egl_g3d_api.c revision 18bc427adecd7ecd728adc03ed73bb07878c0e8f 
1/*
2 * Mesa 3-D graphics library
3 * Version:  7.9
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_inlines.h"
33#include "util/u_box.h"
34
35#include "egl_g3d.h"
36#include "egl_g3d_api.h"
37#include "egl_g3d_image.h"
38#include "egl_g3d_sync.h"
39#include "egl_g3d_st.h"
40#include "egl_g3d_loader.h"
41#include "native.h"
42
43/**
44 * Return the state tracker for the given context.
45 */
46static struct st_api *
47egl_g3d_choose_st(_EGLDriver *drv, _EGLContext *ctx,
48                  enum st_profile_type *profile)
49{
50   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
51   struct st_api *stapi;
52   EGLint api = -1;
53
54   *profile = ST_PROFILE_DEFAULT;
55
56   switch (ctx->ClientAPI) {
57   case EGL_OPENGL_ES_API:
58      switch (ctx->ClientVersion) {
59      case 1:
60         api = ST_API_OPENGL;
61         *profile = ST_PROFILE_OPENGL_ES1;
62         break;
63      case 2:
64         api = ST_API_OPENGL;
65         *profile = ST_PROFILE_OPENGL_ES2;
66         break;
67      default:
68         _eglLog(_EGL_WARNING, "unknown client version %d",
69               ctx->ClientVersion);
70         break;
71      }
72      break;
73   case EGL_OPENVG_API:
74      api = ST_API_OPENVG;
75      break;
76   case EGL_OPENGL_API:
77      api = ST_API_OPENGL;
78      break;
79   default:
80      _eglLog(_EGL_WARNING, "unknown client API 0x%04x", ctx->ClientAPI);
81      break;
82   }
83
84   switch (api) {
85   case ST_API_OPENGL:
86      stapi = gdrv->loader->guess_gl_api(*profile);
87      break;
88   case ST_API_OPENVG:
89      stapi = gdrv->loader->get_st_api(api);
90      break;
91   default:
92      stapi = NULL;
93      break;
94   }
95   if (stapi && !(stapi->profile_mask & (1 << *profile)))
96      stapi = NULL;
97
98   return stapi;
99}
100
101static int
102egl_g3d_compare_config(const _EGLConfig *conf1, const _EGLConfig *conf2,
103                       void *priv_data)
104{
105   const _EGLConfig *criteria = (const _EGLConfig *) priv_data;
106
107   /* EGL_NATIVE_VISUAL_TYPE ignored? */
108   return _eglCompareConfigs(conf1, conf2, criteria, EGL_TRUE);
109}
110
111static EGLBoolean
112egl_g3d_match_config(const _EGLConfig *conf, const _EGLConfig *criteria)
113{
114   if (!_eglMatchConfig(conf, criteria))
115      return EGL_FALSE;
116
117   if (criteria->MatchNativePixmap != EGL_NONE &&
118       criteria->MatchNativePixmap != EGL_DONT_CARE) {
119      struct egl_g3d_display *gdpy = egl_g3d_display(conf->Display);
120      struct egl_g3d_config *gconf = egl_g3d_config(conf);
121      EGLNativePixmapType pix =
122         (EGLNativePixmapType) criteria->MatchNativePixmap;
123
124      if (!gdpy->native->is_pixmap_supported(gdpy->native, pix, gconf->native))
125         return EGL_FALSE;
126   }
127
128   return EGL_TRUE;
129}
130
131static EGLBoolean
132egl_g3d_choose_config(_EGLDriver *drv, _EGLDisplay *dpy, const EGLint *attribs,
133                      EGLConfig *configs, EGLint size, EGLint *num_configs)
134{
135   _EGLConfig **tmp_configs, criteria;
136   EGLint tmp_size, i;
137
138   if (!num_configs)
139      return _eglError(EGL_BAD_PARAMETER, "eglChooseConfigs");
140
141   if (!_eglParseConfigAttribList(&criteria, dpy, attribs))
142      return _eglError(EGL_BAD_ATTRIBUTE, "eglChooseConfig");
143
