eglApi.cpp revision 9f24fd020e387d57cb05d58f26985baa44571b85 
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    }
679    return result;
680}
681
682
683EGLBoolean eglQueryContext( EGLDisplay dpy, EGLContext ctx,
684                            EGLint attribute, EGLint *value)
685{
686    clearError();
687
688    egl_display_t const * const dp = validate_display(dpy);
689    if (!dp) return EGL_FALSE;
690
691    ContextRef _c(ctx);
692    if (!_c.get()) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
693
694    egl_context_t * const c = get_context(ctx);
695
696    EGLBoolean result(EGL_TRUE);
697    if (attribute == EGL_CONFIG_ID) {
698        *value = dp->configs[intptr_t(c->config)].configId;
699    } else {
700        // We need to remap EGL_CONFIG_IDs
701        result = c->cnx->egl.eglQueryContext(
702                dp->disp[c->impl].dpy, c->context, attribute, value);
703    }
704
705    return result;
706}
707
708EGLContext eglGetCurrentContext(void)
709{
710    // could be called before eglInitialize(), but we wouldn't have a context
711    // then, and this function would correctly return EGL_NO_CONTEXT.
712
713    clearError();
714
715    EGLContext ctx = getContext();
716    return ctx;
717}
718
719EGLSurface eglGetCurrentSurface(EGLint readdraw)
720{
721    // could be called before eglInitialize(), but we wouldn't have a context
722    // then, and this function would correctly return EGL_NO_SURFACE.
723
724    clearError();
725
726    EGLContext ctx = getContext();
727    if (ctx) {
728        egl_context_t const * const c = get_context(ctx);
729        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
730        switch (readdraw) {
731            case EGL_READ: return c->read;
732            case EGL_DRAW: return c->draw;
733            default: return setError(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
734        }
735    }
736    return EGL_NO_SURFACE;
737}
738
739EGLDisplay eglGetCurrentDisplay(void)
740{
741    // could be called before eglInitialize(), but we wouldn't have a context
742    // then, and this function would correctly return EGL_NO_DISPLAY.
743
744    clearError();
745
746    EGLContext ctx = getContext();
747    if (ctx) {
748        egl_context_t const * const c = get_context(ctx);
749        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
750        return c->dpy;
751    }
752    return EGL_NO_DISPLAY;
753}
754
755EGLBoolean eglWaitGL(void)
756{
757    // could be called before eglInitialize(), but we wouldn't have a context
758    // then, and this function would return GL_TRUE, which isn't wrong.
759
760    clearError();
761
762    EGLBoolean res = EGL_TRUE;
763    EGLContext ctx = getContext();
764    if (ctx) {
765        egl_context_t const * const c = get_context(ctx);
766        if (!c) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
767        if (uint32_t(c->impl)>=2)
768            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
769        egl_connection_t* const cnx = &gEGLImpl[c->impl];
770        if (!cnx->dso)
771            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
772        res = cnx->egl.eglWaitGL();
773    }
774    return res;
775}
776
777EGLBoolean eglWaitNative(EGLint engine)
778{
779    // could be called before eglInitialize(), but we wouldn't have a context
780    // then, and this function would return GL_TRUE, which isn't wrong.
781
782    clearError();
783
784    EGLBoolean res = EGL_TRUE;
785    EGLContext ctx = getContext();
786    if (ctx) {
787        egl_context_t const * const c = get_context(ctx);
788        if (!c) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
789        if (uint32_t(c->impl)>=2)
790            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
791        egl_connection_t* const cnx = &gEGLImpl[c->impl];
792        if (!cnx->dso)
793            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
794        res = cnx->egl.eglWaitNative(engine);
795    }
796    return res;
797}
798
799EGLint eglGetError(void)
800{
801    EGLint result = EGL_SUCCESS;
802    EGLint err;
803    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
804        err = EGL_SUCCESS;
805        egl_connection_t* const cnx = &gEGLImpl[i];
806        if (cnx->dso)
807            err = cnx->egl.eglGetError();
808        if (err!=EGL_SUCCESS && result==EGL_SUCCESS)
809            result = err;
810    }
811    err = egl_tls_t::getError();
812    if (result == EGL_SUCCESS)
813        result = err;
814    return result;
815}
816
817// Note: Similar implementations of these functions also exist in
818// gl2.cpp and gl.cpp, and are used by applications that call the
819// exported entry points directly.
820typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETTEXTURE2DOESPROC) (GLenum target, GLeglImageOES image);
821typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC) (GLenum target, GLeglImageOES image);
822
823static PFNGLEGLIMAGETARGETTEXTURE2DOESPROC glEGLImageTargetTexture2DOES_impl = NULL;
824static PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC glEGLImageTargetRenderbufferStorageOES_impl = NULL;
825
826static void glEGLImageTargetTexture2DOES_wrapper(GLenum target, GLeglImageOES image)
827{
828    GLeglImageOES implImage =
829        (GLeglImageOES)egl_get_image_for_current_context((EGLImageKHR)image);
830    glEGLImageTargetTexture2DOES_impl(target, implImage);
831}
832
833static void glEGLImageTargetRenderbufferStorageOES_wrapper(GLenum target, GLeglImageOES image)
834{
835    GLeglImageOES implImage =
836        (GLeglImageOES)egl_get_image_for_current_context((EGLImageKHR)image);
837    glEGLImageTargetRenderbufferStorageOES_impl(target, implImage);
838}
839
840__eglMustCastToProperFunctionPointerType eglGetProcAddress(const char *procname)
841{
842    // eglGetProcAddress() could be the very first function called
843    // in which case we must make sure we've initialized ourselves, this
844    // happens the first time egl_get_display() is called.
845
846    clearError();
847
848    if (egl_init_drivers() == EGL_FALSE) {
849        setError(EGL_BAD_PARAMETER, NULL);
850        return  NULL;
851    }
852
853    __eglMustCastToProperFunctionPointerType addr;
854    addr = findProcAddress(procname, sExtentionMap, NELEM(sExtentionMap));
855    if (addr) return addr;
856
857    // this protects accesses to sGLExtentionMap and sGLExtentionSlot
858    pthread_mutex_lock(&sExtensionMapMutex);
859
860        /*
861         * Since eglGetProcAddress() is not associated to anything, it needs
862         * to return a function pointer that "works" regardless of what
863         * the current context is.
864         *
865         * For this reason, we return a "forwarder", a small stub that takes
866         * care of calling the function associated with the context
867         * currently bound.
868         *
869         * We first look for extensions we've already resolved, if we're seeing
870         * this extension for the first time, we go through all our
871         * implementations and call eglGetProcAddress() and record the
872         * result in the appropriate implementation hooks and return the
873         * address of the forwarder corresponding to that hook set.
874         *
875         */
876
877        const String8 name(procname);
878        addr = sGLExtentionMap.valueFor(name);
879        const int slot = sGLExtentionSlot;
880
881        LOGE_IF(slot >= MAX_NUMBER_OF_GL_EXTENSIONS,
882                "no more slots for eglGetProcAddress(\"%s\")",
883                procname);
884
885        if (!addr && (slot < MAX_NUMBER_OF_GL_EXTENSIONS)) {
886            bool found = false;
887            for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
888                egl_connection_t* const cnx = &gEGLImpl[i];
889                if (cnx->dso && cnx->egl.eglGetProcAddress) {
890                    found = true;
891                    // Extensions are independent of the bound context
892                    cnx->hooks[GLESv1_INDEX]->ext.extensions[slot] =
893                    cnx->hooks[GLESv2_INDEX]->ext.extensions[slot] =
894#if EGL_TRACE
895                    gHooksDebug.ext.extensions[slot] = gHooksTrace.ext.extensions[slot] =
896#endif
897                            cnx->egl.eglGetProcAddress(procname);
898                }
899            }
900            if (found) {
901                addr = gExtensionForwarders[slot];
902
903                if (!strcmp(procname, "glEGLImageTargetTexture2DOES")) {
904                    glEGLImageTargetTexture2DOES_impl = (PFNGLEGLIMAGETARGETTEXTURE2DOESPROC)addr;
