aboutsummaryrefslogtreecommitdiff
path: root/src/egl.c
blob: 1daed3c6c480b80ed91434d52308ac4764d73425 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
#include "egl.h"
#include "library_loader.h"
#include <string.h>
#include <stdio.h>
#include <dlfcn.h>
#include <assert.h>

#include <wayland-client.h>
#include <wayland-egl.h>
//#include "../external/wlr-export-dmabuf-unstable-v1-client-protocol.h"
#include <unistd.h>

#if 0
static struct wl_compositor *compositor = NULL;
static struct wl_output *output = NULL;
static struct zwlr_export_dmabuf_manager_v1 *export_manager = NULL;
static struct zwlr_export_dmabuf_frame_v1 *current_frame = NULL;
//static struct wl_shell *shell = NULL;

struct window {
	EGLContext egl_context;
	struct wl_surface *surface;
	//struct wl_shell_surface *shell_surface;
	struct wl_egl_window *egl_window;
	EGLSurface egl_surface;
};

static void output_handle_geometry(void *data, struct wl_output *wl_output,
		int32_t x, int32_t y, int32_t phys_width, int32_t phys_height,
		int32_t subpixel, const char *make, const char *model,
		int32_t transform) {
	fprintf(stderr, "output geometry, make: %s, model: %s\n", make, model);
}

static void output_handle_mode(void *data, struct wl_output *wl_output,
		uint32_t flags, int32_t width, int32_t height, int32_t refresh) {
	
}

static void output_handle_done(void* data, struct wl_output *wl_output) {
	/* Nothing to do */
}

static void output_handle_scale(void* data, struct wl_output *wl_output,
		int32_t factor) {
	/* Nothing to do */
}

static const struct wl_output_listener output_listener = {
	.geometry = output_handle_geometry,
	.mode = output_handle_mode,
	.done = output_handle_done,
	.scale = output_handle_scale,
};
#endif

static void registry_add_object (void *data, struct wl_registry *registry, uint32_t name, const char *interface, uint32_t version) {
    (void)version;
    struct wl_compositor **wayland_compositor = data;
	if (strcmp(interface, "wl_compositor") == 0) {
        if(*wayland_compositor) {
            wl_compositor_destroy(*wayland_compositor);
            *wayland_compositor = NULL;
        }
		*wayland_compositor = wl_registry_bind(registry, name, &wl_compositor_interface, 1);
    }/* else if(strcmp(interface, wl_output_interface.name) == 0) {
        fprintf(stderr, "wayland output, name: %u\n", name);
        output = wl_registry_bind(registry, name, &wl_output_interface, 1);
        wl_output_add_listener(output, &output_listener, NULL);
	} else if(strcmp(interface, zwlr_export_dmabuf_manager_v1_interface.name) == 0) {
        export_manager = wl_registry_bind(registry, name, &zwlr_export_dmabuf_manager_v1_interface, 1);
    }*/
    //fprintf(stderr, "interface: %s\n", interface);
}

static void registry_remove_object (void *data, struct wl_registry *registry, uint32_t name) {
	(void)data;
    (void)registry;
    (void)name;
}

static struct wl_registry_listener registry_listener = {&registry_add_object, &registry_remove_object};

#if 0
static void register_cb(gsr_egl *egl);

static void frame_start(void *data, struct zwlr_export_dmabuf_frame_v1 *frame,
		uint32_t width, uint32_t height, uint32_t offset_x, uint32_t offset_y,
		uint32_t buffer_flags, uint32_t flags, uint32_t format,
		uint32_t mod_high, uint32_t mod_low, uint32_t num_objects) {
    gsr_egl *egl = data;
	//fprintf(stderr, "frame start, width: %u, height: %u, offset x: %u, offset y: %u, format: %u, num objects: %u\n", width, height, offset_x, offset_y, format, num_objects);
    egl->width = width;
    egl->height = height;
    egl->pixel_format = format;
    egl->modifier = ((uint64_t)mod_high << 32) | mod_low;
    current_frame = frame;
}