144   /* get the number of matched configs */
145   tmp_size = _eglFilterArray(dpy->Configs, NULL, 0,
146         (_EGLArrayForEach) egl_g3d_match_config, (void *) &criteria);
147   if (!tmp_size) {
148      *num_configs = tmp_size;
149      return EGL_TRUE;
150   }
151
152   tmp_configs = MALLOC(sizeof(tmp_configs[0]) * tmp_size);
153   if (!tmp_configs)
154      return _eglError(EGL_BAD_ALLOC, "eglChooseConfig(out of memory)");
155
156   /* get the matched configs */
157   _eglFilterArray(dpy->Configs, (void **) tmp_configs, tmp_size,
158         (_EGLArrayForEach) egl_g3d_match_config, (void *) &criteria);
159
160   /* perform sorting of configs */
161   if (tmp_configs && tmp_size) {
162      _eglSortConfigs((const _EGLConfig **) tmp_configs, tmp_size,
163            egl_g3d_compare_config, (void *) &criteria);
164      size = MIN2(tmp_size, size);
165      for (i = 0; i < size; i++)
166         configs[i] = _eglGetConfigHandle(tmp_configs[i]);
167   }
168
169   FREE(tmp_configs);
170
171   *num_configs = size;
172
173   return EGL_TRUE;
174}
175
176static _EGLContext *
177egl_g3d_create_context(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
178                       _EGLContext *share, const EGLint *attribs)
179{
180   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
181   struct egl_g3d_context *gshare = egl_g3d_context(share);
182   struct egl_g3d_config *gconf = egl_g3d_config(conf);
183   struct egl_g3d_context *gctx;
184   struct st_context_attribs stattribs;
185
186   gctx = CALLOC_STRUCT(egl_g3d_context);
187   if (!gctx) {
188      _eglError(EGL_BAD_ALLOC, "eglCreateContext");
189      return NULL;
190   }
191
192   if (!_eglInitContext(&gctx->base, dpy, conf, attribs)) {
193      FREE(gctx);
194      return NULL;
195   }
196
197   memset(&stattribs, 0, sizeof(stattribs));
198   if (gconf)
199      stattribs.visual = gconf->stvis;
200
201   gctx->stapi = egl_g3d_choose_st(drv, &gctx->base, &stattribs.profile);
202   if (!gctx->stapi) {
203      FREE(gctx);
204      return NULL;
205   }
206
207   gctx->stctxi = gctx->stapi->create_context(gctx->stapi, gdpy->smapi,
208         &stattribs, (gshare) ? gshare->stctxi : NULL);
209   if (!gctx->stctxi) {
210      FREE(gctx);
211      return NULL;
212   }
213
214   gctx->stctxi->st_manager_private = (void *) &gctx->base;
215
216   return &gctx->base;
217}
218
219/**
220 * Destroy a context.
221 */
222static void
223destroy_context(_EGLDisplay *dpy, _EGLContext *ctx)
224{
225   struct egl_g3d_context *gctx = egl_g3d_context(ctx);
226
227   /* FIXME a context might live longer than its display */
228   if (!dpy->Initialized)
229      _eglLog(_EGL_FATAL, "destroy a context with an unitialized display");
230
231   gctx->stctxi->destroy(gctx->stctxi);
232
233   FREE(gctx);
234}
235
236static EGLBoolean
237egl_g3d_destroy_context(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx)
238{
239   if (_eglPutContext(ctx))
240      destroy_context(dpy, ctx);
241   return EGL_TRUE;
242}
243
244struct egl_g3d_create_surface_arg {
245   EGLint type;
246   union {
247      EGLNativeWindowType win;
248      EGLNativePixmapType pix;
249   } u;
250};
251
252static _EGLSurface *
253egl_g3d_create_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
254                       struct egl_g3d_create_surface_arg *arg,
255                       const EGLint *attribs)
256{
