eglApi.cpp revision 5fecea776a5f093c21ac1a0ad3552b847d4be23e 
1/*
2 ** Copyright 2007, The Android Open Source Project
3 **
4 ** Licensed under the Apache License, Version 2.0 (the "License");
5 ** you may not use this file except in compliance with the License.
6 ** You may obtain a copy of the License at
7 **
8 **     http://www.apache.org/licenses/LICENSE-2.0
9 **
10 ** Unless required by applicable law or agreed to in writing, software
11 ** distributed under the License is distributed on an "AS IS" BASIS,
12 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 ** See the License for the specific language governing permissions and
14 ** limitations under the License.
15 */
16
17#include <ctype.h>
18#include <stdlib.h>
19#include <string.h>
20
21#include <hardware/gralloc.h>
22#include <system/window.h>
23
24#include <EGL/egl.h>
25#include <EGL/eglext.h>
26#include <GLES/gl.h>
27#include <GLES/glext.h>
28
29#include <cutils/log.h>
30#include <cutils/atomic.h>
31#include <cutils/properties.h>
32#include <cutils/memory.h>
33
34#include <utils/KeyedVector.h>
35#include <utils/SortedVector.h>
36#include <utils/String8.h>
37
38#include "egl_impl.h"
39#include "egl_tls.h"
40#include "glesv2dbg.h"
41#include "hooks.h"
42
43#include "egl_display.h"
44#include "egl_impl.h"
45#include "egl_object.h"
46#include "egl_tls.h"
47
48using namespace android;
49
50// ----------------------------------------------------------------------------
51
52static char const * const sVendorString     = "Android";
53static char const * const sVersionString    = "1.4 Android META-EGL";
54static char const * const sClientApiString  = "OpenGL ES";
55static char const * const sExtensionString  =
56        "EGL_KHR_image "
57        "EGL_KHR_image_base "
58        "EGL_KHR_image_pixmap "
59        "EGL_KHR_gl_texture_2D_image "
60        "EGL_KHR_gl_texture_cubemap_image "
61        "EGL_KHR_gl_renderbuffer_image "
62        "EGL_KHR_fence_sync "
63        "EGL_ANDROID_image_native_buffer "
64        "EGL_ANDROID_swap_rectangle "
65        ;
66
67struct extention_map_t {
68    const char* name;
69    __eglMustCastToProperFunctionPointerType address;
70};
71
72static const extention_map_t sExtentionMap[] = {
73    { "eglLockSurfaceKHR",
74            (__eglMustCastToProperFunctionPointerType)&eglLockSurfaceKHR },
75    { "eglUnlockSurfaceKHR",
76            (__eglMustCastToProperFunctionPointerType)&eglUnlockSurfaceKHR },
77    { "eglCreateImageKHR",
78            (__eglMustCastToProperFunctionPointerType)&eglCreateImageKHR },
79    { "eglDestroyImageKHR",
80            (__eglMustCastToProperFunctionPointerType)&eglDestroyImageKHR },
81    { "eglSetSwapRectangleANDROID",
82            (__eglMustCastToProperFunctionPointerType)&eglSetSwapRectangleANDROID },
83};
84
85// accesses protected by sExtensionMapMutex
86static DefaultKeyedVector<String8, __eglMustCastToProperFunctionPointerType> sGLExtentionMap;
87static int sGLExtentionSlot = 0;
88static pthread_mutex_t sExtensionMapMutex = PTHREAD_MUTEX_INITIALIZER;
89
90static void(*findProcAddress(const char* name,
91        const extention_map_t* map, size_t n))() {
92    for (uint32_t i=0 ; i<n ; i++) {
93        if (!strcmp(name, map[i].name)) {
94            return map[i].address;
95        }
96    }
97    return NULL;
98}
99
100// ----------------------------------------------------------------------------
101
102template<typename T>
103static __attribute__((noinline))
104int binarySearch(T const sortedArray[], int first, int last, T key) {
105    while (first <= last) {
106        int mid = (first + last) / 2;
107        if (sortedArray[mid] < key) {
108            first = mid + 1;
109        } else if (key < sortedArray[mid]) {
110            last = mid - 1;
111        } else {
112            return mid;
113        }
114    }
115    return -1;
116}
117
118// ----------------------------------------------------------------------------
119
120namespace android {
121extern void setGLHooksThreadSpecific(gl_hooks_t const *value);
122extern EGLBoolean egl_init_drivers();
123extern const __eglMustCastToProperFunctionPointerType gExtensionForwarders[MAX_NUMBER_OF_GL_EXTENSIONS];
124extern int gEGLDebugLevel;
125extern gl_hooks_t gHooksTrace;
126extern gl_hooks_t gHooksDebug;
127} // namespace android;
128
129// ----------------------------------------------------------------------------
130
131static inline void clearError() { egl_tls_t::clearError(); }
132static inline EGLContext getContext() { return egl_tls_t::getContext(); }
133
134// ----------------------------------------------------------------------------
135
136EGLDisplay eglGetDisplay(EGLNativeDisplayType display)
137{
138    clearError();
139
140    uint32_t index = uint32_t(display);
141    if (index >= NUM_DISPLAYS) {
142        return setError(EGL_BAD_PARAMETER, EGL_NO_DISPLAY);
143    }
144
145    if (egl_init_drivers() == EGL_FALSE) {
146        return setError(EGL_BAD_PARAMETER, EGL_NO_DISPLAY);
147    }
148
149    EGLDisplay dpy = egl_display_t::getFromNativeDisplay(display);
150    return dpy;
151}
152
153// ----------------------------------------------------------------------------
154// Initialization
155// ----------------------------------------------------------------------------
156
157EGLBoolean eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor)
158{
159    clearError();
160
161    egl_display_t * const dp = get_display(dpy);
162    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
163
164    EGLBoolean res = dp->initialize(major, minor);
165
166    return res;
167}
168
169EGLBoolean eglTerminate(EGLDisplay dpy)
170{
171    // NOTE: don't unload the drivers b/c some APIs can be called
172    // after eglTerminate() has been called. eglTerminate() only
173    // terminates an EGLDisplay, not a EGL itself.
