egl_g3d.c revision e32ac5b8a963202dcdfb91354f77979765083000 
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{
161   uint rgba[4], depth_stencil[2], buffer_size;
162   EGLint surface_type;
163   EGLint i;
164
165   /* get the color and depth/stencil component sizes */
166   assert(nconf->color_format != PIPE_FORMAT_NONE);
167   buffer_size = 0;
168   for (i = 0; i < 4; i++) {
169      rgba[i] = util_format_get_component_bits(nconf->color_format,
170            UTIL_FORMAT_COLORSPACE_RGB, i);
171      buffer_size += rgba[i];
172   }
173   for (i = 0; i < 2; i++) {
174      if (depth_stencil_format != PIPE_FORMAT_NONE) {
175         depth_stencil[i] =
176            util_format_get_component_bits(depth_stencil_format,
177               UTIL_FORMAT_COLORSPACE_ZS, i);
178      }
179      else {
180         depth_stencil[i] = 0;
181      }
182   }
183
184   surface_type = 0x0;
185   if (nconf->window_bit)
186      surface_type |= EGL_WINDOW_BIT;
187   if (nconf->pixmap_bit)
188      surface_type |= EGL_PIXMAP_BIT;
189#ifdef EGL_MESA_screen_surface
190   if (nconf->scanout_bit)
191      surface_type |= EGL_SCREEN_BIT_MESA;
192#endif
193
194   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_LEFT))
195      surface_type |= EGL_PBUFFER_BIT;
196
197   conf->Conformant = api_mask;
198   conf->RenderableType = api_mask;
199
200   conf->RedSize = rgba[0];
201   conf->GreenSize = rgba[1];
202   conf->BlueSize = rgba[2];
203   conf->AlphaSize = rgba[3];
204   conf->BufferSize = buffer_size;
205
206   conf->DepthSize = depth_stencil[0];
207   conf->StencilSize = depth_stencil[1];
208
209   conf->SurfaceType = surface_type;
210
211   conf->NativeRenderable = EGL_TRUE;
212   if (surface_type & EGL_WINDOW_BIT) {
213      conf->NativeVisualID = nconf->native_visual_id;
214      conf->NativeVisualType = nconf->native_visual_type;
215   }
216
217   if (surface_type & EGL_PBUFFER_BIT) {
218      conf->BindToTextureRGB = EGL_TRUE;
219      if (rgba[3])
220         conf->BindToTextureRGBA = EGL_TRUE;
221
222      conf->MaxPbufferWidth = 4096;
223      conf->MaxPbufferHeight = 4096;
224      conf->MaxPbufferPixels = 4096 * 4096;
225   }
226
227   conf->Level = nconf->level;
228   conf->Samples = nconf->samples;
229   conf->SampleBuffers = 0;
230
231   if (nconf->slow_config)
232      conf->ConfigCaveat = EGL_SLOW_CONFIG;
233
234   if (nconf->transparent_rgb) {
235      conf->TransparentType = EGL_TRANSPARENT_RGB;
236      conf->TransparentRedValue = nconf->transparent_rgb_values[0];
237      conf->TransparentGreenValue = nconf->transparent_rgb_values[1];
238      conf->TransparentBlueValue = nconf->transparent_rgb_values[2];
239   }
240
241   return _eglValidateConfig(conf, EGL_FALSE);
242}
243
244/**
245 * Initialize an EGL config from the native config.
246 */
247static EGLBoolean
248egl_g3d_init_config(_EGLDriver *drv, _EGLDisplay *dpy,
249                    _EGLConfig *conf, const struct native_config *nconf,
250                    enum pipe_format depth_stencil_format)
251{
252   struct egl_g3d_config *gconf = egl_g3d_config(conf);
253   EGLint buffer_mask, api_mask;
254   EGLBoolean valid;
255
256   /* skip single-buffered configs */
257   if (!(nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_LEFT)))
258      return EGL_FALSE;
259
260   buffer_mask = 0x0;
261   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_FRONT_LEFT))
262      buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
263   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_LEFT))
264      buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
265   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_FRONT_RIGHT))
266      buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
267   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_RIGHT))
268      buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
269
270   gconf->stvis.buffer_mask = buffer_mask;
271   gconf->stvis.color_format = nconf->color_format;
272   gconf->stvis.depth_stencil_format = depth_stencil_format;
273   gconf->stvis.accum_format = PIPE_FORMAT_NONE;
274   gconf->stvis.samples = nconf->samples;
275
276   gconf->stvis.render_buffer = (buffer_mask & ST_ATTACHMENT_BACK_LEFT_MASK) ?
