native_wayland.c revision ca79036fe8170a87fe8118fb812320c2536b6d46 
1/*
2 * Mesa 3-D graphics library
3 * Version:  7.11
4 *
5 * Copyright (C) 2011 Benjamin Franzke <benjaminfranzke@googlemail.com>
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
24 */
25
26#include "util/u_memory.h"
27#include "util/u_inlines.h"
28
29#include "pipe/p_compiler.h"
30#include "pipe/p_screen.h"
31#include "pipe/p_context.h"
32#include "pipe/p_state.h"
33#include "state_tracker/drm_driver.h"
34#include "egllog.h"
35
36#include "native_wayland.h"
37
38static struct native_event_handler *wayland_event_handler;
39
40static void
41sync_callback(void *data)
42{
43   int *done = data;
44
45   *done = 1;
46}
47
48static void
49force_roundtrip(struct wl_display *display)
50{
51   int done = 0;
52
53   wl_display_sync_callback(display, sync_callback, &done);
54   wl_display_iterate(display, WL_DISPLAY_WRITABLE);
55   while (!done)
56      wl_display_iterate(display, WL_DISPLAY_READABLE);
57}
58
59static const struct native_config **
60wayland_display_get_configs (struct native_display *ndpy, int *num_configs)
61{
62   struct wayland_display *display = wayland_display(ndpy);
63   const struct native_config **configs;
64   int i;
65
66   if (!display->config) {
67      struct native_config *nconf;
68      display->config = CALLOC(2, sizeof(*display->config));
69      if (!display->config)
70         return NULL;
71
72      for (i = 0; i < 2; ++i) {
73         nconf = &display->config[i].base;
74
75         nconf->buffer_mask =
76            (1 << NATIVE_ATTACHMENT_FRONT_LEFT) |
77            (1 << NATIVE_ATTACHMENT_BACK_LEFT);
78
79         nconf->window_bit = TRUE;
80         nconf->pixmap_bit = TRUE;
81      }
82
83      display->config[0].base.color_format = PIPE_FORMAT_B8G8R8A8_UNORM;
84      display->config[1].base.color_format = PIPE_FORMAT_B8G8R8X8_UNORM;
85   }
86
87   configs = MALLOC(2 * sizeof(*configs));
88   if (configs) {
89      configs[0] = &display->config[0].base;
90      configs[1] = &display->config[1].base;
91      if (num_configs)
92         *num_configs = 2;
93   }
94
95   return configs;
96}
97
98static int
99wayland_display_get_param(struct native_display *ndpy,
100                          enum native_param_type param)
101{
102   int val;
103
104   switch (param) {
105   case NATIVE_PARAM_USE_NATIVE_BUFFER:
106   case NATIVE_PARAM_PRESERVE_BUFFER:
107   case NATIVE_PARAM_MAX_SWAP_INTERVAL:
108   default:
109      val = 0;
110      break;
111   }
112
113   return val;
114}
115
116static boolean
117wayland_display_is_pixmap_supported(struct native_display *ndpy,
118                                    EGLNativePixmapType pix,
119                                    const struct native_config *nconf)
120{
121   /* all wl_egl_pixmaps are supported */
122
123   return TRUE;
124}
125
126static void
127wayland_pixmap_destroy(struct wl_egl_pixmap *egl_pixmap)
128{
129   struct pipe_resource *resource = egl_pixmap->driver_private;
130
131   assert(resource);
132
133   pipe_resource_reference(&resource, NULL);
134   if (egl_pixmap->buffer) {
135      wl_buffer_destroy(egl_pixmap->buffer);
136      egl_pixmap->buffer = NULL;
137   }
138
139   egl_pixmap->driver_private = NULL;
140   egl_pixmap->destroy = NULL;
141}
142
143static void
144wayland_pixmap_surface_initialize(struct wayland_surface *surface)
145{
146   struct wayland_display *display = wayland_display(&surface->display->base);
147   const enum native_attachment front_natt = NATIVE_ATTACHMENT_FRONT_LEFT;
148
149   if (surface->pix->buffer != NULL)
150      return;
151
152   surface->pix->buffer  = display->create_buffer(display, surface, front_natt);
153   surface->pix->destroy = wayland_pixmap_destroy;
154   surface->pix->driver_private =
155      resource_surface_get_single_resource(surface->rsurf, front_natt);
156}
157
158static void