174
175    clearError();
176
177    egl_display_t* const dp = get_display(dpy);
178    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
179
180    EGLBoolean res = dp->terminate();
181
182    return res;
183}
184
185// ----------------------------------------------------------------------------
186// configuration
187// ----------------------------------------------------------------------------
188
189EGLBoolean eglGetConfigs(   EGLDisplay dpy,
190                            EGLConfig *configs,
191                            EGLint config_size, EGLint *num_config)
192{
193    clearError();
194
195    egl_display_t const * const dp = validate_display(dpy);
196    if (!dp) return EGL_FALSE;
197
198    GLint numConfigs = dp->numTotalConfigs;
199    if (!configs) {
200        *num_config = numConfigs;
201        return EGL_TRUE;
202    }
203
204    GLint n = 0;
205    for (intptr_t i=0 ; i<dp->numTotalConfigs && config_size ; i++) {
206        *configs++ = EGLConfig(i);
207        config_size--;
208        n++;
209    }
210
211    *num_config = n;
212    return EGL_TRUE;
213}
214
215EGLBoolean eglChooseConfig( EGLDisplay dpy, const EGLint *attrib_list,
216                            EGLConfig *configs, EGLint config_size,
217                            EGLint *num_config)
218{
219    clearError();
220
221    egl_display_t const * const dp = validate_display(dpy);
222    if (!dp) return EGL_FALSE;
223
224    if (num_config==0) {
225        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
226    }
227
228    EGLint n;
229    EGLBoolean res = EGL_FALSE;
230    *num_config = 0;
231
232
233    // It is unfortunate, but we need to remap the EGL_CONFIG_IDs,
234    // to do this, we have to go through the attrib_list array once
235    // to figure out both its size and if it contains an EGL_CONFIG_ID
236    // key. If so, the full array is copied and patched.
237    // NOTE: we assume that there can be only one occurrence
238    // of EGL_CONFIG_ID.
239
240    EGLint patch_index = -1;
241    GLint attr;
242    size_t size = 0;
243    if (attrib_list) {
244        while ((attr=attrib_list[size]) != EGL_NONE) {
245            if (attr == EGL_CONFIG_ID)
246                patch_index = size;
247            size += 2;
248        }
249    }
250    if (patch_index >= 0) {
251        size += 2; // we need copy the sentinel as well
252        EGLint* new_list = (EGLint*)malloc(size*sizeof(EGLint));
253        if (new_list == 0)
254            return setError(EGL_BAD_ALLOC, EGL_FALSE);
255        memcpy(new_list, attrib_list, size*sizeof(EGLint));
256
257        // patch the requested EGL_CONFIG_ID
258        bool found = false;
259        EGLConfig ourConfig(0);
260        EGLint& configId(new_list[patch_index+1]);
261        for (intptr_t i=0 ; i<dp->numTotalConfigs ; i++) {
262            if (dp->configs[i].configId == configId) {
263                ourConfig = EGLConfig(i);
264                configId = dp->configs[i].implConfigId;
265                found = true;
266                break;
267            }
268        }
269
270        egl_connection_t* const cnx = &gEGLImpl[dp->configs[intptr_t(ourConfig)].impl];
271        if (found && cnx->dso) {
272            // and switch to the new list
273            attrib_list = const_cast<const EGLint *>(new_list);
274
275            // At this point, the only configuration that can match is
276            // dp->configs[i][index], however, we don't know if it would be
277            // rejected because of the other attributes, so we do have to call
278            // cnx->egl.eglChooseConfig() -- but we don't have to loop
279            // through all the EGLimpl[].
280            // We also know we can only get a single config back, and we know
281            // which one.
282
283            res = cnx->egl.eglChooseConfig(
284                    dp->disp[ dp->configs[intptr_t(ourConfig)].impl ].dpy,
285                    attrib_list, configs, config_size, &n);
286            if (res && n>0) {
287                // n has to be 0 or 1, by construction, and we already know
288                // which config it will return (since there can be only one).
289                if (configs) {
290                    configs[0] = ourConfig;
291                }
292                *num_config = 1;
293            }
294        }
295
296        free(const_cast<EGLint *>(attrib_list));
297        return res;
298    }
299
300
301    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
302        egl_connection_t* const cnx = &gEGLImpl[i];
303        if (cnx->dso) {
304            if (cnx->egl.eglChooseConfig(
305                    dp->disp[i].dpy, attrib_list, configs, config_size, &n)) {
306                if (configs) {
307                    // now we need to convert these client EGLConfig to our
308                    // internal EGLConfig format.
309                    // This is done in O(n Log(n)) time.
310                    for (int j=0 ; j<n ; j++) {
311                        egl_config_t key(i, configs[j]);
312                        intptr_t index = binarySearch<egl_config_t>(
313                                dp->configs, 0, dp->numTotalConfigs, key);
314                        if (index >= 0) {
315                            configs[j] = EGLConfig(index);
316                        } else {
317                            return setError(EGL_BAD_CONFIG, EGL_FALSE);
318                        }
319                    }
320                    configs += n;
321                    config_size -= n;
322                }
323                *num_config += n;
324                res = EGL_TRUE;
325            }
326        }
327    }
328    return res;
329}
330
331EGLBoolean eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config,
332        EGLint attribute, EGLint *value)
333{
334    clearError();
335
336    egl_display_t const* dp = 0;
337    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
338    if (!cnx) return EGL_FALSE;
339
340    if (attribute == EGL_CONFIG_ID) {
341        *value = dp->configs[intptr_t(config)].configId;
342        return EGL_TRUE;
343    }
344    return cnx->egl.eglGetConfigAttrib(
345            dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
346            dp->configs[intptr_t(config)].config, attribute, value);
347}
348
349// ----------------------------------------------------------------------------
350// surfaces
351// ----------------------------------------------------------------------------
352
353EGLSurface eglCreateWindowSurface(  EGLDisplay dpy, EGLConfig config,
354                                    NativeWindowType window,
355                                    const EGLint *attrib_list)
356{
357    clearError();
358
359    egl_display_t const* dp = 0;
360    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
361    if (cnx) {
362        EGLDisplay iDpy = dp->disp[ dp->configs[intptr_t(config)].impl ].dpy;
363        EGLConfig iConfig = dp->configs[intptr_t(config)].config;
364        EGLint format;
365
366        if (native_window_api_connect(window, NATIVE_WINDOW_API_EGL) != OK) {
367            LOGE("EGLNativeWindowType %p already connected to another API",
368                    window);
369            return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
370        }
371
372        // set the native window's buffers format to match this config
373        if (cnx->egl.eglGetConfigAttrib(iDpy,
374                iConfig, EGL_NATIVE_VISUAL_ID, &format)) {
375            if (format != 0) {