277      ST_ATTACHMENT_BACK_LEFT : ST_ATTACHMENT_FRONT_LEFT;
278
279   api_mask = dpy->ClientAPIsMask;
280   /* this is required by EGL, not by OpenGL ES */
281   if (nconf->window_bit &&
282       gconf->stvis.render_buffer != ST_ATTACHMENT_BACK_LEFT)
283      api_mask &= ~(EGL_OPENGL_ES_BIT | EGL_OPENGL_ES2_BIT);
284
285   if (!api_mask) {
286      _eglLog(_EGL_DEBUG, "no state tracker supports config 0x%x",
287            nconf->native_visual_id);
288   }
289
290   valid = init_config_attributes(&gconf->base,
291         nconf, api_mask, depth_stencil_format);
292   if (!valid) {
293      _eglLog(_EGL_DEBUG, "skip invalid config 0x%x", nconf->native_visual_id);
294      return EGL_FALSE;
295   }
296
297   gconf->native = nconf;
298
299   return EGL_TRUE;
300}
301
302/**
303 * Get all interested depth/stencil formats of a display.
304 */
305static EGLint
306egl_g3d_fill_depth_stencil_formats(_EGLDisplay *dpy,
307                                   enum pipe_format formats[8])
308{
309   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
310   struct pipe_screen *screen = gdpy->native->screen;
311   const EGLint candidates[] = {
312      1, PIPE_FORMAT_Z16_UNORM,
313      1, PIPE_FORMAT_Z32_UNORM,
314      2, PIPE_FORMAT_Z24_UNORM_S8_USCALED, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
315      2, PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
316      0
317   };
318   const EGLint *fmt = candidates;
319   EGLint count;
320
321   count = 0;
322   formats[count++] = PIPE_FORMAT_NONE;
323
324   while (*fmt) {
325      EGLint i, n = *fmt++;
326
327      /* pick the first supported format */
328      for (i = 0; i < n; i++) {
329         if (screen->is_format_supported(screen, fmt[i],
330                  PIPE_TEXTURE_2D, 0, PIPE_BIND_DEPTH_STENCIL, 0)) {
331            formats[count++] = fmt[i];
332            break;
333         }
334      }
335
336      fmt += n;
337   }
338
339   return count;
340}
341
342/**
343 * Add configs to display and return the next config ID.
344 */
345static EGLint
346egl_g3d_add_configs(_EGLDriver *drv, _EGLDisplay *dpy, EGLint id)
347{
348   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
349   const struct native_config **native_configs;
350   enum pipe_format depth_stencil_formats[8];
351   int num_formats, num_configs, i, j;
352
353   native_configs = gdpy->native->get_configs(gdpy->native, &num_configs);
354   if (!num_configs) {
355      if (native_configs)
356         FREE(native_configs);
357      return id;
358   }
359
360   num_formats = egl_g3d_fill_depth_stencil_formats(dpy,
361         depth_stencil_formats);
362
363   for (i = 0; i < num_configs; i++) {
364      for (j = 0; j < num_formats; j++) {
365         struct egl_g3d_config *gconf;
366
367         gconf = CALLOC_STRUCT(egl_g3d_config);
368         if (gconf) {
369            _eglInitConfig(&gconf->base, dpy, id);
370            if (!egl_g3d_init_config(drv, dpy, &gconf->base,
371                     native_configs[i], depth_stencil_formats[j])) {
372               FREE(gconf);
373               break;
374            }
375
376            _eglLinkConfig(&gconf->base);
377            id++;
378         }
379      }
380   }
381
382   FREE(native_configs);
383   return id;
384}
385
386static void
387egl_g3d_invalid_surface(struct native_display *ndpy,
388                        struct native_surface *nsurf,
389                        unsigned int seq_num)
390{
391   /* XXX not thread safe? */
392   struct egl_g3d_surface *gsurf = egl_g3d_surface(nsurf->user_data);
393   struct egl_g3d_context *gctx;
394
395   /*
396    * Some functions such as egl_g3d_copy_buffers create a temporary native
397    * surface.  There is no gsurf associated with it.