905                    addr = (__eglMustCastToProperFunctionPointerType)glEGLImageTargetTexture2DOES_wrapper;
906                }
907                if (!strcmp(procname, "glEGLImageTargetRenderbufferStorageOES")) {
908                    glEGLImageTargetRenderbufferStorageOES_impl = (PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC)addr;
909                    addr = (__eglMustCastToProperFunctionPointerType)glEGLImageTargetRenderbufferStorageOES_wrapper;
910                }
911
912                sGLExtentionMap.add(name, addr);
913                sGLExtentionSlot++;
914            }
915        }
916
917    pthread_mutex_unlock(&sExtensionMapMutex);
918    return addr;
919}
920
921EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw)
922{
923    EGLBoolean Debug_eglSwapBuffers(EGLDisplay dpy, EGLSurface draw);
924    if (gEGLDebugLevel > 0)
925        Debug_eglSwapBuffers(dpy, draw);
926
927    clearError();
928
929    egl_display_t const * const dp = validate_display(dpy);
930    if (!dp) return EGL_FALSE;
931
932    SurfaceRef _s(draw);
933    if (!_s.get())
934        return setError(EGL_BAD_SURFACE, EGL_FALSE);
935
936    egl_surface_t const * const s = get_surface(draw);
937    return s->cnx->egl.eglSwapBuffers(dp->disp[s->impl].dpy, s->surface);
938}
939
940EGLBoolean eglCopyBuffers(  EGLDisplay dpy, EGLSurface surface,
941                            NativePixmapType target)
942{
943    clearError();
944
945    egl_display_t const * const dp = validate_display(dpy);
946    if (!dp) return EGL_FALSE;
947
948    SurfaceRef _s(surface);
949    if (!_s.get())
950        return setError(EGL_BAD_SURFACE, EGL_FALSE);
951
952    egl_surface_t const * const s = get_surface(surface);
953    return s->cnx->egl.eglCopyBuffers(
954            dp->disp[s->impl].dpy, s->surface, target);
955}
956
957const char* eglQueryString(EGLDisplay dpy, EGLint name)
958{
959    clearError();
960
961    egl_display_t const * const dp = validate_display(dpy);
962    if (!dp) return (const char *) NULL;
963
964    switch (name) {
965        case EGL_VENDOR:
966            return sVendorString;
967        case EGL_VERSION:
968            return sVersionString;
969        case EGL_EXTENSIONS:
970            return sExtensionString;
971        case EGL_CLIENT_APIS:
972            return sClientApiString;
973    }
974    return setError(EGL_BAD_PARAMETER, (const char *)0);
975}
976
977
978// ----------------------------------------------------------------------------
979// EGL 1.1
980// ----------------------------------------------------------------------------
981
982EGLBoolean eglSurfaceAttrib(
983        EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value)
984{
985    clearError();
986
987    egl_display_t const * const dp = validate_display(dpy);
988    if (!dp) return EGL_FALSE;
989
990    SurfaceRef _s(surface);
991    if (!_s.get())
992        return setError(EGL_BAD_SURFACE, EGL_FALSE);
993
994    egl_surface_t const * const s = get_surface(surface);
995    if (s->cnx->egl.eglSurfaceAttrib) {
996        return s->cnx->egl.eglSurfaceAttrib(
997                dp->disp[s->impl].dpy, s->surface, attribute, value);
998    }
999    return setError(EGL_BAD_SURFACE, EGL_FALSE);
1000}
1001
1002EGLBoolean eglBindTexImage(
1003        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
1004{
1005    clearError();
1006
1007    egl_display_t const * const dp = validate_display(dpy);
1008    if (!dp) return EGL_FALSE;
1009
1010    SurfaceRef _s(surface);
1011    if (!_s.get())
1012        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1013
1014    egl_surface_t const * const s = get_surface(surface);
1015    if (s->cnx->egl.eglBindTexImage) {
1016        return s->cnx->egl.eglBindTexImage(
1017                dp->disp[s->impl].dpy, s->surface, buffer);
1018    }
1019    return setError(EGL_BAD_SURFACE, EGL_FALSE);
1020}
1021