static void frame_object(void *data, struct zwlr_export_dmabuf_frame_v1 *frame,
		uint32_t index, int32_t fd, uint32_t size, uint32_t offset,
		uint32_t stride, uint32_t plane_index) {
    // TODO: What if we get multiple objects? then we get multiple fd per frame
    gsr_egl *egl = data;
    //egl->fd = fd;
    egl->pitch = stride;
    egl->offset = offset;
	//fprintf(stderr, "new frame, fd: %d, index: %u, size: %u, offset: %u, stride: %u, plane_index: %u\n", fd, index, size, offset, stride, plane_index);
    close(fd);
}


static void frame_ready(void *data, struct zwlr_export_dmabuf_frame_v1 *frame,
		uint32_t tv_sec_hi, uint32_t tv_sec_lo, uint32_t tv_nsec) {
	register_cb(data);
}

static void frame_cancel(void *data, struct zwlr_export_dmabuf_frame_v1 *frame,
		uint32_t reason) {
    register_cb(data);
}


static const struct zwlr_export_dmabuf_frame_v1_listener frame_listener = {
	.frame = frame_start,
	.object = frame_object,
	.ready = frame_ready,
	.cancel = frame_cancel,
};

static struct zwlr_export_dmabuf_frame_v1 *frame_callback = NULL;
static void register_cb(gsr_egl *egl) {
    bool with_cursor = false;
    frame_callback = zwlr_export_dmabuf_manager_v1_capture_output(export_manager, with_cursor, output);
    zwlr_export_dmabuf_frame_v1_add_listener(frame_callback, &frame_listener, egl);
}
#endif

// TODO: Create egl context without surface (in other words, x11/wayland agnostic, doesn't require x11/wayland dependency)
static bool gsr_egl_create_window(gsr_egl *self, bool wayland) {
    EGLConfig  ecfg;
    int32_t    num_config = 0;

    EGLDisplay egl_display = NULL;
    EGLSurface egl_surface = NULL;
    EGLContext egl_context = NULL;

    Window x11_window = None;

    struct wl_registry *wayland_registry = NULL;
    struct wl_compositor *wayland_compositor = NULL;
    struct wl_surface *wayland_surface = NULL;
    void *wayland_dpy = NULL;
    void *wayland_window = NULL;

    const int32_t attr[] = {
        EGL_BUFFER_SIZE, 24,
        EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
        EGL_NONE
    };

    const int32_t ctxattr[] = {
        EGL_CONTEXT_CLIENT_VERSION, 2,
        EGL_NONE
    };

    if(wayland) {
        wayland_dpy = wl_display_connect(NULL);
        if(!wayland_dpy) {
            fprintf(stderr, "gsr error: gsr_egl_create_window failed: wl_display_connect failed\n");
            goto fail;
        }

        wayland_registry = wl_display_get_registry(wayland_dpy); // TODO: Error checking
        wl_registry_add_listener(wayland_registry, &registry_listener, &wayland_compositor); // TODO: Error checking

        // Fetch globals
        wl_display_roundtrip(wayland_dpy);

        // fetch wl_output
        wl_display_roundtrip(wayland_dpy);

        if(!wayland_compositor) {
            fprintf(stderr, "gsr error: gsr_gl_create_window failed: failed to find compositor\n");
            goto fail;
        }

        /*if(!output) {
            fprintf(stderr, "gsr error: gsr_gl_create_window failed: failed to find output\n");
            goto fail;
        }

        if(!export_manager) {
            fprintf(stderr, "gsr error: gsr_gl_create_window failed: failed to find export manager\n");
            goto fail;
        }*/
    } else {
        x11_window = XCreateWindow(self->x11_dpy, DefaultRootWindow(self->x11_dpy), 0, 0, 16, 16, 0, CopyFromParent, InputOutput, CopyFromParent, 0, NULL);

        if(!x11_window) {
            fprintf(stderr, "gsr error: gsr_gl_create_window failed: failed to create gl window\n");
            goto fail;
        }
    }