398    */
399   gctx = (gsurf) ? egl_g3d_context(gsurf->base.CurrentContext) : NULL;
400   if (gctx)
401      gctx->stctxi->notify_invalid_framebuffer(gctx->stctxi, gsurf->stfbi);
402}
403
404static struct pipe_screen *
405egl_g3d_new_drm_screen(struct native_display *ndpy, const char *name, int fd)
406{
407   _EGLDisplay *dpy = (_EGLDisplay *) ndpy->user_data;
408   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
409   return gdpy->loader->create_drm_screen(name, fd);
410}
411
412static struct pipe_screen *
413egl_g3d_new_sw_screen(struct native_display *ndpy, struct sw_winsys *ws)
414{
415   _EGLDisplay *dpy = (_EGLDisplay *) ndpy->user_data;
416   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
417   return gdpy->loader->create_sw_screen(ws);
418}
419
420static struct native_event_handler egl_g3d_native_event_handler = {
421   egl_g3d_invalid_surface,
422   egl_g3d_new_drm_screen,
423   egl_g3d_new_sw_screen
424};
425
426static void
427egl_g3d_free_config(void *conf)
428{
429   struct egl_g3d_config *gconf = egl_g3d_config((_EGLConfig *) conf);
430   FREE(gconf);
431}
432
433static void
434egl_g3d_free_screen(void *scr)
435{
436#ifdef EGL_MESA_screen_surface
437   struct egl_g3d_screen *gscr = egl_g3d_screen((_EGLScreen *) scr);
438   FREE(gscr->native_modes);
439   FREE(gscr);
440#endif
441}
442
443static EGLBoolean
444egl_g3d_terminate(_EGLDriver *drv, _EGLDisplay *dpy)
445{
446   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
447
448   _eglReleaseDisplayResources(drv, dpy);
449
450   if (gdpy->pipe)
451      gdpy->pipe->destroy(gdpy->pipe);
452
453   if (dpy->Configs) {
454      _eglDestroyArray(dpy->Configs, egl_g3d_free_config);
455      dpy->Configs = NULL;
456   }
457   if (dpy->Screens) {
458      _eglDestroyArray(dpy->Screens, egl_g3d_free_screen);
459      dpy->Screens = NULL;
460   }
461
462   _eglCleanupDisplay(dpy);
463
464   if (gdpy->smapi)
465      egl_g3d_destroy_st_manager(gdpy->smapi);
466
467   if (gdpy->native)
468      gdpy->native->destroy(gdpy->native);
469
470   FREE(gdpy);
471   dpy->DriverData = NULL;
472
473   return EGL_TRUE;
474}
475
476static EGLBoolean
477egl_g3d_initialize(_EGLDriver *drv, _EGLDisplay *dpy,
478                   EGLint *major, EGLint *minor)
479{
480   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
481   struct egl_g3d_display *gdpy;
482   const struct native_platform *nplat;
483
484   nplat = egl_g3d_get_platform(drv, dpy->Platform);
485   if (!nplat)
486      return EGL_FALSE;
487
488   gdpy = CALLOC_STRUCT(egl_g3d_display);
489   if (!gdpy) {
490      _eglError(EGL_BAD_ALLOC, "eglInitialize");
491      goto fail;
492   }
493   gdpy->loader = gdrv->loader;
494   dpy->DriverData = gdpy;
495
496   _eglLog(_EGL_INFO, "use %s for display %p", nplat->name, dpy->PlatformDisplay);
497   gdpy->native = nplat->create_display(dpy->PlatformDisplay,
498         &egl_g3d_native_event_handler, (void *) dpy);
499   if (!gdpy->native) {
500      _eglError(EGL_NOT_INITIALIZED, "eglInitialize(no usable display)");
501      goto fail;
502   }
503
504   if (gdpy->loader->profile_masks[ST_API_OPENGL] & ST_PROFILE_DEFAULT_MASK)
505      dpy->ClientAPIsMask |= EGL_OPENGL_BIT;
506   if (gdpy->loader->profile_masks[ST_API_OPENGL] & ST_PROFILE_OPENGL_ES1_MASK)
