egl_g3d.c revision 975b7ef92a74c33bb853b012f377fb098e84fc46 
1/*
2 * Mesa 3-D graphics library
3 * Version:  7.8
4 *
5 * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
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 "egldriver.h"
27#include "eglcurrent.h"
28#include "egllog.h"
29
30#include "pipe/p_screen.h"
31#include "util/u_memory.h"
32#include "util/u_format.h"
33#include "util/u_string.h"
34
35#include "egl_g3d.h"
36#include "egl_g3d_api.h"
37#include "egl_g3d_st.h"
38#include "egl_g3d_loader.h"
39#include "native.h"
40
41/**
42 * Get the native platform.
43 */
44static const struct native_platform *
45egl_g3d_get_platform(_EGLDriver *drv, _EGLPlatformType plat)
46{
47   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
48
49   if (!gdrv->platforms[plat]) {
50      const char *plat_name = NULL;
51      const struct native_platform *nplat = NULL;
52
53      switch (plat) {
54      case _EGL_PLATFORM_WINDOWS:
55         plat_name = "Windows";
56#ifdef HAVE_GDI_BACKEND
57         nplat = native_get_gdi_platform();
58#endif
59         break;
60      case _EGL_PLATFORM_X11:
61         plat_name = "X11";
62#ifdef HAVE_X11_BACKEND
63         nplat = native_get_x11_platform();
64#endif
65         break;
66      case _EGL_PLATFORM_DRM:
67         plat_name = "DRM";
68#ifdef HAVE_DRM_BACKEND
69         nplat = native_get_drm_platform();
70#endif
71         break;
72      case _EGL_PLATFORM_FBDEV:
73         plat_name = "FBDEV";
74#ifdef HAVE_FBDEV_BACKEND
75         nplat = native_get_fbdev_platform();
76#endif
77         break;
78      default:
79         break;
80      }
81
82      if (!nplat)
83         _eglLog(_EGL_WARNING, "unsupported platform %s", plat_name);
84
85      gdrv->platforms[plat] = nplat;
86   }
87
88   return gdrv->platforms[plat];
89}
90
91#ifdef EGL_MESA_screen_surface
92
93static void
94egl_g3d_add_screens(_EGLDriver *drv, _EGLDisplay *dpy)
95{
96   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
97   const struct native_connector **native_connectors;
98   EGLint num_connectors, i;
99
100   native_connectors =
101      gdpy->native->modeset->get_connectors(gdpy->native, &num_connectors, NULL);
102   if (!num_connectors) {
103      if (native_connectors)
104         FREE(native_connectors);
105      return;
106   }
107
108   for (i = 0; i < num_connectors; i++) {
109      const struct native_connector *nconn = native_connectors[i];
110      struct egl_g3d_screen *gscr;
111      const struct native_mode **native_modes;
112      EGLint num_modes, j;
113
114      /* TODO support for hotplug */
115      native_modes =
116         gdpy->native->modeset->get_modes(gdpy->native, nconn, &num_modes);
117      if (!num_modes) {
118         if (native_modes)
119            FREE(native_modes);
120         continue;
121      }
122
123      gscr = CALLOC_STRUCT(egl_g3d_screen);
124      if (!gscr) {
125         FREE(native_modes);
126         continue;
127      }
128
129      _eglInitScreen(&gscr->base, dpy, num_modes);
130      for (j = 0; j < gscr->base.NumModes; j++) {
131         const struct native_mode *nmode = native_modes[j];
132         _EGLMode *mode = &gscr->base.Modes[j];
133
134         mode->Width = nmode->width;
135         mode->Height = nmode->height;
136         mode->RefreshRate = nmode->refresh_rate;
137         mode->Optimal = EGL_FALSE;
138         mode->Interlaced = EGL_FALSE;
139         /* no need to strdup() */
140         mode->Name = nmode->desc;
141      }
142
143      gscr->native = nconn;
144      gscr->native_modes = native_modes;
145
146      _eglLinkScreen(&gscr->base);
147   }
148
149   FREE(native_connectors);
150}
151
152#endif /* EGL_MESA_screen_surface */
153
154/**
155 * Initialize and validate the EGL config attributes.