257   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
258   struct egl_g3d_config *gconf = egl_g3d_config(conf);
259   struct egl_g3d_surface *gsurf;
260   struct native_surface *nsurf;
261   const char *err;
262
263   switch (arg->type) {
264   case EGL_WINDOW_BIT:
265      err = "eglCreateWindowSurface";
266      break;
267   case EGL_PIXMAP_BIT:
268      err = "eglCreatePixmapSurface";
269      break;
270#ifdef EGL_MESA_screen_surface
271   case EGL_SCREEN_BIT_MESA:
272      err = "eglCreateScreenSurface";
273      break;
274#endif
275   default:
276      err = "eglCreateUnknownSurface";
277      break;
278   }
279
280   gsurf = CALLOC_STRUCT(egl_g3d_surface);
281   if (!gsurf) {
282      _eglError(EGL_BAD_ALLOC, err);
283      return NULL;
284   }
285
286   if (!_eglInitSurface(&gsurf->base, dpy, arg->type, conf, attribs)) {
287      FREE(gsurf);
288      return NULL;
289   }
290
291   /* create the native surface */
292   switch (arg->type) {
293   case EGL_WINDOW_BIT:
294      nsurf = gdpy->native->create_window_surface(gdpy->native,
295            arg->u.win, gconf->native);
296      break;
297   case EGL_PIXMAP_BIT:
298      nsurf = gdpy->native->create_pixmap_surface(gdpy->native,
299            arg->u.pix, gconf->native);
300      break;
301#ifdef EGL_MESA_screen_surface
302   case EGL_SCREEN_BIT_MESA:
303      /* prefer back buffer (move to _eglInitSurface?) */
304      gsurf->base.RenderBuffer = EGL_BACK_BUFFER;
305      nsurf = gdpy->native->modeset->create_scanout_surface(gdpy->native,
306            gconf->native, gsurf->base.Width, gsurf->base.Height);
307      break;
308#endif
309   default:
310      nsurf = NULL;
311      break;
312   }
313
314   if (!nsurf) {
315      FREE(gsurf);
316      return NULL;
317   }
318   /* initialize the geometry */
319   if (!nsurf->validate(nsurf, 0x0, &gsurf->sequence_number, NULL,
320            &gsurf->base.Width, &gsurf->base.Height)) {
321      nsurf->destroy(nsurf);
322      FREE(gsurf);
323      return NULL;
324   }
325
326   gsurf->stvis = gconf->stvis;
327   if (gsurf->base.RenderBuffer == EGL_SINGLE_BUFFER &&
328       gconf->stvis.buffer_mask & ST_ATTACHMENT_FRONT_LEFT_MASK)
329      gsurf->stvis.render_buffer = ST_ATTACHMENT_FRONT_LEFT;
330
331   gsurf->stfbi = egl_g3d_create_st_framebuffer(&gsurf->base);
332   if (!gsurf->stfbi) {
333      nsurf->destroy(nsurf);
334      FREE(gsurf);
335      return NULL;
336   }
337
338   nsurf->user_data = &gsurf->base;
339   gsurf->native = nsurf;
340
341   return &gsurf->base;
342}
343
344static _EGLSurface *
345egl_g3d_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy,
346                              _EGLConfig *conf, EGLNativeWindowType win,
347                              const EGLint *attribs)
348{
349   struct egl_g3d_create_surface_arg arg;
350
351   memset(&arg, 0, sizeof(arg));
352   arg.type = EGL_WINDOW_BIT;
353   arg.u.win = win;
354
355   return egl_g3d_create_surface(drv, dpy, conf, &arg, attribs);
356}
357
358static _EGLSurface *
359egl_g3d_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy,
360                              _EGLConfig *conf, EGLNativePixmapType pix,
361                              const EGLint *attribs)
362{
363   struct egl_g3d_create_surface_arg arg;
364
365   memset(&arg, 0, sizeof(arg));
366   arg.type = EGL_PIXMAP_BIT;
367   arg.u.pix = pix;
368