1022EGLBoolean eglReleaseTexImage(
1023        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
1024{
1025    clearError();
1026
1027    egl_display_t const * const dp = validate_display(dpy);
1028    if (!dp) return EGL_FALSE;
1029
1030    SurfaceRef _s(surface);
1031    if (!_s.get())
1032        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1033
1034    egl_surface_t const * const s = get_surface(surface);
1035    if (s->cnx->egl.eglReleaseTexImage) {
1036        return s->cnx->egl.eglReleaseTexImage(
1037                dp->disp[s->impl].dpy, s->surface, buffer);
1038    }
1039    return setError(EGL_BAD_SURFACE, EGL_FALSE);
1040}
1041
1042EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval)
1043{
1044    clearError();
1045
1046    egl_display_t const * const dp = validate_display(dpy);
1047    if (!dp) return EGL_FALSE;
1048
1049    EGLBoolean res = EGL_TRUE;
1050    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
1051        egl_connection_t* const cnx = &gEGLImpl[i];
1052        if (cnx->dso) {
1053            if (cnx->egl.eglSwapInterval) {
1054                if (cnx->egl.eglSwapInterval(
1055                        dp->disp[i].dpy, interval) == EGL_FALSE) {
1056                    res = EGL_FALSE;
1057                }
1058            }
1059        }
1060    }
1061    return res;
1062}
1063
1064
1065// ----------------------------------------------------------------------------
1066// EGL 1.2
1067// ----------------------------------------------------------------------------
1068
1069EGLBoolean eglWaitClient(void)
1070{
1071    clearError();
1072
1073    // could be called before eglInitialize(), but we wouldn't have a context
1074    // then, and this function would return GL_TRUE, which isn't wrong.
1075    EGLBoolean res = EGL_TRUE;
1076    EGLContext ctx = getContext();
1077    if (ctx) {
1078        egl_context_t const * const c = get_context(ctx);
1079        if (!c) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
1080        if (uint32_t(c->impl)>=2)
1081            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
1082        egl_connection_t* const cnx = &gEGLImpl[c->impl];
1083        if (!cnx->dso)
1084            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
1085        if (cnx->egl.eglWaitClient) {
1086            res = cnx->egl.eglWaitClient();
1087        } else {
1088            res = cnx->egl.eglWaitGL();
1089        }
1090    }
1091    return res;
1092}
1093
1094EGLBoolean eglBindAPI(EGLenum api)
1095{
1096    clearError();
1097
1098    if (egl_init_drivers() == EGL_FALSE) {
1099        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1100    }
1101
1102    // bind this API on all EGLs
1103    EGLBoolean res = EGL_TRUE;
1104    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
1105        egl_connection_t* const cnx = &gEGLImpl[i];
1106        if (cnx->dso) {
1107            if (cnx->egl.eglBindAPI) {
1108                if (cnx->egl.eglBindAPI(api) == EGL_FALSE) {
1109                    res = EGL_FALSE;
1110                }
1111            }
1112        }
1113    }
1114    return res;
1115}
1116
1117EGLenum eglQueryAPI(void)
1118{
1119    clearError();
1120
1121    if (egl_init_drivers() == EGL_FALSE) {
1122        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1123    }
1124
1125    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
1126        egl_connection_t* const cnx = &gEGLImpl[i];
1127        if (cnx->dso) {
1128            if (cnx->egl.eglQueryAPI) {
1129                // the first one we find is okay, because they all
1130                // should be the same
1131                return cnx->egl.eglQueryAPI();
1132            }
1133        }
1134    }
1135    // or, it can only be OpenGL ES
1136    return EGL_OPENGL_ES_API;
1137}
1138
1139EGLBoolean eglReleaseThread(void)
1140{
1141    clearError();
1142
1143    // If there is context bound to the thread, release it