159wayland_release_pending_resource(void *data)
160{
161   struct wayland_surface *surface = data;
162
163   /* FIXME: print internal error */
164   if (!surface->pending_resource)
165      return;
166
167   pipe_resource_reference(&surface->pending_resource, NULL);
168}
169
170static void
171wayland_window_surface_handle_resize(struct wayland_surface *surface)
172{
173   struct wayland_display *display = surface->display;
174   struct pipe_resource *front_resource;
175   const enum native_attachment front_natt = NATIVE_ATTACHMENT_FRONT_LEFT;
176   int i;
177
178   front_resource = resource_surface_get_single_resource(surface->rsurf,
179                                                         front_natt);
180   if (resource_surface_set_size(surface->rsurf,
181                                 surface->win->width, surface->win->height)) {
182
183      if (surface->pending_resource)
184         force_roundtrip(display->dpy);
185
186      if (front_resource) {
187         surface->pending_resource = front_resource;
188         front_resource = NULL;
189         wl_display_sync_callback(display->dpy,
190                                  wayland_release_pending_resource, surface);
191      }
192
193      for (i = 0; i < WL_BUFFER_COUNT; ++i) {
194         if (surface->buffer[i])
195            wl_buffer_destroy(surface->buffer[i]);
196         surface->buffer[i] = NULL;
197      }
198   }
199   pipe_resource_reference(&front_resource, NULL);
200
201   surface->dx = surface->win->dx;
202   surface->dy = surface->win->dy;
203   surface->win->dx = 0;
204   surface->win->dy = 0;
205}
206
207static boolean
208wayland_surface_validate(struct native_surface *nsurf, uint attachment_mask,
209                         unsigned int *seq_num, struct pipe_resource **textures,
210                         int *width, int *height)
211{
212   struct wayland_surface *surface = wayland_surface(nsurf);
213
214   if (surface->type == WL_WINDOW_SURFACE)
215      wayland_window_surface_handle_resize(surface);
216
217   if (!resource_surface_add_resources(surface->rsurf, attachment_mask |
218                                       surface->attachment_mask))
219      return FALSE;
220
221   if (textures)
222      resource_surface_get_resources(surface->rsurf, textures, attachment_mask);
223
224   if (seq_num)
225      *seq_num = surface->sequence_number;
226
227   resource_surface_get_size(surface->rsurf, (uint *) width, (uint *) height);
228
229   if (surface->type == WL_PIXMAP_SURFACE)
230      wayland_pixmap_surface_initialize(surface);
231
232   return TRUE;
233}
234
235static void
236wayland_frame_callback(struct wl_surface *surf, void *data, uint32_t time)
237{
238   struct wayland_surface *surface = data;
239
240   surface->block_swap_buffers = FALSE;
241}
242
243static INLINE void
244wayland_buffers_swap(struct wl_buffer **buffer,
245                     enum wayland_buffer_type buf1,
246                     enum wayland_buffer_type buf2)
247{
248   struct wl_buffer *tmp = buffer[buf1];
249   buffer[buf1] = buffer[buf2];
250   buffer[buf2] = tmp;
251}
252
253static boolean
254wayland_surface_swap_buffers(struct native_surface *nsurf)
255{
256   struct wayland_surface *surface = wayland_surface(nsurf);
257   struct wayland_display *display = surface->display;
258
259   while (surface->block_swap_buffers)
260      wl_display_iterate(display->dpy, WL_DISPLAY_READABLE);
261
262   surface->block_swap_buffers = TRUE;
263   wl_display_frame_callback(display->dpy, surface->win->surface,
264                             wayland_frame_callback, surface);
265
266   if (surface->type == WL_WINDOW_SURFACE) {
267      resource_surface_swap_buffers(surface->rsurf,
268                                    NATIVE_ATTACHMENT_FRONT_LEFT,
269                                    NATIVE_ATTACHMENT_BACK_LEFT, FALSE);
270