369   return egl_g3d_create_surface(drv, dpy, conf, &arg, attribs);
370}
371
372static struct egl_g3d_surface *
373create_pbuffer_surface(_EGLDisplay *dpy, _EGLConfig *conf,
374                       const EGLint *attribs, const char *func)
375{
376   struct egl_g3d_config *gconf = egl_g3d_config(conf);
377   struct egl_g3d_surface *gsurf;
378
379   gsurf = CALLOC_STRUCT(egl_g3d_surface);
380   if (!gsurf) {
381      _eglError(EGL_BAD_ALLOC, func);
382      return NULL;
383   }
384
385   if (!_eglInitSurface(&gsurf->base, dpy, EGL_PBUFFER_BIT, conf, attribs)) {
386      FREE(gsurf);
387      return NULL;
388   }
389
390   gsurf->stvis = gconf->stvis;
391
392   gsurf->stfbi = egl_g3d_create_st_framebuffer(&gsurf->base);
393   if (!gsurf->stfbi) {
394      FREE(gsurf);
395      return NULL;
396   }
397
398   return gsurf;
399}
400
401static _EGLSurface *
402egl_g3d_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy,
403                               _EGLConfig *conf, const EGLint *attribs)
404{
405   struct egl_g3d_surface *gsurf;
406
407   gsurf = create_pbuffer_surface(dpy, conf, attribs,
408         "eglCreatePbufferSurface");
409   if (!gsurf)
410      return NULL;
411
412   gsurf->client_buffer_type = EGL_NONE;
413
414   return &gsurf->base;
415}
416
417static _EGLSurface *
418egl_g3d_create_pbuffer_from_client_buffer(_EGLDriver *drv, _EGLDisplay *dpy,
419                                          EGLenum buftype,
420                                          EGLClientBuffer buffer,
421                                          _EGLConfig *conf,
422                                          const EGLint *attribs)
423{
424   struct egl_g3d_surface *gsurf;
425   struct pipe_resource *ptex = NULL;
426   EGLint pbuffer_attribs[32];
427   EGLint count, i;
428
429   switch (buftype) {
430   case EGL_OPENVG_IMAGE:
431      break;
432   default:
433      _eglError(EGL_BAD_PARAMETER, "eglCreatePbufferFromClientBuffer");
434      return NULL;
435      break;
436   }
437
438   /* parse the attributes first */
439   count = 0;
440   for (i = 0; attribs && attribs[i] != EGL_NONE; i++) {
441      EGLint attr = attribs[i++];
442      EGLint val = attribs[i];
443      EGLint err = EGL_SUCCESS;
444
445      switch (attr) {
446      case EGL_TEXTURE_FORMAT:
447      case EGL_TEXTURE_TARGET:
448      case EGL_MIPMAP_TEXTURE:
449         pbuffer_attribs[count++] = attr;
450         pbuffer_attribs[count++] = val;
451         break;
452      default:
453         err = EGL_BAD_ATTRIBUTE;
454         break;
455      }
456      /* bail out */
457      if (err != EGL_SUCCESS) {
458         _eglError(err, "eglCreatePbufferFromClientBuffer");
459         return NULL;
460      }
461   }
462
463   pbuffer_attribs[count++] = EGL_NONE;
464
465   gsurf = create_pbuffer_surface(dpy, conf, pbuffer_attribs,
466         "eglCreatePbufferFromClientBuffer");
467   if (!gsurf)
468      return NULL;
469
470   gsurf->client_buffer_type = buftype;
471   gsurf->client_buffer = buffer;
472
473   /* validate now so that it fails if the client buffer is invalid */
474   if (!gsurf->stfbi->validate(gsurf->stfbi,
475            &gsurf->stvis.render_buffer, 1, &ptex)) {
476      egl_g3d_destroy_st_framebuffer(gsurf->stfbi);
477      FREE(gsurf);
478      return NULL;
479   }
480   pipe_resource_reference(&ptex, NULL);
481
482   return &gsurf->base;
483}
484
485/**
486 * Destroy a surface.
