summaryrefslogtreecommitdiff
path: root/src/egl/main/eglsurface.c
blob: 3777049ca6dcd6fef307b04dd39c5e3173a36a80 (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
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
/**
 * Surface-related functions.
 */


#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "eglcontext.h"
#include "eglconfig.h"
#include "egldriver.h"
#include "eglglobals.h"
#include "eglhash.h"
#include "egllog.h"
#include "eglsurface.h"


/**
 * Do error check on parameters and initialize the given _EGLSurface object.
 * \return EGL_TRUE if no errors, EGL_FALSE otherwise.
 */
EGLBoolean
_eglInitSurface(_EGLDriver *drv, EGLDisplay dpy,
                _EGLSurface *surf, EGLint type, EGLConfig config,
                const EGLint *attrib_list)
{
   const char *func;
   _EGLConfig *conf;
   EGLint width = 0, height = 0, largest = 0;
   EGLint texFormat = 0, texTarget = 0, mipmapTex = 0;
   EGLint renderBuffer = EGL_BACK_BUFFER;
#ifdef EGL_VERSION_1_2
   EGLint colorspace = EGL_COLORSPACE_sRGB;
   EGLint alphaFormat = EGL_ALPHA_FORMAT_NONPRE;
#endif
   EGLint i;

   switch (type) {
   case EGL_WINDOW_BIT:
      func = "eglCreateWindowSurface";
      break;
   case EGL_PIXMAP_BIT:
      func = "eglCreatePixmapSurface";
      renderBuffer = EGL_SINGLE_BUFFER;
      break;
   case EGL_PBUFFER_BIT:
      func = "eglCreatePBufferSurface";
      break;
   case EGL_SCREEN_BIT_MESA:
      func = "eglCreateScreenSurface";
      renderBuffer = EGL_SINGLE_BUFFER; /* XXX correct? */
      break;
   default:
      _eglLog(_EGL_WARNING, "Bad type in _eglInitSurface");
      return EGL_FALSE;
   }

   conf = _eglLookupConfig(drv, dpy, config);
   if (!conf) {
      _eglError(EGL_BAD_CONFIG, func);
      return EGL_FALSE;
   }

   /*
    * Parse attribute list.  Different kinds of surfaces support different
    * attributes.
    */
   for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) {
      switch (attrib_list[i]) {
      case EGL_WIDTH:
         if (type == EGL_PBUFFER_BIT || type == EGL_SCREEN_BIT_MESA) {
            width = attrib_list[++i];
         }
         else {
            _eglError(EGL_BAD_ATTRIBUTE, func);
            return EGL_FALSE;
         }
         break;
      case EGL_HEIGHT:
         if (type == EGL_PBUFFER_BIT || type == EGL_SCREEN_BIT_MESA) {
            height = attrib_list[++i];
         }
         else {
            _eglError(EGL_BAD_ATTRIBUTE, func);
            return EGL_FALSE;
         }
         break;
      case EGL_LARGEST_PBUFFER:
         if (type == EGL_PBUFFER_BIT) {
            largest = attrib_list[++i];
         }
         else {
            _eglError(EGL_BAD_ATTRIBUTE, func);
            return EGL_FALSE;
         }
         break;
      case EGL_TEXTURE_FORMAT:
         if (type == EGL_PBUFFER_BIT) {
            texFormat = attrib_list[++i];
         }
         else {
            _eglError(EGL_BAD_ATTRIBUTE, func);
            return EGL_FALSE;
         }
         break;
      case EGL_TEXTURE_TARGET:
         if (type == EGL_PBUFFER_BIT) {
            texTarget = attrib_list[++i];
         }
         else {
            _eglError(EGL_BAD_ATTRIBUTE, func);
            return EGL_FALSE;
         }
         break;
      case EGL_MIPMAP_TEXTURE:
         if (type == EGL_PBUFFER_BIT) {
            mipmapTex = attrib_list[++i];
         }
         else {
            _eglError(EGL_BAD_ATTRIBUTE, func);
            return EGL_FALSE;
         }
         break;
#ifdef EGL_VERSION_1_2
      case EGL_RENDER_BUFFER:
         if (type == EGL_WINDOW_BIT) {
            renderBuffer = attrib_list[++i];
            if (renderBuffer != EGL_BACK_BUFFER &&
                renderBuffer != EGL_SINGLE_BUFFER) {
               _eglError(EGL_BAD_ATTRIBUTE, func);
               return EGL_FALSE;
            }
         }
         else {
            _eglError(EGL_BAD_ATTRIBUTE, func);
            return EGL_FALSE;
         }
         break;
      case EGL_COLORSPACE:
         if (type == EGL_WINDOW_BIT ||
             type == EGL_PBUFFER_BIT ||
             type == EGL_PIXMAP_BIT) {
            colorspace = attrib_list[++i];
            if (colorspace != EGL_COLORSPACE_sRGB &&
                colorspace != EGL_COLORSPACE_LINEAR) {
               _eglError(EGL_BAD_ATTRIBUTE, func);
               return EGL_FALSE;
            }
         }
         else {
            _eglError(EGL_BAD_ATTRIBUTE, func);
            return EGL_FALSE;
         }
         break;
      case EGL_ALPHA_FORMAT:
         if (type == EGL_WINDOW_BIT ||
             type == EGL_PBUFFER_BIT ||
             type == EGL_PIXMAP_BIT) {
            alphaFormat = attrib_list[++i];
            if (alphaFormat != EGL_ALPHA_FORMAT_NONPRE &&
                alphaFormat != EGL_ALPHA_FORMAT_PRE) {
               _eglError(EGL_BAD_ATTRIBUTE, func);
               return EGL_FALSE;
            }
         }
         else {
            _eglError(EGL_BAD_ATTRIBUTE, func);
            return EGL_FALSE;
         }
         break;