1144    loseCurrent(get_context(getContext()));
1145
1146    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
1147        egl_connection_t* const cnx = &gEGLImpl[i];
1148        if (cnx->dso) {
1149            if (cnx->egl.eglReleaseThread) {
1150                cnx->egl.eglReleaseThread();
1151            }
1152        }
1153    }
1154    egl_tls_t::clearTLS();
1155    dbgReleaseThread();
1156    return EGL_TRUE;
1157}
1158
1159EGLSurface eglCreatePbufferFromClientBuffer(
1160          EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
1161          EGLConfig config, const EGLint *attrib_list)
1162{
1163    clearError();
1164
1165    egl_display_t const* dp = 0;
1166    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
1167    if (!cnx) return EGL_FALSE;
1168    if (cnx->egl.eglCreatePbufferFromClientBuffer) {
1169        return cnx->egl.eglCreatePbufferFromClientBuffer(
1170                dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
1171                buftype, buffer,
1172                dp->configs[intptr_t(config)].config, attrib_list);
1173    }
1174    return setError(EGL_BAD_CONFIG, EGL_NO_SURFACE);
1175}
1176
1177// ----------------------------------------------------------------------------
1178// EGL_EGLEXT_VERSION 3
1179// ----------------------------------------------------------------------------
1180
1181EGLBoolean eglLockSurfaceKHR(EGLDisplay dpy, EGLSurface surface,
1182        const EGLint *attrib_list)
1183{
1184    clearError();
1185
1186    egl_display_t const * const dp = validate_display(dpy);
1187    if (!dp) return EGL_FALSE;
1188
1189    SurfaceRef _s(surface);
1190    if (!_s.get())
1191        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1192
1193    egl_surface_t const * const s = get_surface(surface);
1194    if (s->cnx->egl.eglLockSurfaceKHR) {
1195        return s->cnx->egl.eglLockSurfaceKHR(
1196                dp->disp[s->impl].dpy, s->surface, attrib_list);
1197    }
1198    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
1199}
1200
1201EGLBoolean eglUnlockSurfaceKHR(EGLDisplay dpy, EGLSurface surface)
1202{
1203    clearError();
1204
1205    egl_display_t const * const dp = validate_display(dpy);
1206    if (!dp) return EGL_FALSE;
1207
1208    SurfaceRef _s(surface);
1209    if (!_s.get())
1210        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1211
1212    egl_surface_t const * const s = get_surface(surface);
1213    if (s->cnx->egl.eglUnlockSurfaceKHR) {
1214        return s->cnx->egl.eglUnlockSurfaceKHR(
1215                dp->disp[s->impl].dpy, s->surface);
1216    }
1217    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
1218}
1219
1220EGLImageKHR eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target,
1221        EGLClientBuffer buffer, const EGLint *attrib_list)
1222{
1223    clearError();
1224
1225    egl_display_t const * const dp = validate_display(dpy);
1226    if (!dp) return EGL_NO_IMAGE_KHR;
1227
1228    if (ctx != EGL_NO_CONTEXT) {
1229        ContextRef _c(ctx);
1230        if (!_c.get())
1231            return setError(EGL_BAD_CONTEXT, EGL_NO_IMAGE_KHR);
1232        egl_context_t * const c = get_context(ctx);
1233        // since we have an EGLContext, we know which implementation to use
1234        EGLImageKHR image = c->cnx->egl.eglCreateImageKHR(
1235                dp->disp[c->impl].dpy, c->context, target, buffer, attrib_list);
1236        if (image == EGL_NO_IMAGE_KHR)
1237            return image;
1238
1239        egl_image_t* result = new egl_image_t(dpy, ctx);
1240        result->images[c->impl] = image;
1241        return (EGLImageKHR)result;
1242    } else {
1243        // EGL_NO_CONTEXT is a valid parameter
1244
1245        /* Since we don't have a way to know which implementation to call,
1246         * we're calling all of them. If at least one of the implementation
1247         * succeeded, this is a success.