487 */
488static void
489destroy_surface(_EGLDisplay *dpy, _EGLSurface *surf)
490{
491   struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
492
493   /* FIXME a surface might live longer than its display */
494   if (!dpy->Initialized)
495      _eglLog(_EGL_FATAL, "destroy a surface with an unitialized display");
496
497   pipe_resource_reference(&gsurf->render_texture, NULL);
498   egl_g3d_destroy_st_framebuffer(gsurf->stfbi);
499   if (gsurf->native)
500      gsurf->native->destroy(gsurf->native);
501   FREE(gsurf);
502}
503
504static EGLBoolean
505egl_g3d_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
506{
507   if (_eglPutSurface(surf))
508      destroy_surface(dpy, surf);
509   return EGL_TRUE;
510}
511
512static EGLBoolean
513egl_g3d_make_current(_EGLDriver *drv, _EGLDisplay *dpy,
514                     _EGLSurface *draw, _EGLSurface *read, _EGLContext *ctx)
515{
516   struct egl_g3d_context *gctx = egl_g3d_context(ctx);
517   struct egl_g3d_surface *gdraw = egl_g3d_surface(draw);
518   struct egl_g3d_surface *gread = egl_g3d_surface(read);
519   struct egl_g3d_context *old_gctx;
520   _EGLContext *old_ctx;
521   _EGLSurface *old_draw, *old_read;
522   EGLBoolean ok = EGL_TRUE;
523
524   /* make new bindings */
525   if (!_eglBindContext(ctx, draw, read, &old_ctx, &old_draw, &old_read))
526      return EGL_FALSE;
527
528   old_gctx = egl_g3d_context(old_ctx);
529   if (old_gctx) {
530      /* flush old context */
531      old_gctx->stctxi->flush(old_gctx->stctxi,
532            PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
533   }
534
535   if (gctx) {
536      ok = gctx->stapi->make_current(gctx->stapi, gctx->stctxi,
537            (gdraw) ? gdraw->stfbi : NULL, (gread) ? gread->stfbi : NULL);
538      if (ok) {
539         if (gdraw) {
540            gctx->stctxi->notify_invalid_framebuffer(gctx->stctxi,
541                  gdraw->stfbi);
542
543            if (gdraw->base.Type == EGL_WINDOW_BIT) {
544               gctx->base.WindowRenderBuffer =
545                  (gdraw->stvis.render_buffer == ST_ATTACHMENT_FRONT_LEFT) ?
546                  EGL_SINGLE_BUFFER : EGL_BACK_BUFFER;
547            }
548         }
549         if (gread && gread != gdraw) {
550            gctx->stctxi->notify_invalid_framebuffer(gctx->stctxi,
551                  gread->stfbi);
552         }
553      }
554   }
555   else if (old_gctx) {
556      ok = old_gctx->stapi->make_current(old_gctx->stapi, NULL, NULL, NULL);
557      if (ok)
558         old_gctx->base.WindowRenderBuffer = EGL_NONE;
559   }
560
561   if (ok) {
562      if (_eglPutContext(old_ctx))
563         destroy_context(dpy, old_ctx);
564      if (_eglPutSurface(old_draw))
565         destroy_surface(dpy, old_draw);
566      if (_eglPutSurface(old_read))
567         destroy_surface(dpy, old_read);
568   }
569   else {
570      /* undo the previous _eglBindContext */
571      _eglBindContext(old_ctx, old_draw, old_read, &ctx, &draw, &read);
572      assert(&gctx->base == ctx &&
573             &gdraw->base == draw &&
574             &gread->base == read);
575
576      _eglPutSurface(draw);
577      _eglPutSurface(read);
578      _eglPutContext(ctx);
579
580      _eglPutSurface(old_draw);
581      _eglPutSurface(old_read);
582      _eglPutContext(old_ctx);
583   }
584
585   return ok;
586}
587
588static EGLBoolean
589egl_g3d_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
590{
591   struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
592   _EGLContext *ctx = _eglGetCurrentContext();
593   struct egl_g3d_context *gctx = NULL;
594
595   /* no-op for pixmap or pbuffer surface */
596   if (gsurf->base.Type == EGL_PIXMAP_BIT ||
597       gsurf->base.Type == EGL_PBUFFER_BIT)
598      return EGL_TRUE;
599
600   /* or when the surface is single-buffered */
601   if (gsurf->stvis.render_buffer == ST_ATTACHMENT_FRONT_LEFT)
602      return EGL_TRUE;
603
604   if (ctx && ctx->DrawSurface == surf)
605      gctx = egl_g3d_context(ctx);
606
607   /* flush if the surface is current */
608   if (gctx) {
609      gctx->stctxi->flush(gctx->stctxi,
610            PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
611   }
612
613   return gsurf->native->present(gsurf->native,
614         NATIVE_ATTACHMENT_BACK_LEFT,
615         gsurf->base.SwapBehavior == EGL_BUFFER_PRESERVED,
616         gsurf->base.SwapInterval);
617}
618
619/**
620 * Get the pipe surface of the given attachment of the native surface.