156 */
157static EGLBoolean
158init_config_attributes(_EGLConfig *conf, const struct native_config *nconf,
159                       EGLint api_mask, enum pipe_format depth_stencil_format,
160                       EGLBoolean preserve_buffer, EGLint max_swap_interval)
161{
162   uint rgba[4], depth_stencil[2], buffer_size;
163   EGLint surface_type;
164   EGLint i;
165
166   /* get the color and depth/stencil component sizes */
167   assert(nconf->color_format != PIPE_FORMAT_NONE);
168   buffer_size = 0;
169   for (i = 0; i < 4; i++) {
170      rgba[i] = util_format_get_component_bits(nconf->color_format,
171            UTIL_FORMAT_COLORSPACE_RGB, i);
172      buffer_size += rgba[i];
173   }
174   for (i = 0; i < 2; i++) {
175      if (depth_stencil_format != PIPE_FORMAT_NONE) {
176         depth_stencil[i] =
177            util_format_get_component_bits(depth_stencil_format,
178               UTIL_FORMAT_COLORSPACE_ZS, i);
179      }
180      else {
181         depth_stencil[i] = 0;
182      }
183   }
184
185   surface_type = 0x0;
186   if (nconf->window_bit)
187      surface_type |= EGL_WINDOW_BIT;
188   if (nconf->pixmap_bit)
189      surface_type |= EGL_PIXMAP_BIT;
190#ifdef EGL_MESA_screen_surface
191   if (nconf->scanout_bit)
192      surface_type |= EGL_SCREEN_BIT_MESA;
193#endif
194
195   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_LEFT))
196      surface_type |= EGL_PBUFFER_BIT;
197
198   conf->Conformant = api_mask;
199   conf->RenderableType = api_mask;
200
201   conf->RedSize = rgba[0];
202   conf->GreenSize = rgba[1];
203   conf->BlueSize = rgba[2];
204   conf->AlphaSize = rgba[3];
205   conf->BufferSize = buffer_size;
206
207   conf->DepthSize = depth_stencil[0];
208   conf->StencilSize = depth_stencil[1];
209
210   conf->SurfaceType = surface_type;
211
212   conf->NativeRenderable = EGL_TRUE;
213   if (surface_type & EGL_WINDOW_BIT) {
214      conf->NativeVisualID = nconf->native_visual_id;
215      conf->NativeVisualType = nconf->native_visual_type;
216   }
217
218   if (surface_type & EGL_PBUFFER_BIT) {
219      conf->BindToTextureRGB = EGL_TRUE;
220      if (rgba[3])
221         conf->BindToTextureRGBA = EGL_TRUE;
222
223      conf->MaxPbufferWidth = 4096;
224      conf->MaxPbufferHeight = 4096;
225      conf->MaxPbufferPixels = 4096 * 4096;
226   }
227
228   conf->Level = nconf->level;
229
230   if (nconf->transparent_rgb) {
231      conf->TransparentType = EGL_TRANSPARENT_RGB;
232      conf->TransparentRedValue = nconf->transparent_rgb_values[0];
233      conf->TransparentGreenValue = nconf->transparent_rgb_values[1];
234      conf->TransparentBlueValue = nconf->transparent_rgb_values[2];
235   }
236
237   conf->MinSwapInterval = 0;
238   conf->MaxSwapInterval = max_swap_interval;
239   if (preserve_buffer)
240      conf->SurfaceType |= EGL_SWAP_BEHAVIOR_PRESERVED_BIT;
241
242   return _eglValidateConfig(conf, EGL_FALSE);
243}
244
245/**
246 * Initialize an EGL config from the native config.
247 */
248static EGLBoolean
249egl_g3d_init_config(_EGLDriver *drv, _EGLDisplay *dpy,
250                    _EGLConfig *conf, const struct native_config *nconf,
251                    enum pipe_format depth_stencil_format,
252                    int preserve_buffer, int max_swap_interval)
253{
254   struct egl_g3d_config *gconf = egl_g3d_config(conf);
255   EGLint buffer_mask, api_mask;
256   EGLBoolean valid;
257
258   /* skip single-buffered configs */
259   if (!(nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_LEFT)))
260      return EGL_FALSE;
261
262   buffer_mask = 0x0;
263   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_FRONT_LEFT))
264      buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
265   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_LEFT))
266      buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
267   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_FRONT_RIGHT))
268      buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
269   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_RIGHT))
270      buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
271
272   gconf->stvis.buffer_mask = buffer_mask;
273   gconf->stvis.color_format = nconf->color_format;
274   gconf->stvis.depth_stencil_format = depth_stencil_format;
275   gconf->stvis.accum_format = PIPE_FORMAT_NONE;
276   gconf->stvis.samples = 0;
277
278   gconf->stvis.render_buffer = (buffer_mask & ST_ATTACHMENT_BACK_LEFT_MASK) ?