376                int err = native_window_set_buffers_format(window, format);
377                if (err != 0) {
378                    LOGE("error setting native window pixel format: %s (%d)",
379                            strerror(-err), err);
380                    native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
381                    return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
382                }
383            }
384        }
385
386        EGLSurface surface = cnx->egl.eglCreateWindowSurface(
387                iDpy, iConfig, window, attrib_list);
388        if (surface != EGL_NO_SURFACE) {
389            egl_surface_t* s = new egl_surface_t(dpy, config, window, surface,
390                    dp->configs[intptr_t(config)].impl, cnx);
391            return s;
392        }
393
394        // EGLSurface creation failed
395        native_window_set_buffers_format(window, 0);
396        native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
397    }
398    return EGL_NO_SURFACE;
399}
400
401EGLSurface eglCreatePixmapSurface(  EGLDisplay dpy, EGLConfig config,
402                                    NativePixmapType pixmap,
403                                    const EGLint *attrib_list)
404{
405    clearError();
406
407    egl_display_t const* dp = 0;
408    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
409    if (cnx) {
410        EGLSurface surface = cnx->egl.eglCreatePixmapSurface(
411                dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
412                dp->configs[intptr_t(config)].config, pixmap, attrib_list);
413        if (surface != EGL_NO_SURFACE) {
414            egl_surface_t* s = new egl_surface_t(dpy, config, NULL, surface,
415                    dp->configs[intptr_t(config)].impl, cnx);
416            return s;
417        }
418    }
419    return EGL_NO_SURFACE;
420}
421
422EGLSurface eglCreatePbufferSurface( EGLDisplay dpy, EGLConfig config,
423                                    const EGLint *attrib_list)
424{
425    clearError();
426
427    egl_display_t const* dp = 0;
428    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
429    if (cnx) {
430        EGLSurface surface = cnx->egl.eglCreatePbufferSurface(
431                dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
432                dp->configs[intptr_t(config)].config, attrib_list);
433        if (surface != EGL_NO_SURFACE) {
434            egl_surface_t* s = new egl_surface_t(dpy, config, NULL, surface,
435                    dp->configs[intptr_t(config)].impl, cnx);
436            return s;
437        }
438    }
439    return EGL_NO_SURFACE;
440}
441
442EGLBoolean eglDestroySurface(EGLDisplay dpy, EGLSurface surface)
443{
444    clearError();
445
446    egl_display_t const * const dp = validate_display(dpy);
447    if (!dp) return EGL_FALSE;
448
449    SurfaceRef _s(surface);
450    if (!_s.get())
451        return setError(EGL_BAD_SURFACE, EGL_FALSE);
452
453    egl_surface_t * const s = get_surface(surface);
454    EGLBoolean result = s->cnx->egl.eglDestroySurface(
455            dp->disp[s->impl].dpy, s->surface);
456    if (result == EGL_TRUE) {
457        _s.terminate();
458    }
459    return result;
460}
461
462EGLBoolean eglQuerySurface( EGLDisplay dpy, EGLSurface surface,
463                            EGLint attribute, EGLint *value)
464{
465    clearError();
466
467    egl_display_t const * const dp = validate_display(dpy);
468    if (!dp) return EGL_FALSE;
469
470    SurfaceRef _s(surface);
471    if (!_s.get())
472        return setError(EGL_BAD_SURFACE, EGL_FALSE);
473
474    egl_surface_t const * const s = get_surface(surface);
475    EGLBoolean result(EGL_TRUE);
476    if (attribute == EGL_CONFIG_ID) {
477        // We need to remap EGL_CONFIG_IDs
478        *value = dp->configs[intptr_t(s->config)].configId;
479    } else {
480        result = s->cnx->egl.eglQuerySurface(
481                dp->disp[s->impl].dpy, s->surface, attribute, value);
482    }
483
484    return result;
485}
486
487// ----------------------------------------------------------------------------
488// Contexts
489// ----------------------------------------------------------------------------
490
491EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config,
492                            EGLContext share_list, const EGLint *attrib_list)
493{
494    clearError();
495
496    egl_display_t const* dp = 0;
497    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
498    if (cnx) {
499        if (share_list != EGL_NO_CONTEXT) {
500            egl_context_t* const c = get_context(share_list);
501            share_list = c->context;
502        }
503        EGLContext context = cnx->egl.eglCreateContext(
504                dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
505                dp->configs[intptr_t(config)].config,
506                share_list, attrib_list);
507        if (context != EGL_NO_CONTEXT) {
508            // figure out if it's a GLESv1 or GLESv2
509            int version = 0;
510            if (attrib_list) {
511                while (*attrib_list != EGL_NONE) {
512                    GLint attr = *attrib_list++;
513                    GLint value = *attrib_list++;
514                    if (attr == EGL_CONTEXT_CLIENT_VERSION) {
515                        if (value == 1) {
516                            version = GLESv1_INDEX;
517                        } else if (value == 2) {
518                            version = GLESv2_INDEX;
519                        }
520                    }
521                };
522            }
523            egl_context_t* c = new egl_context_t(dpy, context, config,
524                    dp->configs[intptr_t(config)].impl, cnx, version);
525            return c;
526        }
527    }
528    return EGL_NO_CONTEXT;
529}
530
531EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx)
532{
533    clearError();
534
535    egl_display_t const * const dp = validate_display(dpy);
536    if (!dp)
537        return EGL_FALSE;
538
539    ContextRef _c(ctx);
540    if (!_c.get())
541        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
542
543    egl_context_t * const c = get_context(ctx);
544    EGLBoolean result = c->cnx->egl.eglDestroyContext(
545            dp->disp[c->impl].dpy, c->context);
546    if (result == EGL_TRUE) {
547        _c.terminate();
548    }
549    return result;
550}
551
552static void loseCurrent(egl_context_t * cur_c)
553{
554    if (cur_c) {
555        egl_surface_t * cur_r = get_surface(cur_c->read);
556        egl_surface_t * cur_d = get_surface(cur_c->draw);
557
558        // by construction, these are either 0 or valid (possibly terminated)
559        // it should be impossible for these to be invalid
560        ContextRef _cur_c(cur_c);
561        SurfaceRef _cur_r(cur_r);
562        SurfaceRef _cur_d(cur_d);
563
564        cur_c->read = NULL;
565        cur_c->draw = NULL;
566
567        _cur_c.release();
568        _cur_r.release();
569        _cur_d.release();
570    }
571}
572
573EGLBoolean eglMakeCurrent(  EGLDisplay dpy, EGLSurface draw,
574                            EGLSurface read, EGLContext ctx)
575{
576    clearError();
577
578    egl_display_t const * const dp = get_display(dpy);
579    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
580
581    // If ctx is not EGL_NO_CONTEXT, read is not EGL_NO_SURFACE, or draw is not
582    // EGL_NO_SURFACE, then an EGL_NOT_INITIALIZED error is generated if dpy is
583    // a valid but uninitialized display.