    self->eglBindAPI(EGL_OPENGL_ES_API);

    egl_display = self->eglGetDisplay(wayland_dpy ? (EGLNativeDisplayType)wayland_dpy : (EGLNativeDisplayType)self->x11_dpy);
    if(!egl_display) {
        fprintf(stderr, "gsr error: gsr_egl_create_window failed: eglGetDisplay failed\n");
        goto fail;
    }

    if(!self->eglInitialize(egl_display, NULL, NULL)) {
        fprintf(stderr, "gsr error: gsr_egl_create_window failed: eglInitialize failed\n");
        goto fail;
    }
    
    if(!self->eglChooseConfig(egl_display, attr, &ecfg, 1, &num_config) || num_config != 1) {
        fprintf(stderr, "gsr error: gsr_egl_create_window failed: failed to find a matching config\n");
        goto fail;
    }
    
    egl_context = self->eglCreateContext(egl_display, ecfg, NULL, ctxattr);
    if(!egl_context) {
        fprintf(stderr, "gsr error: gsr_egl_create_window failed: failed to create egl context\n");
        goto fail;
    }

    if(wayland) {
        wayland_surface = wl_compositor_create_surface(wayland_compositor);
        wayland_window = wl_egl_window_create(wayland_surface, 16, 16);
        egl_surface = self->eglCreateWindowSurface(egl_display, ecfg, (EGLNativeWindowType)wayland_window, NULL);
    } else {
        egl_surface = self->eglCreateWindowSurface(egl_display, ecfg, (EGLNativeWindowType)x11_window, NULL);
    }

    if(!egl_surface) {
        fprintf(stderr, "gsr error: gsr_egl_create_window failed: failed to create window surface\n");
        goto fail;
    }

    if(!self->eglMakeCurrent(egl_display, egl_surface, egl_surface, egl_context)) {
        fprintf(stderr, "gsr error: gsr_egl_create_window failed: failed to make context current\n");
        goto fail;
    }

    self->egl_display = egl_display;
    self->egl_surface = egl_surface;
    self->egl_context = egl_context;

    self->x11_window = x11_window;

    self->wayland_dpy = wayland_dpy;
    self->wayland_window = wayland_window;
    self->wayland_surface = wayland_surface;
    self->wayland_compositor = wayland_compositor;
    self->wayland_registry = wayland_registry;
    return true;

    fail:
    if(egl_context)
        self->eglDestroyContext(egl_display, egl_context);
    if(egl_surface)
        self->eglDestroySurface(egl_display, egl_surface);
    if(egl_display)
        self->eglTerminate(egl_display);
    if(x11_window)
        XDestroyWindow(self->x11_dpy, x11_window);
    if(wayland_window)
        wl_egl_window_destroy(wayland_window);
    if(wayland_surface)
        wl_surface_destroy(wayland_surface);
    if(wayland_compositor)
        wl_compositor_destroy(wayland_compositor);
    if(wayland_registry)
        wl_registry_destroy(wayland_registry);
    if(wayland_dpy)
        wl_display_disconnect(wayland_dpy);
    return false;
}

static bool gsr_egl_load_egl(gsr_egl *self, void *library) {
    dlsym_assign required_dlsym[] = {
        { (void**)&self->eglGetDisplay, "eglGetDisplay" },
        { (void**)&self->eglInitialize, "eglInitialize" },
        { (void**)&self->eglTerminate, "eglTerminate" },
        { (void**)&self->eglChooseConfig, "eglChooseConfig" },
        { (void**)&self->eglCreateWindowSurface, "eglCreateWindowSurface" },
        { (void**)&self->eglCreateContext, "eglCreateContext" },
        { (void**)&self->eglMakeCurrent, "eglMakeCurrent" },
        { (void**)&self->eglDestroyContext, "eglDestroyContext" },
        { (void**)&self->eglDestroySurface, "eglDestroySurface" },
        { (void**)&self->eglBindAPI, "eglBindAPI" },