279      ST_ATTACHMENT_BACK_LEFT : ST_ATTACHMENT_FRONT_LEFT;
280
281   api_mask = dpy->ClientAPIsMask;
282   /* this is required by EGL, not by OpenGL ES */
283   if (nconf->window_bit &&
284       gconf->stvis.render_buffer != ST_ATTACHMENT_BACK_LEFT)
285      api_mask &= ~(EGL_OPENGL_ES_BIT | EGL_OPENGL_ES2_BIT);
286
287   if (!api_mask) {
288      _eglLog(_EGL_DEBUG, "no state tracker supports config 0x%x",
289            nconf->native_visual_id);
290   }
291
292   valid = init_config_attributes(&gconf->base,
293         nconf, api_mask, depth_stencil_format,
294         preserve_buffer, max_swap_interval);
295   if (!valid) {
296      _eglLog(_EGL_DEBUG, "skip invalid config 0x%x", nconf->native_visual_id);
297      return EGL_FALSE;
298   }
299
300   gconf->native = nconf;
301
302   return EGL_TRUE;
303}
304
305/**
306 * Get all interested depth/stencil formats of a display.
307 */
308static EGLint
309egl_g3d_fill_depth_stencil_formats(_EGLDisplay *dpy,
310                                   enum pipe_format formats[8])
311{
312   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
313   struct pipe_screen *screen = gdpy->native->screen;
314   const EGLint candidates[] = {
315      1, PIPE_FORMAT_Z16_UNORM,
316      1, PIPE_FORMAT_Z32_UNORM,
317      2, PIPE_FORMAT_Z24_UNORM_S8_USCALED, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
318      2, PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
319      0
320   };
321   const EGLint *fmt = candidates;
322   EGLint count;
323
324   count = 0;
325   formats[count++] = PIPE_FORMAT_NONE;
326
327   while (*fmt) {
328      EGLint i, n = *fmt++;
329
330      /* pick the first supported format */
331      for (i = 0; i < n; i++) {
332         if (screen->is_format_supported(screen, fmt[i],
333                  PIPE_TEXTURE_2D, 0, PIPE_BIND_DEPTH_STENCIL, 0)) {
334            formats[count++] = fmt[i];
335            break;
336         }
337      }
338
339      fmt += n;
340   }
341
342   return count;
343}
344
345/**
346 * Add configs to display and return the next config ID.
347 */
348static EGLint
349egl_g3d_add_configs(_EGLDriver *drv, _EGLDisplay *dpy, EGLint id)
350{
351   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
352   const struct native_config **native_configs;
353   enum pipe_format depth_stencil_formats[8];
354   int num_formats, num_configs, i, j;
355   int preserve_buffer, max_swap_interval;
356
357   native_configs = gdpy->native->get_configs(gdpy->native, &num_configs);
358   if (!num_configs) {
359      if (native_configs)
360         FREE(native_configs);
361      return id;
362   }
363
364   preserve_buffer =
365      gdpy->native->get_param(gdpy->native, NATIVE_PARAM_PRESERVE_BUFFER);
366   max_swap_interval =
367      gdpy->native->get_param(gdpy->native, NATIVE_PARAM_MAX_SWAP_INTERVAL);
368
369   num_formats = egl_g3d_fill_depth_stencil_formats(dpy,
370         depth_stencil_formats);
371
372   for (i = 0; i < num_configs; i++) {
373      for (j = 0; j < num_formats; j++) {
374         struct egl_g3d_config *gconf;
375
376         gconf = CALLOC_STRUCT(egl_g3d_config);
377         if (gconf) {
378            _eglInitConfig(&gconf->base, dpy, id);
379            if (!egl_g3d_init_config(drv, dpy, &gconf->base,
380                     native_configs[i], depth_stencil_formats[j],
381                     preserve_buffer, max_swap_interval)) {
382               FREE(gconf);
383               break;
384            }
385
386            _eglLinkConfig(&gconf->base);
387            id++;
388         }
389      }
390   }
391
392   FREE(native_configs);
393   return id;
394}
395
396static void
397egl_g3d_invalid_surface(struct native_display *ndpy,
398                        struct native_surface *nsurf,
399                        unsigned int seq_num)
400{
401   /* XXX not thread safe? */
402   struct egl_g3d_surface *gsurf = egl_g3d_surface(nsurf->user_data);
403   struct egl_g3d_context *gctx;
404
405   /*
406    * Some functions such as egl_g3d_copy_buffers create a temporary native
407    * surface.  There is no gsurf associated with it.