584    if ( (ctx != EGL_NO_CONTEXT) || (read != EGL_NO_SURFACE) ||
585         (draw != EGL_NO_SURFACE) ) {
586        if (!dp->isReady()) return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
587    }
588
589    // get a reference to the object passed in
590    ContextRef _c(ctx);
591    SurfaceRef _d(draw);
592    SurfaceRef _r(read);
593
594    // validate the context (if not EGL_NO_CONTEXT)
595    if ((ctx != EGL_NO_CONTEXT) && !_c.get()) {
596        // EGL_NO_CONTEXT is valid
597        return EGL_FALSE;
598    }
599
600    // these are the underlying implementation's object
601    EGLContext impl_ctx  = EGL_NO_CONTEXT;
602    EGLSurface impl_draw = EGL_NO_SURFACE;
603    EGLSurface impl_read = EGL_NO_SURFACE;
604
605    // these are our objects structs passed in
606    egl_context_t       * c = NULL;
607    egl_surface_t const * d = NULL;
608    egl_surface_t const * r = NULL;
609
610    // these are the current objects structs
611    egl_context_t * cur_c = get_context(getContext());
612
613    if (ctx != EGL_NO_CONTEXT) {
614        c = get_context(ctx);
615        impl_ctx = c->context;
616    } else {
617        // no context given, use the implementation of the current context
618        if (cur_c == NULL) {
619            // no current context
620            if (draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE) {
621                // calling eglMakeCurrent( ..., !=0, !=0, EGL_NO_CONTEXT);
622                return setError(EGL_BAD_MATCH, EGL_FALSE);
623            }
624            // not an error, there is just no current context.
625            return EGL_TRUE;
626        }
627    }
628
629    // retrieve the underlying implementation's draw EGLSurface
630    if (draw != EGL_NO_SURFACE) {
631        d = get_surface(draw);
632        // make sure the EGLContext and EGLSurface passed in are for
633        // the same driver
634        if (c && d->impl != c->impl)
635            return setError(EGL_BAD_MATCH, EGL_FALSE);
636        impl_draw = d->surface;
637    }
638
639    // retrieve the underlying implementation's read EGLSurface
640    if (read != EGL_NO_SURFACE) {
641        r = get_surface(read);
642        // make sure the EGLContext and EGLSurface passed in are for
643        // the same driver
644        if (c && r->impl != c->impl)
645            return setError(EGL_BAD_MATCH, EGL_FALSE);
646        impl_read = r->surface;
647    }
648
649    EGLBoolean result;
650
651    if (c) {
652        result = c->cnx->egl.eglMakeCurrent(
653                dp->disp[c->impl].dpy, impl_draw, impl_read, impl_ctx);
654    } else {
655        result = cur_c->cnx->egl.eglMakeCurrent(
656                dp->disp[cur_c->impl].dpy, impl_draw, impl_read, impl_ctx);
657    }
658
659    if (result == EGL_TRUE) {
660
661        loseCurrent(cur_c);
662
663        if (ctx != EGL_NO_CONTEXT) {
664            setGLHooksThreadSpecific(c->cnx->hooks[c->version]);
665            egl_tls_t::setContext(ctx);
666            if (gEGLDebugLevel > 0) {
667                CreateDbgContext(c->version, c->cnx->hooks[c->version]);
668            }
669            _c.acquire();
670            _r.acquire();
671            _d.acquire();
672            c->read = read;
673            c->draw = draw;
674        } else {
675            setGLHooksThreadSpecific(&gHooksNoContext);
676            egl_tls_t::setContext(EGL_NO_CONTEXT);
677        }
678    } else {
679        // this will LOGE the error
680        result = setError(c->cnx->egl.eglGetError(), EGL_FALSE);
681    }
682    return result;
683}
684
685
686EGLBoolean eglQueryContext( EGLDisplay dpy, EGLContext ctx,
687                            EGLint attribute, EGLint *value)
688{
689    clearError();
690
691    egl_display_t const * const dp = validate_display(dpy);
692    if (!dp) return EGL_FALSE;
693
694    ContextRef _c(ctx);
695    if (!_c.get()) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
696
697    egl_context_t * const c = get_context(ctx);
698
699    EGLBoolean result(EGL_TRUE);
700    if (attribute == EGL_CONFIG_ID) {
701        *value = dp->configs[intptr_t(c->config)].configId;
702    } else {
703        // We need to remap EGL_CONFIG_IDs
704        result = c->cnx->egl.eglQueryContext(
705                dp->disp[c->impl].dpy, c->context, attribute, value);
706    }
707
708    return result;
709}
710
711EGLContext eglGetCurrentContext(void)
712{
713    // could be called before eglInitialize(), but we wouldn't have a context
714    // then, and this function would correctly return EGL_NO_CONTEXT.
715
716    clearError();
717
718    EGLContext ctx = getContext();
719    return ctx;
720}
721
722EGLSurface eglGetCurrentSurface(EGLint readdraw)
723{
724    // could be called before eglInitialize(), but we wouldn't have a context
725    // then, and this function would correctly return EGL_NO_SURFACE.
726
727    clearError();
728
729    EGLContext ctx = getContext();
730    if (ctx) {
731        egl_context_t const * const c = get_context(ctx);
732        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
733        switch (readdraw) {
734            case EGL_READ: return c->read;
735            case EGL_DRAW: return c->draw;
736            default: return setError(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
737        }
738    }
739    return EGL_NO_SURFACE;
740}
741
742EGLDisplay eglGetCurrentDisplay(void)
743{
744    // could be called before eglInitialize(), but we wouldn't have a context
745    // then, and this function would correctly return EGL_NO_DISPLAY.