#endif /* EGL_VERSION_1_2 */
      default:
         _eglError(EGL_BAD_ATTRIBUTE, func);
         return EGL_FALSE;
      }
   }

   if (width < 0 || height < 0) {
      _eglError(EGL_BAD_ATTRIBUTE, func);
      return EGL_FALSE;
   }

   memset(surf, 0, sizeof(_EGLSurface));
   surf->Config = conf;
   surf->Type = type;
   surf->Width = width;
   surf->Height = height;
   surf->TextureFormat = texFormat;
   surf->TextureTarget = texTarget;
   surf->MipmapTexture = mipmapTex;
   surf->MipmapLevel = 0;
   surf->SwapInterval = 0;
#ifdef EGL_VERSION_1_2
   surf->SwapBehavior = EGL_BUFFER_DESTROYED; /* XXX ok? */
   surf->HorizontalResolution = EGL_UNKNOWN; /* set by caller */
   surf->VerticalResolution = EGL_UNKNOWN; /* set by caller */
   surf->AspectRatio = EGL_UNKNOWN; /* set by caller */
   surf->RenderBuffer = renderBuffer;
   surf->AlphaFormat = alphaFormat;
   surf->Colorspace = colorspace;
#endif

   return EGL_TRUE;
}


void
_eglSaveSurface(_EGLSurface *surf)
{
   EGLuint key = _eglHashGenKey(_eglGlobal.Surfaces);
   assert(surf);
   assert(!surf->Handle);
   surf->Handle = (EGLSurface) key;
   assert(surf->Handle);
   _eglHashInsert(_eglGlobal.Surfaces, key, surf);
}


void
_eglRemoveSurface(_EGLSurface *surf)
{
   _eglHashRemove(_eglGlobal.Surfaces, (EGLuint) surf->Handle);
}



/**
 * Return the public handle for an internal _EGLSurface.
 * This is the inverse of _eglLookupSurface().
 */
EGLSurface
_eglGetSurfaceHandle(_EGLSurface *surface)
{
   if (surface)
      return surface->Handle;
   else
      return EGL_NO_SURFACE;
}


/**
 * Return the private _EGLSurface which corresponds to a public EGLSurface
 * handle.
 * This is the inverse of _eglGetSurfaceHandle().
 */
_EGLSurface *
_eglLookupSurface(EGLSurface surf)
{
   _EGLSurface *c = (_EGLSurface *) _eglHashLookup(_eglGlobal.Surfaces,
                                                   (EGLuint) surf);
   return c;
}


_EGLSurface *
_eglGetCurrentSurface(EGLint readdraw)
{
   _EGLContext *ctx = _eglGetCurrentContext();
   if (ctx) {
      switch (readdraw) {
      case EGL_DRAW:
         return ctx->DrawSurface;
      case EGL_READ:
         return ctx->ReadSurface;
      default:
         return NULL;
      }
   }
   return NULL;
}