408    */
409   gctx = (gsurf) ? egl_g3d_context(gsurf->base.CurrentContext) : NULL;
410   if (gctx)
411      gctx->stctxi->notify_invalid_framebuffer(gctx->stctxi, gsurf->stfbi);
412}
413
414static struct pipe_screen *
415egl_g3d_new_drm_screen(struct native_display *ndpy, const char *name, int fd)
416{
417   _EGLDisplay *dpy = (_EGLDisplay *) ndpy->user_data;
418   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
419   return gdpy->loader->create_drm_screen(name, fd);
420}
421
422static struct pipe_screen *
423egl_g3d_new_sw_screen(struct native_display *ndpy, struct sw_winsys *ws)
424{
425   _EGLDisplay *dpy = (_EGLDisplay *) ndpy->user_data;
426   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
427   return gdpy->loader->create_sw_screen(ws);
428}
429
430static struct native_event_handler egl_g3d_native_event_handler = {
431   egl_g3d_invalid_surface,
432   egl_g3d_new_drm_screen,
433   egl_g3d_new_sw_screen
434};
435
436static void
437egl_g3d_free_config(void *conf)
438{
439   struct egl_g3d_config *gconf = egl_g3d_config((_EGLConfig *) conf);
440   FREE(gconf);
441}
442
443static void
444egl_g3d_free_screen(void *scr)
445{
446#ifdef EGL_MESA_screen_surface
447   struct egl_g3d_screen *gscr = egl_g3d_screen((_EGLScreen *) scr);
448   FREE(gscr->native_modes);
449   FREE(gscr);
450#endif
451}
452
453static EGLBoolean
454egl_g3d_terminate(_EGLDriver *drv, _EGLDisplay *dpy)
455{
456   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
457
458   _eglReleaseDisplayResources(drv, dpy);
459
460   if (gdpy->pipe)
461      gdpy->pipe->destroy(gdpy->pipe);
462
463   if (dpy->Configs) {
464      _eglDestroyArray(dpy->Configs, egl_g3d_free_config);
465      dpy->Configs = NULL;
466   }
467   if (dpy->Screens) {
468      _eglDestroyArray(dpy->Screens, egl_g3d_free_screen);
469      dpy->Screens = NULL;
470   }
471
472   _eglCleanupDisplay(dpy);
473
474   if (gdpy->smapi)
475      egl_g3d_destroy_st_manager(gdpy->smapi);
476
477   if (gdpy->native)
478      gdpy->native->destroy(gdpy->native);
479
480   FREE(gdpy);
481   dpy->DriverData = NULL;
482
483   return EGL_TRUE;
484}
485
486static EGLBoolean
487egl_g3d_initialize(_EGLDriver *drv, _EGLDisplay *dpy,
488                   EGLint *major, EGLint *minor)
489{
490   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
491   struct egl_g3d_display *gdpy;
492   const struct native_platform *nplat;
493
494   nplat = egl_g3d_get_platform(drv, dpy->Platform);
495   if (!nplat)
496      return EGL_FALSE;
497
498   gdpy = CALLOC_STRUCT(egl_g3d_display);
499   if (!gdpy) {
500      _eglError(EGL_BAD_ALLOC, "eglInitialize");
501      goto fail;
502   }
503   gdpy->loader = gdrv->loader;
504   dpy->DriverData = gdpy;
505
506   _eglLog(_EGL_INFO, "use %s for display %p", nplat->name, dpy->PlatformDisplay);
507   gdpy->native = nplat->create_display(dpy->PlatformDisplay,
508         &egl_g3d_native_event_handler, (void *) dpy);
509   if (!gdpy->native) {
510      _eglError(EGL_NOT_INITIALIZED, "eglInitialize(no usable display)");
511      goto fail;
512   }
513
514   if (gdpy->loader->profile_masks[ST_API_OPENGL] & ST_PROFILE_DEFAULT_MASK)
515      dpy->ClientAPIsMask |= EGL_OPENGL_BIT;
516   if (gdpy->loader->profile_masks[ST_API_OPENGL] & ST_PROFILE_OPENGL_ES1_MASK)