271      wayland_buffers_swap(surface->buffer, WL_BUFFER_FRONT, WL_BUFFER_BACK);
272
273      if (surface->buffer[WL_BUFFER_FRONT] == NULL)
274         surface->buffer[WL_BUFFER_FRONT] =
275            display->create_buffer(display, surface,
276                                   NATIVE_ATTACHMENT_FRONT_LEFT);
277
278      wl_surface_attach(surface->win->surface, surface->buffer[WL_BUFFER_FRONT],
279                        surface->dx, surface->dy);
280
281      resource_surface_get_size(surface->rsurf,
282                                (uint *) &surface->win->attached_width,
283                                (uint *) &surface->win->attached_height);
284      surface->dx = 0;
285      surface->dy = 0;
286   }
287
288   surface->sequence_number++;
289   wayland_event_handler->invalid_surface(&display->base,
290                                          &surface->base,
291                                          surface->sequence_number);
292
293   return TRUE;
294}
295
296static boolean
297wayland_surface_present(struct native_surface *nsurf,
298                        enum native_attachment natt,
299                        boolean preserve,
300                        uint swap_interval)
301{
302   struct wayland_surface *surface = wayland_surface(nsurf);
303   uint width, height;
304   boolean ret;
305
306   if (preserve || swap_interval)
307      return FALSE;
308
309   switch (natt) {
310   case NATIVE_ATTACHMENT_FRONT_LEFT:
311      ret = TRUE;
312      break;
313   case NATIVE_ATTACHMENT_BACK_LEFT:
314      ret = wayland_surface_swap_buffers(nsurf);
315      break;
316   default:
317      ret = FALSE;
318      break;
319   }
320
321   if (surface->type == WL_WINDOW_SURFACE) {
322      resource_surface_get_size(surface->rsurf, &width, &height);
323      wl_buffer_damage(surface->buffer[WL_BUFFER_FRONT], 0, 0, width, height);
324      wl_surface_damage(surface->win->surface, 0, 0, width, height);
325   }
326
327   return ret;
328}
329
330static void
331wayland_surface_wait(struct native_surface *nsurf)
332{
333   /* no-op */
334}
335
336static void
337wayland_surface_destroy(struct native_surface *nsurf)
338{
339   struct wayland_surface *surface = wayland_surface(nsurf);
340   enum wayland_buffer_type buffer;
341
342   for (buffer = 0; buffer < WL_BUFFER_COUNT; ++buffer) {
343      if (surface->buffer[buffer])
344         wl_buffer_destroy(surface->buffer[buffer]);
345   }
346
347   resource_surface_destroy(surface->rsurf);
348   FREE(surface);
349}
350
351
352
353static struct native_surface *
354wayland_create_pixmap_surface(struct native_display *ndpy,
355                              EGLNativePixmapType pix,
356                              const struct native_config *nconf)
357{
358   struct wayland_display *display = wayland_display(ndpy);
359   struct wayland_surface *surface;
360   struct wl_egl_pixmap *egl_pixmap = (struct wl_egl_pixmap *) pix;
361   enum native_attachment natt = NATIVE_ATTACHMENT_FRONT_LEFT;
362   uint bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW |
363      PIPE_BIND_DISPLAY_TARGET | PIPE_BIND_SCANOUT;
364
365   surface = CALLOC_STRUCT(wayland_surface);
366   if (!surface)
367      return NULL;
368
369   surface->display = display;
370
371   surface->pending_resource = NULL;
372   surface->type = WL_PIXMAP_SURFACE;
373   surface->pix = egl_pixmap;
374
375   if (nconf)
376      surface->color_format = nconf->color_format;
377   else /* FIXME: derive format from wl_visual */
378      surface->color_format = PIPE_FORMAT_B8G8R8A8_UNORM;
379
380   surface->attachment_mask = (1 << NATIVE_ATTACHMENT_FRONT_LEFT);
381
382   surface->rsurf = resource_surface_create(display->base.screen,
383                                            surface->color_format, bind);
384
385   if (!surface->rsurf) {
386      FREE(surface);
387      return NULL;
388   }
389