1248         */
1249
1250        EGLint currentError = eglGetError();
1251
1252        EGLImageKHR implImages[IMPL_NUM_IMPLEMENTATIONS];
1253        bool success = false;
1254        for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
1255            egl_connection_t* const cnx = &gEGLImpl[i];
1256            implImages[i] = EGL_NO_IMAGE_KHR;
1257            if (cnx->dso) {
1258                if (cnx->egl.eglCreateImageKHR) {
1259                    implImages[i] = cnx->egl.eglCreateImageKHR(
1260                            dp->disp[i].dpy, ctx, target, buffer, attrib_list);
1261                    if (implImages[i] != EGL_NO_IMAGE_KHR) {
1262                        success = true;
1263                    }
1264                }
1265            }
1266        }
1267
1268        if (!success) {
1269            // failure, if there was an error when we entered this function,
1270            // the error flag must not be updated.
1271            // Otherwise, the error is whatever happened in the implementation
1272            // that faulted.
1273            if (currentError != EGL_SUCCESS) {
1274                setError(currentError, EGL_NO_IMAGE_KHR);
1275            }
1276            return EGL_NO_IMAGE_KHR;
1277        } else {
1278            // In case of success, we need to clear all error flags
1279            // (especially those caused by the implementation that didn't
1280            // succeed). TODO: we could avoid this if we knew this was
1281            // a "full" success (all implementation succeeded).
1282            eglGetError();
1283        }
1284
1285        egl_image_t* result = new egl_image_t(dpy, ctx);
1286        memcpy(result->images, implImages, sizeof(implImages));
1287        return (EGLImageKHR)result;
1288    }
1289}
1290
1291EGLBoolean eglDestroyImageKHR(EGLDisplay dpy, EGLImageKHR img)
1292{
1293    clearError();
1294
1295    egl_display_t const * const dp = validate_display(dpy);
1296    if (!dp) return EGL_FALSE;
1297
1298    ImageRef _i(img);
1299    if (!_i.get()) return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1300
1301    egl_image_t* image = get_image(img);
1302    bool success = false;
1303    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
1304        egl_connection_t* const cnx = &gEGLImpl[i];
1305        if (image->images[i] != EGL_NO_IMAGE_KHR) {
1306            if (cnx->dso) {
1307                if (cnx->egl.eglDestroyImageKHR) {
1308                    if (cnx->egl.eglDestroyImageKHR(
1309                            dp->disp[i].dpy, image->images[i])) {
1310                        success = true;
1311                    }
1312                }
1313            }
1314        }
1315    }
1316    if (!success)
1317        return EGL_FALSE;
1318
1319    _i.terminate();
1320
1321    return EGL_TRUE;
1322}
1323
1324// ----------------------------------------------------------------------------
1325// EGL_EGLEXT_VERSION 5
1326// ----------------------------------------------------------------------------
1327
1328
1329EGLSyncKHR eglCreateSyncKHR(EGLDisplay dpy, EGLenum type, const EGLint *attrib_list)
1330{
1331    clearError();
1332
1333    egl_display_t const * const dp = validate_display(dpy);
1334    if (!dp) return EGL_NO_SYNC_KHR;
1335
1336    EGLContext ctx = eglGetCurrentContext();
1337    ContextRef _c(ctx);
1338    if (!_c.get())
1339        return setError(EGL_BAD_CONTEXT, EGL_NO_SYNC_KHR);
1340
1341    egl_context_t * const c = get_context(ctx);
1342    EGLSyncKHR result = EGL_NO_SYNC_KHR;
1343    if (c->cnx->egl.eglCreateSyncKHR) {
1344        EGLSyncKHR sync = c->cnx->egl.eglCreateSyncKHR(
1345                dp->disp[c->impl].dpy, type, attrib_list);