517      dpy->ClientAPIsMask |= EGL_OPENGL_ES_BIT;
518   if (gdpy->loader->profile_masks[ST_API_OPENGL] & ST_PROFILE_OPENGL_ES2_MASK)
519      dpy->ClientAPIsMask |= EGL_OPENGL_ES2_BIT;
520   if (gdpy->loader->profile_masks[ST_API_OPENVG] & ST_PROFILE_DEFAULT_MASK)
521      dpy->ClientAPIsMask |= EGL_OPENVG_BIT;
522
523   gdpy->smapi = egl_g3d_create_st_manager(dpy);
524   if (!gdpy->smapi) {
525      _eglError(EGL_NOT_INITIALIZED,
526            "eglInitialize(failed to create st manager)");
527      goto fail;
528   }
529
530#ifdef EGL_MESA_screen_surface
531   /* enable MESA_screen_surface before adding (and validating) configs */
532   if (gdpy->native->modeset) {
533      dpy->Extensions.MESA_screen_surface = EGL_TRUE;
534      egl_g3d_add_screens(drv, dpy);
535   }
536#endif
537
538   dpy->Extensions.KHR_image_base = EGL_TRUE;
539   if (gdpy->native->get_param(gdpy->native, NATIVE_PARAM_USE_NATIVE_BUFFER))
540      dpy->Extensions.KHR_image_pixmap = EGL_TRUE;
541
542   dpy->Extensions.KHR_reusable_sync = EGL_TRUE;
543   dpy->Extensions.KHR_fence_sync = EGL_TRUE;
544
545   dpy->Extensions.KHR_surfaceless_gles1 = EGL_TRUE;
546   dpy->Extensions.KHR_surfaceless_gles2 = EGL_TRUE;
547   dpy->Extensions.KHR_surfaceless_opengl = EGL_TRUE;
548
549   if (dpy->Platform == _EGL_PLATFORM_DRM) {
550      dpy->Extensions.MESA_drm_display = EGL_TRUE;
551      if (gdpy->native->buffer)
552         dpy->Extensions.MESA_drm_image = EGL_TRUE;
553   }
554
555   if (egl_g3d_add_configs(drv, dpy, 1) == 1) {
556      _eglError(EGL_NOT_INITIALIZED, "eglInitialize(unable to add configs)");
557      goto fail;
558   }
559
560   *major = 1;
561   *minor = 4;
562
563   return EGL_TRUE;
564
565fail:
566   if (gdpy)
567      egl_g3d_terminate(drv, dpy);
568   return EGL_FALSE;
569}
570
571static _EGLProc
572egl_g3d_get_proc_address(_EGLDriver *drv, const char *procname)
573{
574   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
575   struct st_api *stapi = NULL;
576
577   if (procname && procname[0] == 'v' && procname[1] == 'g')
578      stapi = gdrv->loader->get_st_api(ST_API_OPENVG);
579   else if (procname && procname[0] == 'g' && procname[1] == 'l')
580      stapi = gdrv->loader->get_st_api(ST_API_OPENGL);
581
582   return (_EGLProc) ((stapi) ?
583         stapi->get_proc_address(stapi, procname) : NULL);
584}
585
586static EGLint
587egl_g3d_probe(_EGLDriver *drv, _EGLDisplay *dpy)
588{
589   return (egl_g3d_get_platform(drv, dpy->Platform)) ? 90 : 0;
590}
591
592_EGLDriver *
593egl_g3d_create_driver(const struct egl_g3d_loader *loader)
594{
595   struct egl_g3d_driver *gdrv;
596
597   gdrv = CALLOC_STRUCT(egl_g3d_driver);
598   if (!gdrv)
599      return NULL;
600
601   gdrv->loader = loader;
602
603   egl_g3d_init_driver_api(&gdrv->base);
604   gdrv->base.API.Initialize = egl_g3d_initialize;
605   gdrv->base.API.Terminate = egl_g3d_terminate;
606   gdrv->base.API.GetProcAddress = egl_g3d_get_proc_address;
607
608   gdrv->base.Probe = egl_g3d_probe;
609
610   /* to be filled by the caller */
611   gdrv->base.Name = NULL;
612   gdrv->base.Unload = NULL;
613
614   return &gdrv->base;
615}
616
617void
618egl_g3d_destroy_driver(_EGLDriver *drv)
619{
620   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
621   FREE(gdrv);
622}
623