621 */
622static struct pipe_resource *
623get_pipe_resource(struct native_display *ndpy, struct native_surface *nsurf,
624                  enum native_attachment natt)
625{
626   struct pipe_resource *textures[NUM_NATIVE_ATTACHMENTS];
627
628   textures[natt] = NULL;
629   nsurf->validate(nsurf, 1 << natt, NULL, textures, NULL, NULL);
630
631   return textures[natt];
632}
633
634static EGLBoolean
635egl_g3d_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
636                     EGLNativePixmapType target)
637{
638   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
639   struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
640   _EGLContext *ctx = _eglGetCurrentContext();
641   struct native_surface *nsurf;
642   struct pipe_resource *ptex;
643
644   if (!gsurf->render_texture)
645      return EGL_TRUE;
646
647   nsurf = gdpy->native->create_pixmap_surface(gdpy->native, target, NULL);
648   if (!nsurf)
649      return _eglError(EGL_BAD_NATIVE_PIXMAP, "eglCopyBuffers");
650
651   /* flush if the surface is current */
652   if (ctx && ctx->DrawSurface == &gsurf->base) {
653      struct egl_g3d_context *gctx = egl_g3d_context(ctx);
654      gctx->stctxi->flush(gctx->stctxi,
655            PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
656   }
657
658   /* create a pipe context to copy surfaces */
659   if (!gdpy->pipe) {
660      gdpy->pipe =
661         gdpy->native->screen->context_create(gdpy->native->screen, NULL);
662      if (!gdpy->pipe)
663         return EGL_FALSE;
664   }
665
666   ptex = get_pipe_resource(gdpy->native, nsurf, NATIVE_ATTACHMENT_FRONT_LEFT);
667   if (ptex) {
668      struct pipe_resource *psrc = gsurf->render_texture;
669      struct pipe_box src_box;
670      u_box_origin_2d(ptex->width0, ptex->height0, &src_box);
671      if (psrc) {
672         gdpy->pipe->resource_copy_region(gdpy->pipe, ptex, 0, 0, 0, 0,
673               gsurf->render_texture, 0, &src_box);
674         nsurf->present(nsurf, NATIVE_ATTACHMENT_FRONT_LEFT, FALSE, 0);
675      }
676
677      pipe_resource_reference(&ptex, NULL);
678   }
679
680   nsurf->destroy(nsurf);
681
682   return EGL_TRUE;
683}
684
685static EGLBoolean
686egl_g3d_wait_client(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx)
687{
688   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
689   struct egl_g3d_context *gctx = egl_g3d_context(ctx);
690   struct pipe_screen *screen = gdpy->native->screen;
691   struct pipe_fence_handle *fence = NULL;
692
693   gctx->stctxi->flush(gctx->stctxi,
694         PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, &fence);
695   if (fence) {
696      screen->fence_finish(screen, fence, 0);
697      screen->fence_reference(screen, &fence, NULL);
698   }
699
700   return EGL_TRUE;
701}
702
703static EGLBoolean
704egl_g3d_wait_native(_EGLDriver *drv, _EGLDisplay *dpy, EGLint engine)
705{
706   _EGLContext *ctx = _eglGetCurrentContext();
707
708   if (engine != EGL_CORE_NATIVE_ENGINE)
709      return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
710
711   if (ctx && ctx->DrawSurface) {
712      struct egl_g3d_surface *gsurf = egl_g3d_surface(ctx->DrawSurface);
713
714      if (gsurf->native)
715         gsurf->native->wait(gsurf->native);
716   }
717
718   return EGL_TRUE;
719}
720
721static EGLBoolean
722egl_g3d_bind_tex_image(_EGLDriver *drv, _EGLDisplay *dpy,
723                       _EGLSurface *surf, EGLint buffer)
724{
725   struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