390   resource_surface_set_size(surface->rsurf,
391                             egl_pixmap->width, egl_pixmap->height);
392
393   /* the pixmap is already allocated, so import it */
394   if (surface->pix->buffer != NULL)
395      resource_surface_import_resource(surface->rsurf, natt,
396                                       surface->pix->driver_private);
397
398   surface->base.destroy = wayland_surface_destroy;
399   surface->base.present = wayland_surface_present;
400   surface->base.validate = wayland_surface_validate;
401   surface->base.wait = wayland_surface_wait;
402
403   return &surface->base;
404}
405
406
407static struct native_surface *
408wayland_create_window_surface(struct native_display *ndpy,
409                              EGLNativeWindowType win,
410                              const struct native_config *nconf)
411{
412   struct wayland_display *display = wayland_display(ndpy);
413   struct wayland_config *config = wayland_config(nconf);
414   struct wayland_surface *surface;
415   uint bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW |
416      PIPE_BIND_DISPLAY_TARGET | PIPE_BIND_SCANOUT;
417
418   surface = CALLOC_STRUCT(wayland_surface);
419   if (!surface)
420      return NULL;
421
422   surface->display = display;
423   surface->color_format = config->base.color_format;
424
425   surface->win = (struct wl_egl_window *) win;
426
427   surface->pending_resource = NULL;
428   surface->block_swap_buffers = FALSE;
429   surface->type = WL_WINDOW_SURFACE;
430
431   surface->buffer[WL_BUFFER_FRONT] = NULL;
432   surface->buffer[WL_BUFFER_BACK] = NULL;
433   surface->attachment_mask = (1 << NATIVE_ATTACHMENT_FRONT_LEFT) |
434      (1 << NATIVE_ATTACHMENT_BACK_LEFT);
435
436   surface->rsurf = resource_surface_create(display->base.screen,
437                                            surface->color_format, bind);
438
439   if (!surface->rsurf) {
440      FREE(surface);
441      return NULL;
442   }
443
444   surface->base.destroy = wayland_surface_destroy;
445   surface->base.present = wayland_surface_present;
446   surface->base.validate = wayland_surface_validate;
447   surface->base.wait = wayland_surface_wait;
448
449   return &surface->base;
450}
451
452static void
453native_set_event_handler(struct native_event_handler *event_handler)
454{
455   wayland_event_handler = event_handler;
456}
457
458static struct native_display *
459native_create_display(void *dpy, boolean use_sw, void *user_data)
460{
461   struct wayland_display *display = NULL;
462
463   use_sw = use_sw || debug_get_bool_option("EGL_SOFTWARE", FALSE);
464
465   if (use_sw) {
466      _eglLog(_EGL_INFO, "use software fallback");
467      display = wayland_create_shm_display((struct wl_display *) dpy,
468                                           wayland_event_handler,
469                                           user_data);
470   } else {
471      display = wayland_create_drm_display((struct wl_display *) dpy,
472                                           wayland_event_handler,
473                                           user_data);
474   }
475
476   if (!display)
477      return NULL;
478
479   display->base.get_param = wayland_display_get_param;
480   display->base.get_configs = wayland_display_get_configs;
481   display->base.is_pixmap_supported = wayland_display_is_pixmap_supported;
482   display->base.create_window_surface = wayland_create_window_surface;
483   display->base.create_pixmap_surface = wayland_create_pixmap_surface;
484
485   return &display->base;
486}
487
488static const struct native_platform wayland_platform = {
489   "wayland", /* name */
490   native_set_event_handler,
491   native_create_display
492};
493
494const struct native_platform *
495native_get_wayland_platform(void)
496{
497   return &wayland_platform;
498}
499
500/* vim: set sw=3 ts=8 sts=3 expandtab: */
501