EGLBoolean
_eglSwapBuffers(_EGLDriver *drv, EGLDisplay dpy, EGLSurface draw)
{
   /* Basically just do error checking here.  Drivers have to do the
    * actual buffer swap.
    */
   _EGLContext *context = _eglGetCurrentContext();
   _EGLSurface *surface = _eglLookupSurface(draw);
   if (context && context->DrawSurface != surface) {
      _eglError(EGL_BAD_SURFACE, "eglSwapBuffers");
      return EGL_FALSE;
   }
   if (surface == NULL) {
      _eglError(EGL_BAD_SURFACE, "eglSwapBuffers");
      return EGL_FALSE;
   }
   return EGL_TRUE;
}


EGLBoolean
_eglCopyBuffers(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface,
                NativePixmapType target)
{
   /* copy surface to native pixmap */
   /* All implementation burdon for this is in the device driver */
   return EGL_FALSE;
}


EGLBoolean
_eglQuerySurface(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surf,
                 EGLint attribute, EGLint *value)
{
   _EGLSurface *surface = _eglLookupSurface(surf);
   if (surface == NULL) {
      _eglError(EGL_BAD_SURFACE, "eglQuerySurface");
      return EGL_FALSE;
   }
   switch (attribute) {
   case EGL_WIDTH:
      *value = surface->Width;
      return EGL_TRUE;
   case EGL_HEIGHT:
      *value = surface->Height;
      return EGL_TRUE;
   case EGL_CONFIG_ID:
      *value = GET_CONFIG_ATTRIB(surface->Config, EGL_CONFIG_ID);
      return EGL_TRUE;
   case EGL_LARGEST_PBUFFER:
      *value = drv->LargestPbuffer;
      return EGL_TRUE;
   case EGL_SURFACE_TYPE:
      *value = surface->Type;
      return EGL_TRUE;
#ifdef EGL_VERSION_1_1
   case EGL_TEXTURE_FORMAT:
      /* texture attributes: only for pbuffers, no error otherwise */
      if (surface->Type == EGL_PBUFFER_BIT)
         *value = surface->TextureFormat;
      return EGL_TRUE;
   case EGL_TEXTURE_TARGET:
      if (surface->Type == EGL_PBUFFER_BIT)
         *value = surface->TextureTarget;
      return EGL_TRUE;
   case EGL_MIPMAP_TEXTURE:
      if (surface->Type == EGL_PBUFFER_BIT)
         *value = surface->MipmapTexture;
      return EGL_TRUE;
   case EGL_MIPMAP_LEVEL:
      if (surface->Type == EGL_PBUFFER_BIT)
         *value = surface->MipmapLevel;
      return EGL_TRUE;
#endif /* EGL_VERSION_1_1 */
#ifdef EGL_VERSION_1_2
   case EGL_SWAP_BEHAVIOR:
      *value = surface->SwapBehavior;
      return EGL_TRUE;
   case EGL_RENDER_BUFFER:
      *value = surface->RenderBuffer;
      return EGL_TRUE;
   case EGL_PIXEL_ASPECT_RATIO:
      *value = surface->AspectRatio;
      return EGL_TRUE;
   case EGL_HORIZONTAL_RESOLUTION:
      *value = surface->HorizontalResolution;
      return EGL_TRUE;
   case EGL_VERTICAL_RESOLUTION:
      *value = surface->VerticalResolution;
      return EGL_TRUE;
   case EGL_ALPHA_FORMAT:
      *value = surface->AlphaFormat;
      return EGL_TRUE;
   case EGL_COLORSPACE:
      *value = surface->Colorspace;
      return EGL_TRUE;
#endif /* EGL_VERSION_1_2 */
   default:
      _eglError(EGL_BAD_ATTRIBUTE, "eglQuerySurface");
      return EGL_FALSE;
   }
}


/**
 * Example function - drivers should do a proper implementation.
 */
EGLSurface
_eglCreateWindowSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
                        NativeWindowType window, const EGLint *attrib_list)
{
#if 0 /* THIS IS JUST EXAMPLE CODE */
   _EGLSurface *surf;

   surf = (_EGLSurface *) calloc(1, sizeof(_EGLSurface));
   if (!surf)
      return EGL_NO_SURFACE;

   if (!_eglInitSurface(drv, dpy, surf, EGL_WINDOW_BIT, config, attrib_list)) {
      free(surf);
      return EGL_NO_SURFACE;
   }