726   _EGLContext *es1 = _eglGetAPIContext(EGL_OPENGL_ES_API);
727   struct egl_g3d_context *gctx;
728   enum pipe_format internal_format;
729   enum st_texture_type target;
730
731   if (!gsurf || gsurf->base.Type != EGL_PBUFFER_BIT)
732      return _eglError(EGL_BAD_SURFACE, "eglBindTexImage");
733   if (buffer != EGL_BACK_BUFFER)
734      return _eglError(EGL_BAD_PARAMETER, "eglBindTexImage");
735   if (gsurf->base.BoundToTexture)
736      return _eglError(EGL_BAD_ACCESS, "eglBindTexImage");
737
738   switch (gsurf->base.TextureFormat) {
739   case EGL_TEXTURE_RGB:
740      internal_format = PIPE_FORMAT_R8G8B8_UNORM;
741      break;
742   case EGL_TEXTURE_RGBA:
743      internal_format = PIPE_FORMAT_B8G8R8A8_UNORM;
744      break;
745   default:
746      return _eglError(EGL_BAD_MATCH, "eglBindTexImage");
747   }
748
749   switch (gsurf->base.TextureTarget) {
750   case EGL_TEXTURE_2D:
751      target = ST_TEXTURE_2D;
752      break;
753   default:
754      return _eglError(EGL_BAD_MATCH, "eglBindTexImage");
755   }
756
757   if (!es1)
758      return EGL_TRUE;
759   if (!gsurf->render_texture)
760      return EGL_FALSE;
761
762   /* flush properly if the surface is bound */
763   if (gsurf->base.CurrentContext) {
764      gctx = egl_g3d_context(gsurf->base.CurrentContext);
765      gctx->stctxi->flush(gctx->stctxi,
766            PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
767   }
768
769   gctx = egl_g3d_context(es1);
770   if (gctx->stctxi->teximage) {
771      if (!gctx->stctxi->teximage(gctx->stctxi, target,
772               gsurf->base.MipmapLevel, internal_format,
773               gsurf->render_texture, gsurf->base.MipmapTexture))
774         return EGL_FALSE;
775      gsurf->base.BoundToTexture = EGL_TRUE;
776   }
777
778   return EGL_TRUE;
779}
780
781static EGLBoolean
782egl_g3d_release_tex_image(_EGLDriver *drv, _EGLDisplay *dpy,
783                          _EGLSurface *surf, EGLint buffer)
784{
785   struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
786
787   if (!gsurf || gsurf->base.Type != EGL_PBUFFER_BIT ||
788       !gsurf->base.BoundToTexture)
789      return _eglError(EGL_BAD_SURFACE, "eglReleaseTexImage");
790   if (buffer != EGL_BACK_BUFFER)
791      return _eglError(EGL_BAD_PARAMETER, "eglReleaseTexImage");
792
793   if (gsurf->render_texture) {
794      _EGLContext *ctx = _eglGetAPIContext(EGL_OPENGL_ES_API);
795      struct egl_g3d_context *gctx = egl_g3d_context(ctx);
796
797      /* what if the context the surface binds to is no longer current? */
798      if (gctx) {
799         gctx->stctxi->teximage(gctx->stctxi, ST_TEXTURE_2D,
800               gsurf->base.MipmapLevel, PIPE_FORMAT_NONE, NULL, FALSE);
801      }
802   }
803
804   gsurf->base.BoundToTexture = EGL_FALSE;
805
806   return EGL_TRUE;
807}
808
809#ifdef EGL_MESA_screen_surface
810
811static _EGLSurface *
812egl_g3d_create_screen_surface(_EGLDriver *drv, _EGLDisplay *dpy,
813                              _EGLConfig *conf, const EGLint *attribs)
814{
815   struct egl_g3d_create_surface_arg arg;
816
817   memset(&arg, 0, sizeof(arg));
818   arg.type = EGL_SCREEN_BIT_MESA;
819
820   return egl_g3d_create_surface(drv, dpy, conf, &arg, attribs);
821}
822
823static EGLBoolean
824egl_g3d_show_screen_surface(_EGLDriver *drv, _EGLDisplay *dpy,
825                            _EGLScreen *scr, _EGLSurface *surf,
826                            _EGLMode *mode)
827{