507      dpy->ClientAPIsMask |= EGL_OPENGL_ES_BIT;
508   if (gdpy->loader->profile_masks[ST_API_OPENGL] & ST_PROFILE_OPENGL_ES2_MASK)
509      dpy->ClientAPIsMask |= EGL_OPENGL_ES2_BIT;
510   if (gdpy->loader->profile_masks[ST_API_OPENVG] & ST_PROFILE_DEFAULT_MASK)
511      dpy->ClientAPIsMask |= EGL_OPENVG_BIT;
512
513   gdpy->smapi = egl_g3d_create_st_manager(dpy);
514   if (!gdpy->smapi) {
515      _eglError(EGL_NOT_INITIALIZED,
516            "eglInitialize(failed to create st manager)");
517      goto fail;
518   }
519
520#ifdef EGL_MESA_screen_surface
521   /* enable MESA_screen_surface before adding (and validating) configs */
522   if (gdpy->native->modeset) {
523      dpy->Extensions.MESA_screen_surface = EGL_TRUE;
524      egl_g3d_add_screens(drv, dpy);
525   }
526#endif
527
528   dpy->Extensions.KHR_image_base = EGL_TRUE;
529   if (gdpy->native->get_param(gdpy->native, NATIVE_PARAM_USE_NATIVE_BUFFER))
530      dpy->Extensions.KHR_image_pixmap = EGL_TRUE;
531
532   dpy->Extensions.KHR_reusable_sync = EGL_TRUE;
533   dpy->Extensions.KHR_fence_sync = EGL_TRUE;
534
535   dpy->Extensions.KHR_surfaceless_gles1 = EGL_TRUE;
536   dpy->Extensions.KHR_surfaceless_gles2 = EGL_TRUE;
537   dpy->Extensions.KHR_surfaceless_opengl = EGL_TRUE;
538
539   if (dpy->Platform == _EGL_PLATFORM_DRM) {
540      dpy->Extensions.MESA_drm_display = EGL_TRUE;
541      dpy->Extensions.MESA_drm_image = EGL_TRUE;
542   }
543
544   if (egl_g3d_add_configs(drv, dpy, 1) == 1) {
545      _eglError(EGL_NOT_INITIALIZED, "eglInitialize(unable to add configs)");
546      goto fail;
547   }
548
549   *major = 1;
550   *minor = 4;
551
552   return EGL_TRUE;
553
554fail:
555   if (gdpy)
556      egl_g3d_terminate(drv, dpy);
557   return EGL_FALSE;
558}
559
560static _EGLProc
561egl_g3d_get_proc_address(_EGLDriver *drv, const char *procname)
562{
563   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
564   struct st_api *stapi = NULL;
565
566   if (procname && procname[0] == 'v' && procname[1] == 'g')
567      stapi = gdrv->loader->get_st_api(ST_API_OPENVG);
568   else if (procname && procname[0] == 'g' && procname[1] == 'l')
569      stapi = gdrv->loader->get_st_api(ST_API_OPENGL);
570
571   return (_EGLProc) ((stapi) ?
572         stapi->get_proc_address(stapi, procname) : NULL);
573}
574
575static EGLint
576egl_g3d_probe(_EGLDriver *drv, _EGLDisplay *dpy)
577{
578   return (egl_g3d_get_platform(drv, dpy->Platform)) ? 90 : 0;
579}
580
581_EGLDriver *
582egl_g3d_create_driver(const struct egl_g3d_loader *loader)
583{
584   struct egl_g3d_driver *gdrv;
585
586   gdrv = CALLOC_STRUCT(egl_g3d_driver);
587   if (!gdrv)
588      return NULL;
589
590   gdrv->loader = loader;
591
592   egl_g3d_init_driver_api(&gdrv->base);
593   gdrv->base.API.Initialize = egl_g3d_initialize;
594   gdrv->base.API.Terminate = egl_g3d_terminate;
595   gdrv->base.API.GetProcAddress = egl_g3d_get_proc_address;
596
597   gdrv->base.Probe = egl_g3d_probe;
598
599   /* to be filled by the caller */
600   gdrv->base.Name = NULL;
601   gdrv->base.Unload = NULL;
602
603   return &gdrv->base;
604}
605
606void
607egl_g3d_destroy_driver(_EGLDriver *drv)
608{
609   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
610   FREE(gdrv);
611}
612