746
747    clearError();
748
749    EGLContext ctx = getContext();
750    if (ctx) {
751        egl_context_t const * const c = get_context(ctx);
752        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
753        return c->dpy;
754    }
755    return EGL_NO_DISPLAY;
756}
757
758EGLBoolean eglWaitGL(void)
759{
760    // could be called before eglInitialize(), but we wouldn't have a context
761    // then, and this function would return GL_TRUE, which isn't wrong.
762
763    clearError();
764
765    EGLBoolean res = EGL_TRUE;
766    EGLContext ctx = getContext();
767    if (ctx) {
768        egl_context_t const * const c = get_context(ctx);
769        if (!c) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
770        if (uint32_t(c->impl)>=2)
771            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
772        egl_connection_t* const cnx = &gEGLImpl[c->impl];
773        if (!cnx->dso)
774            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
775        res = cnx->egl.eglWaitGL();
776    }
777    return res;
778}
779
780EGLBoolean eglWaitNative(EGLint engine)
781{
782    // could be called before eglInitialize(), but we wouldn't have a context
783    // then, and this function would return GL_TRUE, which isn't wrong.
784
785    clearError();
786
787    EGLBoolean res = EGL_TRUE;
788    EGLContext ctx = getContext();
789    if (ctx) {
790        egl_context_t const * const c = get_context(ctx);
791        if (!c) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
792        if (uint32_t(c->impl)>=2)
793            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
794        egl_connection_t* const cnx = &gEGLImpl[c->impl];
795        if (!cnx->dso)
796            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
797        res = cnx->egl.eglWaitNative(engine);
798    }
799    return res;
800}
801
802EGLint eglGetError(void)
803{
804    EGLint result = EGL_SUCCESS;
805    EGLint err;
806    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
807        err = EGL_SUCCESS;
808        egl_connection_t* const cnx = &gEGLImpl[i];
809        if (cnx->dso)
810            err = cnx->egl.eglGetError();
811        if (err!=EGL_SUCCESS && result==EGL_SUCCESS)
812            result = err;
813    }
814    err = egl_tls_t::getError();
815    if (result == EGL_SUCCESS)
816        result = err;
817    return result;
818}
819
820// Note: Similar implementations of these functions also exist in
821// gl2.cpp and gl.cpp, and are used by applications that call the
822// exported entry points directly.
823typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETTEXTURE2DOESPROC) (GLenum target, GLeglImageOES image);
824typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC) (GLenum target, GLeglImageOES image);
825
826static PFNGLEGLIMAGETARGETTEXTURE2DOESPROC glEGLImageTargetTexture2DOES_impl = NULL;
827static PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC glEGLImageTargetRenderbufferStorageOES_impl = NULL;
828
829static void glEGLImageTargetTexture2DOES_wrapper(GLenum target, GLeglImageOES image)
830{
831    GLeglImageOES implImage =
832        (GLeglImageOES)egl_get_image_for_current_context((EGLImageKHR)image);
833    glEGLImageTargetTexture2DOES_impl(target, implImage);
834}
835
836static void glEGLImageTargetRenderbufferStorageOES_wrapper(GLenum target, GLeglImageOES image)
837{
838    GLeglImageOES implImage =
839        (GLeglImageOES)egl_get_image_for_current_context((EGLImageKHR)image);
840    glEGLImageTargetRenderbufferStorageOES_impl(target, implImage);
841}
842
843__eglMustCastToProperFunctionPointerType eglGetProcAddress(const char *procname)
844{
845    // eglGetProcAddress() could be the very first function called
846    // in which case we must make sure we've initialized ourselves, this
847    // happens the first time egl_get_display() is called.
848
849    clearError();
850
851    if (egl_init_drivers() == EGL_FALSE) {
852        setError(EGL_BAD_PARAMETER, NULL);
853        return  NULL;
854    }
855
856    __eglMustCastToProperFunctionPointerType addr;
857    addr = findProcAddress(procname, sExtentionMap, NELEM(sExtentionMap));
858    if (addr) return addr;
859
860    // this protects accesses to sGLExtentionMap and sGLExtentionSlot
861    pthread_mutex_lock(&sExtensionMapMutex);
862
863        /*
864         * Since eglGetProcAddress() is not associated to anything, it needs
865         * to return a function pointer that "works" regardless of what
866         * the current context is.
867         *
868         * For this reason, we return a "forwarder", a small stub that takes
869         * care of calling the function associated with the context
870         * currently bound.
871         *
872         * We first look for extensions we've already resolved, if we're seeing
873         * this extension for the first time, we go through all our
874         * implementations and call eglGetProcAddress() and record the
875         * result in the appropriate implementation hooks and return the
876         * address of the forwarder corresponding to that hook set.