        { NULL, NULL }
    };

    if(!dlsym_load_list(library, required_dlsym)) {
        fprintf(stderr, "gsr error: gsr_egl_load failed: missing required symbols in libEGL.so.1\n");
        return false;
    }

    return true;
}

static bool gsr_egl_load_gl(gsr_egl *self, void *library) {
    dlsym_assign required_dlsym[] = {
        { (void**)&self->glGetString, "glGetString" },

        { NULL, NULL }
    };

    if(!dlsym_load_list(library, required_dlsym)) {
        fprintf(stderr, "gsr error: gsr_egl_load failed: missing required symbols in libGL.so.1\n");
        return false;
    }

    return true;
}

bool gsr_egl_load(gsr_egl *self, Display *dpy, bool wayland) {
    memset(self, 0, sizeof(gsr_egl));
    self->x11_dpy = dpy;

    void *egl_lib = NULL;
    void *gl_lib = NULL;

    dlerror(); /* clear */
    egl_lib = dlopen("libEGL.so.1", RTLD_LAZY);
    if(!egl_lib) {
        fprintf(stderr, "gsr error: gsr_egl_load: failed to load libEGL.so.1, error: %s\n", dlerror());
        goto fail;
    }

    gl_lib = dlopen("libGL.so.1", RTLD_LAZY);
    if(!egl_lib) {
        fprintf(stderr, "gsr error: gsr_egl_load: failed to load libGL.so.1, error: %s\n", dlerror());
        goto fail;
    }

    if(!gsr_egl_load_egl(self, egl_lib))
        goto fail;

    if(!gsr_egl_load_gl(self, gl_lib))
        goto fail;

    if(!gsr_egl_create_window(self, wayland))
        goto fail;

    self->egl_library = egl_lib;
    self->gl_library = gl_lib;
    return true;

    fail:
    if(egl_lib)
        dlclose(egl_lib);
    if(gl_lib)
        dlclose(gl_lib);
    memset(self, 0, sizeof(gsr_egl));
    return false;
}

void gsr_egl_unload(gsr_egl *self) {
    if(self->egl_context) {
        self->eglDestroyContext(self->egl_display, self->egl_context);
        self->egl_context = NULL;
    }

    if(self->egl_surface) {
        self->eglDestroySurface(self->egl_display, self->egl_surface);
        self->egl_surface = NULL;
    }

    if(self->egl_display) {
        self->eglTerminate(self->egl_display);
        self->egl_display = NULL;
    }

    if(self->x11_window) {
        XDestroyWindow(self->x11_dpy, self->x11_window);
        self->x11_window = None;
    }

    if(self->wayland_window) {
        wl_egl_window_destroy(self->wayland_window);
        self->wayland_window = NULL;
    }

    if(self->wayland_surface) {
        wl_surface_destroy(self->wayland_surface);
        self->wayland_surface = NULL;
    }

    if(self->wayland_compositor) {
        wl_compositor_destroy(self->wayland_compositor);
        self->wayland_compositor = NULL;
    }

    if(self->wayland_registry) {
        wl_registry_destroy(self->wayland_registry);
        self->wayland_registry = NULL;
    }

    if(self->wayland_dpy) {
        wl_display_disconnect(self->wayland_dpy);
        self->wayland_dpy = NULL;
    }

    if(self->egl_library) {
        dlclose(self->egl_library);
        self->egl_library = NULL;
    }

    if(self->gl_library) {
        dlclose(self->gl_library);
        self->gl_library = NULL;
    }

    memset(self, 0, sizeof(gsr_egl));
}

void gsr_egl_update(gsr_egl *self) {
    if(!self->wayland_dpy)
        return;

    wl_display_dispatch(self->wayland_dpy);
}

void gsr_egl_cleanup_frame(gsr_egl *self) {
    if(!self->wayland_dpy)
        return;

    if(self->fd > 0) {
        close(self->fd);
        self->fd = 0;
    }

    /*if(current_frame) {
        zwlr_export_dmabuf_frame_v1_destroy(current_frame);
        current_frame = NULL;
    }*/
}