1346        if (sync == EGL_NO_SYNC_KHR)
1347            return sync;
1348        result = (egl_sync_t*)new egl_sync_t(dpy, ctx, sync);
1349    }
1350    return (EGLSyncKHR)result;
1351}
1352
1353EGLBoolean eglDestroySyncKHR(EGLDisplay dpy, EGLSyncKHR sync)
1354{
1355    clearError();
1356
1357    egl_display_t const * const dp = validate_display(dpy);
1358    if (!dp) return EGL_FALSE;
1359
1360    SyncRef _s(sync);
1361    if (!_s.get()) return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1362    egl_sync_t* syncObject = get_sync(sync);
1363
1364    EGLContext ctx = syncObject->context;
1365    ContextRef _c(ctx);
1366    if (!_c.get())
1367        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
1368
1369    EGLBoolean result = EGL_FALSE;
1370    egl_context_t * const c = get_context(ctx);
1371    if (c->cnx->egl.eglDestroySyncKHR) {
1372        result = c->cnx->egl.eglDestroySyncKHR(
1373                dp->disp[c->impl].dpy, syncObject->sync);
1374        if (result)
1375            _s.terminate();
1376    }
1377    return result;
1378}
1379
1380EGLint eglClientWaitSyncKHR(EGLDisplay dpy, EGLSyncKHR sync, EGLint flags, EGLTimeKHR timeout)
1381{
1382    clearError();
1383
1384    egl_display_t const * const dp = validate_display(dpy);
1385    if (!dp) return EGL_FALSE;
1386
1387    SyncRef _s(sync);
1388    if (!_s.get()) return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1389    egl_sync_t* syncObject = get_sync(sync);
1390
1391    EGLContext ctx = syncObject->context;
1392    ContextRef _c(ctx);
1393    if (!_c.get())
1394        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
1395
1396    egl_context_t * const c = get_context(ctx);
1397    if (c->cnx->egl.eglClientWaitSyncKHR) {
1398        return c->cnx->egl.eglClientWaitSyncKHR(
1399                dp->disp[c->impl].dpy, syncObject->sync, flags, timeout);
1400    }
1401
1402    return EGL_FALSE;
1403}
1404
1405EGLBoolean eglGetSyncAttribKHR(EGLDisplay dpy, EGLSyncKHR sync, EGLint attribute, EGLint *value)
1406{
1407    clearError();
1408
1409    egl_display_t const * const dp = validate_display(dpy);
1410    if (!dp) return EGL_FALSE;
1411
1412    SyncRef _s(sync);
1413    if (!_s.get())
1414        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
1415
1416    egl_sync_t* syncObject = get_sync(sync);
1417    EGLContext ctx = syncObject->context;
1418    ContextRef _c(ctx);
1419    if (!_c.get())
1420        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
1421
1422    egl_context_t * const c = get_context(ctx);
1423    if (c->cnx->egl.eglGetSyncAttribKHR) {
1424        return c->cnx->egl.eglGetSyncAttribKHR(
1425                dp->disp[c->impl].dpy, syncObject->sync, attribute, value);
1426    }
1427
1428    return EGL_FALSE;
1429}
1430
1431// ----------------------------------------------------------------------------
1432// ANDROID extensions
1433// ----------------------------------------------------------------------------
1434
1435EGLBoolean eglSetSwapRectangleANDROID(EGLDisplay dpy, EGLSurface draw,
1436        EGLint left, EGLint top, EGLint width, EGLint height)
1437{
1438    clearError();
1439
1440    egl_display_t const * const dp = validate_display(dpy);
1441    if (!dp) return EGL_FALSE;
1442
1443    SurfaceRef _s(draw);
1444    if (!_s.get())
1445        return setError(EGL_BAD_SURFACE, EGL_FALSE);
1446
1447    egl_surface_t const * const s = get_surface(draw);
1448    if (s->cnx->egl.eglSetSwapRectangleANDROID) {
1449        return s->cnx->egl.eglSetSwapRectangleANDROID(
1450                dp->disp[s->impl].dpy, s->surface, left, top, width, height);
1451    }
1452    return setError(EGL_BAD_DISPLAY, NULL);
1453}
1454