877         *
878         */
879
880        const String8 name(procname);
881        addr = sGLExtentionMap.valueFor(name);
882        const int slot = sGLExtentionSlot;
883
884        LOGE_IF(slot >= MAX_NUMBER_OF_GL_EXTENSIONS,
885                "no more slots for eglGetProcAddress(\"%s\")",
886                procname);
887
888        if (!addr && (slot < MAX_NUMBER_OF_GL_EXTENSIONS)) {
889            bool found = false;
890            for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
891                egl_connection_t* const cnx = &gEGLImpl[i];
892                if (cnx->dso && cnx->egl.eglGetProcAddress) {
893                    found = true;
894                    // Extensions are independent of the bound context
895                    cnx->hooks[GLESv1_INDEX]->ext.extensions[slot] =
896                    cnx->hooks[GLESv2_INDEX]->ext.extensions[slot] =
897#if EGL_TRACE
898                    gHooksDebug.ext.extensions[slot] = gHooksTrace.ext.extensions[slot] =
899#endif
900                            cnx->egl.eglGetProcAddress(procname);
901                }
902            }
903            if (found) {
904                addr = gExtensionForwarders[slot];
905
906                if (!strcmp(procname, "glEGLImageTargetTexture2DOES")) {
907                    glEGLImageTargetTexture2DOES_impl = (PFNGLEGLIMAGETARGETTEXTURE2DOESPROC)addr;
908                    addr = (__eglMustCastToProperFunctionPointerType)glEGLImageTargetTexture2DOES_wrapper;
909                }
910                if (!strcmp(procname, "glEGLImageTargetRenderbufferStorageOES")) {
911                    glEGLImageTargetRenderbufferStorageOES_impl = (PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC)addr;
912                    addr = (__eglMustCastToProperFunctionPointerType)glEGLImageTargetRenderbufferStorageOES_wrapper;
913                }
914
915                sGLExtentionMap.add(name, addr);
916                sGLExtentionSlot++;
917            }
918        }
919
920    pthread_mutex_unlock(&sExtensionMapMutex);
921    return addr;
922}
923
924EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw)
925{
926    EGLBoolean Debug_eglSwapBuffers(EGLDisplay dpy, EGLSurface draw);
927    if (gEGLDebugLevel > 0)
928        Debug_eglSwapBuffers(dpy, draw);
929
930    clearError();
931
932    egl_display_t const * const dp = validate_display(dpy);
933    if (!dp) return EGL_FALSE;
934
935    SurfaceRef _s(draw);
936    if (!_s.get())
937        return setError(EGL_BAD_SURFACE, EGL_FALSE);
938
939    egl_surface_t const * const s = get_surface(draw);
940    return s->cnx->egl.eglSwapBuffers(dp->disp[s->impl].dpy, s->surface);
941}
942
943EGLBoolean eglCopyBuffers(  EGLDisplay dpy, EGLSurface surface,
944                            NativePixmapType target)
945{
946    clearError();
947
948    egl_display_t const * const dp = validate_display(dpy);
949    if (!dp) return EGL_FALSE;
950
951    SurfaceRef _s(surface);
952    if (!_s.get())
953        return setError(EGL_BAD_SURFACE, EGL_FALSE);
954
955    egl_surface_t const * const s = get_surface(surface);
956    return s->cnx->egl.eglCopyBuffers(
957            dp->disp[s->impl].dpy, s->surface, target);
958}
959
960const char* eglQueryString(EGLDisplay dpy, EGLint name)
961{
962    clearError();
963
964    egl_display_t const * const dp = validate_display(dpy);
965    if (!dp) return (const char *) NULL;
966
967    switch (name) {
968        case EGL_VENDOR:
969            return sVendorString;
970        case EGL_VERSION:
971            return sVersionString;
972        case EGL_EXTENSIONS:
973            return sExtensionString;
974        case EGL_CLIENT_APIS:
975            return sClientApiString;
976    }
977    return setError(EGL_BAD_PARAMETER, (const char *)0);
978}
979
980
981// ----------------------------------------------------------------------------
982// EGL 1.1
983// ----------------------------------------------------------------------------
984
985EGLBoolean eglSurfaceAttrib(
986        EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value)
987{
988    clearError();
989
990    egl_display_t const * const dp = validate_display(dpy);
991    if (!dp) return EGL_FALSE;
992
993    SurfaceRef _s(surface);
994    if (!_s.get())
995        return setError(EGL_BAD_SURFACE, EGL_FALSE);
996
997    egl_surface_t const * const s = get_surface(surface);
998    if (s->cnx->egl.eglSurfaceAttrib) {
999        return s->cnx->egl.eglSurfaceAttrib(
1000                dp->disp[s->impl].dpy, s->surface, attribute, value);
1001    }
1002    return setError(EGL_BAD_SURFACE, EGL_FALSE);
1003}
1004
1005EGLBoolean eglBindTexImage(
1006        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
1007{
1008    clearError();
1009
1010    egl_display_t const * const dp = validate_display(dpy);
1011    if (!dp) return EGL_FALSE;
1012
1013    SurfaceRef _s(surface);
1014    if (!_s.get())
1015        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1016
1017    egl_surface_t const * const s = get_surface(surface);
1018    if (s->cnx->egl.eglBindTexImage) {
1019        return s->cnx->egl.eglBindTexImage(
1020                dp->disp[s->impl].dpy, s->surface, buffer);
1021    }
1022    return setError(EGL_BAD_SURFACE, EGL_FALSE);
1023}
1024
1025EGLBoolean eglReleaseTexImage(
1026        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
1027{
1028    clearError();
1029
1030    egl_display_t const * const dp = validate_display(dpy);
1031    if (!dp) return EGL_FALSE;
1032
1033    SurfaceRef _s(surface);
1034    if (!_s.get())
1035        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1036
1037    egl_surface_t const * const s = get_surface(surface);
1038    if (s->cnx->egl.eglReleaseTexImage) {
1039        return s->cnx->egl.eglReleaseTexImage(
1040                dp->disp[s->impl].dpy, s->surface, buffer);
1041    }
1042    return setError(EGL_BAD_SURFACE, EGL_FALSE);
1043}
1044
1045EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval)
1046{
1047    clearError();
1048
1049    egl_display_t const * const dp = validate_display(dpy);
1050    if (!dp) return EGL_FALSE;
1051
1052    EGLBoolean res = EGL_TRUE;
1053    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
1054        egl_connection_t* const cnx = &gEGLImpl[i];
1055        if (cnx->dso) {
1056            if (cnx->egl.eglSwapInterval) {
1057                if (cnx->egl.eglSwapInterval(
1058                        dp->disp[i].dpy, interval) == EGL_FALSE) {
1059                    res = EGL_FALSE;
1060                }
1061            }
1062        }
1063    }
1064    return res;
1065}
1066
1067
1068// ----------------------------------------------------------------------------
1069// EGL 1.2
1070// ----------------------------------------------------------------------------
1071
1072EGLBoolean eglWaitClient(void)
1073{
1074    clearError();
1075
1076    // could be called before eglInitialize(), but we wouldn't have a context
1077    // then, and this function would return GL_TRUE, which isn't wrong.