   _eglSaveSurface(surf);

   return surf->Handle;
#endif
   return EGL_NO_SURFACE;
}


/**
 * Example function - drivers should do a proper implementation.
 */
EGLSurface
_eglCreatePixmapSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
                        NativePixmapType pixmap, const EGLint *attrib_list)
{
#if 0 /* THIS IS JUST EXAMPLE CODE */
   _EGLSurface *surf;

   surf = (_EGLSurface *) calloc(1, sizeof(_EGLSurface));
   if (!surf)
      return EGL_NO_SURFACE;

   if (!_eglInitSurface(drv, dpy, surf, EGL_PIXMAP_BIT, config, attrib_list)) {
      free(surf);
      return EGL_NO_SURFACE;
   }

   _eglSaveSurface(surf);

   return surf->Handle;
#endif
   return EGL_NO_SURFACE;
}


/**
 * Example function - drivers should do a proper implementation.
 */
EGLSurface
_eglCreatePbufferSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
                         const EGLint *attrib_list)
{
#if 0 /* THIS IS JUST EXAMPLE CODE */
   _EGLSurface *surf;

   surf = (_EGLSurface *) calloc(1, sizeof(_EGLSurface));
   if (!surf)
      return EGL_NO_SURFACE;

   if (!_eglInitSurface(drv, dpy, surf, EGL_PBUFFER_BIT, config, attrib_list)) {
      free(surf);
      return EGL_NO_SURFACE;
   }

   _eglSaveSurface(surf);

   return surf->Handle;
#endif
   return EGL_NO_SURFACE;
}


/**
 * Default fallback routine - drivers should usually override this.
 */
EGLBoolean
_eglDestroySurface(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface)
{
   _EGLSurface *surf = _eglLookupSurface(surface);
   if (surf) {
      _eglHashRemove(_eglGlobal.Surfaces, (EGLuint) surface);
      if (surf->IsBound) {
         surf->DeletePending = EGL_TRUE;
      }
      else {
         free(surf);
      }
      return EGL_TRUE;
   }
   else {
      _eglError(EGL_BAD_SURFACE, "eglDestroySurface");
      return EGL_FALSE;
   }
}


/**
 * Default fallback routine - drivers might override this.
 */
EGLBoolean
_eglSurfaceAttrib(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surf, EGLint attribute, EGLint value)
{
   _EGLSurface *surface = _eglLookupSurface(surf);

   if (surface == NULL) {
      _eglError(EGL_BAD_SURFACE, "eglSurfaceAttrib");
      return EGL_FALSE;
   }

   switch (attribute) {
   case EGL_MIPMAP_LEVEL:
      surface->MipmapLevel = value;
      break;
   default:
      _eglError(EGL_BAD_ATTRIBUTE, "eglSurfaceAttrib");
      return EGL_FALSE;
   }
   return EGL_TRUE;
}


EGLBoolean
_eglBindTexImage(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface, EGLint buffer)
{
   /* XXX unfinished */
   return EGL_FALSE;
}


EGLBoolean
_eglReleaseTexImage(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface, EGLint buffer)
{
   /* XXX unfinished */
   return EGL_FALSE;
}


EGLBoolean
_eglSwapInterval(_EGLDriver *drv, EGLDisplay dpy, EGLint interval)
{
   _EGLSurface *surf = _eglGetCurrentSurface(EGL_DRAW);
   if (surf == NULL) {
      _eglError(EGL_BAD_SURFACE, "eglSwapInterval");
      return EGL_FALSE;
   }
   surf->SwapInterval = interval;
   return EGL_TRUE;
}


#ifdef EGL_VERSION_1_2

/**
 * Example function - drivers should do a proper implementation.
 */
EGLSurface
_eglCreatePbufferFromClientBuffer(_EGLDriver *drv, EGLDisplay dpy,
                                  EGLenum buftype, EGLClientBuffer buffer,
                                  EGLConfig config, const EGLint *attrib_list)
{
   if (buftype != EGL_OPENVG_IMAGE) {
      _eglError(EGL_BAD_PARAMETER, "eglCreatePbufferFromClientBuffer");
      return EGL_NO_SURFACE;
   }

   return EGL_NO_SURFACE;
}

#endif /* EGL_VERSION_1_2 */