM_MESA, native, NULL); | |
234 | } | |
235 | } | |
236 | #endif | |
237 | ||
238 | if (dpy == EGL_NO_DISPLAY) { | |
239 | /* fallback */ | |
240 | dpy = eglGetDisplay(native); | |
241 | } | |
242 | return dpy; | |
243 | } | |
244 | ||
7ced9e9f GH |
245 | int qemu_egl_init_dpy(EGLNativeDisplayType dpy, bool gles, bool debug) |
246 | { | |
247 | static const EGLint conf_att_gl[] = { | |
248 | EGL_SURFACE_TYPE, EGL_WINDOW_BIT, | |
249 | EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT, | |
250 | EGL_RED_SIZE, 5, | |
251 | EGL_GREEN_SIZE, 5, | |
252 | EGL_BLUE_SIZE, 5, | |
253 | EGL_ALPHA_SIZE, 0, | |
254 | EGL_NONE, | |
255 | }; | |
256 | static const EGLint conf_att_gles[] = { | |
257 | EGL_SURFACE_TYPE, EGL_WINDOW_BIT, | |
258 | EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, | |
259 | EGL_RED_SIZE, 5, | |
260 | EGL_GREEN_SIZE, 5, | |
261 | EGL_BLUE_SIZE, 5, | |
262 | EGL_ALPHA_SIZE, 0, | |
263 | EGL_NONE, | |
264 | }; | |
265 | EGLint major, minor; | |
266 | EGLBoolean b; | |
267 | EGLint n; | |
268 | ||
269 | if (debug) { | |
270 | egl_debug = 1; | |
271 | setenv("EGL_LOG_LEVEL", "debug", true); | |
272 | setenv("LIBGL_DEBUG", "verbose", true); | |
273 | } | |
274 | ||
8bce03e3 GH |
275 | egl_dbg("qemu_egl_get_display (dpy %p) ...\n", dpy); |
276 | qemu_egl_display = qemu_egl_get_display(dpy); | |
7ced9e9f | 277 | if (qemu_egl_display == EGL_NO_DISPLAY) { |
38a55bdd | 278 | error_report("egl: eglGetDisplay failed"); |
7ced9e9f GH |
279 | return -1; |
280 | } | |
281 | ||
282 | egl_dbg("eglInitialize ...\n"); | |
283 | b = eglInitialize(qemu_egl_display, &major, &minor); | |
284 | if (b == EGL_FALSE) { | |
38a55bdd | 285 | error_report("egl: eglInitialize failed"); |
7ced9e9f GH |
286 | return -1; |
287 | } | |
288 | ||
289 | egl_dbg("eglBindAPI ...\n"); | |
290 | b = eglBindAPI(gles ? EGL_OPENGL_ES_API : EGL_OPENGL_API); | |
291 | if (b == EGL_FALSE) { | |
38a55bdd | 292 | error_report("egl: eglBindAPI failed"); |
7ced9e9f GH |
293 | return -1; |
294 | } | |
295 | ||
296 | egl_dbg("eglChooseConfig ...\n"); | |
297 | b = eglChooseConfig(qemu_egl_display, | |
298 | gles ? conf_att_gles : conf_att_gl, | |
299 | &qemu_egl_config, 1, &n); | |
300 | if (b == EGL_FALSE || n != 1) { | |
38a55bdd | 301 | error_report("egl: eglChooseConfig failed"); |
7ced9e9f GH |
302 | return -1; |
303 | } | |
304 | ||
305 | egl_gles = gles; | |
306 | return 0; | |
307 | } | |
308 | ||
309 | EGLContext qemu_egl_init_ctx(void) | |
310 | { | |
311 | static const EGLint ctx_att_gl[] = { | |
312 | EGL_NONE | |
313 | }; | |
314 | static const EGLint ctx_att_gles[] = { | |
315 | EGL_CONTEXT_CLIENT_VERSION, 2, | |
316 | EGL_NONE | |
317 | }; | |
318 | ||
319 | EGLContext ectx; | |
320 | EGLBoolean b; | |
321 | ||
322 | egl_dbg("eglCreateContext ...\n"); | |
323 | ectx = eglCreateContext(qemu_egl_display, qemu_egl_config, EGL_NO_CONTEXT, | |
324 | egl_gles ? ctx_att_gles : ctx_att_gl); | |
325 | if (ectx == EGL_NO_CONTEXT) { | |
38a55bdd | 326 | error_report("egl: eglCreateContext failed"); |
7ced9e9f GH |
327 | return NULL; |
328 | } | |
329 | ||
330 | b = eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, ectx); | |
331 | if (b == EGL_FALSE) { | |
38a55bdd | 332 | error_report("egl: eglMakeCurrent failed"); |
7ced9e9f GH |
333 | return NULL; |
334 | } | |
335 | ||
336 | return ectx; | |
337 | } |