1078    EGLBoolean res = EGL_TRUE;
1079    EGLContext ctx = getContext();
1080    if (ctx) {
1081        egl_context_t const * const c = get_context(ctx);
1082        if (!c) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
1083        if (uint32_t(c->impl)>=2)
1084            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
1085        egl_connection_t* const cnx = &gEGLImpl[c->impl];
1086        if (!cnx->dso)
1087            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
1088        if (cnx->egl.eglWaitClient) {
1089            res = cnx->egl.eglWaitClient();
1090        } else {
1091            res = cnx->egl.eglWaitGL();
1092        }
1093    }
1094    return res;
1095}
1096
1097EGLBoolean eglBindAPI(EGLenum api)
1098{
1099    clearError();
1100
1101    if (egl_init_drivers() == EGL_FALSE) {
1102        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1103    }
1104
1105    // bind this API on all EGLs
1106    EGLBoolean res = EGL_TRUE;
1107    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
1108        egl_connection_t* const cnx = &gEGLImpl[i];
1109        if (cnx->dso) {
1110            if (cnx->egl.eglBindAPI) {
1111                if (cnx->egl.eglBindAPI(api) == EGL_FALSE) {
1112                    res = EGL_FALSE;
1113                }
1114            }
1115        }
1116    }
1117    return res;
1118}
1119
1120EGLenum eglQueryAPI(void)
1121{
1122    clearError();
1123
1124    if (egl_init_drivers() == EGL_FALSE) {
1125        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1126    }
1127
1128    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
1129        egl_connection_t* const cnx = &gEGLImpl[i];
1130        if (cnx->dso) {
1131            if (cnx->egl.eglQueryAPI) {
1132                // the first one we find is okay, because they all
1133                // should be the same
1134                return cnx->egl.eglQueryAPI();
1135            }
1136        }
1137    }
1138    // or, it can only be OpenGL ES
1139    return EGL_OPENGL_ES_API;
1140}
1141
1142EGLBoolean eglReleaseThread(void)
1143{
1144    clearError();
1145
1146    // If there is context bound to the thread, release it
1147    loseCurrent(get_context(getContext()));
1148
1149    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
1150        egl_connection_t* const cnx = &gEGLImpl[i];
1151        if (cnx->dso) {
1152            if (cnx->egl.eglReleaseThread) {
1153                cnx->egl.eglReleaseThread();
1154            }
1155        }
1156    }
1157    egl_tls_t::clearTLS();
1158    dbgReleaseThread();
1159    return EGL_TRUE;
1160}
1161
1162EGLSurface eglCreatePbufferFromClientBuffer(
1163          EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
1164          EGLConfig config, const EGLint *attrib_list)
1165{
1166    clearError();
1167
1168    egl_display_t const* dp = 0;
1169    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
1170    if (!cnx) return EGL_FALSE;
1171    if (cnx->egl.eglCreatePbufferFromClientBuffer) {
1172        return cnx->egl.eglCreatePbufferFromClientBuffer(
1173                dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
1174                buftype, buffer,
1175                dp->configs[intptr_t(config)].config, attrib_list);
1176    }
1177    return setError(EGL_BAD_CONFIG, EGL_NO_SURFACE);
1178}
1179
1180// ----------------------------------------------------------------------------
1181// EGL_EGLEXT_VERSION 3
1182// ----------------------------------------------------------------------------
1183
1184EGLBoolean eglLockSurfaceKHR(EGLDisplay dpy, EGLSurface surface,
1185        const EGLint *attrib_list)
1186{
1187    clearError();
1188
1189    egl_display_t const * const dp = validate_display(dpy);
1190    if (!dp) return EGL_FALSE;
1191
1192    SurfaceRef _s(surface);
1193    if (!_s.get())
1194        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1195
1196    egl_surface_t const * const s = get_surface(surface);
1197    if (s->cnx->egl.eglLockSurfaceKHR) {
1198        return s->cnx->egl.eglLockSurfaceKHR(
1199                dp->disp[s->impl].dpy, s->surface, attrib_list);
1200    }
1201    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
1202}
1203
1204EGLBoolean eglUnlockSurfaceKHR(EGLDisplay dpy, EGLSurface surface)
1205{
1206    clearError();
1207
1208    egl_display_t const * const dp = validate_display(dpy);
1209    if (!dp) return EGL_FALSE;
1210
1211    SurfaceRef _s(surface);
1212    if (!_s.get())
1213        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1214
1215    egl_surface_t const * const s = get_surface(surface);
1216    if (s->cnx->egl.eglUnlockSurfaceKHR) {
1217        return s->cnx->egl.eglUnlockSurfaceKHR(
1218                dp->disp[s->impl].dpy, s->surface);
1219    }
1220    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
1221}
1222
1223EGLImageKHR eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target,
1224        EGLClientBuffer buffer, const EGLint *attrib_list)
1225{
1226    clearError();
1227
1228    egl_display_t const * const dp = validate_display(dpy);
1229    if (!dp) return EGL_NO_IMAGE_KHR;
1230
1231    if (ctx != EGL_NO_CONTEXT) {
1232        ContextRef _c(ctx);
1233        if (!_c.get())
1234            return setError(EGL_BAD_CONTEXT, EGL_NO_IMAGE_KHR);
1235        egl_context_t * const c = get_context(ctx);
1236        // since we have an EGLContext, we know which implementation to use
1237        EGLImageKHR image = c->cnx->egl.eglCreateImageKHR(
1238                dp->disp[c->impl].dpy, c->context, target, buffer, attrib_list);
1239        if (image == EGL_NO_IMAGE_KHR)
1240            return image;
1241
1242        egl_image_t* result = new egl_image_t(dpy, ctx);
1243        result->images[c->impl] = image;
1244        return (EGLImageKHR)result;
1245    } else {
1246        // EGL_NO_CONTEXT is a valid parameter
1247
1248        /* Since we don't have a way to know which implementation to call,
1249         * we're calling all of them. If at least one of the implementation
1250         * succeeded, this is a success.
1251         */
1252
1253        EGLint currentError = eglGetError();
1254
1255        EGLImageKHR implImages[IMPL_NUM_IMPLEMENTATIONS];
1256        bool success = false;
1257        for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
1258            egl_connection_t* const cnx = &gEGLImpl[i];
1259            implImages[i] = EGL_NO_IMAGE_KHR;
1260            if (cnx->dso) {
1261                if (cnx->egl.eglCreateImageKHR) {
1262                    implImages[i] = cnx->egl.eglCreateImageKHR(
1263                            dp->disp[i].dpy, ctx, target, buffer, attrib_list);
1264                    if (implImages[i] != EGL_NO_IMAGE_KHR) {
1265                        success = true;
1266                    }
1267                }
1268            }
1269        }
1270
1271        if (!success) {
1272            // failure, if there was an error when we entered this function,
1273            // the error flag must not be updated.
1274            // Otherwise, the error is whatever happened in the implementation
1275            // that faulted.
1276            if (currentError != EGL_SUCCESS) {
1277                setError(currentError, EGL_NO_IMAGE_KHR);
1278            }
1279            return EGL_NO_IMAGE_KHR;
1280        } else {
1281            // In case of success, we need to clear all error flags
1282            // (especially those caused by the implementation that didn't
1283            // succeed). TODO: we could avoid this if we knew this was
1284            // a "full" success (all implementation succeeded).