828   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
829   struct egl_g3d_screen *gscr = egl_g3d_screen(scr);
830   struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
831   struct native_surface *nsurf;
832   const struct native_mode *nmode;
833   EGLBoolean changed;
834
835   if (gsurf) {
836      EGLint idx;
837
838      if (!mode)
839         return _eglError(EGL_BAD_MATCH, "eglShowSurfaceMESA");
840      if (gsurf->base.Type != EGL_SCREEN_BIT_MESA)
841         return _eglError(EGL_BAD_SURFACE, "eglShowScreenSurfaceMESA");
842      if (gsurf->base.Width < mode->Width || gsurf->base.Height < mode->Height)
843         return _eglError(EGL_BAD_MATCH,
844               "eglShowSurfaceMESA(surface smaller than mode size)");
845
846      /* find the index of the mode */
847      for (idx = 0; idx < gscr->base.NumModes; idx++)
848         if (mode == &gscr->base.Modes[idx])
849            break;
850      if (idx >= gscr->base.NumModes) {
851         return _eglError(EGL_BAD_MODE_MESA,
852               "eglShowSurfaceMESA(unknown mode)");
853      }
854
855      nsurf = gsurf->native;
856      nmode = gscr->native_modes[idx];
857   }
858   else {
859      if (mode)
860         return _eglError(EGL_BAD_MATCH, "eglShowSurfaceMESA");
861
862      /* disable the screen */
863      nsurf = NULL;
864      nmode = NULL;
865   }
866
867   /* TODO surface panning by CRTC choosing */
868   changed = gdpy->native->modeset->program(gdpy->native, 0, nsurf,
869         gscr->base.OriginX, gscr->base.OriginY, &gscr->native, 1, nmode);
870   if (changed) {
871      gscr->base.CurrentSurface = &gsurf->base;
872      gscr->base.CurrentMode = mode;
873   }
874
875   return changed;
876}
877
878#endif /* EGL_MESA_screen_surface */
879
880void
881egl_g3d_init_driver_api(_EGLDriver *drv)
882{
883   _eglInitDriverFallbacks(drv);
884
885   drv->API.ChooseConfig = egl_g3d_choose_config;
886
887   drv->API.CreateContext = egl_g3d_create_context;
888   drv->API.DestroyContext = egl_g3d_destroy_context;
889   drv->API.CreateWindowSurface = egl_g3d_create_window_surface;
890   drv->API.CreatePixmapSurface = egl_g3d_create_pixmap_surface;
891   drv->API.CreatePbufferSurface = egl_g3d_create_pbuffer_surface;
892   drv->API.CreatePbufferFromClientBuffer = egl_g3d_create_pbuffer_from_client_buffer;
893   drv->API.DestroySurface = egl_g3d_destroy_surface;
894   drv->API.MakeCurrent = egl_g3d_make_current;
895   drv->API.SwapBuffers = egl_g3d_swap_buffers;
896   drv->API.CopyBuffers = egl_g3d_copy_buffers;
897   drv->API.WaitClient = egl_g3d_wait_client;
898   drv->API.WaitNative = egl_g3d_wait_native;
899
900   drv->API.BindTexImage = egl_g3d_bind_tex_image;
901   drv->API.ReleaseTexImage = egl_g3d_release_tex_image;
902
903   drv->API.CreateImageKHR = egl_g3d_create_image;
904   drv->API.DestroyImageKHR = egl_g3d_destroy_image;
905#ifdef EGL_MESA_drm_image
906   drv->API.CreateDRMImageMESA = egl_g3d_create_drm_image;
907   drv->API.ExportDRMImageMESA = egl_g3d_export_drm_image;
908#endif
909
910#ifdef EGL_KHR_reusable_sync
911   drv->API.CreateSyncKHR = egl_g3d_create_sync;
912   drv->API.DestroySyncKHR = egl_g3d_destroy_sync;
913   drv->API.ClientWaitSyncKHR = egl_g3d_client_wait_sync;
914   drv->API.SignalSyncKHR = egl_g3d_signal_sync;
915#endif
916
917#ifdef EGL_MESA_screen_surface
918   drv->API.CreateScreenSurfaceMESA = egl_g3d_create_screen_surface;
919   drv->API.ShowScreenSurfaceMESA = egl_g3d_show_screen_surface;
920#endif
921}
922