1285            eglGetError();
1286        }
1287
1288        egl_image_t* result = new egl_image_t(dpy, ctx);
1289        memcpy(result->images, implImages, sizeof(implImages));
1290        return (EGLImageKHR)result;
1291    }
1292}
1293
1294EGLBoolean eglDestroyImageKHR(EGLDisplay dpy, EGLImageKHR img)
1295{
1296    clearError();
1297
1298    egl_display_t const * const dp = validate_display(dpy);
1299    if (!dp) return EGL_FALSE;
1300
1301    ImageRef _i(img);
1302    if (!_i.get()) return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1303
1304    egl_image_t* image = get_image(img);
1305    bool success = false;
1306    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
1307        egl_connection_t* const cnx = &gEGLImpl[i];
1308        if (image->images[i] != EGL_NO_IMAGE_KHR) {
1309            if (cnx->dso) {
1310                if (cnx->egl.eglDestroyImageKHR) {
1311                    if (cnx->egl.eglDestroyImageKHR(
1312                            dp->disp[i].dpy, image->images[i])) {
1313                        success = true;
1314                    }
1315                }
1316            }
1317        }
1318    }
1319    if (!success)
1320        return EGL_FALSE;
1321
1322    _i.terminate();
1323
1324    return EGL_TRUE;
1325}
1326
1327// ----------------------------------------------------------------------------
1328// EGL_EGLEXT_VERSION 5
1329// ----------------------------------------------------------------------------
1330
1331
1332EGLSyncKHR eglCreateSyncKHR(EGLDisplay dpy, EGLenum type, const EGLint *attrib_list)
1333{
1334    clearError();
1335
1336    egl_display_t const * const dp = validate_display(dpy);
1337    if (!dp) return EGL_NO_SYNC_KHR;
1338
1339    EGLContext ctx = eglGetCurrentContext();
1340    ContextRef _c(ctx);
1341    if (!_c.get())
1342        return setError(EGL_BAD_CONTEXT, EGL_NO_SYNC_KHR);
1343
1344    egl_context_t * const c = get_context(ctx);
1345    EGLSyncKHR result = EGL_NO_SYNC_KHR;
1346    if (c->cnx->egl.eglCreateSyncKHR) {
1347        EGLSyncKHR sync = c->cnx->egl.eglCreateSyncKHR(
1348                dp->disp[c->impl].dpy, type, attrib_list);
1349        if (sync == EGL_NO_SYNC_KHR)
1350            return sync;
1351        result = (egl_sync_t*)new egl_sync_t(dpy, ctx, sync);
1352    }
1353    return (EGLSyncKHR)result;
1354}
1355
1356EGLBoolean eglDestroySyncKHR(EGLDisplay dpy, EGLSyncKHR sync)
1357{
1358    clearError();
1359
1360    egl_display_t const * const dp = validate_display(dpy);
1361    if (!dp) return EGL_FALSE;
1362
1363    SyncRef _s(sync);
1364    if (!_s.get()) return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1365    egl_sync_t* syncObject = get_sync(sync);
1366
1367    EGLContext ctx = syncObject->context;
1368    ContextRef _c(ctx);
1369    if (!_c.get())
1370        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
1371
1372    EGLBoolean result = EGL_FALSE;
1373    egl_context_t * const c = get_context(ctx);
1374    if (c->cnx->egl.eglDestroySyncKHR) {
1375        result = c->cnx->egl.eglDestroySyncKHR(
1376                dp->disp[c->impl].dpy, syncObject->sync);
1377        if (result)
1378            _s.terminate();
1379    }
1380    return result;
1381}
1382
1383EGLint eglClientWaitSyncKHR(EGLDisplay dpy, EGLSyncKHR sync, EGLint flags, EGLTimeKHR timeout)
1384{
1385    clearError();
1386
1387    egl_display_t const * const dp = validate_display(dpy);
1388    if (!dp) return EGL_FALSE;
1389
1390    SyncRef _s(sync);
1391    if (!_s.get()) return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1392    egl_sync_t* syncObject = get_sync(sync);
1393
1394    EGLContext ctx = syncObject->context;
1395    ContextRef _c(ctx);
1396    if (!_c.get())
1397        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
1398
1399    egl_context_t * const c = get_context(ctx);
1400    if (c->cnx->egl.eglClientWaitSyncKHR) {
1401        return c->cnx->egl.eglClientWaitSyncKHR(
1402                dp->disp[c->impl].dpy, syncObject->sync, flags, timeout);
1403    }
1404
1405    return EGL_FALSE;
1406}
1407
1408EGLBoolean eglGetSyncAttribKHR(EGLDisplay dpy, EGLSyncKHR sync, EGLint attribute, EGLint *value)
1409{
1410    clearError();
1411
1412    egl_display_t const * const dp = validate_display(dpy);
1413    if (!dp) return EGL_FALSE;
1414
1415    SyncRef _s(sync);
1416    if (!_s.get())
1417        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1418
1419    egl_sync_t* syncObject = get_sync(sync);
1420    EGLContext ctx = syncObject->context;
1421    ContextRef _c(ctx);
1422    if (!_c.get())
1423        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
1424
1425    egl_context_t * const c = get_context(ctx);
1426    if (c->cnx->egl.eglGetSyncAttribKHR) {
1427        return c->cnx->egl.eglGetSyncAttribKHR(
1428                dp->disp[c->impl].dpy, syncObject->sync, attribute, value);
1429    }
1430
1431    return EGL_FALSE;
1432}
1433
1434// ----------------------------------------------------------------------------
1435// ANDROID extensions
1436// ----------------------------------------------------------------------------
1437
1438EGLBoolean eglSetSwapRectangleANDROID(EGLDisplay dpy, EGLSurface draw,
1439        EGLint left, EGLint top, EGLint width, EGLint height)
1440{
1441    clearError();
1442
1443    egl_display_t const * const dp = validate_display(dpy);
1444    if (!dp) return EGL_FALSE;
1445
1446    SurfaceRef _s(draw);
1447    if (!_s.get())
1448        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1449
1450    egl_surface_t const * const s = get_surface(draw);
1451    if (s->cnx->egl.eglSetSwapRectangleANDROID) {
1452        return s->cnx->egl.eglSetSwapRectangleANDROID(
1453                dp->disp[s->impl].dpy, s->surface, left, top, width, height);
1454    }
1455    return setError(EGL_BAD_DISPLAY, NULL);
1456}
1457